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

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SEU125+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 : n004.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 10:42:58 AM UTC 2026

% Result   : Theorem 57.77s 9.86s
% Output   : CNFRefutation 57.77s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   23
%            Number of leaves      :   17
% Syntax   : Number of formulae    :  192 ( 103 unt;   0 typ;   0 def)
%            Number of atoms       : 1213 ( 403 equ;   0 cnn)
%            Maximal formula atoms :    4 (   6 avg)
%            Number of connectives : 2277 ( 378   ~; 384   |;  12   &;1470   @)
%                                         (  12 <=>;  21  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   4 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   15 (  12 usr;   6 con; 0-3 aty)
%            Number of variables   :  451 (   0   ^; 451   !;   0   ?; 451   :)

% Comments : 
%------------------------------------------------------------------------------
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_sK1_A,type,
    sK1_A: $i ).

thf(tp_sK2_SY30,type,
    sK2_SY30: $i ).

thf(tp_sK3_SY32,type,
    sK3_SY32: $i ).

thf(tp_sK4_SY53,type,
    sK4_SY53: $i > $i > $i ).

thf(tp_sK5_SY56,type,
    sK5_SY56: $i > $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_subset,type,
    subset: $i > $i > $o ).

thf(4,axiom,
    ! [A: $i] :
      ( ( set_union2 @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_boole) ).

thf(6,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',reflexivity_r1_tarski) ).

thf(10,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(11,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ B @ A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(12,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ A @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(14,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k3_xboole_0) ).

thf(15,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k2_xboole_0) ).

thf(16,axiom,
    $true,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k1_xboole_0) ).

thf(19,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(20,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(22,axiom,
    ! [A: $i,B: $i] :
      ( ( A = B )
    <=> ( ( subset @ A @ B )
        & ( subset @ B @ A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d10_xboole_0) ).

thf(24,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(26,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t7_xboole_1) ).

thf(28,axiom,
    ! [A: $i] :
      ( ( subset @ A @ empty_set )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t3_xboole_1) ).

thf(30,axiom,
    ! [A: $i] : ( subset @ empty_set @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_xboole_1) ).

thf(31,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( subset @ A @ B )
        & ( subset @ B @ C ) )
     => ( subset @ A @ C ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_xboole_1) ).

thf(32,conjecture,
    ! [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(33,negated_conjecture,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ C @ B ) )
         => ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[32]) ).

thf(34,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ C @ B ) )
         => ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[33]) ).

thf(35,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(36,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(37,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(38,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[11]) ).

thf(39,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[12]) ).

thf(40,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[14]) ).

thf(41,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[15]) ).

thf(42,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[16]) ).

thf(43,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
        <=> ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[19]) ).

thf(44,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)],[20]) ).

thf(45,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
        <=> ( ( subset @ A @ B )
            & ( subset @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[22]) ).

thf(46,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[24]) ).

thf(47,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[26]) ).

thf(48,plain,
    ( ( ! [A: $i] :
          ( ( subset @ A @ empty_set )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[28]) ).

thf(49,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[30]) ).

thf(50,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ B @ C ) )
         => ( subset @ A @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[31]) ).

thf(51,plain,
    ( ( ! [SY30: $i,SY31: $i] :
          ( ( ( subset @ sK1_A @ SY30 )
            & ( subset @ SY31 @ SY30 ) )
         => ( subset @ ( set_union2 @ sK1_A @ SY31 ) @ SY30 ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[34]) ).

thf(52,plain,
    ( ( ! [SY32: $i] :
          ( ( ( subset @ sK1_A @ sK2_SY30 )
            & ( subset @ SY32 @ sK2_SY30 ) )
         => ( subset @ ( set_union2 @ sK1_A @ SY32 ) @ sK2_SY30 ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[51]) ).

thf(53,plain,
    ( ( ( ( subset @ sK1_A @ sK2_SY30 )
        & ( subset @ sK3_SY32 @ sK2_SY30 ) )
     => ( subset @ ( set_union2 @ sK1_A @ sK3_SY32 ) @ sK2_SY30 ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[52]) ).

thf(54,plain,
    ( ( subset @ sK1_A @ sK2_SY30 )
    = $true ),
    inference(standard_cnf,[status(thm)],[53]) ).

thf(55,plain,
    ( ( subset @ sK3_SY32 @ sK2_SY30 )
    = $true ),
    inference(standard_cnf,[status(thm)],[53]) ).

thf(56,plain,
    ( ( subset @ ( set_union2 @ sK1_A @ sK3_SY32 ) @ sK2_SY30 )
    = $false ),
    inference(standard_cnf,[status(thm)],[53]) ).

thf(57,plain,
    ( ( ~ ( subset @ ( set_union2 @ sK1_A @ sK3_SY32 ) @ sK2_SY30 ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[56]) ).

thf(58,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ B @ C ) )
         => ( subset @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[50]) ).

thf(59,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(copy,[status(thm)],[49]) ).

thf(60,plain,
    ( ( ! [A: $i] :
          ( ( subset @ A @ empty_set )
         => ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[48]) ).

thf(61,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[47]) ).

thf(62,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[46]) ).

