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LEO-II---2.3.1.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SEU161+2 : TPTP v9.3.1. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p

% Computer : n006.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed Oct  7 10:43:10 AM UTC 2026

% Result   : Theorem 6.38s 1.39s
% Output   : CNFRefutation 1.35s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   33
%            Number of leaves      :   43
% Syntax   : Number of formulae    :  683 ( 270 unt;   0 typ;   0 def)
%            Number of atoms       : 5329 (2094 equ;   0 cnn)
%            Maximal formula atoms :    6 (   7 avg)
%            Number of connectives : 11039 (2589   ~;1875   |;  33   &;6450   @)
%                                         (  51 <=>;  41  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   11 (   4 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   33 (  30 usr;   5 con; 0-3 aty)
%            Number of variables   : 1933 (   0   ^;1927   !;   6   ?;1933   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_cartesian_product2,type,
    cartesian_product2: $i > $i > $i ).

thf(tp_disjoint,type,
    disjoint: $i > $i > $o ).

thf(tp_empty,type,
    empty: $i > $o ).

thf(tp_empty_set,type,
    empty_set: $i ).

thf(tp_in,type,
    in: $i > $i > $o ).

thf(tp_ordered_pair,type,
    ordered_pair: $i > $i > $i ).

thf(tp_powerset,type,
    powerset: $i > $i ).

thf(tp_proper_subset,type,
    proper_subset: $i > $i > $o ).

thf(tp_sK10_SY173,type,
    sK10_SY173: $i > $i > $i > $i ).

thf(tp_sK11_SY175,type,
    sK11_SY175: $i > $i > $i > $i ).

thf(tp_sK12_SY140,type,
    sK12_SY140: $i > $i > $i ).

thf(tp_sK13_SY176,type,
    sK13_SY176: $i > $i > $i > $i ).

thf(tp_sK14_SY179,type,
    sK14_SY179: $i > $i > $i ).

thf(tp_sK15_SY179,type,
    sK15_SY179: $i > $i > $i > $i ).

thf(tp_sK1_A,type,
    sK1_A: $i ).

thf(tp_sK2_SY81,type,
    sK2_SY81: $i ).

thf(tp_sK3_SY165,type,
    sK3_SY165: $i > $i > $i ).

thf(tp_sK4_SY136,type,
    sK4_SY136: $i > $i ).

thf(tp_sK5_SY143,type,
    sK5_SY143: $i > $i > $i ).

thf(tp_sK6_SY149,type,
    sK6_SY149: $i > $i > $i ).

thf(tp_sK7_SY167,type,
    sK7_SY167: $i > $i > $i ).

thf(tp_sK8_SY169,type,
    sK8_SY169: $i > $i > $i > $i ).

thf(tp_sK9_SY171,type,
    sK9_SY171: $i > $i > $i > $i ).

thf(tp_set_difference,type,
    set_difference: $i > $i > $i ).

thf(tp_set_intersection2,type,
    set_intersection2: $i > $i > $i ).

thf(tp_set_union2,type,
    set_union2: $i > $i > $i ).

thf(tp_singleton,type,
    singleton: $i > $i ).

thf(tp_subset,type,
    subset: $i > $i > $o ).

thf(tp_union,type,
    union: $i > $i ).

thf(tp_unordered_pair,type,
    unordered_pair: $i > $i > $i ).

thf(2,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( in @ A @ B )
        & ( empty @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t7_boole) ).

thf(6,axiom,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( in @ C @ A )
        <=> ( in @ C @ B ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_tarski) ).

thf(8,axiom,
    ! [A: $i] :
      ( ( set_union2 @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_boole) ).

thf(15,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(16,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ B @ A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(17,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ A @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(20,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k4_xboole_0) ).

thf(21,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k4_tarski) ).

thf(22,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k3_xboole_0) ).

thf(23,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k3_tarski) ).

thf(24,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k2_zfmisc_1) ).

thf(25,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k2_xboole_0) ).

thf(26,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k2_tarski) ).

thf(27,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k1_zfmisc_1) ).

thf(28,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k1_xboole_0) ).

thf(29,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k1_tarski) ).

thf(33,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( set_difference @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( in @ D @ A )
            & ~ ( in @ D @ B ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d4_xboole_0) ).

thf(34,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( union @ A ) )
    <=> ! [C: $i] :
          ( ( in @ C @ B )
        <=> ? [D: $i] :
              ( ( in @ C @ D )
              & ( in @ D @ A ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d4_tarski) ).

thf(35,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( set_intersection2 @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( in @ D @ A )
            & ( in @ D @ B ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d3_xboole_0) ).

thf(36,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
    <=> ! [C: $i] :
          ( ( in @ C @ A )
         => ( in @ C @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d3_tarski) ).

thf(38,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( set_union2 @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( in @ D @ A )
            | ( in @ D @ B ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_xboole_0) ).

thf(39,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( unordered_pair @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( D = A )
            | ( D = B ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_tarski) ).

thf(41,axiom,
    ! [A: $i] :
      ( ( A = empty_set )
    <=> ! [B: $i] :
          ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d1_xboole_0) ).

thf(42,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( singleton @ A ) )
    <=> ! [C: $i] :
          ( ( in @ C @ B )
        <=> ( C = A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d1_tarski) ).

thf(45,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ B )
      = ( set_union2 @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_xboole_0) ).

thf(48,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(49,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( singleton @ A )
        = ( unordered_pair @ B @ C ) )
     => ( B = C ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t9_zfmisc_1) ).

thf(50,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( singleton @ A )
        = ( unordered_pair @ B @ C ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t8_zfmisc_1) ).

thf(51,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( subset @ A @ B )
        & ( subset @ C @ B ) )
     => ( subset @ ( set_union2 @ A @ C ) @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t8_xboole_1) ).

thf(53,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t7_xboole_1) ).

thf(54,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t6_zfmisc_1) ).

thf(55,axiom,
    ! [A: $i] :
      ( ( unordered_pair @ A @ A )
      = ( singleton @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t69_enumset1) ).

thf(61,axiom,
    ! [A: $i,B: $i] :
      ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
      = ( set_difference @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t40_xboole_1) ).

thf(63,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( ~ ( disjoint @ A @ B )
          & ! [C: $i] :
              ~ ( ( in @ C @ A )
                & ( in @ C @ B ) ) )
      & ~ ( ? [C: $i] :
              ( ( in @ C @ A )
              & ( in @ C @ B ) )
          & ( disjoint @ A @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t3_xboole_0) ).

thf(65,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
      = ( set_union2 @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t39_xboole_1) ).

thf(67,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ B )
    <=> ( in @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t37_zfmisc_1) ).

thf(79,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
     => ( ( set_union2 @ A @ B )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t12_xboole_1) ).

thf(86,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ B )
    <=> ( in @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l2_zfmisc_1) ).

thf(87,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( in @ A @ B )
     => ( disjoint @ ( singleton @ A ) @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l28_zfmisc_1) ).

thf(88,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( disjoint @ ( singleton @ A ) @ B )
        & ( in @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l25_zfmisc_1) ).

thf(89,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( ( set_union2 @ ( singleton @ A ) @ B )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l23_zfmisc_1) ).

thf(90,axiom,
    ! [A: $i] :
      ( ( singleton @ A )
     != empty_set ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l1_zfmisc_1) ).

thf(91,conjecture,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( ( set_union2 @ ( singleton @ A ) @ B )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t46_zfmisc_1) ).

thf(92,negated_conjecture,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[91]) ).

thf(93,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[92]) ).

thf(94,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( in @ A @ B )
            & ( empty @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(95,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( in @ C @ A )
            <=> ( in @ C @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(96,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(97,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[15]) ).

thf(98,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[16]) ).

thf(99,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[17]) ).

thf(100,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[20]) ).

thf(101,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[21]) ).

thf(102,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[22]) ).

thf(103,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[23]) ).

thf(104,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[24]) ).

thf(105,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[25]) ).

thf(106,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[26]) ).

thf(107,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[27]) ).

thf(108,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[28]) ).

thf(109,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[29]) ).

thf(110,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_difference @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                & ~ ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[33]) ).

thf(111,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( union @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ? [D: $i] :
                  ( ( in @ C @ D )
                  & ( in @ D @ A ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[34]) ).

thf(112,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_intersection2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                & ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[35]) ).

thf(113,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
        <=> ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[36]) ).

thf(114,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_union2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                | ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[38]) ).

thf(115,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( unordered_pair @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( D = A )
                | ( D = B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[39]) ).

thf(116,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[41]) ).

thf(117,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( singleton @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( C = A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[42]) ).

thf(118,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[45]) ).

thf(119,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[48]) ).

thf(120,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( B = C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[49]) ).

thf(121,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[50]) ).

thf(122,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ C @ B ) )
         => ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[51]) ).

thf(123,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[53]) ).

thf(124,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[54]) ).

thf(125,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[55]) ).

thf(126,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[61]) ).

thf(127,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( ~ ( disjoint @ A @ B )
              & ! [C: $i] :
                  ~ ( ( in @ C @ A )
                    & ( in @ C @ B ) ) )
          & ~ ( ? [C: $i] :
                  ( ( in @ C @ A )
                  & ( in @ C @ B ) )
              & ( disjoint @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[63]) ).

thf(128,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[65]) ).

thf(129,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[67]) ).

thf(130,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[79]) ).

thf(131,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[86]) ).

thf(132,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
         => ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[87]) ).

thf(133,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( disjoint @ ( singleton @ A ) @ B )
            & ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[88]) ).

thf(134,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[89]) ).

thf(135,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[90]) ).

thf(136,plain,
    ( ( ! [SY81: $i] :
          ( ( in @ sK1_A @ SY81 )
         => ( ( set_union2 @ ( singleton @ sK1_A ) @ SY81 )
            = SY81 ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[93]) ).

thf(137,plain,
    ( ( ( in @ sK1_A @ sK2_SY81 )
     => ( ( set_union2 @ ( singleton @ sK1_A ) @ sK2_SY81 )
        = sK2_SY81 ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[136]) ).

thf(138,plain,
    ( ( in @ sK1_A @ sK2_SY81 )
    = $true ),
    inference(standard_cnf,[status(thm)],[137]) ).

thf(139,plain,
    ( ( ( set_union2 @ ( singleton @ sK1_A ) @ sK2_SY81 )
      = sK2_SY81 )
    = $false ),
    inference(standard_cnf,[status(thm)],[137]) ).

thf(140,plain,
    ( ( ( set_union2 @ ( singleton @ sK1_A ) @ sK2_SY81 )
     != sK2_SY81 )
    = $true ),
    inference(polarity_switch,[status(thm)],[139]) ).

thf(141,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[135]) ).

thf(142,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[134]) ).

thf(143,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( disjoint @ ( singleton @ A ) @ B )
            & ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[133]) ).

thf(144,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
         => ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[132]) ).

thf(145,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[131]) ).

thf(146,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[130]) ).

thf(147,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[129]) ).

thf(148,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[128]) ).

thf(149,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( ~ ( disjoint @ A @ B )
              & ! [C: $i] :
                  ~ ( ( in @ C @ A )
                    & ( in @ C @ B ) ) )
          & ~ ( ? [C: $i] :
                  ( ( in @ C @ A )
                  & ( in @ C @ B ) )
              & ( disjoint @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[127]) ).

thf(150,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[126]) ).

thf(151,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[125]) ).

thf(152,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[124]) ).

thf(153,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[123]) ).

thf(154,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ C @ B ) )
         => ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[122]) ).

thf(155,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[121]) ).

thf(156,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( B = C ) ) )
    = $true ),
    inference(copy,[status(thm)],[120]) ).

thf(157,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[119]) ).

thf(158,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[118]) ).

thf(159,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( singleton @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( C = A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[117]) ).

thf(160,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[116]) ).

thf(161,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( unordered_pair @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( D = A )
                | ( D = B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[115]) ).

thf(162,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_union2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                | ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[114]) ).

thf(163,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
        <=> ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[113]) ).

thf(164,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_intersection2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                & ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[112]) ).

thf(165,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( union @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ? [D: $i] :
                  ( ( in @ C @ D )
                  & ( in @ D @ A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[111]) ).

thf(166,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_difference @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                & ~ ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[110]) ).

thf(167,plain,
    $true = $true,
    inference(copy,[status(thm)],[109]) ).

thf(168,plain,
    $true = $true,
    inference(copy,[status(thm)],[108]) ).

thf(169,plain,
    $true = $true,
    inference(copy,[status(thm)],[107]) ).

thf(170,plain,
    $true = $true,
    inference(copy,[status(thm)],[106]) ).

thf(171,plain,
    $true = $true,
    inference(copy,[status(thm)],[105]) ).

thf(172,plain,
    $true = $true,
    inference(copy,[status(thm)],[104]) ).

thf(173,plain,
    $true = $true,
    inference(copy,[status(thm)],[103]) ).

thf(174,plain,
    $true = $true,
    inference(copy,[status(thm)],[102]) ).

thf(175,plain,
    $true = $true,
    inference(copy,[status(thm)],[101]) ).

thf(176,plain,
    $true = $true,
    inference(copy,[status(thm)],[100]) ).

thf(177,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[99]) ).

thf(178,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[98]) ).

thf(179,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[97]) ).

thf(180,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[96]) ).

thf(181,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( in @ C @ A )
            <=> ( in @ C @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[95]) ).

thf(182,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( in @ A @ B )
            & ( empty @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[94]) ).

thf(183,plain,
    ( ( in @ sK1_A @ sK2_SY81 )
    = $true ),
    inference(copy,[status(thm)],[138]) ).

thf(184,plain,
    ( ( ( set_union2 @ ( singleton @ sK1_A ) @ sK2_SY81 )
     != sK2_SY81 )
    = $true ),
    inference(copy,[status(thm)],[140]) ).

thf(185,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ~ ( empty @ SX0 )
          | ~ ( empty @ ( set_union2 @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[177]) ).

thf(186,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ~ ~ ( ~ ~ ( disjoint @ SX0 @ SX1 )
                    | ~ ! [SX2: $i] :
                          ~ ~ ( ~ ( in @ SX2 @ SX0 )
                              | ~ ( in @ SX2 @ SX1 ) ) )
            | ~ ~ ~ ( ~ ~ ! [SX2: $i] :
                            ~ ~ ( ~ ( in @ SX2 @ SX0 )
                                | ~ ( in @ SX2 @ SX1 ) )
                    | ~ ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[149]) ).

thf(187,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( subset @ SX0 @ SX1 )
                | ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX0 )
                    | ( in @ SX2 @ SX1 ) ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX0 )
                      | ( in @ SX2 @ SX1 ) )
                | ( subset @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[163]) ).

thf(188,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
                | ( in @ SX0 @ SX1 ) )
            | ~ ( ~ ( in @ SX0 @ SX1 )
                | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[147]) ).

thf(189,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ~ ( empty @ SX0 )
          | ~ ( empty @ ( set_union2 @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[178]) ).

thf(190,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ( ~ ~ ( ~ ( subset @ SX0 @ SX1 )
                | ~ ( subset @ SX2 @ SX1 ) )
          | ( subset @ ( set_union2 @ SX0 @ SX2 ) @ SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[154]) ).

thf(191,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ( ( ( singleton @ SX0 )
           != ( unordered_pair @ SX1 @ SX2 ) )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[155]) ).

thf(192,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( SX1
                 != ( union @ SX0 ) )
                | ! [SX2: $i] :
                    ~ ( ~ ( ~ ( in @ SX2 @ SX1 )
                          | ~ ! [SX3: $i] :
                                ~ ~ ( ~ ( in @ SX2 @ SX3 )
                                    | ~ ( in @ SX3 @ SX0 ) ) )
                      | ~ ( ~ ~ ! [SX3: $i] :
                                  ~ ~ ( ~ ( in @ SX2 @ SX3 )
                                      | ~ ( in @ SX3 @ SX0 ) )
                          | ( in @ SX2 @ SX1 ) ) ) )
            | ~ ( ~ ! [SX2: $i] :
                      ~ ( ~ ( ~ ( in @ SX2 @ SX1 )
                            | ~ ! [SX3: $i] :
                                  ~ ~ ( ~ ( in @ SX2 @ SX3 )
                                      | ~ ( in @ SX3 @ SX0 ) ) )
                        | ~ ( ~ ~ ! [SX3: $i] :
                                    ~ ~ ( ~ ( in @ SX2 @ SX3 )
                                        | ~ ( in @ SX3 @ SX0 ) )
                            | ( in @ SX2 @ SX1 ) ) )
                | ( SX1
                  = ( union @ SX0 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[165]) ).

thf(193,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_union2 @ SX0 @ SX1 )
            = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[146]) ).

thf(194,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ( ( ( singleton @ SX0 )
           != ( unordered_pair @ SX1 @ SX2 ) )
          | ( SX1 = SX2 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[156]) ).

thf(195,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ( SX2
                 != ( set_intersection2 @ SX0 @ SX1 ) )
                | ! [SX3: $i] :
                    ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                          | ~ ( ~ ( in @ SX3 @ SX0 )
                              | ~ ( in @ SX3 @ SX1 ) ) )
                      | ~ ( ~ ~ ( ~ ( in @ SX3 @ SX0 )
                                | ~ ( in @ SX3 @ SX1 ) )
                          | ( in @ SX3 @ SX2 ) ) ) )
            | ~ ( ~ ! [SX3: $i] :
                      ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                            | ~ ( ~ ( in @ SX3 @ SX0 )
                                | ~ ( in @ SX3 @ SX1 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SX3 @ SX0 )
                                  | ~ ( in @ SX3 @ SX1 ) )
                            | ( in @ SX3 @ SX2 ) ) )
                | ( SX2
                  = ( set_intersection2 @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[164]) ).

thf(196,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ( SX2
                 != ( set_difference @ SX0 @ SX1 ) )
                | ! [SX3: $i] :
                    ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                          | ~ ( ~ ( in @ SX3 @ SX0 )
                              | ~ ~ ( in @ SX3 @ SX1 ) ) )
                      | ~ ( ~ ~ ( ~ ( in @ SX3 @ SX0 )
                                | ~ ~ ( in @ SX3 @ SX1 ) )
                          | ( in @ SX3 @ SX2 ) ) ) )
            | ~ ( ~ ! [SX3: $i] :
                      ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                            | ~ ( ~ ( in @ SX3 @ SX0 )
                                | ~ ~ ( in @ SX3 @ SX1 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SX3 @ SX0 )
                                  | ~ ~ ( in @ SX3 @ SX1 ) )
                            | ( in @ SX3 @ SX2 ) ) )
                | ( SX2
                  = ( set_difference @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[166]) ).

thf(197,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ( SX2
                 != ( set_union2 @ SX0 @ SX1 ) )
                | ! [SX3: $i] :
                    ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                          | ( in @ SX3 @ SX0 )
                          | ( in @ SX3 @ SX1 ) )
                      | ~ ( ~ ( ( in @ SX3 @ SX0 )
                              | ( in @ SX3 @ SX1 ) )
                          | ( in @ SX3 @ SX2 ) ) ) )
            | ~ ( ~ ! [SX3: $i] :
                      ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                            | ( in @ SX3 @ SX0 )
                            | ( in @ SX3 @ SX1 ) )
                        | ~ ( ~ ( ( in @ SX3 @ SX0 )
                                | ( in @ SX3 @ SX1 ) )
                            | ( in @ SX3 @ SX2 ) ) )
                | ( SX2
                  = ( set_union2 @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[162]) ).

