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

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SEU143+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/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p

% Computer : n002.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 10:43:02 AM UTC 2026

% Result   : Theorem 0.07s 0.25s
% Output   : CNFRefutation 0.07s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   21
%            Number of leaves      :   21
% Syntax   : Number of formulae    :  173 ( 113 unt;   0 typ;   0 def)
%            Number of atoms       :  863 ( 455 equ;   0 cnn)
%            Maximal formula atoms :    3 (   4 avg)
%            Number of connectives : 1161 ( 290   ~; 224   |;   0   &; 623   @)
%                                         (  18 <=>;   6  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   17 (  14 usr;   4 con; 0-2 aty)
%            Number of variables   :  277 (   0   ^; 277   !;   0   ?; 277   :)

% 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_proper_subset,type,
    proper_subset: $i > $i > $o ).

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

thf(tp_sK2_SY21,type,
    sK2_SY21: $i > $i ).

thf(tp_sK3_SY29,type,
    sK3_SY29: $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_unordered_pair,type,
    unordered_pair: $i > $i > $i ).

thf(3,axiom,
    ! [A: $i] :
      ( ( empty @ A )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t6_boole) ).

thf(4,axiom,
    ! [A: $i] :
      ( ( set_difference @ empty_set @ A )
      = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t4_boole) ).

thf(5,axiom,
    ! [A: $i] :
      ( ( set_difference @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_boole) ).

thf(7,axiom,
    ! [A: $i] :
      ( ( set_intersection2 @ A @ empty_set )
      = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_boole) ).

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

thf(18,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(19,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k4_xboole_0) ).

thf(20,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k3_xboole_0) ).

thf(21,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k2_xboole_0) ).

thf(22,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k2_tarski) ).

thf(23,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k1_xboole_0) ).

thf(24,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k1_tarski) ).

thf(26,axiom,
    ! [A: $i,B: $i] :
      ( ( disjoint @ A @ B )
    <=> ( ( set_intersection2 @ A @ B )
        = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d7_xboole_0) ).

thf(32,axiom,
    ! [A: $i] :
      ( ( A = empty_set )
    <=> ! [B: $i] :
          ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_xboole_0) ).

thf(33,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( singleton @ A ) )
    <=> ! [C: $i] :
          ( ( in @ C @ B )
        <=> ( C = A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_tarski) ).

thf(43,axiom,
    ! [A: $i] :
      ( ( unordered_pair @ A @ A )
      = ( singleton @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t69_enumset1) ).

thf(50,axiom,
    ! [A: $i] :
      ( ( subset @ A @ empty_set )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_xboole_1) ).

thf(53,axiom,
    ! [A: $i,B: $i] :
      ( ( ( set_difference @ A @ B )
        = empty_set )
    <=> ( subset @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t37_xboole_1) ).

thf(56,axiom,
    ! [A: $i] : ( subset @ empty_set @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_xboole_1) ).

thf(63,axiom,
    ! [A: $i,B: $i] :
      ( ( ( set_difference @ A @ B )
        = empty_set )
    <=> ( subset @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l32_xboole_1) ).

thf(64,conjecture,
    ! [A: $i] :
      ( ( singleton @ A )
     != empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l1_zfmisc_1) ).

thf(65,negated_conjecture,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[64]) ).

thf(66,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $false ),
    inference(unfold_def,[status(thm)],[65]) ).

thf(67,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(68,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(69,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[5]) ).

thf(70,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(71,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(72,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[18]) ).

thf(73,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[19]) ).

thf(74,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[20]) ).

thf(75,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[21]) ).

thf(76,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[22]) ).

thf(77,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[23]) ).

thf(78,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[24]) ).

thf(79,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
        <=> ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[26]) ).

thf(80,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[32]) ).

thf(81,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( singleton @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( C = A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[33]) ).

thf(82,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[43]) ).

thf(83,plain,
    ( ( ! [A: $i] :
          ( ( subset @ A @ empty_set )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[50]) ).

thf(84,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[53]) ).

thf(85,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[56]) ).

thf(86,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[63]) ).

thf(87,plain,
    ( ( ( singleton @ sK1_A )
     != empty_set )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[66]) ).

thf(88,plain,
    ( ( ~ ( ( ( singleton @ sK1_A )
           != empty_set ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[87]) ).

thf(89,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[86]) ).

thf(90,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(copy,[status(thm)],[85]) ).