thf(63,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
        <=> ( ( subset @ A @ B )
            & ( subset @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[45]) ).

thf(64,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)],[44]) ).

thf(65,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
        <=> ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[43]) ).

thf(66,plain,
    $true = $true,
    inference(copy,[status(thm)],[42]) ).

thf(67,plain,
    $true = $true,
    inference(copy,[status(thm)],[41]) ).

thf(68,plain,
    $true = $true,
    inference(copy,[status(thm)],[40]) ).

thf(69,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[39]) ).

thf(70,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[38]) ).

thf(71,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[37]) ).

thf(72,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[36]) ).

thf(73,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[35]) ).

thf(74,plain,
    ( ( subset @ sK3_SY32 @ sK2_SY30 )
    = $true ),
    inference(copy,[status(thm)],[55]) ).

thf(75,plain,
    ( ( subset @ sK1_A @ sK2_SY30 )
    = $true ),
    inference(copy,[status(thm)],[54]) ).

thf(76,plain,
    ( ( ~ ( subset @ ( set_union2 @ sK1_A @ sK3_SY32 ) @ sK2_SY30 ) )
    = $true ),
    inference(copy,[status(thm)],[57]) ).

thf(77,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)],[64]) ).

thf(78,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)],[65]) ).

thf(79,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ( ~ ~ ( ~ ( subset @ SX0 @ SX1 )
                | ~ ( subset @ SX1 @ SX2 ) )
          | ( subset @ SX0 @ SX2 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[58]) ).

thf(80,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( subset @ SX0 @ empty_set )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[60]) ).

thf(81,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( SX0 != SX1 )
                | ~ ( ~ ( subset @ SX0 @ SX1 )
                    | ~ ( subset @ SX1 @ SX0 ) ) )
            | ~ ( ~ ~ ( ~ ( subset @ SX0 @ SX1 )
                      | ~ ( subset @ SX1 @ SX0 ) )
                | ( SX0 = SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[63]) ).

thf(82,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ~ ( empty @ SX0 )
          | ~ ( empty @ ( set_union2 @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[70]) ).

thf(83,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ~ ( empty @ SX0 )
          | ~ ( empty @ ( set_union2 @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[69]) ).

thf(84,plain,
    ! [SV1: $i] :
      ( ( subset @ empty_set @ SV1 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[59]) ).

thf(85,plain,
    ! [SV2: $i] :
      ( ( ! [SY33: $i] : ( subset @ SV2 @ ( set_union2 @ SV2 @ SY33 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[61]) ).

thf(86,plain,
    ! [SV3: $i] :
      ( ( ! [SY34: $i] :
            ( ( set_union2 @ SV3 @ SY34 )
            = ( set_union2 @ SY34 @ SV3 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[62]) ).

thf(87,plain,
    ! [SV4: $i] :
      ( ( ! [SY35: $i] :
            ( ( set_union2 @ SV4 @ SV4 )
            = SV4 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[71]) ).

thf(88,plain,
    ! [SV5: $i] :
      ( ( ! [SY36: $i] : ( subset @ SV5 @ SV5 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[72]) ).

thf(89,plain,
    ! [SV6: $i] :
      ( ( ( set_union2 @ SV6 @ empty_set )
        = SV6 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[73]) ).

thf(90,plain,
    ( ( subset @ ( set_union2 @ sK1_A @ sK3_SY32 ) @ sK2_SY30 )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[76]) ).

thf(91,plain,
    ! [SV7: $i] :
      ( ( ! [SY37: $i,SY38: $i] :
            ~ ( ~ ( ( SY38
                   != ( set_union2 @ SV7 @ SY37 ) )
                  | ! [SY39: $i] :
                      ~ ( ~ ( ~ ( in @ SY39 @ SY38 )
                            | ( in @ SY39 @ SV7 )
                            | ( in @ SY39 @ SY37 ) )
                        | ~ ( ~ ( ( in @ SY39 @ SV7 )
                                | ( in @ SY39 @ SY37 ) )
                            | ( in @ SY39 @ SY38 ) ) ) )
              | ~ ( ~ ! [SY40: $i] :
                        ~ ( ~ ( ~ ( in @ SY40 @ SY38 )
                              | ( in @ SY40 @ SV7 )
                              | ( in @ SY40 @ SY37 ) )
                          | ~ ( ~ ( ( in @ SY40 @ SV7 )
                                  | ( in @ SY40 @ SY37 ) )
                              | ( in @ SY40 @ SY38 ) ) )
                  | ( SY38
                    = ( set_union2 @ SV7 @ SY37 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[77]) ).

thf(92,plain,
    ! [SV8: $i] :
      ( ( ! [SY41: $i] :
            ~ ( ~ ( ~ ( subset @ SV8 @ SY41 )
                  | ! [SY42: $i] :
                      ( ~ ( in @ SY42 @ SV8 )
                      | ( in @ SY42 @ SY41 ) ) )
              | ~ ( ~ ! [SY43: $i] :
                        ( ~ ( in @ SY43 @ SV8 )
                        | ( in @ SY43 @ SY41 ) )
                  | ( subset @ SV8 @ SY41 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[78]) ).