thf(198,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[157]) ).

thf(199,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ~ ( in @ SX0 @ SX1 )
          | ( disjoint @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[144]) ).

thf(200,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( ( set_union2 @ ( singleton @ SX0 ) @ SX1 )
            = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[142]) ).

thf(201,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ( SX2
                 != ( unordered_pair @ SX0 @ SX1 ) )
                | ! [SX3: $i] :
                    ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                          | ( SX3 = SX0 )
                          | ( SX3 = SX1 ) )
                      | ~ ( ~ ( ( SX3 = SX0 )
                              | ( SX3 = SX1 ) )
                          | ( in @ SX3 @ SX2 ) ) ) )
            | ~ ( ~ ! [SX3: $i] :
                      ~ ( ~ ( ~ ( in @ SX3 @ SX2 )
                            | ( SX3 = SX0 )
                            | ( SX3 = SX1 ) )
                        | ~ ( ~ ( ( SX3 = SX0 )
                                | ( SX3 = SX1 ) )
                            | ( in @ SX3 @ SX2 ) ) )
                | ( SX2
                  = ( unordered_pair @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[161]) ).

thf(202,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ~ ( ~ ( disjoint @ ( singleton @ SX0 ) @ SX1 )
              | ~ ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[143]) ).

thf(203,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ! [SX2: $i] :
                ~ ( ~ ( ~ ( in @ SX2 @ SX0 )
                      | ( in @ SX2 @ SX1 ) )
                  | ~ ( ~ ( in @ SX2 @ SX1 )
                      | ( in @ SX2 @ SX0 ) ) )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[181]) ).

thf(204,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( SX1
                 != ( singleton @ SX0 ) )
                | ! [SX2: $i] :
                    ~ ( ~ ( ~ ( in @ SX2 @ SX1 )
                          | ( SX2 = SX0 ) )
                      | ~ ( ( SX2 != SX0 )
                          | ( in @ SX2 @ SX1 ) ) ) )
            | ~ ( ~ ! [SX2: $i] :
                      ~ ( ~ ( ~ ( in @ SX2 @ SX1 )
                            | ( SX2 = SX0 ) )
                        | ~ ( ( SX2 != SX0 )
                            | ( in @ SX2 @ SX1 ) ) )
                | ( SX1
                  = ( singleton @ SX0 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[159]) ).

thf(205,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ( ( SX0 != empty_set )
                | ! [SX1: $i] :
                    ~ ( in @ SX1 @ SX0 ) )
            | ~ ( ~ ! [SX1: $i] :
                      ~ ( in @ SX1 @ SX0 )
                | ( SX0 = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[160]) ).

thf(206,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ ( singleton @ SX1 ) )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[152]) ).

thf(207,plain,
    ( ( ! [SX0: $i] :
          ( ( singleton @ SX0 )
         != empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[141]) ).

thf(208,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
                | ( in @ SX0 @ SX1 ) )
            | ~ ( ~ ( in @ SX0 @ SX1 )
                | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[145]) ).

thf(209,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ~ ( ~ ( in @ SX0 @ SX1 )
              | ~ ( empty @ SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[182]) ).

thf(210,plain,
    ! [SV1: $i] :
      ( ( ! [SY82: $i] :
            ( ( set_union2 @ SV1 @ ( set_difference @ SY82 @ SV1 ) )
            = ( set_union2 @ SV1 @ SY82 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[148]) ).

thf(211,plain,
    ! [SV2: $i] :
      ( ( ! [SY83: $i] :
            ( ( set_difference @ ( set_union2 @ SV2 @ SY83 ) @ SY83 )
            = ( set_difference @ SV2 @ SY83 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[150]) ).

thf(212,plain,
    ! [SV3: $i] :
      ( ( ( unordered_pair @ SV3 @ SV3 )
        = ( singleton @ SV3 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[151]) ).

thf(213,plain,
    ! [SV4: $i] :
      ( ( ! [SY84: $i] : ( subset @ SV4 @ ( set_union2 @ SV4 @ SY84 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[153]) ).

thf(214,plain,
    ! [SV5: $i] :
      ( ( ! [SY85: $i] :
            ( ( set_union2 @ SV5 @ SY85 )
            = ( set_union2 @ SY85 @ SV5 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[158]) ).

thf(215,plain,
    ! [SV6: $i] :
      ( ( ! [SY86: $i] :
            ( ( set_union2 @ SV6 @ SV6 )
            = SV6 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[179]) ).

thf(216,plain,
    ! [SV7: $i] :
      ( ( ( set_union2 @ SV7 @ empty_set )
        = SV7 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[180]) ).

thf(217,plain,
    ( ( ( set_union2 @ ( singleton @ sK1_A ) @ sK2_SY81 )
      = sK2_SY81 )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[184]) ).

thf(218,plain,
    ! [SV8: $i] :
      ( ( ! [SY87: $i] :
            ( ~ ~ ( empty @ SV8 )
            | ~ ( empty @ ( set_union2 @ SV8 @ SY87 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[185]) ).

thf(219,plain,
    ! [SV9: $i] :
      ( ( ! [SY88: $i] :
            ~ ( ~ ~ ~ ( ~ ~ ( disjoint @ SV9 @ SY88 )
                      | ~ ! [SY89: $i] :
                            ~ ~ ( ~ ( in @ SY89 @ SV9 )
                                | ~ ( in @ SY89 @ SY88 ) ) )
              | ~ ~ ~ ( ~ ~ ! [SY90: $i] :
                              ~ ~ ( ~ ( in @ SY90 @ SV9 )
                                  | ~ ( in @ SY90 @ SY88 ) )
                      | ~ ( disjoint @ SV9 @ SY88 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[186]) ).

thf(220,plain,
    ! [SV10: $i] :
      ( ( ! [SY91: $i] :
            ~ ( ~ ( ~ ( subset @ SV10 @ SY91 )
                  | ! [SY92: $i] :
                      ( ~ ( in @ SY92 @ SV10 )
                      | ( in @ SY92 @ SY91 ) ) )
              | ~ ( ~ ! [SY93: $i] :
                        ( ~ ( in @ SY93 @ SV10 )
                        | ( in @ SY93 @ SY91 ) )
                  | ( subset @ SV10 @ SY91 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[187]) ).

thf(221,plain,
    ! [SV11: $i] :
      ( ( ! [SY94: $i] :
            ~ ( ~ ( ~ ( subset @ ( singleton @ SV11 ) @ SY94 )
                  | ( in @ SV11 @ SY94 ) )
              | ~ ( ~ ( in @ SV11 @ SY94 )
                  | ( subset @ ( singleton @ SV11 ) @ SY94 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[188]) ).

thf(222,plain,
    ! [SV12: $i] :
      ( ( ! [SY95: $i] :
            ( ~ ~ ( empty @ SV12 )
            | ~ ( empty @ ( set_union2 @ SY95 @ SV12 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[189]) ).

thf(223,plain,
    ! [SV13: $i] :
      ( ( ! [SY96: $i,SY97: $i] :
            ( ~ ~ ( ~ ( subset @ SV13 @ SY96 )
                  | ~ ( subset @ SY97 @ SY96 ) )
            | ( subset @ ( set_union2 @ SV13 @ SY97 ) @ SY96 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[190]) ).

thf(224,plain,
    ! [SV14: $i] :
      ( ( ! [SY98: $i,SY99: $i] :
            ( ( ( singleton @ SV14 )
             != ( unordered_pair @ SY98 @ SY99 ) )
            | ( SV14 = SY98 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[191]) ).

thf(225,plain,
    ! [SV15: $i] :
      ( ( ! [SY100: $i] :
            ~ ( ~ ( ( SY100
                   != ( union @ SV15 ) )
                  | ! [SY101: $i] :
                      ~ ( ~ ( ~ ( in @ SY101 @ SY100 )
                            | ~ ! [SY102: $i] :
                                  ~ ~ ( ~ ( in @ SY101 @ SY102 )
                                      | ~ ( in @ SY102 @ SV15 ) ) )
                        | ~ ( ~ ~ ! [SY103: $i] :
                                    ~ ~ ( ~ ( in @ SY101 @ SY103 )
                                        | ~ ( in @ SY103 @ SV15 ) )
                            | ( in @ SY101 @ SY100 ) ) ) )
              | ~ ( ~ ! [SY104: $i] :
                        ~ ( ~ ( ~ ( in @ SY104 @ SY100 )
                              | ~ ! [SY105: $i] :
                                    ~ ~ ( ~ ( in @ SY104 @ SY105 )
                                        | ~ ( in @ SY105 @ SV15 ) ) )
                          | ~ ( ~ ~ ! [SY106: $i] :
                                      ~ ~ ( ~ ( in @ SY104 @ SY106 )
                                          | ~ ( in @ SY106 @ SV15 ) )
                              | ( in @ SY104 @ SY100 ) ) )
                  | ( SY100
                    = ( union @ SV15 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[192]) ).

thf(226,plain,
    ! [SV16: $i] :
      ( ( ! [SY107: $i] :
            ( ~ ( subset @ SV16 @ SY107 )
            | ( ( set_union2 @ SV16 @ SY107 )
              = SY107 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[193]) ).

thf(227,plain,
    ! [SV17: $i] :
      ( ( ! [SY108: $i,SY109: $i] :
            ( ( ( singleton @ SV17 )
             != ( unordered_pair @ SY108 @ SY109 ) )
            | ( SY108 = SY109 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[194]) ).

thf(228,plain,
    ! [SV18: $i] :
      ( ( ! [SY110: $i,SY111: $i] :
            ~ ( ~ ( ( SY111
                   != ( set_intersection2 @ SV18 @ SY110 ) )
                  | ! [SY112: $i] :
                      ~ ( ~ ( ~ ( in @ SY112 @ SY111 )
                            | ~ ( ~ ( in @ SY112 @ SV18 )
                                | ~ ( in @ SY112 @ SY110 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SY112 @ SV18 )
                                  | ~ ( in @ SY112 @ SY110 ) )
                            | ( in @ SY112 @ SY111 ) ) ) )
              | ~ ( ~ ! [SY113: $i] :
                        ~ ( ~ ( ~ ( in @ SY113 @ SY111 )
                              | ~ ( ~ ( in @ SY113 @ SV18 )
                                  | ~ ( in @ SY113 @ SY110 ) ) )
                          | ~ ( ~ ~ ( ~ ( in @ SY113 @ SV18 )
                                    | ~ ( in @ SY113 @ SY110 ) )
                              | ( in @ SY113 @ SY111 ) ) )
                  | ( SY111
                    = ( set_intersection2 @ SV18 @ SY110 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[195]) ).

thf(229,plain,
    ! [SV19: $i] :
      ( ( ! [SY114: $i,SY115: $i] :
            ~ ( ~ ( ( SY115
                   != ( set_difference @ SV19 @ SY114 ) )
                  | ! [SY116: $i] :
                      ~ ( ~ ( ~ ( in @ SY116 @ SY115 )
                            | ~ ( ~ ( in @ SY116 @ SV19 )
                                | ~ ~ ( in @ SY116 @ SY114 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SY116 @ SV19 )
                                  | ~ ~ ( in @ SY116 @ SY114 ) )
                            | ( in @ SY116 @ SY115 ) ) ) )
              | ~ ( ~ ! [SY117: $i] :
                        ~ ( ~ ( ~ ( in @ SY117 @ SY115 )
                              | ~ ( ~ ( in @ SY117 @ SV19 )
                                  | ~ ~ ( in @ SY117 @ SY114 ) ) )
                          | ~ ( ~ ~ ( ~ ( in @ SY117 @ SV19 )
                                    | ~ ~ ( in @ SY117 @ SY114 ) )
                              | ( in @ SY117 @ SY115 ) ) )
                  | ( SY115
                    = ( set_difference @ SV19 @ SY114 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[196]) ).

thf(230,plain,
    ! [SV20: $i] :
      ( ( ! [SY118: $i,SY119: $i] :
            ~ ( ~ ( ( SY119
                   != ( set_union2 @ SV20 @ SY118 ) )
                  | ! [SY120: $i] :
                      ~ ( ~ ( ~ ( in @ SY120 @ SY119 )
                            | ( in @ SY120 @ SV20 )
                            | ( in @ SY120 @ SY118 ) )
                        | ~ ( ~ ( ( in @ SY120 @ SV20 )
                                | ( in @ SY120 @ SY118 ) )
                            | ( in @ SY120 @ SY119 ) ) ) )
              | ~ ( ~ ! [SY121: $i] :
                        ~ ( ~ ( ~ ( in @ SY121 @ SY119 )
                              | ( in @ SY121 @ SV20 )
                              | ( in @ SY121 @ SY118 ) )
                          | ~ ( ~ ( ( in @ SY121 @ SV20 )
                                  | ( in @ SY121 @ SY118 ) )
                              | ( in @ SY121 @ SY119 ) ) )
                  | ( SY119
                    = ( set_union2 @ SV20 @ SY118 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[197]) ).

thf(231,plain,
    ! [SV21: $i] :
      ( ( ! [SY122: $i] :
            ( ~ ( in @ SV21 @ SY122 )
            | ~ ( in @ SY122 @ SV21 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[198]) ).

thf(232,plain,
    ! [SV22: $i] :
      ( ( ! [SY123: $i] :
            ( ~ ~ ( in @ SV22 @ SY123 )
            | ( disjoint @ ( singleton @ SV22 ) @ SY123 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[199]) ).

thf(233,plain,
    ! [SV23: $i] :
      ( ( ! [SY124: $i] :
            ( ~ ( in @ SV23 @ SY124 )
            | ( ( set_union2 @ ( singleton @ SV23 ) @ SY124 )
              = SY124 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[200]) ).

thf(234,plain,
    ! [SV24: $i] :
      ( ( ! [SY125: $i,SY126: $i] :
            ~ ( ~ ( ( SY126
                   != ( unordered_pair @ SV24 @ SY125 ) )
                  | ! [SY127: $i] :
                      ~ ( ~ ( ~ ( in @ SY127 @ SY126 )
                            | ( SY127 = SV24 )
                            | ( SY127 = SY125 ) )
                        | ~ ( ~ ( ( SY127 = SV24 )
                                | ( SY127 = SY125 ) )
                            | ( in @ SY127 @ SY126 ) ) ) )
              | ~ ( ~ ! [SY128: $i] :
                        ~ ( ~ ( ~ ( in @ SY128 @ SY126 )
                              | ( SY128 = SV24 )
                              | ( SY128 = SY125 ) )
                          | ~ ( ~ ( ( SY128 = SV24 )
                                  | ( SY128 = SY125 ) )
                              | ( in @ SY128 @ SY126 ) ) )
                  | ( SY126
                    = ( unordered_pair @ SV24 @ SY125 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[201]) ).

thf(235,plain,
    ! [SV25: $i] :
      ( ( ! [SY129: $i] :
            ~ ~ ( ~ ( disjoint @ ( singleton @ SV25 ) @ SY129 )
                | ~ ( in @ SV25 @ SY129 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[202]) ).

thf(236,plain,
    ! [SV26: $i] :
      ( ( ! [SY130: $i] :
            ( ~ ! [SY131: $i] :
                  ~ ( ~ ( ~ ( in @ SY131 @ SV26 )
                        | ( in @ SY131 @ SY130 ) )
                    | ~ ( ~ ( in @ SY131 @ SY130 )
                        | ( in @ SY131 @ SV26 ) ) )
            | ( SV26 = SY130 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[203]) ).

thf(237,plain,
    ! [SV27: $i] :
      ( ( ! [SY132: $i] :
            ~ ( ~ ( ( SY132
                   != ( singleton @ SV27 ) )
                  | ! [SY133: $i] :
                      ~ ( ~ ( ~ ( in @ SY133 @ SY132 )
                            | ( SY133 = SV27 ) )
                        | ~ ( ( SY133 != SV27 )
                            | ( in @ SY133 @ SY132 ) ) ) )
              | ~ ( ~ ! [SY134: $i] :
                        ~ ( ~ ( ~ ( in @ SY134 @ SY132 )
                              | ( SY134 = SV27 ) )
                          | ~ ( ( SY134 != SV27 )
                              | ( in @ SY134 @ SY132 ) ) )
                  | ( SY132
                    = ( singleton @ SV27 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[204]) ).

thf(238,plain,
    ! [SV28: $i] :
      ( ( ~ ( ~ ( ( SV28 != empty_set )
                | ! [SY135: $i] :
                    ~ ( in @ SY135 @ SV28 ) )
            | ~ ( ~ ! [SY136: $i] :
                      ~ ( in @ SY136 @ SV28 )
                | ( SV28 = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[205]) ).

thf(239,plain,
    ! [SV29: $i] :
      ( ( ! [SY137: $i] :
            ( ~ ( subset @ ( singleton @ SV29 ) @ ( singleton @ SY137 ) )
            | ( SV29 = SY137 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[206]) ).

thf(240,plain,
    ! [SV30: $i] :
      ( ( ( singleton @ SV30 )
       != empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[207]) ).

thf(241,plain,
    ! [SV31: $i] :
      ( ( ! [SY138: $i] :
            ~ ( ~ ( ~ ( subset @ ( singleton @ SV31 ) @ SY138 )
                  | ( in @ SV31 @ SY138 ) )
              | ~ ( ~ ( in @ SV31 @ SY138 )
                  | ( subset @ ( singleton @ SV31 ) @ SY138 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[208]) ).

thf(242,plain,
    ! [SV32: $i] :
      ( ( ! [SY139: $i] :
            ~ ~ ( ~ ( in @ SV32 @ SY139 )
                | ~ ( empty @ SY139 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[209]) ).

thf(243,plain,
    ! [SV33: $i,SV1: $i] :
      ( ( ( set_union2 @ SV1 @ ( set_difference @ SV33 @ SV1 ) )
        = ( set_union2 @ SV1 @ SV33 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[210]) ).

thf(244,plain,
    ! [SV34: $i,SV2: $i] :
      ( ( ( set_difference @ ( set_union2 @ SV2 @ SV34 ) @ SV34 )
        = ( set_difference @ SV2 @ SV34 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[211]) ).

thf(245,plain,
    ! [SV35: $i,SV4: $i] :
      ( ( subset @ SV4 @ ( set_union2 @ SV4 @ SV35 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[213]) ).

thf(246,plain,
    ! [SV36: $i,SV5: $i] :
      ( ( ( set_union2 @ SV5 @ SV36 )
        = ( set_union2 @ SV36 @ SV5 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[214]) ).

thf(247,plain,
    ! [SV6: $i] :
      ( ( ( set_union2 @ SV6 @ SV6 )
        = SV6 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[215]) ).

thf(248,plain,
    ! [SV38: $i,SV8: $i] :
      ( ( ~ ~ ( empty @ SV8 )
        | ~ ( empty @ ( set_union2 @ SV8 @ SV38 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[218]) ).

thf(249,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ( ~ ~ ~ ( ~ ~ ( disjoint @ SV9 @ SV39 )
                    | ~ ! [SY140: $i] :
                          ~ ~ ( ~ ( in @ SY140 @ SV9 )
                              | ~ ( in @ SY140 @ SV39 ) ) )
            | ~ ~ ~ ( ~ ~ ! [SY141: $i] :
                            ~ ~ ( ~ ( in @ SY141 @ SV9 )
                                | ~ ( in @ SY141 @ SV39 ) )
                    | ~ ( disjoint @ SV9 @ SV39 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[219]) ).