thf(91,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[84]) ).

thf(92,plain,
    ( ( ! [A: $i] :
          ( ( subset @ A @ empty_set )
         => ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[83]) ).

thf(93,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[82]) ).

thf(94,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( singleton @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( C = A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[81]) ).

thf(95,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[80]) ).

thf(96,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
        <=> ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[79]) ).

thf(97,plain,
    $true = $true,
    inference(copy,[status(thm)],[78]) ).

thf(98,plain,
    $true = $true,
    inference(copy,[status(thm)],[77]) ).

thf(99,plain,
    $true = $true,
    inference(copy,[status(thm)],[76]) ).

thf(100,plain,
    $true = $true,
    inference(copy,[status(thm)],[75]) ).

thf(101,plain,
    $true = $true,
    inference(copy,[status(thm)],[74]) ).

thf(102,plain,
    $true = $true,
    inference(copy,[status(thm)],[73]) ).

thf(103,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[72]) ).

thf(104,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[71]) ).

thf(105,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[70]) ).

thf(106,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[69]) ).

thf(107,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[68]) ).

thf(108,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
         => ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[67]) ).

thf(109,plain,
    ( ( ~ ( ( ( singleton @ sK1_A )
           != empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[88]) ).

thf(110,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( subset @ SX0 @ empty_set )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[92]) ).

thf(111,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)],[95]) ).

thf(112,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
            | ~ ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[91]) ).

thf(113,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)],[94]) ).

thf(114,plain,
    ( ( ~ ( ( ( singleton @ sK1_A )
           != empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[109]) ).

thf(115,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( disjoint @ SX0 @ SX1 )
                | ( ( set_intersection2 @ SX0 @ SX1 )
                  = empty_set ) )
            | ~ ( ( ( set_intersection2 @ SX0 @ SX1 )
                 != empty_set )
                | ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[96]) ).

thf(116,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
            | ~ ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[89]) ).

thf(117,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( empty @ SX0 )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[108]) ).

thf(118,plain,
    ! [SV1: $i] :
      ( ( subset @ empty_set @ SV1 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[90]) ).

thf(119,plain,
    ! [SV2: $i] :
      ( ( ( unordered_pair @ SV2 @ SV2 )
        = ( singleton @ SV2 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[93]) ).

thf(120,plain,
    ! [SV3: $i] :
      ( ( ( set_union2 @ SV3 @ empty_set )
        = SV3 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[104]) ).

thf(121,plain,
    ! [SV4: $i] :
      ( ( ( set_intersection2 @ SV4 @ empty_set )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[105]) ).

thf(122,plain,
    ! [SV5: $i] :
      ( ( ( set_difference @ SV5 @ empty_set )
        = SV5 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[106]) ).

thf(123,plain,
    ! [SV6: $i] :
      ( ( ( set_difference @ empty_set @ SV6 )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[107]) ).

thf(124,plain,
    ! [SV7: $i] :
      ( ( ~ ( subset @ SV7 @ empty_set )
        | ( SV7 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[110]) ).

thf(125,plain,
    ! [SV8: $i] :
      ( ( ~ ( ~ ( ( SV8 != empty_set )
                | ! [SY20: $i] :
                    ~ ( in @ SY20 @ SV8 ) )
            | ~ ( ~ ! [SY21: $i] :
                      ~ ( in @ SY21 @ SV8 )
                | ( SV8 = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[111]) ).

thf(126,plain,
    ! [SV9: $i] :
      ( ( ! [SY22: $i] :
            ~ ( ~ ( ( ( set_difference @ SV9 @ SY22 )
                   != empty_set )
                  | ( subset @ SV9 @ SY22 ) )
              | ~ ( ~ ( subset @ SV9 @ SY22 )
                  | ( ( set_difference @ SV9 @ SY22 )
                    = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[112]) ).

thf(127,plain,
    ! [SV10: $i] :
      ( ( ! [SY23: $i] :
            ~ ( ~ ( ( SY23
                   != ( singleton @ SV10 ) )
                  | ! [SY24: $i] :
                      ~ ( ~ ( ~ ( in @ SY24 @ SY23 )
                            | ( SY24 = SV10 ) )
                        | ~ ( ( SY24 != SV10 )
                            | ( in @ SY24 @ SY23 ) ) ) )
              | ~ ( ~ ! [SY25: $i] :
                        ~ ( ~ ( ~ ( in @ SY25 @ SY23 )
                              | ( SY25 = SV10 ) )
                          | ~ ( ( SY25 != SV10 )
                              | ( in @ SY25 @ SY23 ) ) )
                  | ( SY23
                    = ( singleton @ SV10 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[113]) ).