thf(93,plain,
    ! [SV9: $i] :
      ( ( ! [SY44: $i,SY45: $i] :
            ( ~ ~ ( ~ ( subset @ SV9 @ SY44 )
                  | ~ ( subset @ SY44 @ SY45 ) )
            | ( subset @ SV9 @ SY45 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[79]) ).

thf(94,plain,
    ! [SV10: $i] :
      ( ( ~ ( subset @ SV10 @ empty_set )
        | ( SV10 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[80]) ).

thf(95,plain,
    ! [SV11: $i] :
      ( ( ! [SY46: $i] :
            ~ ( ~ ( ( SV11 != SY46 )
                  | ~ ( ~ ( subset @ SV11 @ SY46 )
                      | ~ ( subset @ SY46 @ SV11 ) ) )
              | ~ ( ~ ~ ( ~ ( subset @ SV11 @ SY46 )
                        | ~ ( subset @ SY46 @ SV11 ) )
                  | ( SV11 = SY46 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[81]) ).

thf(96,plain,
    ! [SV12: $i] :
      ( ( ! [SY47: $i] :
            ( ~ ~ ( empty @ SV12 )
            | ~ ( empty @ ( set_union2 @ SY47 @ SV12 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[82]) ).

thf(97,plain,
    ! [SV13: $i] :
      ( ( ! [SY48: $i] :
            ( ~ ~ ( empty @ SV13 )
            | ~ ( empty @ ( set_union2 @ SV13 @ SY48 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[83]) ).

thf(98,plain,
    ! [SV14: $i,SV2: $i] :
      ( ( subset @ SV2 @ ( set_union2 @ SV2 @ SV14 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[85]) ).

thf(99,plain,
    ! [SV15: $i,SV3: $i] :
      ( ( ( set_union2 @ SV3 @ SV15 )
        = ( set_union2 @ SV15 @ SV3 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[86]) ).

thf(100,plain,
    ! [SV4: $i] :
      ( ( ( set_union2 @ SV4 @ SV4 )
        = SV4 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[87]) ).

thf(101,plain,
    ! [SV5: $i] :
      ( ( subset @ SV5 @ SV5 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[88]) ).

thf(102,plain,
    ! [SV18: $i,SV7: $i] :
      ( ( ! [SY49: $i] :
            ~ ( ~ ( ( SY49
                   != ( set_union2 @ SV7 @ SV18 ) )
                  | ! [SY50: $i] :
                      ~ ( ~ ( ~ ( in @ SY50 @ SY49 )
                            | ( in @ SY50 @ SV7 )
                            | ( in @ SY50 @ SV18 ) )
                        | ~ ( ~ ( ( in @ SY50 @ SV7 )
                                | ( in @ SY50 @ SV18 ) )
                            | ( in @ SY50 @ SY49 ) ) ) )
              | ~ ( ~ ! [SY51: $i] :
                        ~ ( ~ ( ~ ( in @ SY51 @ SY49 )
                              | ( in @ SY51 @ SV7 )
                              | ( in @ SY51 @ SV18 ) )
                          | ~ ( ~ ( ( in @ SY51 @ SV7 )
                                  | ( in @ SY51 @ SV18 ) )
                              | ( in @ SY51 @ SY49 ) ) )
                  | ( SY49
                    = ( set_union2 @ SV7 @ SV18 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[91]) ).

thf(103,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ~ ( ~ ( ~ ( subset @ SV8 @ SV19 )
                | ! [SY52: $i] :
                    ( ~ ( in @ SY52 @ SV8 )
                    | ( in @ SY52 @ SV19 ) ) )
            | ~ ( ~ ! [SY53: $i] :
                      ( ~ ( in @ SY53 @ SV8 )
                      | ( in @ SY53 @ SV19 ) )
                | ( subset @ SV8 @ SV19 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[92]) ).

thf(104,plain,
    ! [SV20: $i,SV9: $i] :
      ( ( ! [SY54: $i] :
            ( ~ ~ ( ~ ( subset @ SV9 @ SV20 )
                  | ~ ( subset @ SV20 @ SY54 ) )
            | ( subset @ SV9 @ SY54 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[93]) ).

thf(105,plain,
    ! [SV10: $i] :
      ( ( ( ~ ( subset @ SV10 @ empty_set ) )
        = $true )
      | ( ( SV10 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[94]) ).

thf(106,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ~ ( ~ ( ( SV11 != SV21 )
                | ~ ( ~ ( subset @ SV11 @ SV21 )
                    | ~ ( subset @ SV21 @ SV11 ) ) )
            | ~ ( ~ ~ ( ~ ( subset @ SV11 @ SV21 )
                      | ~ ( subset @ SV21 @ SV11 ) )
                | ( SV11 = SV21 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[95]) ).

thf(107,plain,
    ! [SV22: $i,SV12: $i] :
      ( ( ~ ~ ( empty @ SV12 )
        | ~ ( empty @ ( set_union2 @ SV22 @ SV12 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[96]) ).

thf(108,plain,
    ! [SV23: $i,SV13: $i] :
      ( ( ~ ~ ( empty @ SV13 )
        | ~ ( empty @ ( set_union2 @ SV13 @ SV23 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[97]) ).