thf(250,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ~ ( ~ ( ~ ( subset @ SV10 @ SV40 )
                | ! [SY142: $i] :
                    ( ~ ( in @ SY142 @ SV10 )
                    | ( in @ SY142 @ SV40 ) ) )
            | ~ ( ~ ! [SY143: $i] :
                      ( ~ ( in @ SY143 @ SV10 )
                      | ( in @ SY143 @ SV40 ) )
                | ( subset @ SV10 @ SV40 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[220]) ).

thf(251,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ~ ( ~ ( ~ ( subset @ ( singleton @ SV11 ) @ SV41 )
                | ( in @ SV11 @ SV41 ) )
            | ~ ( ~ ( in @ SV11 @ SV41 )
                | ( subset @ ( singleton @ SV11 ) @ SV41 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[221]) ).

thf(252,plain,
    ! [SV42: $i,SV12: $i] :
      ( ( ~ ~ ( empty @ SV12 )
        | ~ ( empty @ ( set_union2 @ SV42 @ SV12 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[222]) ).

thf(253,plain,
    ! [SV43: $i,SV13: $i] :
      ( ( ! [SY144: $i] :
            ( ~ ~ ( ~ ( subset @ SV13 @ SV43 )
                  | ~ ( subset @ SY144 @ SV43 ) )
            | ( subset @ ( set_union2 @ SV13 @ SY144 ) @ SV43 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[223]) ).

thf(254,plain,
    ! [SV44: $i,SV14: $i] :
      ( ( ! [SY145: $i] :
            ( ( ( singleton @ SV14 )
             != ( unordered_pair @ SV44 @ SY145 ) )
            | ( SV14 = SV44 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[224]) ).

thf(255,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ~ ( ~ ( ( SV45
                 != ( union @ SV15 ) )
                | ! [SY146: $i] :
                    ~ ( ~ ( ~ ( in @ SY146 @ SV45 )
                          | ~ ! [SY102: $i] :
                                ~ ~ ( ~ ( in @ SY146 @ SY102 )
                                    | ~ ( in @ SY102 @ SV15 ) ) )
                      | ~ ( ~ ~ ! [SY103: $i] :
                                  ~ ~ ( ~ ( in @ SY146 @ SY103 )
                                      | ~ ( in @ SY103 @ SV15 ) )
                          | ( in @ SY146 @ SV45 ) ) ) )
            | ~ ( ~ ! [SY149: $i] :
                      ~ ( ~ ( ~ ( in @ SY149 @ SV45 )
                            | ~ ! [SY105: $i] :
                                  ~ ~ ( ~ ( in @ SY149 @ SY105 )
                                      | ~ ( in @ SY105 @ SV15 ) ) )
                        | ~ ( ~ ~ ! [SY106: $i] :
                                    ~ ~ ( ~ ( in @ SY149 @ SY106 )
                                        | ~ ( in @ SY106 @ SV15 ) )
                            | ( in @ SY149 @ SV45 ) ) )
                | ( SV45
                  = ( union @ SV15 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[225]) ).

thf(256,plain,
    ! [SV46: $i,SV16: $i] :
      ( ( ~ ( subset @ SV16 @ SV46 )
        | ( ( set_union2 @ SV16 @ SV46 )
          = SV46 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[226]) ).

thf(257,plain,
    ! [SV47: $i,SV17: $i] :
      ( ( ! [SY152: $i] :
            ( ( ( singleton @ SV17 )
             != ( unordered_pair @ SV47 @ SY152 ) )
            | ( SV47 = SY152 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[227]) ).

thf(258,plain,
    ! [SV48: $i,SV18: $i] :
      ( ( ! [SY153: $i] :
            ~ ( ~ ( ( SY153
                   != ( set_intersection2 @ SV18 @ SV48 ) )
                  | ! [SY154: $i] :
                      ~ ( ~ ( ~ ( in @ SY154 @ SY153 )
                            | ~ ( ~ ( in @ SY154 @ SV18 )
                                | ~ ( in @ SY154 @ SV48 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SY154 @ SV18 )
                                  | ~ ( in @ SY154 @ SV48 ) )
                            | ( in @ SY154 @ SY153 ) ) ) )
              | ~ ( ~ ! [SY155: $i] :
                        ~ ( ~ ( ~ ( in @ SY155 @ SY153 )
                              | ~ ( ~ ( in @ SY155 @ SV18 )
                                  | ~ ( in @ SY155 @ SV48 ) ) )
                          | ~ ( ~ ~ ( ~ ( in @ SY155 @ SV18 )
                                    | ~ ( in @ SY155 @ SV48 ) )
                              | ( in @ SY155 @ SY153 ) ) )
                  | ( SY153
                    = ( set_intersection2 @ SV18 @ SV48 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[228]) ).

thf(259,plain,
    ! [SV49: $i,SV19: $i] :
      ( ( ! [SY156: $i] :
            ~ ( ~ ( ( SY156
                   != ( set_difference @ SV19 @ SV49 ) )
                  | ! [SY157: $i] :
                      ~ ( ~ ( ~ ( in @ SY157 @ SY156 )
                            | ~ ( ~ ( in @ SY157 @ SV19 )
                                | ~ ~ ( in @ SY157 @ SV49 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SY157 @ SV19 )
                                  | ~ ~ ( in @ SY157 @ SV49 ) )
                            | ( in @ SY157 @ SY156 ) ) ) )
              | ~ ( ~ ! [SY158: $i] :
                        ~ ( ~ ( ~ ( in @ SY158 @ SY156 )
                              | ~ ( ~ ( in @ SY158 @ SV19 )
                                  | ~ ~ ( in @ SY158 @ SV49 ) ) )
                          | ~ ( ~ ~ ( ~ ( in @ SY158 @ SV19 )
                                    | ~ ~ ( in @ SY158 @ SV49 ) )
                              | ( in @ SY158 @ SY156 ) ) )
                  | ( SY156
                    = ( set_difference @ SV19 @ SV49 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[229]) ).

thf(260,plain,
    ! [SV50: $i,SV20: $i] :
      ( ( ! [SY159: $i] :
            ~ ( ~ ( ( SY159
                   != ( set_union2 @ SV20 @ SV50 ) )
                  | ! [SY160: $i] :
                      ~ ( ~ ( ~ ( in @ SY160 @ SY159 )
                            | ( in @ SY160 @ SV20 )
                            | ( in @ SY160 @ SV50 ) )
                        | ~ ( ~ ( ( in @ SY160 @ SV20 )
                                | ( in @ SY160 @ SV50 ) )
                            | ( in @ SY160 @ SY159 ) ) ) )
              | ~ ( ~ ! [SY161: $i] :
                        ~ ( ~ ( ~ ( in @ SY161 @ SY159 )
                              | ( in @ SY161 @ SV20 )
                              | ( in @ SY161 @ SV50 ) )
                          | ~ ( ~ ( ( in @ SY161 @ SV20 )
                                  | ( in @ SY161 @ SV50 ) )
                              | ( in @ SY161 @ SY159 ) ) )
                  | ( SY159
                    = ( set_union2 @ SV20 @ SV50 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[230]) ).

thf(261,plain,
    ! [SV51: $i,SV21: $i] :
      ( ( ~ ( in @ SV21 @ SV51 )
        | ~ ( in @ SV51 @ SV21 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[231]) ).

thf(262,plain,
    ! [SV52: $i,SV22: $i] :
      ( ( ~ ~ ( in @ SV22 @ SV52 )
        | ( disjoint @ ( singleton @ SV22 ) @ SV52 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[232]) ).

thf(263,plain,
    ! [SV53: $i,SV23: $i] :
      ( ( ~ ( in @ SV23 @ SV53 )
        | ( ( set_union2 @ ( singleton @ SV23 ) @ SV53 )
          = SV53 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[233]) ).

thf(264,plain,
    ! [SV54: $i,SV24: $i] :
      ( ( ! [SY162: $i] :
            ~ ( ~ ( ( SY162
                   != ( unordered_pair @ SV24 @ SV54 ) )
                  | ! [SY163: $i] :
                      ~ ( ~ ( ~ ( in @ SY163 @ SY162 )
                            | ( SY163 = SV24 )
                            | ( SY163 = SV54 ) )
                        | ~ ( ~ ( ( SY163 = SV24 )
                                | ( SY163 = SV54 ) )
                            | ( in @ SY163 @ SY162 ) ) ) )
              | ~ ( ~ ! [SY164: $i] :
                        ~ ( ~ ( ~ ( in @ SY164 @ SY162 )
                              | ( SY164 = SV24 )
                              | ( SY164 = SV54 ) )
                          | ~ ( ~ ( ( SY164 = SV24 )
                                  | ( SY164 = SV54 ) )
                              | ( in @ SY164 @ SY162 ) ) )
                  | ( SY162
                    = ( unordered_pair @ SV24 @ SV54 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[234]) ).

thf(265,plain,
    ! [SV55: $i,SV25: $i] :
      ( ( ~ ~ ( ~ ( disjoint @ ( singleton @ SV25 ) @ SV55 )
              | ~ ( in @ SV25 @ SV55 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[235]) ).

thf(266,plain,
    ! [SV56: $i,SV26: $i] :
      ( ( ~ ! [SY165: $i] :
              ~ ( ~ ( ~ ( in @ SY165 @ SV26 )
                    | ( in @ SY165 @ SV56 ) )
                | ~ ( ~ ( in @ SY165 @ SV56 )
                    | ( in @ SY165 @ SV26 ) ) )
        | ( SV26 = SV56 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[236]) ).

thf(267,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ~ ( ~ ( ( SV57
                 != ( singleton @ SV27 ) )
                | ! [SY166: $i] :
                    ~ ( ~ ( ~ ( in @ SY166 @ SV57 )
                          | ( SY166 = SV27 ) )
                      | ~ ( ( SY166 != SV27 )
                          | ( in @ SY166 @ SV57 ) ) ) )
            | ~ ( ~ ! [SY167: $i] :
                      ~ ( ~ ( ~ ( in @ SY167 @ SV57 )
                            | ( SY167 = SV27 ) )
                        | ~ ( ( SY167 != SV27 )
                            | ( in @ SY167 @ SV57 ) ) )
                | ( SV57
                  = ( singleton @ SV27 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[237]) ).

thf(268,plain,
    ! [SV28: $i] :
      ( ( ~ ( ( SV28 != empty_set )
            | ! [SY135: $i] :
                ~ ( in @ SY135 @ SV28 ) )
        | ~ ( ~ ! [SY136: $i] :
                  ~ ( in @ SY136 @ SV28 )
            | ( SV28 = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[238]) ).

thf(269,plain,
    ! [SV58: $i,SV29: $i] :
      ( ( ~ ( subset @ ( singleton @ SV29 ) @ ( singleton @ SV58 ) )
        | ( SV29 = SV58 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[239]) ).

thf(270,plain,
    ! [SV30: $i] :
      ( ( ( singleton @ SV30 )
        = empty_set )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[240]) ).

thf(271,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ~ ( ~ ( ~ ( subset @ ( singleton @ SV31 ) @ SV59 )
                | ( in @ SV31 @ SV59 ) )
            | ~ ( ~ ( in @ SV31 @ SV59 )
                | ( subset @ ( singleton @ SV31 ) @ SV59 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[241]) ).

thf(272,plain,
    ! [SV60: $i,SV32: $i] :
      ( ( ~ ~ ( ~ ( in @ SV32 @ SV60 )
              | ~ ( empty @ SV60 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[242]) ).

thf(273,plain,
    ! [SV38: $i,SV8: $i] :
      ( ( ( ~ ~ ( empty @ SV8 ) )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV8 @ SV38 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[248]) ).

thf(274,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ~ ( ~ ~ ( disjoint @ SV9 @ SV39 )
                | ~ ! [SY140: $i] :
                      ~ ~ ( ~ ( in @ SY140 @ SV9 )
                          | ~ ( in @ SY140 @ SV39 ) ) )
        | ~ ~ ~ ( ~ ~ ! [SY141: $i] :
                        ~ ~ ( ~ ( in @ SY141 @ SV9 )
                            | ~ ( in @ SY141 @ SV39 ) )
                | ~ ( disjoint @ SV9 @ SV39 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[249]) ).

thf(275,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ~ ( ~ ( subset @ SV10 @ SV40 )
            | ! [SY142: $i] :
                ( ~ ( in @ SY142 @ SV10 )
                | ( in @ SY142 @ SV40 ) ) )
        | ~ ( ~ ! [SY143: $i] :
                  ( ~ ( in @ SY143 @ SV10 )
                  | ( in @ SY143 @ SV40 ) )
            | ( subset @ SV10 @ SV40 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[250]) ).

thf(276,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ~ ( ~ ( subset @ ( singleton @ SV11 ) @ SV41 )
            | ( in @ SV11 @ SV41 ) )
        | ~ ( ~ ( in @ SV11 @ SV41 )
            | ( subset @ ( singleton @ SV11 ) @ SV41 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[251]) ).

thf(277,plain,
    ! [SV42: $i,SV12: $i] :
      ( ( ( ~ ~ ( empty @ SV12 ) )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV42 @ SV12 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[252]) ).

thf(278,plain,
    ! [SV61: $i,SV43: $i,SV13: $i] :
      ( ( ~ ~ ( ~ ( subset @ SV13 @ SV43 )
              | ~ ( subset @ SV61 @ SV43 ) )
        | ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[253]) ).

thf(279,plain,
    ! [SV62: $i,SV44: $i,SV14: $i] :
      ( ( ( ( singleton @ SV14 )
         != ( unordered_pair @ SV44 @ SV62 ) )
        | ( SV14 = SV44 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[254]) ).

thf(280,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ~ ( ( SV45
             != ( union @ SV15 ) )
            | ! [SY146: $i] :
                ~ ( ~ ( ~ ( in @ SY146 @ SV45 )
                      | ~ ! [SY102: $i] :
                            ~ ~ ( ~ ( in @ SY146 @ SY102 )
                                | ~ ( in @ SY102 @ SV15 ) ) )
                  | ~ ( ~ ~ ! [SY103: $i] :
                              ~ ~ ( ~ ( in @ SY146 @ SY103 )
                                  | ~ ( in @ SY103 @ SV15 ) )
                      | ( in @ SY146 @ SV45 ) ) ) )
        | ~ ( ~ ! [SY149: $i] :
                  ~ ( ~ ( ~ ( in @ SY149 @ SV45 )
                        | ~ ! [SY105: $i] :
                              ~ ~ ( ~ ( in @ SY149 @ SY105 )
                                  | ~ ( in @ SY105 @ SV15 ) ) )
                    | ~ ( ~ ~ ! [SY106: $i] :
                                ~ ~ ( ~ ( in @ SY149 @ SY106 )
                                    | ~ ( in @ SY106 @ SV15 ) )
                        | ( in @ SY149 @ SV45 ) ) )
            | ( SV45
              = ( union @ SV15 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[255]) ).

thf(281,plain,
    ! [SV46: $i,SV16: $i] :
      ( ( ( ~ ( subset @ SV16 @ SV46 ) )
        = $true )
      | ( ( ( set_union2 @ SV16 @ SV46 )
          = SV46 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[256]) ).

thf(282,plain,
    ! [SV63: $i,SV47: $i,SV17: $i] :
      ( ( ( ( singleton @ SV17 )
         != ( unordered_pair @ SV47 @ SV63 ) )
        | ( SV47 = SV63 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[257]) ).

thf(283,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ~ ( ~ ( ( SV64
                 != ( set_intersection2 @ SV18 @ SV48 ) )
                | ! [SY168: $i] :
                    ~ ( ~ ( ~ ( in @ SY168 @ SV64 )
                          | ~ ( ~ ( in @ SY168 @ SV18 )
                              | ~ ( in @ SY168 @ SV48 ) ) )
                      | ~ ( ~ ~ ( ~ ( in @ SY168 @ SV18 )
                                | ~ ( in @ SY168 @ SV48 ) )
                          | ( in @ SY168 @ SV64 ) ) ) )
            | ~ ( ~ ! [SY169: $i] :
                      ~ ( ~ ( ~ ( in @ SY169 @ SV64 )
                            | ~ ( ~ ( in @ SY169 @ SV18 )
                                | ~ ( in @ SY169 @ SV48 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SY169 @ SV18 )
                                  | ~ ( in @ SY169 @ SV48 ) )
                            | ( in @ SY169 @ SV64 ) ) )
                | ( SV64
                  = ( set_intersection2 @ SV18 @ SV48 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[258]) ).

thf(284,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ~ ( ~ ( ( SV65
                 != ( set_difference @ SV19 @ SV49 ) )
                | ! [SY170: $i] :
                    ~ ( ~ ( ~ ( in @ SY170 @ SV65 )
                          | ~ ( ~ ( in @ SY170 @ SV19 )
                              | ~ ~ ( in @ SY170 @ SV49 ) ) )
                      | ~ ( ~ ~ ( ~ ( in @ SY170 @ SV19 )
                                | ~ ~ ( in @ SY170 @ SV49 ) )
                          | ( in @ SY170 @ SV65 ) ) ) )
            | ~ ( ~ ! [SY171: $i] :
                      ~ ( ~ ( ~ ( in @ SY171 @ SV65 )
                            | ~ ( ~ ( in @ SY171 @ SV19 )
                                | ~ ~ ( in @ SY171 @ SV49 ) ) )
                        | ~ ( ~ ~ ( ~ ( in @ SY171 @ SV19 )
                                  | ~ ~ ( in @ SY171 @ SV49 ) )
                            | ( in @ SY171 @ SV65 ) ) )
                | ( SV65
                  = ( set_difference @ SV19 @ SV49 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[259]) ).

thf(285,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ~ ( ~ ( ( SV66
                 != ( set_union2 @ SV20 @ SV50 ) )
                | ! [SY172: $i] :
                    ~ ( ~ ( ~ ( in @ SY172 @ SV66 )
                          | ( in @ SY172 @ SV20 )
                          | ( in @ SY172 @ SV50 ) )
                      | ~ ( ~ ( ( in @ SY172 @ SV20 )
                              | ( in @ SY172 @ SV50 ) )
                          | ( in @ SY172 @ SV66 ) ) ) )
            | ~ ( ~ ! [SY173: $i] :
                      ~ ( ~ ( ~ ( in @ SY173 @ SV66 )
                            | ( in @ SY173 @ SV20 )
                            | ( in @ SY173 @ SV50 ) )
                        | ~ ( ~ ( ( in @ SY173 @ SV20 )
                                | ( in @ SY173 @ SV50 ) )
                            | ( in @ SY173 @ SV66 ) ) )
                | ( SV66
                  = ( set_union2 @ SV20 @ SV50 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[260]) ).

thf(286,plain,
    ! [SV51: $i,SV21: $i] :
      ( ( ( ~ ( in @ SV21 @ SV51 ) )
        = $true )
      | ( ( ~ ( in @ SV51 @ SV21 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[261]) ).

thf(287,plain,
    ! [SV52: $i,SV22: $i] :
      ( ( ( ~ ~ ( in @ SV22 @ SV52 ) )
        = $true )
      | ( ( disjoint @ ( singleton @ SV22 ) @ SV52 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[262]) ).