thf(128,plain,
    ( ( ( singleton @ sK1_A )
     != empty_set )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[114]) ).

thf(129,plain,
    ! [SV11: $i] :
      ( ( ! [SY26: $i] :
            ~ ( ~ ( ~ ( disjoint @ SV11 @ SY26 )
                  | ( ( set_intersection2 @ SV11 @ SY26 )
                    = empty_set ) )
              | ~ ( ( ( set_intersection2 @ SV11 @ SY26 )
                   != empty_set )
                  | ( disjoint @ SV11 @ SY26 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[115]) ).

thf(130,plain,
    ! [SV12: $i] :
      ( ( ! [SY27: $i] :
            ~ ( ~ ( ( ( set_difference @ SV12 @ SY27 )
                   != empty_set )
                  | ( subset @ SV12 @ SY27 ) )
              | ~ ( ~ ( subset @ SV12 @ SY27 )
                  | ( ( set_difference @ SV12 @ SY27 )
                    = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[116]) ).

thf(131,plain,
    ! [SV13: $i] :
      ( ( ~ ( empty @ SV13 )
        | ( SV13 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[117]) ).

thf(132,plain,
    ! [SV7: $i] :
      ( ( ( ~ ( subset @ SV7 @ empty_set ) )
        = $true )
      | ( ( SV7 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[124]) ).

thf(133,plain,
    ! [SV8: $i] :
      ( ( ~ ( ( SV8 != empty_set )
            | ! [SY20: $i] :
                ~ ( in @ SY20 @ SV8 ) )
        | ~ ( ~ ! [SY21: $i] :
                  ~ ( in @ SY21 @ SV8 )
            | ( SV8 = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[125]) ).

thf(134,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ~ ( ~ ( ( ( set_difference @ SV9 @ SV14 )
                 != empty_set )
                | ( subset @ SV9 @ SV14 ) )
            | ~ ( ~ ( subset @ SV9 @ SV14 )
                | ( ( set_difference @ SV9 @ SV14 )
                  = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[126]) ).

thf(135,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ~ ( ~ ( ( SV15
                 != ( singleton @ SV10 ) )
                | ! [SY28: $i] :
                    ~ ( ~ ( ~ ( in @ SY28 @ SV15 )
                          | ( SY28 = SV10 ) )
                      | ~ ( ( SY28 != SV10 )
                          | ( in @ SY28 @ SV15 ) ) ) )
            | ~ ( ~ ! [SY29: $i] :
                      ~ ( ~ ( ~ ( in @ SY29 @ SV15 )
                            | ( SY29 = SV10 ) )
                        | ~ ( ( SY29 != SV10 )
                            | ( in @ SY29 @ SV15 ) ) )
                | ( SV15
                  = ( singleton @ SV10 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[127]) ).

thf(136,plain,
    ( ( ( singleton @ sK1_A )
      = empty_set )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[128]) ).

thf(137,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ~ ( ~ ( ~ ( disjoint @ SV11 @ SV16 )
                | ( ( set_intersection2 @ SV11 @ SV16 )
                  = empty_set ) )
            | ~ ( ( ( set_intersection2 @ SV11 @ SV16 )
                 != empty_set )
                | ( disjoint @ SV11 @ SV16 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[129]) ).

thf(138,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ~ ( ~ ( ( ( set_difference @ SV12 @ SV17 )
                 != empty_set )
                | ( subset @ SV12 @ SV17 ) )
            | ~ ( ~ ( subset @ SV12 @ SV17 )
                | ( ( set_difference @ SV12 @ SV17 )
                  = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[130]) ).

thf(139,plain,
    ! [SV13: $i] :
      ( ( ( ~ ( empty @ SV13 ) )
        = $true )
      | ( ( SV13 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[131]) ).

thf(140,plain,
    ! [SV7: $i] :
      ( ( ( subset @ SV7 @ empty_set )
        = $false )
      | ( ( SV7 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[132]) ).

thf(141,plain,
    ! [SV8: $i] :
      ( ( ~ ( ( SV8 != empty_set )
            | ! [SY20: $i] :
                ~ ( in @ SY20 @ SV8 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[133]) ).