thf(109,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ~ ( ~ ( ( SV24
                 != ( set_union2 @ SV7 @ SV18 ) )
                | ! [SY55: $i] :
                    ~ ( ~ ( ~ ( in @ SY55 @ SV24 )
                          | ( in @ SY55 @ SV7 )
                          | ( in @ SY55 @ SV18 ) )
                      | ~ ( ~ ( ( in @ SY55 @ SV7 )
                              | ( in @ SY55 @ SV18 ) )
                          | ( in @ SY55 @ SV24 ) ) ) )
            | ~ ( ~ ! [SY56: $i] :
                      ~ ( ~ ( ~ ( in @ SY56 @ SV24 )
                            | ( in @ SY56 @ SV7 )
                            | ( in @ SY56 @ SV18 ) )
                        | ~ ( ~ ( ( in @ SY56 @ SV7 )
                                | ( in @ SY56 @ SV18 ) )
                            | ( in @ SY56 @ SV24 ) ) )
                | ( SV24
                  = ( set_union2 @ SV7 @ SV18 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[102]) ).

thf(110,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ~ ( ~ ( subset @ SV8 @ SV19 )
            | ! [SY52: $i] :
                ( ~ ( in @ SY52 @ SV8 )
                | ( in @ SY52 @ SV19 ) ) )
        | ~ ( ~ ! [SY53: $i] :
                  ( ~ ( in @ SY53 @ SV8 )
                  | ( in @ SY53 @ SV19 ) )
            | ( subset @ SV8 @ SV19 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[103]) ).

thf(111,plain,
    ! [SV25: $i,SV20: $i,SV9: $i] :
      ( ( ~ ~ ( ~ ( subset @ SV9 @ SV20 )
              | ~ ( subset @ SV20 @ SV25 ) )
        | ( subset @ SV9 @ SV25 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[104]) ).

thf(112,plain,
    ! [SV10: $i] :
      ( ( ( subset @ SV10 @ empty_set )
        = $false )
      | ( ( SV10 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[105]) ).

thf(113,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ~ ( ( SV11 != SV21 )
            | ~ ( ~ ( subset @ SV11 @ SV21 )
                | ~ ( subset @ SV21 @ SV11 ) ) )
        | ~ ( ~ ~ ( ~ ( subset @ SV11 @ SV21 )
                  | ~ ( subset @ SV21 @ SV11 ) )
            | ( SV11 = SV21 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[106]) ).

thf(114,plain,
    ! [SV22: $i,SV12: $i] :
      ( ( ( ~ ~ ( empty @ SV12 ) )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV22 @ SV12 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[107]) ).

thf(115,plain,
    ! [SV23: $i,SV13: $i] :
      ( ( ( ~ ~ ( empty @ SV13 ) )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV13 @ SV23 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[108]) ).

thf(116,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ~ ( ( SV24
             != ( set_union2 @ SV7 @ SV18 ) )
            | ! [SY55: $i] :
                ~ ( ~ ( ~ ( in @ SY55 @ SV24 )
                      | ( in @ SY55 @ SV7 )
                      | ( in @ SY55 @ SV18 ) )
                  | ~ ( ~ ( ( in @ SY55 @ SV7 )
                          | ( in @ SY55 @ SV18 ) )
                      | ( in @ SY55 @ SV24 ) ) ) )
        | ~ ( ~ ! [SY56: $i] :
                  ~ ( ~ ( ~ ( in @ SY56 @ SV24 )
                        | ( in @ SY56 @ SV7 )
                        | ( in @ SY56 @ SV18 ) )
                    | ~ ( ~ ( ( in @ SY56 @ SV7 )
                            | ( in @ SY56 @ SV18 ) )
                        | ( in @ SY56 @ SV24 ) ) )
            | ( SV24
              = ( set_union2 @ SV7 @ SV18 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[109]) ).

thf(117,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ~ ( ~ ( subset @ SV8 @ SV19 )
            | ! [SY52: $i] :
                ( ~ ( in @ SY52 @ SV8 )
                | ( in @ SY52 @ SV19 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[110]) ).

thf(118,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ~ ( ~ ! [SY53: $i] :
                  ( ~ ( in @ SY53 @ SV8 )
                  | ( in @ SY53 @ SV19 ) )
            | ( subset @ SV8 @ SV19 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[110]) ).

thf(119,plain,
    ! [SV25: $i,SV20: $i,SV9: $i] :
      ( ( ( ~ ~ ( ~ ( subset @ SV9 @ SV20 )
                | ~ ( subset @ SV20 @ SV25 ) ) )
        = $true )
      | ( ( subset @ SV9 @ SV25 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[111]) ).

thf(120,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ~ ( ( SV11 != SV21 )
            | ~ ( ~ ( subset @ SV11 @ SV21 )
                | ~ ( subset @ SV21 @ SV11 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[113]) ).

thf(121,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ~ ( ~ ~ ( ~ ( subset @ SV11 @ SV21 )
                  | ~ ( subset @ SV21 @ SV11 ) )
            | ( SV11 = SV21 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[113]) ).

thf(122,plain,
    ! [SV22: $i,SV12: $i] :
      ( ( ( ~ ( empty @ SV12 ) )
        = $false )
      | ( ( ~ ( empty @ ( set_union2 @ SV22 @ SV12 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[114]) ).