thf(288,plain,
    ! [SV53: $i,SV23: $i] :
      ( ( ( ~ ( in @ SV23 @ SV53 ) )
        = $true )
      | ( ( ( set_union2 @ ( singleton @ SV23 ) @ SV53 )
          = SV53 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[263]) ).

thf(289,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ~ ( ~ ( ( SV67
                 != ( unordered_pair @ SV24 @ SV54 ) )
                | ! [SY174: $i] :
                    ~ ( ~ ( ~ ( in @ SY174 @ SV67 )
                          | ( SY174 = SV24 )
                          | ( SY174 = SV54 ) )
                      | ~ ( ~ ( ( SY174 = SV24 )
                              | ( SY174 = SV54 ) )
                          | ( in @ SY174 @ SV67 ) ) ) )
            | ~ ( ~ ! [SY175: $i] :
                      ~ ( ~ ( ~ ( in @ SY175 @ SV67 )
                            | ( SY175 = SV24 )
                            | ( SY175 = SV54 ) )
                        | ~ ( ~ ( ( SY175 = SV24 )
                                | ( SY175 = SV54 ) )
                            | ( in @ SY175 @ SV67 ) ) )
                | ( SV67
                  = ( unordered_pair @ SV24 @ SV54 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[264]) ).

thf(290,plain,
    ! [SV55: $i,SV25: $i] :
      ( ( ~ ( ~ ( disjoint @ ( singleton @ SV25 ) @ SV55 )
            | ~ ( in @ SV25 @ SV55 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[265]) ).

thf(291,plain,
    ! [SV56: $i,SV26: $i] :
      ( ( ( ~ ! [SY165: $i] :
                ~ ( ~ ( ~ ( in @ SY165 @ SV26 )
                      | ( in @ SY165 @ SV56 ) )
                  | ~ ( ~ ( in @ SY165 @ SV56 )
                      | ( in @ SY165 @ SV26 ) ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[266]) ).

thf(292,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ~ ( ( SV57
             != ( singleton @ SV27 ) )
            | ! [SY166: $i] :
                ~ ( ~ ( ~ ( in @ SY166 @ SV57 )
                      | ( SY166 = SV27 ) )
                  | ~ ( ( SY166 != SV27 )
                      | ( in @ SY166 @ SV57 ) ) ) )
        | ~ ( ~ ! [SY167: $i] :
                  ~ ( ~ ( ~ ( in @ SY167 @ SV57 )
                        | ( SY167 = SV27 ) )
                    | ~ ( ( SY167 != SV27 )
                        | ( in @ SY167 @ SV57 ) ) )
            | ( SV57
              = ( singleton @ SV27 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[267]) ).

thf(293,plain,
    ! [SV28: $i] :
      ( ( ~ ( ( SV28 != empty_set )
            | ! [SY135: $i] :
                ~ ( in @ SY135 @ SV28 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[268]) ).

thf(294,plain,
    ! [SV28: $i] :
      ( ( ~ ( ~ ! [SY136: $i] :
                  ~ ( in @ SY136 @ SV28 )
            | ( SV28 = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[268]) ).

thf(295,plain,
    ! [SV58: $i,SV29: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV29 ) @ ( singleton @ SV58 ) ) )
        = $true )
      | ( ( SV29 = SV58 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[269]) ).

thf(296,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ~ ( ~ ( subset @ ( singleton @ SV31 ) @ SV59 )
            | ( in @ SV31 @ SV59 ) )
        | ~ ( ~ ( in @ SV31 @ SV59 )
            | ( subset @ ( singleton @ SV31 ) @ SV59 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[271]) ).

thf(297,plain,
    ! [SV60: $i,SV32: $i] :
      ( ( ~ ( ~ ( in @ SV32 @ SV60 )
            | ~ ( empty @ SV60 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[272]) ).

thf(298,plain,
    ! [SV38: $i,SV8: $i] :
      ( ( ( ~ ( empty @ SV8 ) )
        = $false )
      | ( ( ~ ( empty @ ( set_union2 @ SV8 @ SV38 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[273]) ).

thf(299,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ~ ( ~ ~ ( disjoint @ SV9 @ SV39 )
                | ~ ! [SY140: $i] :
                      ~ ~ ( ~ ( in @ SY140 @ SV9 )
                          | ~ ( in @ SY140 @ SV39 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[274]) ).

thf(300,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ~ ( ~ ~ ! [SY141: $i] :
                        ~ ~ ( ~ ( in @ SY141 @ SV9 )
                            | ~ ( in @ SY141 @ SV39 ) )
                | ~ ( disjoint @ SV9 @ SV39 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[274]) ).

thf(301,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ~ ( ~ ( subset @ SV10 @ SV40 )
            | ! [SY142: $i] :
                ( ~ ( in @ SY142 @ SV10 )
                | ( in @ SY142 @ SV40 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[275]) ).

thf(302,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ~ ( ~ ! [SY143: $i] :
                  ( ~ ( in @ SY143 @ SV10 )
                  | ( in @ SY143 @ SV40 ) )
            | ( subset @ SV10 @ SV40 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[275]) ).

thf(303,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ~ ( ~ ( subset @ ( singleton @ SV11 ) @ SV41 )
            | ( in @ SV11 @ SV41 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[276]) ).

thf(304,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ~ ( ~ ( in @ SV11 @ SV41 )
            | ( subset @ ( singleton @ SV11 ) @ SV41 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[276]) ).

thf(305,plain,
    ! [SV42: $i,SV12: $i] :
      ( ( ( ~ ( empty @ SV12 ) )
        = $false )
      | ( ( ~ ( empty @ ( set_union2 @ SV42 @ SV12 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[277]) ).

thf(306,plain,
    ! [SV61: $i,SV43: $i,SV13: $i] :
      ( ( ( ~ ~ ( ~ ( subset @ SV13 @ SV43 )
                | ~ ( subset @ SV61 @ SV43 ) ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[278]) ).

thf(307,plain,
    ! [SV62: $i,SV44: $i,SV14: $i] :
      ( ( ( ( singleton @ SV14 )
         != ( unordered_pair @ SV44 @ SV62 ) )
        = $true )
      | ( ( SV14 = SV44 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[279]) ).

thf(308,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ~ ( ( SV45
             != ( union @ SV15 ) )
            | ! [SY146: $i] :
                ~ ( ~ ( ~ ( in @ SY146 @ SV45 )
                      | ~ ! [SY102: $i] :
                            ~ ~ ( ~ ( in @ SY146 @ SY102 )
                                | ~ ( in @ SY102 @ SV15 ) ) )
                  | ~ ( ~ ~ ! [SY103: $i] :
                              ~ ~ ( ~ ( in @ SY146 @ SY103 )
                                  | ~ ( in @ SY103 @ SV15 ) )
                      | ( in @ SY146 @ SV45 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[280]) ).

thf(309,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ~ ( ~ ! [SY149: $i] :
                  ~ ( ~ ( ~ ( in @ SY149 @ SV45 )
                        | ~ ! [SY105: $i] :
                              ~ ~ ( ~ ( in @ SY149 @ SY105 )
                                  | ~ ( in @ SY105 @ SV15 ) ) )
                    | ~ ( ~ ~ ! [SY106: $i] :
                                ~ ~ ( ~ ( in @ SY149 @ SY106 )
                                    | ~ ( in @ SY106 @ SV15 ) )
                        | ( in @ SY149 @ SV45 ) ) )
            | ( SV45
              = ( union @ SV15 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[280]) ).

thf(310,plain,
    ! [SV46: $i,SV16: $i] :
      ( ( ( subset @ SV16 @ SV46 )
        = $false )
      | ( ( ( set_union2 @ SV16 @ SV46 )
          = SV46 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[281]) ).

thf(311,plain,
    ! [SV63: $i,SV47: $i,SV17: $i] :
      ( ( ( ( singleton @ SV17 )
         != ( unordered_pair @ SV47 @ SV63 ) )
        = $true )
      | ( ( SV47 = SV63 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[282]) ).

thf(312,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ~ ( ( SV64
             != ( set_intersection2 @ SV18 @ SV48 ) )
            | ! [SY168: $i] :
                ~ ( ~ ( ~ ( in @ SY168 @ SV64 )
                      | ~ ( ~ ( in @ SY168 @ SV18 )
                          | ~ ( in @ SY168 @ SV48 ) ) )
                  | ~ ( ~ ~ ( ~ ( in @ SY168 @ SV18 )
                            | ~ ( in @ SY168 @ SV48 ) )
                      | ( in @ SY168 @ SV64 ) ) ) )
        | ~ ( ~ ! [SY169: $i] :
                  ~ ( ~ ( ~ ( in @ SY169 @ SV64 )
                        | ~ ( ~ ( in @ SY169 @ SV18 )
                            | ~ ( in @ SY169 @ SV48 ) ) )
                    | ~ ( ~ ~ ( ~ ( in @ SY169 @ SV18 )
                              | ~ ( in @ SY169 @ SV48 ) )
                        | ( in @ SY169 @ SV64 ) ) )
            | ( SV64
              = ( set_intersection2 @ SV18 @ SV48 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[283]) ).

thf(313,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ~ ( ( SV65
             != ( set_difference @ SV19 @ SV49 ) )
            | ! [SY170: $i] :
                ~ ( ~ ( ~ ( in @ SY170 @ SV65 )
                      | ~ ( ~ ( in @ SY170 @ SV19 )
                          | ~ ~ ( in @ SY170 @ SV49 ) ) )
                  | ~ ( ~ ~ ( ~ ( in @ SY170 @ SV19 )
                            | ~ ~ ( in @ SY170 @ SV49 ) )
                      | ( in @ SY170 @ SV65 ) ) ) )
        | ~ ( ~ ! [SY171: $i] :
                  ~ ( ~ ( ~ ( in @ SY171 @ SV65 )
                        | ~ ( ~ ( in @ SY171 @ SV19 )
                            | ~ ~ ( in @ SY171 @ SV49 ) ) )
                    | ~ ( ~ ~ ( ~ ( in @ SY171 @ SV19 )
                              | ~ ~ ( in @ SY171 @ SV49 ) )
                        | ( in @ SY171 @ SV65 ) ) )
            | ( SV65
              = ( set_difference @ SV19 @ SV49 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[284]) ).

thf(314,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ~ ( ( SV66
             != ( set_union2 @ SV20 @ SV50 ) )
            | ! [SY172: $i] :
                ~ ( ~ ( ~ ( in @ SY172 @ SV66 )
                      | ( in @ SY172 @ SV20 )
                      | ( in @ SY172 @ SV50 ) )
                  | ~ ( ~ ( ( in @ SY172 @ SV20 )
                          | ( in @ SY172 @ SV50 ) )
                      | ( in @ SY172 @ SV66 ) ) ) )
        | ~ ( ~ ! [SY173: $i] :
                  ~ ( ~ ( ~ ( in @ SY173 @ SV66 )
                        | ( in @ SY173 @ SV20 )
                        | ( in @ SY173 @ SV50 ) )
                    | ~ ( ~ ( ( in @ SY173 @ SV20 )
                            | ( in @ SY173 @ SV50 ) )
                        | ( in @ SY173 @ SV66 ) ) )
            | ( SV66
              = ( set_union2 @ SV20 @ SV50 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[285]) ).

thf(315,plain,
    ! [SV51: $i,SV21: $i] :
      ( ( ( in @ SV21 @ SV51 )
        = $false )
      | ( ( ~ ( in @ SV51 @ SV21 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[286]) ).

thf(316,plain,
    ! [SV52: $i,SV22: $i] :
      ( ( ( ~ ( in @ SV22 @ SV52 ) )
        = $false )
      | ( ( disjoint @ ( singleton @ SV22 ) @ SV52 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[287]) ).

thf(317,plain,
    ! [SV53: $i,SV23: $i] :
      ( ( ( in @ SV23 @ SV53 )
        = $false )
      | ( ( ( set_union2 @ ( singleton @ SV23 ) @ SV53 )
          = SV53 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[288]) ).

thf(318,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ~ ( ( SV67
             != ( unordered_pair @ SV24 @ SV54 ) )
            | ! [SY174: $i] :
                ~ ( ~ ( ~ ( in @ SY174 @ SV67 )
                      | ( SY174 = SV24 )
                      | ( SY174 = SV54 ) )
                  | ~ ( ~ ( ( SY174 = SV24 )
                          | ( SY174 = SV54 ) )
                      | ( in @ SY174 @ SV67 ) ) ) )
        | ~ ( ~ ! [SY175: $i] :
                  ~ ( ~ ( ~ ( in @ SY175 @ SV67 )
                        | ( SY175 = SV24 )
                        | ( SY175 = SV54 ) )
                    | ~ ( ~ ( ( SY175 = SV24 )
                            | ( SY175 = SV54 ) )
                        | ( in @ SY175 @ SV67 ) ) )
            | ( SV67
              = ( unordered_pair @ SV24 @ SV54 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[289]) ).

thf(319,plain,
    ! [SV55: $i,SV25: $i] :
      ( ( ~ ( disjoint @ ( singleton @ SV25 ) @ SV55 )
        | ~ ( in @ SV25 @ SV55 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[290]) ).

thf(320,plain,
    ! [SV56: $i,SV26: $i] :
      ( ( ( ! [SY165: $i] :
              ~ ( ~ ( ~ ( in @ SY165 @ SV26 )
                    | ( in @ SY165 @ SV56 ) )
                | ~ ( ~ ( in @ SY165 @ SV56 )
                    | ( in @ SY165 @ SV26 ) ) ) )
        = $false )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[291]) ).

thf(321,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ~ ( ( SV57
             != ( singleton @ SV27 ) )
            | ! [SY166: $i] :
                ~ ( ~ ( ~ ( in @ SY166 @ SV57 )
                      | ( SY166 = SV27 ) )
                  | ~ ( ( SY166 != SV27 )
                      | ( in @ SY166 @ SV57 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[292]) ).

thf(322,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ~ ( ~ ! [SY167: $i] :
                  ~ ( ~ ( ~ ( in @ SY167 @ SV57 )
                        | ( SY167 = SV27 ) )
                    | ~ ( ( SY167 != SV27 )
                        | ( in @ SY167 @ SV57 ) ) )
            | ( SV57
              = ( singleton @ SV27 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[292]) ).

thf(323,plain,
    ! [SV28: $i] :
      ( ( ( SV28 != empty_set )
        | ! [SY135: $i] :
            ~ ( in @ SY135 @ SV28 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[293]) ).

thf(324,plain,
    ! [SV28: $i] :
      ( ( ~ ! [SY136: $i] :
              ~ ( in @ SY136 @ SV28 )
        | ( SV28 = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[294]) ).

thf(325,plain,
    ! [SV58: $i,SV29: $i] :
      ( ( ( subset @ ( singleton @ SV29 ) @ ( singleton @ SV58 ) )
        = $false )
      | ( ( SV29 = SV58 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[295]) ).

thf(326,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ~ ( ~ ( subset @ ( singleton @ SV31 ) @ SV59 )
            | ( in @ SV31 @ SV59 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[296]) ).

thf(327,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ~ ( ~ ( in @ SV31 @ SV59 )
            | ( subset @ ( singleton @ SV31 ) @ SV59 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[296]) ).

thf(328,plain,
    ! [SV60: $i,SV32: $i] :
      ( ( ~ ( in @ SV32 @ SV60 )
        | ~ ( empty @ SV60 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[297]) ).

thf(329,plain,
    ! [SV38: $i,SV8: $i] :
      ( ( ( empty @ SV8 )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV8 @ SV38 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[298]) ).

thf(330,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ( ~ ~ ( disjoint @ SV9 @ SV39 )
              | ~ ! [SY140: $i] :
                    ~ ~ ( ~ ( in @ SY140 @ SV9 )
                        | ~ ( in @ SY140 @ SV39 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[299]) ).

thf(331,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ( ~ ~ ! [SY141: $i] :
                      ~ ~ ( ~ ( in @ SY141 @ SV9 )
                          | ~ ( in @ SY141 @ SV39 ) )
              | ~ ( disjoint @ SV9 @ SV39 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[300]) ).

thf(332,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ~ ( subset @ SV10 @ SV40 )
        | ! [SY142: $i] :
            ( ~ ( in @ SY142 @ SV10 )
            | ( in @ SY142 @ SV40 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[301]) ).

thf(333,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ~ ! [SY143: $i] :
              ( ~ ( in @ SY143 @ SV10 )
              | ( in @ SY143 @ SV40 ) )
        | ( subset @ SV10 @ SV40 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[302]) ).

thf(334,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ~ ( subset @ ( singleton @ SV11 ) @ SV41 )
        | ( in @ SV11 @ SV41 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[303]) ).

thf(335,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ~ ( in @ SV11 @ SV41 )
        | ( subset @ ( singleton @ SV11 ) @ SV41 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[304]) ).

thf(336,plain,
    ! [SV42: $i,SV12: $i] :
      ( ( ( empty @ SV12 )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV42 @ SV12 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[305]) ).

thf(337,plain,
    ! [SV61: $i,SV43: $i,SV13: $i] :
      ( ( ( ~ ( ~ ( subset @ SV13 @ SV43 )
              | ~ ( subset @ SV61 @ SV43 ) ) )
        = $false )
      | ( ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[306]) ).

thf(338,plain,
    ! [SV62: $i,SV44: $i,SV14: $i] :
      ( ( ( ( singleton @ SV14 )
          = ( unordered_pair @ SV44 @ SV62 ) )
        = $false )
      | ( ( SV14 = SV44 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[307]) ).

thf(339,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( SV45
         != ( union @ SV15 ) )
        | ! [SY146: $i] :
            ~ ( ~ ( ~ ( in @ SY146 @ SV45 )
                  | ~ ! [SY102: $i] :
                        ~ ~ ( ~ ( in @ SY146 @ SY102 )
                            | ~ ( in @ SY102 @ SV15 ) ) )
              | ~ ( ~ ~ ! [SY103: $i] :
                          ~ ~ ( ~ ( in @ SY146 @ SY103 )
                              | ~ ( in @ SY103 @ SV15 ) )
                  | ( in @ SY146 @ SV45 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[308]) ).

thf(340,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ~ ! [SY149: $i] :
              ~ ( ~ ( ~ ( in @ SY149 @ SV45 )
                    | ~ ! [SY105: $i] :
                          ~ ~ ( ~ ( in @ SY149 @ SY105 )
                              | ~ ( in @ SY105 @ SV15 ) ) )
                | ~ ( ~ ~ ! [SY106: $i] :
                            ~ ~ ( ~ ( in @ SY149 @ SY106 )
                                | ~ ( in @ SY106 @ SV15 ) )
                    | ( in @ SY149 @ SV45 ) ) )
        | ( SV45
          = ( union @ SV15 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[309]) ).

thf(341,plain,
    ! [SV63: $i,SV47: $i,SV17: $i] :
      ( ( ( ( singleton @ SV17 )
          = ( unordered_pair @ SV47 @ SV63 ) )
        = $false )
      | ( ( SV47 = SV63 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[311]) ).

thf(342,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ~ ( ( SV64
             != ( set_intersection2 @ SV18 @ SV48 ) )
            | ! [SY168: $i] :
                ~ ( ~ ( ~ ( in @ SY168 @ SV64 )
                      | ~ ( ~ ( in @ SY168 @ SV18 )
                          | ~ ( in @ SY168 @ SV48 ) ) )
                  | ~ ( ~ ~ ( ~ ( in @ SY168 @ SV18 )
                            | ~ ( in @ SY168 @ SV48 ) )
                      | ( in @ SY168 @ SV64 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[312]) ).

thf(343,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ~ ( ~ ! [SY169: $i] :
                  ~ ( ~ ( ~ ( in @ SY169 @ SV64 )
                        | ~ ( ~ ( in @ SY169 @ SV18 )
                            | ~ ( in @ SY169 @ SV48 ) ) )
                    | ~ ( ~ ~ ( ~ ( in @ SY169 @ SV18 )
                              | ~ ( in @ SY169 @ SV48 ) )
                        | ( in @ SY169 @ SV64 ) ) )
            | ( SV64
              = ( set_intersection2 @ SV18 @ SV48 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[312]) ).

thf(344,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ~ ( ( SV65
             != ( set_difference @ SV19 @ SV49 ) )
            | ! [SY170: $i] :
                ~ ( ~ ( ~ ( in @ SY170 @ SV65 )
                      | ~ ( ~ ( in @ SY170 @ SV19 )
                          | ~ ~ ( in @ SY170 @ SV49 ) ) )
                  | ~ ( ~ ~ ( ~ ( in @ SY170 @ SV19 )
                            | ~ ~ ( in @ SY170 @ SV49 ) )
                      | ( in @ SY170 @ SV65 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[313]) ).

thf(345,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ~ ( ~ ! [SY171: $i] :
                  ~ ( ~ ( ~ ( in @ SY171 @ SV65 )
                        | ~ ( ~ ( in @ SY171 @ SV19 )
                            | ~ ~ ( in @ SY171 @ SV49 ) ) )
                    | ~ ( ~ ~ ( ~ ( in @ SY171 @ SV19 )
                              | ~ ~ ( in @ SY171 @ SV49 ) )
                        | ( in @ SY171 @ SV65 ) ) )
            | ( SV65
              = ( set_difference @ SV19 @ SV49 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[313]) ).

thf(346,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ~ ( ( SV66
             != ( set_union2 @ SV20 @ SV50 ) )
            | ! [SY172: $i] :
                ~ ( ~ ( ~ ( in @ SY172 @ SV66 )
                      | ( in @ SY172 @ SV20 )
                      | ( in @ SY172 @ SV50 ) )
                  | ~ ( ~ ( ( in @ SY172 @ SV20 )
                          | ( in @ SY172 @ SV50 ) )
                      | ( in @ SY172 @ SV66 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[314]) ).

thf(347,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ~ ( ~ ! [SY173: $i] :
                  ~ ( ~ ( ~ ( in @ SY173 @ SV66 )
                        | ( in @ SY173 @ SV20 )
                        | ( in @ SY173 @ SV50 ) )
                    | ~ ( ~ ( ( in @ SY173 @ SV20 )
                            | ( in @ SY173 @ SV50 ) )
                        | ( in @ SY173 @ SV66 ) ) )
            | ( SV66
              = ( set_union2 @ SV20 @ SV50 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[314]) ).

thf(348,plain,
    ! [SV21: $i,SV51: $i] :
      ( ( ( in @ SV51 @ SV21 )
        = $false )
      | ( ( in @ SV21 @ SV51 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[315]) ).

thf(349,plain,
    ! [SV52: $i,SV22: $i] :
      ( ( ( in @ SV22 @ SV52 )
        = $true )
      | ( ( disjoint @ ( singleton @ SV22 ) @ SV52 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[316]) ).

thf(350,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ~ ( ( SV67
             != ( unordered_pair @ SV24 @ SV54 ) )
            | ! [SY174: $i] :
                ~ ( ~ ( ~ ( in @ SY174 @ SV67 )
                      | ( SY174 = SV24 )
                      | ( SY174 = SV54 ) )
                  | ~ ( ~ ( ( SY174 = SV24 )
                          | ( SY174 = SV54 ) )
                      | ( in @ SY174 @ SV67 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[318]) ).

thf(351,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ~ ( ~ ! [SY175: $i] :
                  ~ ( ~ ( ~ ( in @ SY175 @ SV67 )
                        | ( SY175 = SV24 )
                        | ( SY175 = SV54 ) )
                    | ~ ( ~ ( ( SY175 = SV24 )
                            | ( SY175 = SV54 ) )
                        | ( in @ SY175 @ SV67 ) ) )
            | ( SV67
              = ( unordered_pair @ SV24 @ SV54 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[318]) ).

thf(352,plain,
    ! [SV55: $i,SV25: $i] :
      ( ( ( ~ ( disjoint @ ( singleton @ SV25 ) @ SV55 ) )
        = $true )
      | ( ( ~ ( in @ SV25 @ SV55 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[319]) ).

thf(353,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
                  | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 ) )
              | ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
                  | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) ) )
        = $false )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[320]) ).

thf(354,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ( SV57
         != ( singleton @ SV27 ) )
        | ! [SY166: $i] :
            ~ ( ~ ( ~ ( in @ SY166 @ SV57 )
                  | ( SY166 = SV27 ) )
              | ~ ( ( SY166 != SV27 )
                  | ( in @ SY166 @ SV57 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[321]) ).

thf(355,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ~ ! [SY167: $i] :
              ~ ( ~ ( ~ ( in @ SY167 @ SV57 )
                    | ( SY167 = SV27 ) )
                | ~ ( ( SY167 != SV27 )
                    | ( in @ SY167 @ SV57 ) ) )
        | ( SV57
          = ( singleton @ SV27 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[322]) ).

thf(356,plain,
    ! [SV28: $i] :
      ( ( ( SV28 != empty_set )
        = $true )
      | ( ( ! [SY135: $i] :
              ~ ( in @ SY135 @ SV28 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[323]) ).

thf(357,plain,
    ! [SV28: $i] :
      ( ( ( ~ ! [SY136: $i] :
                ~ ( in @ SY136 @ SV28 ) )
        = $true )
      | ( ( SV28 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[324]) ).

thf(358,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ~ ( subset @ ( singleton @ SV31 ) @ SV59 )
        | ( in @ SV31 @ SV59 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[326]) ).

thf(359,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ~ ( in @ SV31 @ SV59 )
        | ( subset @ ( singleton @ SV31 ) @ SV59 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[327]) ).

thf(360,plain,
    ! [SV60: $i,SV32: $i] :
      ( ( ( ~ ( in @ SV32 @ SV60 ) )
        = $true )
      | ( ( ~ ( empty @ SV60 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[328]) ).

thf(361,plain,
    ! [SV38: $i,SV8: $i] :
      ( ( ( empty @ ( set_union2 @ SV8 @ SV38 ) )
        = $false )
      | ( ( empty @ SV8 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[329]) ).

thf(362,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ( ~ ~ ( disjoint @ SV9 @ SV39 )
            | ~ ! [SY140: $i] :
                  ~ ~ ( ~ ( in @ SY140 @ SV9 )
                      | ~ ( in @ SY140 @ SV39 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[330]) ).

thf(363,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ( ~ ~ ! [SY141: $i] :
                    ~ ~ ( ~ ( in @ SY141 @ SV9 )
                        | ~ ( in @ SY141 @ SV39 ) )
            | ~ ( disjoint @ SV9 @ SV39 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[331]) ).

thf(364,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ( ~ ( subset @ SV10 @ SV40 ) )
        = $true )
      | ( ( ! [SY142: $i] :
              ( ~ ( in @ SY142 @ SV10 )
              | ( in @ SY142 @ SV40 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[332]) ).

thf(365,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ( ~ ! [SY143: $i] :
                ( ~ ( in @ SY143 @ SV10 )
                | ( in @ SY143 @ SV40 ) ) )
        = $true )
      | ( ( subset @ SV10 @ SV40 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[333]) ).

thf(366,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV11 ) @ SV41 ) )
        = $true )
      | ( ( in @ SV11 @ SV41 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[334]) ).

thf(367,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ( ~ ( in @ SV11 @ SV41 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV11 ) @ SV41 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[335]) ).

thf(368,plain,
    ! [SV12: $i,SV42: $i] :
      ( ( ( empty @ ( set_union2 @ SV42 @ SV12 ) )
        = $false )
      | ( ( empty @ SV12 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[336]) ).

thf(369,plain,
    ! [SV61: $i,SV43: $i,SV13: $i] :
      ( ( ( ~ ( subset @ SV13 @ SV43 )
          | ~ ( subset @ SV61 @ SV43 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[337]) ).

thf(370,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( SV45
         != ( union @ SV15 ) )
        = $true )
      | ( ( ! [SY146: $i] :
              ~ ( ~ ( ~ ( in @ SY146 @ SV45 )
                    | ~ ! [SY102: $i] :
                          ~ ~ ( ~ ( in @ SY146 @ SY102 )
                              | ~ ( in @ SY102 @ SV15 ) ) )
                | ~ ( ~ ~ ! [SY103: $i] :
                            ~ ~ ( ~ ( in @ SY146 @ SY103 )
                                | ~ ( in @ SY103 @ SV15 ) )
                    | ( in @ SY146 @ SV45 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[339]) ).

thf(371,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( ~ ! [SY149: $i] :
                ~ ( ~ ( ~ ( in @ SY149 @ SV45 )
                      | ~ ! [SY105: $i] :
                            ~ ~ ( ~ ( in @ SY149 @ SY105 )
                                | ~ ( in @ SY105 @ SV15 ) ) )
                  | ~ ( ~ ~ ! [SY106: $i] :
                              ~ ~ ( ~ ( in @ SY149 @ SY106 )
                                  | ~ ( in @ SY106 @ SV15 ) )
                      | ( in @ SY149 @ SV45 ) ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[340]) ).

thf(372,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ( SV64
         != ( set_intersection2 @ SV18 @ SV48 ) )
        | ! [SY168: $i] :
            ~ ( ~ ( ~ ( in @ SY168 @ SV64 )
                  | ~ ( ~ ( in @ SY168 @ SV18 )
                      | ~ ( in @ SY168 @ SV48 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SY168 @ SV18 )
                        | ~ ( in @ SY168 @ SV48 ) )
                  | ( in @ SY168 @ SV64 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[342]) ).

thf(373,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ~ ! [SY169: $i] :
              ~ ( ~ ( ~ ( in @ SY169 @ SV64 )
                    | ~ ( ~ ( in @ SY169 @ SV18 )
                        | ~ ( in @ SY169 @ SV48 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY169 @ SV18 )
                          | ~ ( in @ SY169 @ SV48 ) )
                    | ( in @ SY169 @ SV64 ) ) )
        | ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[343]) ).

thf(374,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ( SV65
         != ( set_difference @ SV19 @ SV49 ) )
        | ! [SY170: $i] :
            ~ ( ~ ( ~ ( in @ SY170 @ SV65 )
                  | ~ ( ~ ( in @ SY170 @ SV19 )
                      | ~ ~ ( in @ SY170 @ SV49 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SY170 @ SV19 )
                        | ~ ~ ( in @ SY170 @ SV49 ) )
                  | ( in @ SY170 @ SV65 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[344]) ).

thf(375,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ~ ! [SY171: $i] :
              ~ ( ~ ( ~ ( in @ SY171 @ SV65 )
                    | ~ ( ~ ( in @ SY171 @ SV19 )
                        | ~ ~ ( in @ SY171 @ SV49 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY171 @ SV19 )
                          | ~ ~ ( in @ SY171 @ SV49 ) )
                    | ( in @ SY171 @ SV65 ) ) )
        | ( SV65
          = ( set_difference @ SV19 @ SV49 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[345]) ).

thf(376,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ( SV66
         != ( set_union2 @ SV20 @ SV50 ) )
        | ! [SY172: $i] :
            ~ ( ~ ( ~ ( in @ SY172 @ SV66 )
                  | ( in @ SY172 @ SV20 )
                  | ( in @ SY172 @ SV50 ) )
              | ~ ( ~ ( ( in @ SY172 @ SV20 )
                      | ( in @ SY172 @ SV50 ) )
                  | ( in @ SY172 @ SV66 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[346]) ).

thf(377,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ~ ! [SY173: $i] :
              ~ ( ~ ( ~ ( in @ SY173 @ SV66 )
                    | ( in @ SY173 @ SV20 )
                    | ( in @ SY173 @ SV50 ) )
                | ~ ( ~ ( ( in @ SY173 @ SV20 )
                        | ( in @ SY173 @ SV50 ) )
                    | ( in @ SY173 @ SV66 ) ) )
        | ( SV66
          = ( set_union2 @ SV20 @ SV50 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[347]) ).

thf(378,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ( SV67
         != ( unordered_pair @ SV24 @ SV54 ) )
        | ! [SY174: $i] :
            ~ ( ~ ( ~ ( in @ SY174 @ SV67 )
                  | ( SY174 = SV24 )
                  | ( SY174 = SV54 ) )
              | ~ ( ~ ( ( SY174 = SV24 )
                      | ( SY174 = SV54 ) )
                  | ( in @ SY174 @ SV67 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[350]) ).

thf(379,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ~ ! [SY175: $i] :
              ~ ( ~ ( ~ ( in @ SY175 @ SV67 )
                    | ( SY175 = SV24 )
                    | ( SY175 = SV54 ) )
                | ~ ( ~ ( ( SY175 = SV24 )
                        | ( SY175 = SV54 ) )
                    | ( in @ SY175 @ SV67 ) ) )
        | ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[351]) ).

thf(380,plain,
    ! [SV55: $i,SV25: $i] :
      ( ( ( disjoint @ ( singleton @ SV25 ) @ SV55 )
        = $false )
      | ( ( ~ ( in @ SV25 @ SV55 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[352]) ).

thf(381,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 ) )
          | ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[353]) ).

thf(382,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ( SV57
         != ( singleton @ SV27 ) )
        = $true )
      | ( ( ! [SY166: $i] :
              ~ ( ~ ( ~ ( in @ SY166 @ SV57 )
                    | ( SY166 = SV27 ) )
                | ~ ( ( SY166 != SV27 )
                    | ( in @ SY166 @ SV57 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[354]) ).

thf(383,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ( ~ ! [SY167: $i] :
                ~ ( ~ ( ~ ( in @ SY167 @ SV57 )
                      | ( SY167 = SV27 ) )
                  | ~ ( ( SY167 != SV27 )
                      | ( in @ SY167 @ SV57 ) ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[355]) ).

thf(384,plain,
    ! [SV28: $i] :
      ( ( ( SV28 = empty_set )
        = $false )
      | ( ( ! [SY135: $i] :
              ~ ( in @ SY135 @ SV28 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[356]) ).

thf(385,plain,
    ! [SV28: $i] :
      ( ( ( ! [SY136: $i] :
              ~ ( in @ SY136 @ SV28 ) )
        = $false )
      | ( ( SV28 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[357]) ).

thf(386,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV31 ) @ SV59 ) )
        = $true )
      | ( ( in @ SV31 @ SV59 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[358]) ).

thf(387,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ( ~ ( in @ SV31 @ SV59 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV31 ) @ SV59 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[359]) ).

thf(388,plain,
    ! [SV60: $i,SV32: $i] :
      ( ( ( in @ SV32 @ SV60 )
        = $false )
      | ( ( ~ ( empty @ SV60 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[360]) ).

thf(389,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ( disjoint @ SV9 @ SV39 )
        | ~ ! [SY140: $i] :
              ~ ~ ( ~ ( in @ SY140 @ SV9 )
                  | ~ ( in @ SY140 @ SV39 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[362]) ).

thf(390,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ~ ~ ! [SY141: $i] :
                ~ ~ ( ~ ( in @ SY141 @ SV9 )
                    | ~ ( in @ SY141 @ SV39 ) )
        | ~ ( disjoint @ SV9 @ SV39 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[363]) ).

thf(391,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ( subset @ SV10 @ SV40 )
        = $false )
      | ( ( ! [SY142: $i] :
              ( ~ ( in @ SY142 @ SV10 )
              | ( in @ SY142 @ SV40 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[364]) ).

thf(392,plain,
    ! [SV40: $i,SV10: $i] :
      ( ( ( ! [SY143: $i] :
              ( ~ ( in @ SY143 @ SV10 )
              | ( in @ SY143 @ SV40 ) ) )
        = $false )
      | ( ( subset @ SV10 @ SV40 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[365]) ).

thf(393,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ( subset @ ( singleton @ SV11 ) @ SV41 )
        = $false )
      | ( ( in @ SV11 @ SV41 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[366]) ).

thf(394,plain,
    ! [SV41: $i,SV11: $i] :
      ( ( ( in @ SV11 @ SV41 )
        = $false )
      | ( ( subset @ ( singleton @ SV11 ) @ SV41 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[367]) ).

thf(395,plain,
    ! [SV61: $i,SV43: $i,SV13: $i] :
      ( ( ( ~ ( subset @ SV13 @ SV43 ) )
        = $true )
      | ( ( ~ ( subset @ SV61 @ SV43 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[369]) ).

thf(396,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( SV45
          = ( union @ SV15 ) )
        = $false )
      | ( ( ! [SY146: $i] :
              ~ ( ~ ( ~ ( in @ SY146 @ SV45 )
                    | ~ ! [SY102: $i] :
                          ~ ~ ( ~ ( in @ SY146 @ SY102 )
                              | ~ ( in @ SY102 @ SV15 ) ) )
                | ~ ( ~ ~ ! [SY103: $i] :
                            ~ ~ ( ~ ( in @ SY146 @ SY103 )
                                | ~ ( in @ SY103 @ SV15 ) )
                    | ( in @ SY146 @ SV45 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[370]) ).

thf(397,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( ! [SY149: $i] :
              ~ ( ~ ( ~ ( in @ SY149 @ SV45 )
                    | ~ ! [SY105: $i] :
                          ~ ~ ( ~ ( in @ SY149 @ SY105 )
                              | ~ ( in @ SY105 @ SV15 ) ) )
                | ~ ( ~ ~ ! [SY106: $i] :
                            ~ ~ ( ~ ( in @ SY149 @ SY106 )
                                | ~ ( in @ SY106 @ SV15 ) )
                    | ( in @ SY149 @ SV45 ) ) ) )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[371]) ).

thf(398,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ( SV64
         != ( set_intersection2 @ SV18 @ SV48 ) )
        = $true )
      | ( ( ! [SY168: $i] :
              ~ ( ~ ( ~ ( in @ SY168 @ SV64 )
                    | ~ ( ~ ( in @ SY168 @ SV18 )
                        | ~ ( in @ SY168 @ SV48 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY168 @ SV18 )
                          | ~ ( in @ SY168 @ SV48 ) )
                    | ( in @ SY168 @ SV64 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[372]) ).

thf(399,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ( ~ ! [SY169: $i] :
                ~ ( ~ ( ~ ( in @ SY169 @ SV64 )
                      | ~ ( ~ ( in @ SY169 @ SV18 )
                          | ~ ( in @ SY169 @ SV48 ) ) )
                  | ~ ( ~ ~ ( ~ ( in @ SY169 @ SV18 )
                            | ~ ( in @ SY169 @ SV48 ) )
                      | ( in @ SY169 @ SV64 ) ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[373]) ).