thf(123,plain,
    ! [SV23: $i,SV13: $i] :
      ( ( ( ~ ( empty @ SV13 ) )
        = $false )
      | ( ( ~ ( empty @ ( set_union2 @ SV13 @ SV23 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[115]) ).

thf(124,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ~ ( ( SV24
             != ( set_union2 @ SV7 @ SV18 ) )
            | ! [SY55: $i] :
                ~ ( ~ ( ~ ( in @ SY55 @ SV24 )
                      | ( in @ SY55 @ SV7 )
                      | ( in @ SY55 @ SV18 ) )
                  | ~ ( ~ ( ( in @ SY55 @ SV7 )
                          | ( in @ SY55 @ SV18 ) )
                      | ( in @ SY55 @ SV24 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[116]) ).

thf(125,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ~ ( ~ ! [SY56: $i] :
                  ~ ( ~ ( ~ ( in @ SY56 @ SV24 )
                        | ( in @ SY56 @ SV7 )
                        | ( in @ SY56 @ SV18 ) )
                    | ~ ( ~ ( ( in @ SY56 @ SV7 )
                            | ( in @ SY56 @ SV18 ) )
                        | ( in @ SY56 @ SV24 ) ) )
            | ( SV24
              = ( set_union2 @ SV7 @ SV18 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[116]) ).

thf(126,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ~ ( subset @ SV8 @ SV19 )
        | ! [SY52: $i] :
            ( ~ ( in @ SY52 @ SV8 )
            | ( in @ SY52 @ SV19 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[117]) ).

thf(127,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ~ ! [SY53: $i] :
              ( ~ ( in @ SY53 @ SV8 )
              | ( in @ SY53 @ SV19 ) )
        | ( subset @ SV8 @ SV19 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[118]) ).

thf(128,plain,
    ! [SV25: $i,SV20: $i,SV9: $i] :
      ( ( ( ~ ( ~ ( subset @ SV9 @ SV20 )
              | ~ ( subset @ SV20 @ SV25 ) ) )
        = $false )
      | ( ( subset @ SV9 @ SV25 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[119]) ).

thf(129,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( SV11 != SV21 )
        | ~ ( ~ ( subset @ SV11 @ SV21 )
            | ~ ( subset @ SV21 @ SV11 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[120]) ).

thf(130,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ~ ~ ( ~ ( subset @ SV11 @ SV21 )
              | ~ ( subset @ SV21 @ SV11 ) )
        | ( SV11 = SV21 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[121]) ).

thf(131,plain,
    ! [SV22: $i,SV12: $i] :
      ( ( ( empty @ SV12 )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV22 @ SV12 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[122]) ).

thf(132,plain,
    ! [SV23: $i,SV13: $i] :
      ( ( ( empty @ SV13 )
        = $true )
      | ( ( ~ ( empty @ ( set_union2 @ SV13 @ SV23 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[123]) ).

thf(133,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ( SV24
         != ( set_union2 @ SV7 @ SV18 ) )
        | ! [SY55: $i] :
            ~ ( ~ ( ~ ( in @ SY55 @ SV24 )
                  | ( in @ SY55 @ SV7 )
                  | ( in @ SY55 @ SV18 ) )
              | ~ ( ~ ( ( in @ SY55 @ SV7 )
                      | ( in @ SY55 @ SV18 ) )
                  | ( in @ SY55 @ SV24 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[124]) ).

thf(134,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ~ ! [SY56: $i] :
              ~ ( ~ ( ~ ( in @ SY56 @ SV24 )
                    | ( in @ SY56 @ SV7 )
                    | ( in @ SY56 @ SV18 ) )
                | ~ ( ~ ( ( in @ SY56 @ SV7 )
                        | ( in @ SY56 @ SV18 ) )
                    | ( in @ SY56 @ SV24 ) ) )
        | ( SV24
          = ( set_union2 @ SV7 @ SV18 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[125]) ).

thf(135,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ( ~ ( subset @ SV8 @ SV19 ) )
        = $true )
      | ( ( ! [SY52: $i] :
              ( ~ ( in @ SY52 @ SV8 )
              | ( in @ SY52 @ SV19 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[126]) ).

thf(136,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ( ~ ! [SY53: $i] :
                ( ~ ( in @ SY53 @ SV8 )
                | ( in @ SY53 @ SV19 ) ) )
        = $true )
      | ( ( subset @ SV8 @ SV19 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[127]) ).

thf(137,plain,
    ! [SV25: $i,SV20: $i,SV9: $i] :
      ( ( ( ~ ( subset @ SV9 @ SV20 )
          | ~ ( subset @ SV20 @ SV25 ) )
        = $true )
      | ( ( subset @ SV9 @ SV25 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[128]) ).

thf(138,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( SV11 != SV21 )
        = $true )
      | ( ( ~ ( ~ ( subset @ SV11 @ SV21 )
              | ~ ( subset @ SV21 @ SV11 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[129]) ).

thf(139,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( ~ ~ ( ~ ( subset @ SV11 @ SV21 )
                | ~ ( subset @ SV21 @ SV11 ) ) )
        = $true )
      | ( ( SV11 = SV21 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[130]) ).