thf(400,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ( SV65
         != ( set_difference @ SV19 @ SV49 ) )
        = $true )
      | ( ( ! [SY170: $i] :
              ~ ( ~ ( ~ ( in @ SY170 @ SV65 )
                    | ~ ( ~ ( in @ SY170 @ SV19 )
                        | ~ ~ ( in @ SY170 @ SV49 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY170 @ SV19 )
                          | ~ ~ ( in @ SY170 @ SV49 ) )
                    | ( in @ SY170 @ SV65 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[374]) ).

thf(401,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ( ~ ! [SY171: $i] :
                ~ ( ~ ( ~ ( in @ SY171 @ SV65 )
                      | ~ ( ~ ( in @ SY171 @ SV19 )
                          | ~ ~ ( in @ SY171 @ SV49 ) ) )
                  | ~ ( ~ ~ ( ~ ( in @ SY171 @ SV19 )
                            | ~ ~ ( in @ SY171 @ SV49 ) )
                      | ( in @ SY171 @ SV65 ) ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[375]) ).

thf(402,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ( SV66
         != ( set_union2 @ SV20 @ SV50 ) )
        = $true )
      | ( ( ! [SY172: $i] :
              ~ ( ~ ( ~ ( in @ SY172 @ SV66 )
                    | ( in @ SY172 @ SV20 )
                    | ( in @ SY172 @ SV50 ) )
                | ~ ( ~ ( ( in @ SY172 @ SV20 )
                        | ( in @ SY172 @ SV50 ) )
                    | ( in @ SY172 @ SV66 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[376]) ).

thf(403,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ( ~ ! [SY173: $i] :
                ~ ( ~ ( ~ ( in @ SY173 @ SV66 )
                      | ( in @ SY173 @ SV20 )
                      | ( in @ SY173 @ SV50 ) )
                  | ~ ( ~ ( ( in @ SY173 @ SV20 )
                          | ( in @ SY173 @ SV50 ) )
                      | ( in @ SY173 @ SV66 ) ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[377]) ).

thf(404,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ( SV67
         != ( unordered_pair @ SV24 @ SV54 ) )
        = $true )
      | ( ( ! [SY174: $i] :
              ~ ( ~ ( ~ ( in @ SY174 @ SV67 )
                    | ( SY174 = SV24 )
                    | ( SY174 = SV54 ) )
                | ~ ( ~ ( ( SY174 = SV24 )
                        | ( SY174 = SV54 ) )
                    | ( in @ SY174 @ SV67 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[378]) ).

thf(405,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ( ~ ! [SY175: $i] :
                ~ ( ~ ( ~ ( in @ SY175 @ SV67 )
                      | ( SY175 = SV24 )
                      | ( SY175 = SV54 ) )
                  | ~ ( ~ ( ( SY175 = SV24 )
                          | ( SY175 = SV54 ) )
                      | ( in @ SY175 @ SV67 ) ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[379]) ).

thf(406,plain,
    ! [SV55: $i,SV25: $i] :
      ( ( ( in @ SV25 @ SV55 )
        = $false )
      | ( ( disjoint @ ( singleton @ SV25 ) @ SV55 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[380]) ).

thf(407,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 ) ) )
        = $true )
      | ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[381]) ).

thf(408,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ( SV57
          = ( singleton @ SV27 ) )
        = $false )
      | ( ( ! [SY166: $i] :
              ~ ( ~ ( ~ ( in @ SY166 @ SV57 )
                    | ( SY166 = SV27 ) )
                | ~ ( ( SY166 != SV27 )
                    | ( in @ SY166 @ SV57 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[382]) ).

thf(409,plain,
    ! [SV27: $i,SV57: $i] :
      ( ( ( ! [SY167: $i] :
              ~ ( ~ ( ~ ( in @ SY167 @ SV57 )
                    | ( SY167 = SV27 ) )
                | ~ ( ( SY167 != SV27 )
                    | ( in @ SY167 @ SV57 ) ) ) )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[383]) ).

thf(410,plain,
    ! [SV28: $i,SV68: $i] :
      ( ( ( ~ ( in @ SV68 @ SV28 ) )
        = $true )
      | ( ( SV28 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[384]) ).

thf(411,plain,
    ! [SV28: $i] :
      ( ( ( ~ ( in @ ( sK4_SY136 @ SV28 ) @ SV28 ) )
        = $false )
      | ( ( SV28 = empty_set )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[385]) ).

thf(412,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ( subset @ ( singleton @ SV31 ) @ SV59 )
        = $false )
      | ( ( in @ SV31 @ SV59 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[386]) ).

thf(413,plain,
    ! [SV59: $i,SV31: $i] :
      ( ( ( in @ SV31 @ SV59 )
        = $false )
      | ( ( subset @ ( singleton @ SV31 ) @ SV59 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[387]) ).

thf(414,plain,
    ! [SV32: $i,SV60: $i] :
      ( ( ( empty @ SV60 )
        = $false )
      | ( ( in @ SV32 @ SV60 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[388]) ).

thf(415,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( ~ ~ ( disjoint @ SV9 @ SV39 ) )
        = $true )
      | ( ( ~ ! [SY140: $i] :
                ~ ~ ( ~ ( in @ SY140 @ SV9 )
                    | ~ ( in @ SY140 @ SV39 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[389]) ).

thf(416,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( ~ ~ ! [SY141: $i] :
                  ~ ~ ( ~ ( in @ SY141 @ SV9 )
                      | ~ ( in @ SY141 @ SV39 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[390]) ).

thf(417,plain,
    ! [SV40: $i,SV10: $i,SV69: $i] :
      ( ( ( ~ ( in @ SV69 @ SV10 )
          | ( in @ SV69 @ SV40 ) )
        = $true )
      | ( ( subset @ SV10 @ SV40 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[391]) ).

thf(418,plain,
    ! [SV10: $i,SV40: $i] :
      ( ( ( ~ ( in @ ( sK5_SY143 @ SV40 @ SV10 ) @ SV10 )
          | ( in @ ( sK5_SY143 @ SV40 @ SV10 ) @ SV40 ) )
        = $false )
      | ( ( subset @ SV10 @ SV40 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[392]) ).

thf(419,plain,
    ! [SV61: $i,SV43: $i,SV13: $i] :
      ( ( ( subset @ SV13 @ SV43 )
        = $false )
      | ( ( ~ ( subset @ SV61 @ SV43 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[395]) ).

thf(420,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV70 @ SV45 )
                  | ~ ! [SY176: $i] :
                        ~ ~ ( ~ ( in @ SV70 @ SY176 )
                            | ~ ( in @ SY176 @ SV15 ) ) )
              | ~ ( ~ ~ ! [SY177: $i] :
                          ~ ~ ( ~ ( in @ SV70 @ SY177 )
                              | ~ ( in @ SY177 @ SV15 ) )
                  | ( in @ SV70 @ SV45 ) ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[396]) ).

thf(421,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
                  | ~ ! [SY178: $i] :
                        ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY178 )
                            | ~ ( in @ SY178 @ SV15 ) ) )
              | ~ ( ~ ~ ! [SY179: $i] :
                          ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                              | ~ ( in @ SY179 @ SV15 ) )
                  | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) ) )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[397]) ).

thf(422,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false )
      | ( ( ! [SY168: $i] :
              ~ ( ~ ( ~ ( in @ SY168 @ SV64 )
                    | ~ ( ~ ( in @ SY168 @ SV18 )
                        | ~ ( in @ SY168 @ SV48 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY168 @ SV18 )
                          | ~ ( in @ SY168 @ SV48 ) )
                    | ( in @ SY168 @ SV64 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[398]) ).

thf(423,plain,
    ! [SV48: $i,SV18: $i,SV64: $i] :
      ( ( ( ! [SY169: $i] :
              ~ ( ~ ( ~ ( in @ SY169 @ SV64 )
                    | ~ ( ~ ( in @ SY169 @ SV18 )
                        | ~ ( in @ SY169 @ SV48 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY169 @ SV18 )
                          | ~ ( in @ SY169 @ SV48 ) )
                    | ( in @ SY169 @ SV64 ) ) ) )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[399]) ).

thf(424,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false )
      | ( ( ! [SY170: $i] :
              ~ ( ~ ( ~ ( in @ SY170 @ SV65 )
                    | ~ ( ~ ( in @ SY170 @ SV19 )
                        | ~ ~ ( in @ SY170 @ SV49 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY170 @ SV19 )
                          | ~ ~ ( in @ SY170 @ SV49 ) )
                    | ( in @ SY170 @ SV65 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[400]) ).

thf(425,plain,
    ! [SV49: $i,SV19: $i,SV65: $i] :
      ( ( ( ! [SY171: $i] :
              ~ ( ~ ( ~ ( in @ SY171 @ SV65 )
                    | ~ ( ~ ( in @ SY171 @ SV19 )
                        | ~ ~ ( in @ SY171 @ SV49 ) ) )
                | ~ ( ~ ~ ( ~ ( in @ SY171 @ SV19 )
                          | ~ ~ ( in @ SY171 @ SV49 ) )
                    | ( in @ SY171 @ SV65 ) ) ) )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[401]) ).

thf(426,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false )
      | ( ( ! [SY172: $i] :
              ~ ( ~ ( ~ ( in @ SY172 @ SV66 )
                    | ( in @ SY172 @ SV20 )
                    | ( in @ SY172 @ SV50 ) )
                | ~ ( ~ ( ( in @ SY172 @ SV20 )
                        | ( in @ SY172 @ SV50 ) )
                    | ( in @ SY172 @ SV66 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[402]) ).

thf(427,plain,
    ! [SV50: $i,SV20: $i,SV66: $i] :
      ( ( ( ! [SY173: $i] :
              ~ ( ~ ( ~ ( in @ SY173 @ SV66 )
                    | ( in @ SY173 @ SV20 )
                    | ( in @ SY173 @ SV50 ) )
                | ~ ( ~ ( ( in @ SY173 @ SV20 )
                        | ( in @ SY173 @ SV50 ) )
                    | ( in @ SY173 @ SV66 ) ) ) )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[403]) ).

thf(428,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false )
      | ( ( ! [SY174: $i] :
              ~ ( ~ ( ~ ( in @ SY174 @ SV67 )
                    | ( SY174 = SV24 )
                    | ( SY174 = SV54 ) )
                | ~ ( ~ ( ( SY174 = SV24 )
                        | ( SY174 = SV54 ) )
                    | ( in @ SY174 @ SV67 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[404]) ).

thf(429,plain,
    ! [SV54: $i,SV24: $i,SV67: $i] :
      ( ( ( ! [SY175: $i] :
              ~ ( ~ ( ~ ( in @ SY175 @ SV67 )
                    | ( SY175 = SV24 )
                    | ( SY175 = SV54 ) )
                | ~ ( ~ ( ( SY175 = SV24 )
                        | ( SY175 = SV54 ) )
                    | ( in @ SY175 @ SV67 ) ) ) )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[405]) ).

thf(430,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
          | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 ) )
        = $false )
      | ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[407]) ).

thf(431,plain,
    ! [SV27: $i,SV57: $i,SV71: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV71 @ SV57 )
                  | ( SV71 = SV27 ) )
              | ~ ( ( SV71 != SV27 )
                  | ( in @ SV71 @ SV57 ) ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[408]) ).

thf(432,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
                  | ( ( sK7_SY167 @ SV27 @ SV57 )
                    = SV27 ) )
              | ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
                   != SV27 )
                  | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) ) )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[409]) ).

thf(433,plain,
    ! [SV28: $i,SV68: $i] :
      ( ( ( in @ SV68 @ SV28 )
        = $false )
      | ( ( SV28 = empty_set )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[410]) ).

thf(434,plain,
    ! [SV28: $i] :
      ( ( ( in @ ( sK4_SY136 @ SV28 ) @ SV28 )
        = $true )
      | ( ( SV28 = empty_set )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[411]) ).

thf(435,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $false )
      | ( ( ~ ! [SY140: $i] :
                ~ ~ ( ~ ( in @ SY140 @ SV9 )
                    | ~ ( in @ SY140 @ SV39 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[415]) ).

thf(436,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( ~ ! [SY141: $i] :
                ~ ~ ( ~ ( in @ SY141 @ SV9 )
                    | ~ ( in @ SY141 @ SV39 ) ) )
        = $false )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[416]) ).

thf(437,plain,
    ! [SV40: $i,SV10: $i,SV69: $i] :
      ( ( ( ~ ( in @ SV69 @ SV10 ) )
        = $true )
      | ( ( in @ SV69 @ SV40 )
        = $true )
      | ( ( subset @ SV10 @ SV40 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[417]) ).

thf(438,plain,
    ! [SV10: $i,SV40: $i] :
      ( ( ( ~ ( in @ ( sK5_SY143 @ SV40 @ SV10 ) @ SV10 ) )
        = $false )
      | ( ( subset @ SV10 @ SV40 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[418]) ).

thf(439,plain,
    ! [SV10: $i,SV40: $i] :
      ( ( ( in @ ( sK5_SY143 @ SV40 @ SV10 ) @ SV40 )
        = $false )
      | ( ( subset @ SV10 @ SV40 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[418]) ).

thf(440,plain,
    ! [SV13: $i,SV43: $i,SV61: $i] :
      ( ( ( subset @ SV61 @ SV43 )
        = $false )
      | ( ( subset @ SV13 @ SV43 )
        = $false )
      | ( ( subset @ ( set_union2 @ SV13 @ SV61 ) @ SV43 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[419]) ).

thf(441,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( ~ ( in @ SV70 @ SV45 )
              | ~ ! [SY176: $i] :
                    ~ ~ ( ~ ( in @ SV70 @ SY176 )
                        | ~ ( in @ SY176 @ SV15 ) ) )
          | ~ ( ~ ~ ! [SY177: $i] :
                      ~ ~ ( ~ ( in @ SV70 @ SY177 )
                          | ~ ( in @ SY177 @ SV15 ) )
              | ( in @ SV70 @ SV45 ) ) )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[420]) ).

thf(442,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
              | ~ ! [SY178: $i] :
                    ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY178 )
                        | ~ ( in @ SY178 @ SV15 ) ) )
          | ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[421]) ).

thf(443,plain,
    ! [SV48: $i,SV18: $i,SV64: $i,SV72: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV72 @ SV64 )
                  | ~ ( ~ ( in @ SV72 @ SV18 )
                      | ~ ( in @ SV72 @ SV48 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SV72 @ SV18 )
                        | ~ ( in @ SV72 @ SV48 ) )
                  | ( in @ SV72 @ SV64 ) ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[422]) ).

thf(444,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
                  | ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                      | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                        | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
                  | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) ) )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[423]) ).

thf(445,plain,
    ! [SV49: $i,SV19: $i,SV65: $i,SV73: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV73 @ SV65 )
                  | ~ ( ~ ( in @ SV73 @ SV19 )
                      | ~ ~ ( in @ SV73 @ SV49 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SV73 @ SV19 )
                        | ~ ~ ( in @ SV73 @ SV49 ) )
                  | ( in @ SV73 @ SV65 ) ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[424]) ).

thf(446,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
                  | ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                      | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                        | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
                  | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) ) )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[425]) ).

thf(447,plain,
    ! [SV50: $i,SV20: $i,SV66: $i,SV74: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV74 @ SV66 )
                  | ( in @ SV74 @ SV20 )
                  | ( in @ SV74 @ SV50 ) )
              | ~ ( ~ ( ( in @ SV74 @ SV20 )
                      | ( in @ SV74 @ SV50 ) )
                  | ( in @ SV74 @ SV66 ) ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[426]) ).

thf(448,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                      | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) ) )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[427]) ).

thf(449,plain,
    ! [SV54: $i,SV24: $i,SV67: $i,SV75: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV75 @ SV67 )
                  | ( SV75 = SV24 )
                  | ( SV75 = SV54 ) )
              | ~ ( ~ ( ( SV75 = SV24 )
                      | ( SV75 = SV54 ) )
                  | ( in @ SV75 @ SV67 ) ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[428]) ).

thf(450,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                        = SV24 )
                      | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                        = SV54 ) )
                  | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) ) )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[429]) ).

thf(451,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) )
        = $false )
      | ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[430]) ).

thf(452,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $false )
      | ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[430]) ).

thf(453,plain,
    ! [SV27: $i,SV57: $i,SV71: $i] :
      ( ( ( ~ ( ~ ( in @ SV71 @ SV57 )
              | ( SV71 = SV27 ) )
          | ~ ( ( SV71 != SV27 )
              | ( in @ SV71 @ SV57 ) ) )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[431]) ).

thf(454,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
              | ( ( sK7_SY167 @ SV27 @ SV57 )
                = SV27 ) )
          | ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
               != SV27 )
              | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[432]) ).

thf(455,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( disjoint @ SV9 @ SV39 )
        = $true )
      | ( ( ~ ! [SY140: $i] :
                ~ ~ ( ~ ( in @ SY140 @ SV9 )
                    | ~ ( in @ SY140 @ SV39 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[435]) ).

thf(456,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( ! [SY141: $i] :
              ~ ~ ( ~ ( in @ SY141 @ SV9 )
                  | ~ ( in @ SY141 @ SV39 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[436]) ).

thf(457,plain,
    ! [SV40: $i,SV10: $i,SV69: $i] :
      ( ( ( in @ SV69 @ SV10 )
        = $false )
      | ( ( in @ SV69 @ SV40 )
        = $true )
      | ( ( subset @ SV10 @ SV40 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[437]) ).

thf(458,plain,
    ! [SV10: $i,SV40: $i] :
      ( ( ( in @ ( sK5_SY143 @ SV40 @ SV10 ) @ SV10 )
        = $true )
      | ( ( subset @ SV10 @ SV40 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[438]) ).

thf(459,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( ~ ( in @ SV70 @ SV45 )
              | ~ ! [SY176: $i] :
                    ~ ~ ( ~ ( in @ SV70 @ SY176 )
                        | ~ ( in @ SY176 @ SV15 ) ) ) )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[441]) ).

thf(460,plain,
    ! [SV45: $i,SV15: $i,SV70: $i] :
      ( ( ( ~ ( ~ ~ ! [SY177: $i] :
                      ~ ~ ( ~ ( in @ SV70 @ SY177 )
                          | ~ ( in @ SY177 @ SV15 ) )
              | ( in @ SV70 @ SV45 ) ) )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[441]) ).

thf(461,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
              | ~ ! [SY178: $i] :
                    ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY178 )
                        | ~ ( in @ SY178 @ SV15 ) ) ) )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[442]) ).

thf(462,plain,
    ! [SV48: $i,SV18: $i,SV64: $i,SV72: $i] :
      ( ( ( ~ ( ~ ( in @ SV72 @ SV64 )
              | ~ ( ~ ( in @ SV72 @ SV18 )
                  | ~ ( in @ SV72 @ SV48 ) ) )
          | ~ ( ~ ~ ( ~ ( in @ SV72 @ SV18 )
                    | ~ ( in @ SV72 @ SV48 ) )
              | ( in @ SV72 @ SV64 ) ) )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[443]) ).

thf(463,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
              | ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                  | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
          | ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[444]) ).

thf(464,plain,
    ! [SV49: $i,SV19: $i,SV65: $i,SV73: $i] :
      ( ( ( ~ ( ~ ( in @ SV73 @ SV65 )
              | ~ ( ~ ( in @ SV73 @ SV19 )
                  | ~ ~ ( in @ SV73 @ SV49 ) ) )
          | ~ ( ~ ~ ( ~ ( in @ SV73 @ SV19 )
                    | ~ ~ ( in @ SV73 @ SV49 ) )
              | ( in @ SV73 @ SV65 ) ) )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[445]) ).

thf(465,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
              | ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                  | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
          | ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[446]) ).

thf(466,plain,
    ! [SV50: $i,SV20: $i,SV66: $i,SV74: $i] :
      ( ( ( ~ ( ~ ( in @ SV74 @ SV66 )
              | ( in @ SV74 @ SV20 )
              | ( in @ SV74 @ SV50 ) )
          | ~ ( ~ ( ( in @ SV74 @ SV20 )
                  | ( in @ SV74 @ SV50 ) )
              | ( in @ SV74 @ SV66 ) ) )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[447]) ).

thf(467,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
          | ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[448]) ).

thf(468,plain,
    ! [SV54: $i,SV24: $i,SV67: $i,SV75: $i] :
      ( ( ( ~ ( ~ ( in @ SV75 @ SV67 )
              | ( SV75 = SV24 )
              | ( SV75 = SV54 ) )
          | ~ ( ~ ( ( SV75 = SV24 )
                  | ( SV75 = SV54 ) )
              | ( in @ SV75 @ SV67 ) ) )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[449]) ).

thf(469,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) )
          | ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[450]) ).

thf(470,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $true )
      | ( ( ~ ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
              | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) ) )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[451]) ).

thf(471,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
          | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) )
        = $false )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $false )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[452]) ).

thf(472,plain,
    ! [SV27: $i,SV57: $i,SV71: $i] :
      ( ( ( ~ ( ~ ( in @ SV71 @ SV57 )
              | ( SV71 = SV27 ) ) )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[453]) ).

thf(473,plain,
    ! [SV57: $i,SV27: $i,SV71: $i] :
      ( ( ( ~ ( ( SV71 != SV27 )
              | ( in @ SV71 @ SV57 ) ) )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[453]) ).

thf(474,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
              | ( ( sK7_SY167 @ SV27 @ SV57 )
                = SV27 ) ) )
        = $true )
      | ( ( ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
               != SV27 )
              | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[454]) ).

thf(475,plain,
    ! [SV39: $i,SV9: $i] :
      ( ( ( ! [SY140: $i] :
              ~ ~ ( ~ ( in @ SY140 @ SV9 )
                  | ~ ( in @ SY140 @ SV39 ) ) )
        = $false )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[455]) ).

thf(476,plain,
    ! [SV39: $i,SV9: $i,SV76: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV76 @ SV9 )
                | ~ ( in @ SV76 @ SV39 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[456]) ).

thf(477,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ SV45 )
          | ~ ! [SY176: $i] :
                ~ ~ ( ~ ( in @ SV70 @ SY176 )
                    | ~ ( in @ SY176 @ SV15 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[459]) ).

thf(478,plain,
    ! [SV45: $i,SV15: $i,SV70: $i] :
      ( ( ( ~ ~ ! [SY177: $i] :
                  ~ ~ ( ~ ( in @ SV70 @ SY177 )
                      | ~ ( in @ SY177 @ SV15 ) )
          | ( in @ SV70 @ SV45 ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[460]) ).

thf(479,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
          | ~ ! [SY178: $i] :
                ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY178 )
                    | ~ ( in @ SY178 @ SV15 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[461]) ).

thf(480,plain,
    ! [SV48: $i,SV18: $i,SV64: $i,SV72: $i] :
      ( ( ( ~ ( ~ ( in @ SV72 @ SV64 )
              | ~ ( ~ ( in @ SV72 @ SV18 )
                  | ~ ( in @ SV72 @ SV48 ) ) ) )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[462]) ).

thf(481,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( in @ SV72 @ SV18 )
                    | ~ ( in @ SV72 @ SV48 ) )
              | ( in @ SV72 @ SV64 ) ) )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[462]) ).

thf(482,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
              | ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                  | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[463]) ).

thf(483,plain,
    ! [SV49: $i,SV19: $i,SV65: $i,SV73: $i] :
      ( ( ( ~ ( ~ ( in @ SV73 @ SV65 )
              | ~ ( ~ ( in @ SV73 @ SV19 )
                  | ~ ~ ( in @ SV73 @ SV49 ) ) ) )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[464]) ).

thf(484,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( in @ SV73 @ SV19 )
                    | ~ ~ ( in @ SV73 @ SV49 ) )
              | ( in @ SV73 @ SV65 ) ) )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[464]) ).

thf(485,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
              | ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                  | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[465]) ).

thf(486,plain,
    ! [SV50: $i,SV20: $i,SV66: $i,SV74: $i] :
      ( ( ( ~ ( ~ ( in @ SV74 @ SV66 )
              | ( in @ SV74 @ SV20 )
              | ( in @ SV74 @ SV50 ) ) )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[466]) ).

thf(487,plain,
    ! [SV66: $i,SV50: $i,SV20: $i,SV74: $i] :
      ( ( ( ~ ( ~ ( ( in @ SV74 @ SV20 )
                  | ( in @ SV74 @ SV50 ) )
              | ( in @ SV74 @ SV66 ) ) )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[466]) ).

thf(488,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) ) )
        = $true )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[467]) ).

thf(489,plain,
    ! [SV54: $i,SV24: $i,SV67: $i,SV75: $i] :
      ( ( ( ~ ( ~ ( in @ SV75 @ SV67 )
              | ( SV75 = SV24 )
              | ( SV75 = SV54 ) ) )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[468]) ).

thf(490,plain,
    ! [SV67: $i,SV54: $i,SV24: $i,SV75: $i] :
      ( ( ( ~ ( ~ ( ( SV75 = SV24 )
                  | ( SV75 = SV54 ) )
              | ( in @ SV75 @ SV67 ) ) )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[468]) ).

thf(491,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) ) )
        = $true )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[469]) ).

thf(492,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
          | ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 ) )
        = $false )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[470]) ).

thf(493,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 ) )
        = $false )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $false )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[471]) ).

thf(494,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $false )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $false )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[471]) ).

thf(495,plain,
    ! [SV27: $i,SV57: $i,SV71: $i] :
      ( ( ( ~ ( in @ SV71 @ SV57 )
          | ( SV71 = SV27 ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[472]) ).

thf(496,plain,
    ! [SV57: $i,SV27: $i,SV71: $i] :
      ( ( ( ( SV71 != SV27 )
          | ( in @ SV71 @ SV57 ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[473]) ).

thf(497,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ~ ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
          | ( ( sK7_SY167 @ SV27 @ SV57 )
            = SV27 ) )
        = $false )
      | ( ( ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
               != SV27 )
              | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[474]) ).

thf(498,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV9 )
                | ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV39 ) ) )
        = $false )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[475]) ).

thf(499,plain,
    ! [SV39: $i,SV9: $i,SV76: $i] :
      ( ( ( ~ ( ~ ( in @ SV76 @ SV9 )
              | ~ ( in @ SV76 @ SV39 ) ) )
        = $false )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[476]) ).

thf(500,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ SV45 ) )
        = $true )
      | ( ( ~ ! [SY176: $i] :
                ~ ~ ( ~ ( in @ SV70 @ SY176 )
                    | ~ ( in @ SY176 @ SV15 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[477]) ).

thf(501,plain,
    ! [SV45: $i,SV15: $i,SV70: $i] :
      ( ( ( ~ ~ ! [SY177: $i] :
                  ~ ~ ( ~ ( in @ SV70 @ SY177 )
                      | ~ ( in @ SY177 @ SV15 ) ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[478]) ).

thf(502,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) )
        = $false )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[479]) ).

thf(503,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ! [SY178: $i] :
                ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY178 )
                    | ~ ( in @ SY178 @ SV15 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[479]) ).

thf(504,plain,
    ! [SV48: $i,SV18: $i,SV64: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV64 )
          | ~ ( ~ ( in @ SV72 @ SV18 )
              | ~ ( in @ SV72 @ SV48 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[480]) ).

thf(505,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV72 @ SV18 )
                | ~ ( in @ SV72 @ SV48 ) )
          | ( in @ SV72 @ SV64 ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[481]) ).

thf(506,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
          | ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
              | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[482]) ).

thf(507,plain,
    ! [SV49: $i,SV19: $i,SV65: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV65 )
          | ~ ( ~ ( in @ SV73 @ SV19 )
              | ~ ~ ( in @ SV73 @ SV49 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[483]) ).

thf(508,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV73 @ SV19 )
                | ~ ~ ( in @ SV73 @ SV49 ) )
          | ( in @ SV73 @ SV65 ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[484]) ).

thf(509,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
          | ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
              | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[485]) ).

thf(510,plain,
    ! [SV50: $i,SV20: $i,SV66: $i,SV74: $i] :
      ( ( ( ~ ( in @ SV74 @ SV66 )
          | ( in @ SV74 @ SV20 )
          | ( in @ SV74 @ SV50 ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[486]) ).

thf(511,plain,
    ! [SV66: $i,SV50: $i,SV20: $i,SV74: $i] :
      ( ( ( ~ ( ( in @ SV74 @ SV20 )
              | ( in @ SV74 @ SV50 ) )
          | ( in @ SV74 @ SV66 ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[487]) ).

thf(512,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[488]) ).

thf(513,plain,
    ! [SV54: $i,SV24: $i,SV67: $i,SV75: $i] :
      ( ( ( ~ ( in @ SV75 @ SV67 )
          | ( SV75 = SV24 )
          | ( SV75 = SV54 ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[489]) ).

thf(514,plain,
    ! [SV67: $i,SV54: $i,SV24: $i,SV75: $i] :
      ( ( ( ~ ( ( SV75 = SV24 )
              | ( SV75 = SV54 ) )
          | ( in @ SV75 @ SV67 ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[490]) ).

thf(515,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
          | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV24 )
          | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV54 ) )
        = $false )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[491]) ).

thf(516,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( ~ ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 ) )
        = $false )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[492]) ).

thf(517,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $false )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[492]) ).

thf(518,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $true )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $false )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[493]) ).

thf(519,plain,
    ! [SV27: $i,SV57: $i,SV71: $i] :
      ( ( ( ~ ( in @ SV71 @ SV57 ) )
        = $true )
      | ( ( SV71 = SV27 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[495]) ).

thf(520,plain,
    ! [SV57: $i,SV27: $i,SV71: $i] :
      ( ( ( SV71 != SV27 )
        = $true )
      | ( ( in @ SV71 @ SV57 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[496]) ).

thf(521,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ~ ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) )
        = $false )
      | ( ( ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
               != SV27 )
              | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[497]) ).

thf(522,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $false )
      | ( ( ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
               != SV27 )
              | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[497]) ).

thf(523,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV9 )
              | ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV39 ) ) )
        = $true )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[498]) ).

thf(524,plain,
    ! [SV39: $i,SV9: $i,SV76: $i] :
      ( ( ( ~ ( in @ SV76 @ SV9 )
          | ~ ( in @ SV76 @ SV39 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[499]) ).

thf(525,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( ~ ! [SY176: $i] :
                ~ ~ ( ~ ( in @ SV70 @ SY176 )
                    | ~ ( in @ SY176 @ SV15 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[500]) ).

thf(526,plain,
    ! [SV45: $i,SV15: $i,SV70: $i] :
      ( ( ( ~ ! [SY177: $i] :
                ~ ~ ( ~ ( in @ SV70 @ SY177 )
                    | ~ ( in @ SY177 @ SV15 ) ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[501]) ).

thf(527,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[502]) ).

thf(528,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ! [SY178: $i] :
              ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY178 )
                  | ~ ( in @ SY178 @ SV15 ) ) )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[503]) ).

thf(529,plain,
    ! [SV48: $i,SV18: $i,SV64: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV64 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV72 @ SV18 )
              | ~ ( in @ SV72 @ SV48 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[504]) ).

thf(530,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV72 @ SV18 )
                | ~ ( in @ SV72 @ SV48 ) ) )
        = $true )
      | ( ( in @ SV72 @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[505]) ).

thf(531,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[506]) ).

thf(532,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
              | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[506]) ).

thf(533,plain,
    ! [SV49: $i,SV19: $i,SV65: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV65 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV73 @ SV19 )
              | ~ ~ ( in @ SV73 @ SV49 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[507]) ).

thf(534,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV73 @ SV19 )
                | ~ ~ ( in @ SV73 @ SV49 ) ) )
        = $true )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[508]) ).

thf(535,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[509]) ).

thf(536,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
              | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[509]) ).

thf(537,plain,
    ! [SV50: $i,SV20: $i,SV66: $i,SV74: $i] :
      ( ( ( ~ ( in @ SV74 @ SV66 ) )
        = $true )
      | ( ( ( in @ SV74 @ SV20 )
          | ( in @ SV74 @ SV50 ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[510]) ).

thf(538,plain,
    ! [SV66: $i,SV50: $i,SV20: $i,SV74: $i] :
      ( ( ( ~ ( ( in @ SV74 @ SV20 )
              | ( in @ SV74 @ SV50 ) ) )
        = $true )
      | ( ( in @ SV74 @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[511]) ).

thf(539,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[512]) ).

thf(540,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[512]) ).

thf(541,plain,
    ! [SV54: $i,SV24: $i,SV67: $i,SV75: $i] :
      ( ( ( ~ ( in @ SV75 @ SV67 ) )
        = $true )
      | ( ( ( SV75 = SV24 )
          | ( SV75 = SV54 ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[513]) ).

thf(542,plain,
    ! [SV67: $i,SV54: $i,SV24: $i,SV75: $i] :
      ( ( ( ~ ( ( SV75 = SV24 )
              | ( SV75 = SV54 ) ) )
        = $true )
      | ( ( in @ SV75 @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[514]) ).

thf(543,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) )
        = $false )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[515]) ).

thf(544,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV24 )
          | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV54 ) )
        = $false )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[515]) ).

thf(545,plain,
    ! [SV26: $i,SV56: $i] :
      ( ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV56 )
        = $true )
      | ( ( in @ ( sK3_SY165 @ SV56 @ SV26 ) @ SV26 )
        = $true )
      | ( ( SV26 = SV56 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[516]) ).

thf(546,plain,
    ! [SV27: $i,SV57: $i,SV71: $i] :
      ( ( ( in @ SV71 @ SV57 )
        = $false )
      | ( ( SV71 = SV27 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[519]) ).

thf(547,plain,
    ! [SV57: $i,SV27: $i,SV71: $i] :
      ( ( ( SV71 = SV27 )
        = $false )
      | ( ( in @ SV71 @ SV57 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[520]) ).

thf(548,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $true )
      | ( ( ~ ( ( ( sK7_SY167 @ SV27 @ SV57 )
               != SV27 )
              | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) ) )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[521]) ).

thf(549,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
           != SV27 )
          | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) )
        = $false )
      | ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[522]) ).

thf(550,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV9 )
          | ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV39 ) )
        = $false )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[523]) ).

thf(551,plain,
    ! [SV39: $i,SV9: $i,SV76: $i] :
      ( ( ( ~ ( in @ SV76 @ SV9 ) )
        = $true )
      | ( ( ~ ( in @ SV76 @ SV39 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[524]) ).

thf(552,plain,
    ! [SV45: $i,SV15: $i,SV70: $i] :
      ( ( ( ! [SY176: $i] :
              ~ ~ ( ~ ( in @ SV70 @ SY176 )
                  | ~ ( in @ SY176 @ SV15 ) ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[525]) ).

thf(553,plain,
    ! [SV45: $i,SV15: $i,SV70: $i] :
      ( ( ( ! [SY177: $i] :
              ~ ~ ( ~ ( in @ SV70 @ SY177 )
                  | ~ ( in @ SY177 @ SV15 ) ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[526]) ).

thf(554,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ! [SY179: $i] :
                  ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                      | ~ ( in @ SY179 @ SV15 ) )
          | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[527]) ).

thf(555,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
                | ~ ( in @ SV77 @ SV15 ) ) )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[528]) ).

thf(556,plain,
    ! [SV48: $i,SV18: $i,SV64: $i,SV72: $i] :
      ( ( ( in @ SV72 @ SV64 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV72 @ SV18 )
              | ~ ( in @ SV72 @ SV48 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[529]) ).

thf(557,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ( ~ ( in @ SV72 @ SV18 )
              | ~ ( in @ SV72 @ SV48 ) ) )
        = $false )
      | ( ( in @ SV72 @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[530]) ).

thf(558,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[531]) ).

thf(559,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
          | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[532]) ).

thf(560,plain,
    ! [SV49: $i,SV19: $i,SV65: $i,SV73: $i] :
      ( ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV73 @ SV19 )
              | ~ ~ ( in @ SV73 @ SV49 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[533]) ).

thf(561,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ( ~ ( in @ SV73 @ SV19 )
              | ~ ~ ( in @ SV73 @ SV49 ) ) )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[534]) ).

thf(562,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[535]) ).

thf(563,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
          | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[536]) ).

thf(564,plain,
    ! [SV50: $i,SV20: $i,SV66: $i,SV74: $i] :
      ( ( ( in @ SV74 @ SV66 )
        = $false )
      | ( ( ( in @ SV74 @ SV20 )
          | ( in @ SV74 @ SV50 ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[537]) ).

thf(565,plain,
    ! [SV66: $i,SV50: $i,SV20: $i,SV74: $i] :
      ( ( ( ( in @ SV74 @ SV20 )
          | ( in @ SV74 @ SV50 ) )
        = $false )
      | ( ( in @ SV74 @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[538]) ).

thf(566,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $true )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[539]) ).

thf(567,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[540]) ).

thf(568,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
                  | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) ) )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[540]) ).

thf(569,plain,
    ! [SV54: $i,SV24: $i,SV67: $i,SV75: $i] :
      ( ( ( in @ SV75 @ SV67 )
        = $false )
      | ( ( ( SV75 = SV24 )
          | ( SV75 = SV54 ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[541]) ).

thf(570,plain,
    ! [SV67: $i,SV54: $i,SV24: $i,SV75: $i] :
      ( ( ( ( SV75 = SV24 )
          | ( SV75 = SV54 ) )
        = $false )
      | ( ( in @ SV75 @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[542]) ).

thf(571,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $true )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[543]) ).

thf(572,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $false )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[544]) ).

thf(573,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $false )
      | ( ( ~ ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV24 )
                  | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                    = SV54 ) )
              | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) ) )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[544]) ).

thf(574,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
           != SV27 )
          | ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 ) )
        = $false )
      | ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[548]) ).

thf(575,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
         != SV27 )
        = $false )
      | ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[549]) ).

thf(576,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $false )
      | ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[549]) ).

thf(577,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV9 ) )
        = $false )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[550]) ).

thf(578,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( ~ ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV39 ) )
        = $false )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[550]) ).

thf(579,plain,
    ! [SV39: $i,SV9: $i,SV76: $i] :
      ( ( ( in @ SV76 @ SV9 )
        = $false )
      | ( ( ~ ( in @ SV76 @ SV39 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[551]) ).

thf(580,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV70 @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) )
                | ~ ( in @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) @ SV15 ) ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_forall_neg,[status(esa)],[552]) ).

thf(581,plain,
    ! [SV45: $i,SV15: $i,SV78: $i,SV70: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV70 @ SV78 )
                | ~ ( in @ SV78 @ SV15 ) ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[553]) ).

thf(582,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ! [SY179: $i] :
                  ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                      | ~ ( in @ SY179 @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[554]) ).