thf(140,plain,
    ! [SV12: $i,SV22: $i] :
      ( ( ( empty @ ( set_union2 @ SV22 @ SV12 ) )
        = $false )
      | ( ( empty @ SV12 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[131]) ).

thf(141,plain,
    ! [SV23: $i,SV13: $i] :
      ( ( ( empty @ ( set_union2 @ SV13 @ SV23 ) )
        = $false )
      | ( ( empty @ SV13 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[132]) ).

thf(142,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ( SV24
         != ( set_union2 @ SV7 @ SV18 ) )
        = $true )
      | ( ( ! [SY55: $i] :
              ~ ( ~ ( ~ ( in @ SY55 @ SV24 )
                    | ( in @ SY55 @ SV7 )
                    | ( in @ SY55 @ SV18 ) )
                | ~ ( ~ ( ( in @ SY55 @ SV7 )
                        | ( in @ SY55 @ SV18 ) )
                    | ( in @ SY55 @ SV24 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[133]) ).

thf(143,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ( ~ ! [SY56: $i] :
                ~ ( ~ ( ~ ( in @ SY56 @ SV24 )
                      | ( in @ SY56 @ SV7 )
                      | ( in @ SY56 @ SV18 ) )
                  | ~ ( ~ ( ( in @ SY56 @ SV7 )
                          | ( in @ SY56 @ SV18 ) )
                      | ( in @ SY56 @ SV24 ) ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[134]) ).

thf(144,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ( subset @ SV8 @ SV19 )
        = $false )
      | ( ( ! [SY52: $i] :
              ( ~ ( in @ SY52 @ SV8 )
              | ( in @ SY52 @ SV19 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[135]) ).

thf(145,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ( ! [SY53: $i] :
              ( ~ ( in @ SY53 @ SV8 )
              | ( in @ SY53 @ SV19 ) ) )
        = $false )
      | ( ( subset @ SV8 @ SV19 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[136]) ).

thf(146,plain,
    ! [SV25: $i,SV20: $i,SV9: $i] :
      ( ( ( ~ ( subset @ SV9 @ SV20 ) )
        = $true )
      | ( ( ~ ( subset @ SV20 @ SV25 ) )
        = $true )
      | ( ( subset @ SV9 @ SV25 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[137]) ).

thf(147,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( SV11 = SV21 )
        = $false )
      | ( ( ~ ( ~ ( subset @ SV11 @ SV21 )
              | ~ ( subset @ SV21 @ SV11 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[138]) ).

thf(148,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( ~ ( ~ ( subset @ SV11 @ SV21 )
              | ~ ( subset @ SV21 @ SV11 ) ) )
        = $false )
      | ( ( SV11 = SV21 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[139]) ).

thf(149,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false )
      | ( ( ! [SY55: $i] :
              ~ ( ~ ( ~ ( in @ SY55 @ SV24 )
                    | ( in @ SY55 @ SV7 )
                    | ( in @ SY55 @ SV18 ) )
                | ~ ( ~ ( ( in @ SY55 @ SV7 )
                        | ( in @ SY55 @ SV18 ) )
                    | ( in @ SY55 @ SV24 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[142]) ).

thf(150,plain,
    ! [SV18: $i,SV7: $i,SV24: $i] :
      ( ( ( ! [SY56: $i] :
              ~ ( ~ ( ~ ( in @ SY56 @ SV24 )
                    | ( in @ SY56 @ SV7 )
                    | ( in @ SY56 @ SV18 ) )
                | ~ ( ~ ( ( in @ SY56 @ SV7 )
                        | ( in @ SY56 @ SV18 ) )
                    | ( in @ SY56 @ SV24 ) ) ) )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[143]) ).

thf(151,plain,
    ! [SV19: $i,SV8: $i,SV26: $i] :
      ( ( ( ~ ( in @ SV26 @ SV8 )
          | ( in @ SV26 @ SV19 ) )
        = $true )
      | ( ( subset @ SV8 @ SV19 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[144]) ).

thf(152,plain,
    ! [SV8: $i,SV19: $i] :
      ( ( ( ~ ( in @ ( sK4_SY53 @ SV19 @ SV8 ) @ SV8 )
          | ( in @ ( sK4_SY53 @ SV19 @ SV8 ) @ SV19 ) )
        = $false )
      | ( ( subset @ SV8 @ SV19 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[145]) ).

thf(153,plain,
    ! [SV25: $i,SV20: $i,SV9: $i] :
      ( ( ( subset @ SV9 @ SV20 )
        = $false )
      | ( ( ~ ( subset @ SV20 @ SV25 ) )
        = $true )
      | ( ( subset @ SV9 @ SV25 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[146]) ).

thf(154,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( ~ ( subset @ SV11 @ SV21 )
          | ~ ( subset @ SV21 @ SV11 ) )
        = $false )
      | ( ( SV11 = SV21 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[147]) ).

thf(155,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( ~ ( subset @ SV11 @ SV21 )
          | ~ ( subset @ SV21 @ SV11 ) )
        = $true )
      | ( ( SV11 = SV21 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[148]) ).