thf(583,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[554]) ).

thf(584,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
              | ~ ( in @ SV77 @ SV15 ) ) )
        = $false )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[555]) ).

thf(585,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV18 )
          | ~ ( in @ SV72 @ SV48 ) )
        = $false )
      | ( ( in @ SV72 @ SV64 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[556]) ).

thf(586,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV18 )
          | ~ ( in @ SV72 @ SV48 ) )
        = $true )
      | ( ( in @ SV72 @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[557]) ).

thf(587,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
          | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[558]) ).

thf(588,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[559]) ).

thf(589,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV19 )
          | ~ ~ ( in @ SV73 @ SV49 ) )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[560]) ).

thf(590,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV19 )
          | ~ ~ ( in @ SV73 @ SV49 ) )
        = $true )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[561]) ).

thf(591,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
          | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[562]) ).

thf(592,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 ) )
        = $true )
      | ( ( ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[563]) ).

thf(593,plain,
    ! [SV66: $i,SV50: $i,SV20: $i,SV74: $i] :
      ( ( ( in @ SV74 @ SV20 )
        = $true )
      | ( ( in @ SV74 @ SV50 )
        = $true )
      | ( ( in @ SV74 @ SV66 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[564]) ).

thf(594,plain,
    ! [SV50: $i,SV66: $i,SV20: $i,SV74: $i] :
      ( ( ( in @ SV74 @ SV20 )
        = $false )
      | ( ( in @ SV74 @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[565]) ).

thf(595,plain,
    ! [SV20: $i,SV66: $i,SV50: $i,SV74: $i] :
      ( ( ( in @ SV74 @ SV50 )
        = $false )
      | ( ( in @ SV74 @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[565]) ).

thf(596,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[566]) ).

thf(597,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[567]) ).

thf(598,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 ) )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[568]) ).

thf(599,plain,
    ! [SV67: $i,SV54: $i,SV24: $i,SV75: $i] :
      ( ( ( SV75 = SV24 )
        = $true )
      | ( ( SV75 = SV54 )
        = $true )
      | ( ( in @ SV75 @ SV67 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[569]) ).

thf(600,plain,
    ! [SV54: $i,SV67: $i,SV24: $i,SV75: $i] :
      ( ( ( SV75 = SV24 )
        = $false )
      | ( ( in @ SV75 @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[570]) ).

thf(601,plain,
    ! [SV24: $i,SV67: $i,SV54: $i,SV75: $i] :
      ( ( ( SV75 = SV54 )
        = $false )
      | ( ( in @ SV75 @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[570]) ).

thf(602,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) )
          | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) )
        = $false )
      | ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[571]) ).

thf(603,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) )
          | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) )
        = $false )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[572]) ).

thf(604,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) )
          | ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 ) )
        = $false )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[573]) ).

thf(605,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
         != SV27 )
        = $false )
      | ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[574]) ).

thf(606,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $false )
      | ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[574]) ).

thf(607,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $true )
      | ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $false )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[575]) ).

thf(608,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV9 )
        = $true )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[577]) ).

thf(609,plain,
    ! [SV9: $i,SV39: $i] :
      ( ( ( in @ ( sK12_SY140 @ SV39 @ SV9 ) @ SV39 )
        = $true )
      | ( ( disjoint @ SV9 @ SV39 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[578]) ).

thf(610,plain,
    ! [SV9: $i,SV39: $i,SV76: $i] :
      ( ( ( in @ SV76 @ SV39 )
        = $false )
      | ( ( in @ SV76 @ SV9 )
        = $false )
      | ( ( ~ ( disjoint @ SV9 @ SV39 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[579]) ).

thf(611,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( ~ ( in @ SV70 @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) )
              | ~ ( in @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) @ SV15 ) ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[580]) ).

thf(612,plain,
    ! [SV45: $i,SV15: $i,SV78: $i,SV70: $i] :
      ( ( ( ~ ( ~ ( in @ SV70 @ SV78 )
              | ~ ( in @ SV78 @ SV15 ) ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[581]) ).

thf(613,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ! [SY179: $i] :
                ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                    | ~ ( in @ SY179 @ SV15 ) ) )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[582]) ).

thf(614,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
          | ~ ( in @ SV77 @ SV15 ) )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[584]) ).

thf(615,plain,
    ! [SV48: $i,SV64: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV18 ) )
        = $false )
      | ( ( in @ SV72 @ SV64 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[585]) ).

thf(616,plain,
    ! [SV18: $i,SV64: $i,SV48: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV48 ) )
        = $false )
      | ( ( in @ SV72 @ SV64 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[585]) ).

thf(617,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( ~ ( in @ SV72 @ SV18 ) )
        = $true )
      | ( ( ~ ( in @ SV72 @ SV48 ) )
        = $true )
      | ( ( in @ SV72 @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[586]) ).

thf(618,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[587]) ).

thf(619,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[587]) ).

thf(620,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[588]) ).

thf(621,plain,
    ! [SV49: $i,SV65: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV19 ) )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[589]) ).

thf(622,plain,
    ! [SV19: $i,SV65: $i,SV49: $i,SV73: $i] :
      ( ( ( ~ ~ ( in @ SV73 @ SV49 ) )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[589]) ).

thf(623,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV19 ) )
        = $true )
      | ( ( ~ ~ ( in @ SV73 @ SV49 ) )
        = $true )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[590]) ).

thf(624,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[591]) ).

thf(625,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[591]) ).

thf(626,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[592]) ).

thf(627,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) ) )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[596]) ).

thf(628,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[596]) ).

thf(629,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) ) )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[597]) ).

thf(630,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[597]) ).

thf(631,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ~ ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
              | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) ) )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[598]) ).

thf(632,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $false )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[598]) ).

thf(633,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) ) )
        = $false )
      | ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[602]) ).

thf(634,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $false )
      | ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[602]) ).

thf(635,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) ) )
        = $false )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[603]) ).

thf(636,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $false )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[603]) ).

thf(637,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ~ ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV24 )
              | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
                = SV54 ) ) )
        = $false )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[604]) ).

thf(638,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $false )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[604]) ).

thf(639,plain,
    ! [SV57: $i,SV27: $i] :
      ( ( ( ( sK7_SY167 @ SV27 @ SV57 )
          = SV27 )
        = $true )
      | ( ( in @ ( sK7_SY167 @ SV27 @ SV57 ) @ SV57 )
        = $true )
      | ( ( SV57
          = ( singleton @ SV27 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[605]) ).

thf(640,plain,
    ! [SV76: $i,SV39: $i,SV9: $i] :
      ( ( ( disjoint @ SV9 @ SV39 )
        = $false )
      | ( ( in @ SV76 @ SV9 )
        = $false )
      | ( ( in @ SV76 @ SV39 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[610]) ).

thf(641,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) )
          | ~ ( in @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) @ SV15 ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[611]) ).

thf(642,plain,
    ! [SV45: $i,SV15: $i,SV78: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ SV78 )
          | ~ ( in @ SV78 @ SV15 ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[612]) ).

thf(643,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ! [SY179: $i] :
              ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                  | ~ ( in @ SY179 @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[613]) ).

thf(644,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 ) )
        = $true )
      | ( ( ~ ( in @ SV77 @ SV15 ) )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[614]) ).

thf(645,plain,
    ! [SV48: $i,SV64: $i,SV18: $i,SV72: $i] :
      ( ( ( in @ SV72 @ SV18 )
        = $true )
      | ( ( in @ SV72 @ SV64 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[615]) ).

thf(646,plain,
    ! [SV18: $i,SV64: $i,SV48: $i,SV72: $i] :
      ( ( ( in @ SV72 @ SV48 )
        = $true )
      | ( ( in @ SV72 @ SV64 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[616]) ).

thf(647,plain,
    ! [SV64: $i,SV48: $i,SV18: $i,SV72: $i] :
      ( ( ( in @ SV72 @ SV18 )
        = $false )
      | ( ( ~ ( in @ SV72 @ SV48 ) )
        = $true )
      | ( ( in @ SV72 @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[617]) ).

thf(648,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
              | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
        = $true )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[618]) ).

thf(649,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                    | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
              | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) ) )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[620]) ).

thf(650,plain,
    ! [SV49: $i,SV65: $i,SV19: $i,SV73: $i] :
      ( ( ( in @ SV73 @ SV19 )
        = $true )
      | ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[621]) ).

thf(651,plain,
    ! [SV19: $i,SV65: $i,SV49: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV49 ) )
        = $true )
      | ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[622]) ).

thf(652,plain,
    ! [SV65: $i,SV49: $i,SV19: $i,SV73: $i] :
      ( ( ( in @ SV73 @ SV19 )
        = $false )
      | ( ( ~ ~ ( in @ SV73 @ SV49 ) )
        = $true )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[623]) ).

thf(653,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
              | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[624]) ).

thf(654,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[626]) ).

thf(655,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[627]) ).

thf(656,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[629]) ).

thf(657,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
          | ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 ) )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[631]) ).

thf(658,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV24 )
          | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV54 ) )
        = $true )
      | ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[633]) ).

thf(659,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV24 )
          | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV54 ) )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[635]) ).

thf(660,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV24 )
          | ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
            = SV54 ) )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[637]) ).

thf(661,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[641]) ).

thf(662,plain,
    ! [SV70: $i,SV15: $i,SV45: $i] :
      ( ( ( ~ ( in @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) @ SV15 ) )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[641]) ).

thf(663,plain,
    ! [SV45: $i,SV15: $i,SV78: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ SV78 ) )
        = $true )
      | ( ( ~ ( in @ SV78 @ SV15 ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[642]) ).

thf(664,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK14_SY179 @ SV45 @ SV15 ) )
                | ~ ( in @ ( sK14_SY179 @ SV45 @ SV15 ) @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[643]) ).

thf(665,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( ~ ( in @ SV77 @ SV15 ) )
        = $true )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[644]) ).

thf(666,plain,
    ! [SV64: $i,SV18: $i,SV48: $i,SV72: $i] :
      ( ( ( in @ SV72 @ SV48 )
        = $false )
      | ( ( in @ SV72 @ SV18 )
        = $false )
      | ( ( in @ SV72 @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[647]) ).

thf(667,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
          | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[648]) ).

thf(668,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
          | ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[649]) ).

thf(669,plain,
    ! [SV19: $i,SV65: $i,SV49: $i,SV73: $i] :
      ( ( ( in @ SV73 @ SV49 )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $false )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[651]) ).

thf(670,plain,
    ! [SV65: $i,SV19: $i,SV49: $i,SV73: $i] :
      ( ( ( ~ ( in @ SV73 @ SV49 ) )
        = $false )
      | ( ( in @ SV73 @ SV19 )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[652]) ).

thf(671,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
          | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[653]) ).

thf(672,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                    | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
              | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) ) )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[654]) ).

thf(673,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV66 )
        = $true )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[655]) ).

thf(674,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[656]) ).

thf(675,plain,
    ! [SV66: $i,SV20: $i,SV50: $i] :
      ( ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV20 )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $true )
      | ( ( in @ ( sK10_SY173 @ SV50 @ SV20 @ SV66 ) @ SV50 )
        = $false )
      | ( ( SV66
          = ( set_union2 @ SV20 @ SV50 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[657]) ).

thf(676,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $true )
      | ( ( in @ ( sK11_SY175 @ SV54 @ SV24 @ SV67 ) @ SV67 )
        = $true )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[658]) ).

thf(677,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[659]) ).

thf(678,plain,
    ! [SV67: $i,SV24: $i,SV54: $i] :
      ( ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV24 )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $true )
      | ( ( ( sK11_SY175 @ SV54 @ SV24 @ SV67 )
          = SV54 )
        = $false )
      | ( ( SV67
          = ( unordered_pair @ SV24 @ SV54 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[660]) ).

thf(679,plain,
    ! [SV15: $i,SV45: $i,SV70: $i] :
      ( ( ( in @ SV70 @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[661]) ).

thf(680,plain,
    ! [SV70: $i,SV15: $i,SV45: $i] :
      ( ( ( in @ ( sK13_SY176 @ SV45 @ SV15 @ SV70 ) @ SV15 )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[662]) ).

thf(681,plain,
    ! [SV45: $i,SV15: $i,SV78: $i,SV70: $i] :
      ( ( ( in @ SV70 @ SV78 )
        = $false )
      | ( ( ~ ( in @ SV78 @ SV15 ) )
        = $true )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[663]) ).

thf(682,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK14_SY179 @ SV45 @ SV15 ) )
              | ~ ( in @ ( sK14_SY179 @ SV45 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[664]) ).

thf(683,plain,
    ! [SV45: $i,SV15: $i,SV77: $i] :
      ( ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( ~ ( ~ ~ ! [SY179: $i] :
                      ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                          | ~ ( in @ SY179 @ SV15 ) )
              | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) ) )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[665]) ).

thf(684,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[667]) ).

thf(685,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[667]) ).

thf(686,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
                | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[668]) ).

thf(687,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[668]) ).

thf(688,plain,
    ! [SV65: $i,SV19: $i,SV49: $i,SV73: $i] :
      ( ( ( in @ SV73 @ SV49 )
        = $true )
      | ( ( in @ SV73 @ SV19 )
        = $false )
      | ( ( in @ SV73 @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[670]) ).

thf(689,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[671]) ).

thf(690,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[671]) ).

thf(691,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
          | ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[672]) ).

thf(692,plain,
    ! [SV45: $i,SV70: $i,SV15: $i,SV78: $i] :
      ( ( ( in @ SV78 @ SV15 )
        = $false )
      | ( ( in @ SV70 @ SV78 )
        = $false )
      | ( ( in @ SV70 @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[681]) ).

thf(693,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK14_SY179 @ SV45 @ SV15 ) )
          | ~ ( in @ ( sK14_SY179 @ SV45 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[682]) ).

thf(694,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ! [SY179: $i] :
                  ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                      | ~ ( in @ SY179 @ SV15 ) )
          | ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[683]) ).

thf(695,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $true )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[684]) ).

thf(696,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $true )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV64 )
        = $true )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[685]) ).

thf(697,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
              | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) ) )
        = $true )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[686]) ).

thf(698,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[689]) ).

thf(699,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[690]) ).

thf(700,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
                | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[691]) ).

thf(701,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[691]) ).

thf(702,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK14_SY179 @ SV45 @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[693]) ).

thf(703,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( ~ ( in @ ( sK14_SY179 @ SV45 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[693]) ).

thf(704,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ! [SY179: $i] :
                  ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                      | ~ ( in @ SY179 @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[694]) ).

thf(705,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[694]) ).

thf(706,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
          | ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[697]) ).

thf(707,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV65 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[699]) ).

thf(708,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
              | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) ) )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[700]) ).

thf(709,plain,
    ! [SV45: $i,SV15: $i] :
      ( ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK14_SY179 @ SV45 @ SV15 ) )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[702]) ).

thf(710,plain,
    ! [SV15: $i,SV45: $i] :
      ( ( ( in @ ( sK14_SY179 @ SV45 @ SV15 ) @ SV15 )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV45 )
        = $true )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[703]) ).

thf(711,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ! [SY179: $i] :
                ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                    | ~ ( in @ SY179 @ SV15 ) ) )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[704]) ).

thf(712,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[706]) ).

thf(713,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( ~ ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 ) )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[706]) ).

thf(714,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
          | ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[708]) ).

thf(715,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ! [SY179: $i] :
              ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SY179 )
                  | ~ ( in @ SY179 @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[711]) ).

thf(716,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $true )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[712]) ).

thf(717,plain,
    ! [SV64: $i,SV18: $i,SV48: $i] :
      ( ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $true )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK8_SY169 @ SV48 @ SV18 @ SV64 ) @ SV48 )
        = $false )
      | ( ( SV64
          = ( set_intersection2 @ SV18 @ SV48 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[713]) ).

thf(718,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[714]) ).

thf(719,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[714]) ).

thf(720,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) )
                | ~ ( in @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[715]) ).

thf(721,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[718]) ).

thf(722,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( ~ ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 ) )
        = $true )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[719]) ).

thf(723,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) )
              | ~ ( in @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[720]) ).

thf(724,plain,
    ! [SV65: $i,SV19: $i,SV49: $i] :
      ( ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV19 )
        = $false )
      | ( ( in @ ( sK9_SY171 @ SV49 @ SV19 @ SV65 ) @ SV49 )
        = $true )
      | ( ( SV65
          = ( set_difference @ SV19 @ SV49 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[722]) ).

thf(725,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) )
          | ~ ( in @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[723]) ).

thf(726,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( ~ ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[725]) ).

thf(727,plain,
    ! [SV15: $i,SV45: $i,SV77: $i] :
      ( ( ( ~ ( in @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[725]) ).

thf(728,plain,
    ! [SV77: $i,SV45: $i,SV15: $i] :
      ( ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[726]) ).

thf(729,plain,
    ! [SV15: $i,SV45: $i,SV77: $i] :
      ( ( ( in @ ( sK15_SY179 @ SV77 @ SV45 @ SV15 ) @ SV15 )
        = $true )
      | ( ( in @ ( sK6_SY149 @ SV15 @ SV45 ) @ SV77 )
        = $false )
      | ( ( in @ SV77 @ SV15 )
        = $false )
      | ( ( SV45
          = ( union @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[727]) ).

thf(730,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[167,729,728,724,721,717,716,710,709,707,705,701,698,696,695,692,688,687,680,679,678,677,676,675,674,673,669,666,650,646,645,640,639,638,636,634,632,630,628,625,619,609,608,607,606,601,600,599,595,594,593,583,576,547,546,545,518,517,494,458,457,440,439,434,433,414,413,412,406,394,393,368,361,349,348,341,338,325,317,310,270,247,246,245,244,243,217,216,212,183,176,175,174,173,172,171,170,169,168]) ).

thf(731,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[730]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SEU161+2 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.04  % Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.09/0.19  % Computer : n006.cluster.edu
% 0.09/0.19  % Model    : x86_64 x86_64
% 0.09/0.19  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.19  % Memory   : 8046.5625MB
% 0.09/0.19  % OS       : Linux 6.8.0-71-generic
% 0.09/0.19  % CPULimit : 300
% 0.09/0.19  % WCLimit  : 300
% 0.09/0.19  % DateTime : Tue Oct  6 15:02:07 UTC 2026
% 0.09/0.19  % CPUTime  : 
% 0.09/0.19  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 6.38/1.39  
% 6.38/1.39   No.of.Axioms: 42
% 6.38/1.39  
% 6.38/1.39   Length.of.Defs: 0
% 6.38/1.39  
% 6.38/1.39   Contains.Choice.Funs: false
% 6.38/1.39  .....................
% 6.38/1.39  
% 6.38/1.39  ********************************
% 6.38/1.39  *   All subproblems solved!    *
% 6.38/1.39  ********************************
% 6.38/1.39  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:1,axioms:43,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:730,loop_count:0,foatp_calls:1,translation:fof_full)
% 6.38/1.39  
% 6.38/1.39  %**** Beginning of derivation protocol ****
% 6.38/1.39  % SZS output start CNFRefutation
% See solution above
% 1.35/1.40  
% 1.35/1.40  %**** End of derivation protocol ****
% 1.35/1.40  %**** no. of clauses in derivation: 683 ****
% 1.35/1.40  %**** clause counter: 730 ****
% 1.35/1.40  
% 1.35/1.40  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:1,axioms:43,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:730,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------