thf(156,plain,
    ! [SV18: $i,SV7: $i,SV24: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV27 @ SV24 )
                  | ( in @ SV27 @ SV7 )
                  | ( in @ SV27 @ SV18 ) )
              | ~ ( ~ ( ( in @ SV27 @ SV7 )
                      | ( in @ SV27 @ SV18 ) )
                  | ( in @ SV27 @ SV24 ) ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[149]) ).

thf(157,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                      | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) ) )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[150]) ).

thf(158,plain,
    ! [SV19: $i,SV8: $i,SV26: $i] :
      ( ( ( ~ ( in @ SV26 @ SV8 ) )
        = $true )
      | ( ( in @ SV26 @ SV19 )
        = $true )
      | ( ( subset @ SV8 @ SV19 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[151]) ).

thf(159,plain,
    ! [SV8: $i,SV19: $i] :
      ( ( ( ~ ( in @ ( sK4_SY53 @ SV19 @ SV8 ) @ SV8 ) )
        = $false )
      | ( ( subset @ SV8 @ SV19 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[152]) ).

thf(160,plain,
    ! [SV8: $i,SV19: $i] :
      ( ( ( in @ ( sK4_SY53 @ SV19 @ SV8 ) @ SV19 )
        = $false )
      | ( ( subset @ SV8 @ SV19 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[152]) ).

thf(161,plain,
    ! [SV9: $i,SV25: $i,SV20: $i] :
      ( ( ( subset @ SV20 @ SV25 )
        = $false )
      | ( ( subset @ SV9 @ SV20 )
        = $false )
      | ( ( subset @ SV9 @ SV25 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[153]) ).

thf(162,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( ~ ( subset @ SV11 @ SV21 ) )
        = $false )
      | ( ( SV11 = SV21 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[154]) ).

thf(163,plain,
    ! [SV11: $i,SV21: $i] :
      ( ( ( ~ ( subset @ SV21 @ SV11 ) )
        = $false )
      | ( ( SV11 = SV21 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[154]) ).

thf(164,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( ~ ( subset @ SV11 @ SV21 ) )
        = $true )
      | ( ( ~ ( subset @ SV21 @ SV11 ) )
        = $true )
      | ( ( SV11 = SV21 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[155]) ).

thf(165,plain,
    ! [SV18: $i,SV7: $i,SV24: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( in @ SV27 @ SV24 )
              | ( in @ SV27 @ SV7 )
              | ( in @ SV27 @ SV18 ) )
          | ~ ( ~ ( ( in @ SV27 @ SV7 )
                  | ( in @ SV27 @ SV18 ) )
              | ( in @ SV27 @ SV24 ) ) )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[156]) ).

thf(166,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
          | ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[157]) ).

thf(167,plain,
    ! [SV19: $i,SV8: $i,SV26: $i] :
      ( ( ( in @ SV26 @ SV8 )
        = $false )
      | ( ( in @ SV26 @ SV19 )
        = $true )
      | ( ( subset @ SV8 @ SV19 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[158]) ).

thf(168,plain,
    ! [SV8: $i,SV19: $i] :
      ( ( ( in @ ( sK4_SY53 @ SV19 @ SV8 ) @ SV8 )
        = $true )
      | ( ( subset @ SV8 @ SV19 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[159]) ).

thf(169,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( subset @ SV11 @ SV21 )
        = $true )
      | ( ( SV11 = SV21 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[162]) ).

thf(170,plain,
    ! [SV11: $i,SV21: $i] :
      ( ( ( subset @ SV21 @ SV11 )
        = $true )
      | ( ( SV11 = SV21 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[163]) ).

thf(171,plain,
    ! [SV21: $i,SV11: $i] :
      ( ( ( subset @ SV11 @ SV21 )
        = $false )
      | ( ( ~ ( subset @ SV21 @ SV11 ) )
        = $true )
      | ( ( SV11 = SV21 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[164]) ).

thf(172,plain,
    ! [SV18: $i,SV7: $i,SV24: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( in @ SV27 @ SV24 )
              | ( in @ SV27 @ SV7 )
              | ( in @ SV27 @ SV18 ) ) )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[165]) ).

thf(173,plain,
    ! [SV24: $i,SV18: $i,SV7: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( ( in @ SV27 @ SV7 )
                  | ( in @ SV27 @ SV18 ) )
              | ( in @ SV27 @ SV24 ) ) )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[165]) ).

thf(174,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) ) )
        = $true )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[166]) ).

thf(175,plain,
    ! [SV11: $i,SV21: $i] :
      ( ( ( subset @ SV21 @ SV11 )
        = $false )
      | ( ( subset @ SV11 @ SV21 )
        = $false )
      | ( ( SV11 = SV21 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[171]) ).

thf(176,plain,
    ! [SV18: $i,SV7: $i,SV24: $i,SV27: $i] :
      ( ( ( ~ ( in @ SV27 @ SV24 )
          | ( in @ SV27 @ SV7 )
          | ( in @ SV27 @ SV18 ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[172]) ).

thf(177,plain,
    ! [SV24: $i,SV18: $i,SV7: $i,SV27: $i] :
      ( ( ( ~ ( ( in @ SV27 @ SV7 )
              | ( in @ SV27 @ SV18 ) )
          | ( in @ SV27 @ SV24 ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[173]) ).

thf(178,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[174]) ).

thf(179,plain,
    ! [SV18: $i,SV7: $i,SV24: $i,SV27: $i] :
      ( ( ( ~ ( in @ SV27 @ SV24 ) )
        = $true )
      | ( ( ( in @ SV27 @ SV7 )
          | ( in @ SV27 @ SV18 ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[176]) ).

thf(180,plain,
    ! [SV24: $i,SV18: $i,SV7: $i,SV27: $i] :
      ( ( ( ~ ( ( in @ SV27 @ SV7 )
              | ( in @ SV27 @ SV18 ) ) )
        = $true )
      | ( ( in @ SV27 @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[177]) ).

thf(181,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[178]) ).

thf(182,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[178]) ).

thf(183,plain,
    ! [SV18: $i,SV7: $i,SV24: $i,SV27: $i] :
      ( ( ( in @ SV27 @ SV24 )
        = $false )
      | ( ( ( in @ SV27 @ SV7 )
          | ( in @ SV27 @ SV18 ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[179]) ).

thf(184,plain,
    ! [SV24: $i,SV18: $i,SV7: $i,SV27: $i] :
      ( ( ( ( in @ SV27 @ SV7 )
          | ( in @ SV27 @ SV18 ) )
        = $false )
      | ( ( in @ SV27 @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[180]) ).

thf(185,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $true )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[181]) ).

thf(186,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[182]) ).

thf(187,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $false )
      | ( ( ~ ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
                  | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) ) )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[182]) ).

thf(188,plain,
    ! [SV24: $i,SV18: $i,SV7: $i,SV27: $i] :
      ( ( ( in @ SV27 @ SV7 )
        = $true )
      | ( ( in @ SV27 @ SV18 )
        = $true )
      | ( ( in @ SV27 @ SV24 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[183]) ).

thf(189,plain,
    ! [SV18: $i,SV24: $i,SV7: $i,SV27: $i] :
      ( ( ( in @ SV27 @ SV7 )
        = $false )
      | ( ( in @ SV27 @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[184]) ).

thf(190,plain,
    ! [SV7: $i,SV24: $i,SV18: $i,SV27: $i] :
      ( ( ( in @ SV27 @ SV18 )
        = $false )
      | ( ( in @ SV27 @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[184]) ).

thf(191,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[185]) ).

thf(192,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[186]) ).

thf(193,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 ) )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[187]) ).

thf(194,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) ) )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[191]) ).

thf(195,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[191]) ).

thf(196,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) ) )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[192]) ).

thf(197,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[192]) ).

thf(198,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ~ ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
              | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) ) )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[193]) ).

thf(199,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $false )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[193]) ).

thf(200,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[194]) ).

thf(201,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[196]) ).

thf(202,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
          | ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 ) )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[198]) ).

thf(203,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV24 )
        = $true )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[200]) ).

thf(204,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[201]) ).

thf(205,plain,
    ! [SV24: $i,SV7: $i,SV18: $i] :
      ( ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV7 )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $true )
      | ( ( in @ ( sK5_SY56 @ SV18 @ SV7 @ SV24 ) @ SV18 )
        = $false )
      | ( ( SV24
          = ( set_union2 @ SV7 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[202]) ).

thf(206,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[66,205,204,203,199,197,195,190,189,188,175,170,169,168,167,161,160,141,140,112,101,100,99,98,90,89,84,75,74,68,67]) ).

thf(207,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[206]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SEU125+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
% 0.09/0.16  % Computer : n004.cluster.edu
% 0.09/0.16  % Model    : x86_64 x86_64
% 0.09/0.16  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.16  % Memory   : 8046.5625MB
% 0.09/0.16  % OS       : Linux 6.8.0-71-generic
% 0.09/0.16  % CPULimit : 300
% 0.09/0.16  % WCLimit  : 300
% 0.09/0.16  % DateTime : Tue Oct  6 15:01:18 UTC 2026
% 0.09/0.17  % CPUTime  : 
% 0.09/0.17  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 57.77/9.86  
% 57.77/9.86   No.of.Axioms: 16
% 57.77/9.86  
% 57.77/9.86   Length.of.Defs: 0
% 57.77/9.86  
% 57.77/9.86   Contains.Choice.Funs: false
% 57.77/9.86  .....
% 57.77/9.86  
% 57.77/9.86  ********************************
% 57.77/9.86  *   All subproblems solved!    *
% 57.77/9.86  ********************************
% 57.77/9.86  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:1,axioms:18,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:206,loop_count:0,foatp_calls:1,translation:fof_full)
% 57.77/9.86  
% 57.77/9.86  %**** Beginning of derivation protocol ****
% 57.77/9.86  % SZS output start CNFRefutation
% See solution above
% 57.77/9.86  
% 57.77/9.86  %**** End of derivation protocol ****
% 57.77/9.86  %**** no. of clauses in derivation: 192 ****
% 57.77/9.86  %**** clause counter: 206 ****
% 57.77/9.86  
% 57.77/9.86  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:1,axioms:18,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:206,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------