thf(142,plain,
    ! [SV8: $i] :
      ( ( ~ ( ~ ! [SY21: $i] :
                  ~ ( in @ SY21 @ SV8 )
            | ( SV8 = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[133]) ).

thf(143,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ~ ( ( ( set_difference @ SV9 @ SV14 )
             != empty_set )
            | ( subset @ SV9 @ SV14 ) )
        | ~ ( ~ ( subset @ SV9 @ SV14 )
            | ( ( set_difference @ SV9 @ SV14 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[134]) ).

thf(144,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ~ ( ( SV15
             != ( singleton @ SV10 ) )
            | ! [SY28: $i] :
                ~ ( ~ ( ~ ( in @ SY28 @ SV15 )
                      | ( SY28 = SV10 ) )
                  | ~ ( ( SY28 != SV10 )
                      | ( in @ SY28 @ SV15 ) ) ) )
        | ~ ( ~ ! [SY29: $i] :
                  ~ ( ~ ( ~ ( in @ SY29 @ SV15 )
                        | ( SY29 = SV10 ) )
                    | ~ ( ( SY29 != SV10 )
                        | ( in @ SY29 @ SV15 ) ) )
            | ( SV15
              = ( singleton @ SV10 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[135]) ).

thf(145,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ~ ( ~ ( disjoint @ SV11 @ SV16 )
            | ( ( set_intersection2 @ SV11 @ SV16 )
              = empty_set ) )
        | ~ ( ( ( set_intersection2 @ SV11 @ SV16 )
             != empty_set )
            | ( disjoint @ SV11 @ SV16 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[137]) ).

thf(146,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ~ ( ( ( set_difference @ SV12 @ SV17 )
             != empty_set )
            | ( subset @ SV12 @ SV17 ) )
        | ~ ( ~ ( subset @ SV12 @ SV17 )
            | ( ( set_difference @ SV12 @ SV17 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[138]) ).

thf(147,plain,
    ! [SV13: $i] :
      ( ( ( empty @ SV13 )
        = $false )
      | ( ( SV13 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[139]) ).

thf(148,plain,
    ! [SV8: $i] :
      ( ( ( SV8 != empty_set )
        | ! [SY20: $i] :
            ~ ( in @ SY20 @ SV8 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[141]) ).

thf(149,plain,
    ! [SV8: $i] :
      ( ( ~ ! [SY21: $i] :
              ~ ( in @ SY21 @ SV8 )
        | ( SV8 = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[142]) ).

thf(150,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ~ ( ( ( set_difference @ SV9 @ SV14 )
             != empty_set )
            | ( subset @ SV9 @ SV14 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[143]) ).

thf(151,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ~ ( ~ ( subset @ SV9 @ SV14 )
            | ( ( set_difference @ SV9 @ SV14 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[143]) ).

thf(152,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ~ ( ( SV15
             != ( singleton @ SV10 ) )
            | ! [SY28: $i] :
                ~ ( ~ ( ~ ( in @ SY28 @ SV15 )
                      | ( SY28 = SV10 ) )
                  | ~ ( ( SY28 != SV10 )
                      | ( in @ SY28 @ SV15 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[144]) ).

thf(153,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ~ ( ~ ! [SY29: $i] :
                  ~ ( ~ ( ~ ( in @ SY29 @ SV15 )
                        | ( SY29 = SV10 ) )
                    | ~ ( ( SY29 != SV10 )
                        | ( in @ SY29 @ SV15 ) ) )
            | ( SV15
              = ( singleton @ SV10 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[144]) ).

thf(154,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ~ ( ~ ( disjoint @ SV11 @ SV16 )
            | ( ( set_intersection2 @ SV11 @ SV16 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[145]) ).

thf(155,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ~ ( ( ( set_intersection2 @ SV11 @ SV16 )
             != empty_set )
            | ( disjoint @ SV11 @ SV16 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[145]) ).

thf(156,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ~ ( ( ( set_difference @ SV12 @ SV17 )
             != empty_set )
            | ( subset @ SV12 @ SV17 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[146]) ).

thf(157,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ~ ( ~ ( subset @ SV12 @ SV17 )
            | ( ( set_difference @ SV12 @ SV17 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[146]) ).

thf(158,plain,
    ! [SV8: $i] :
      ( ( ( SV8 != empty_set )
        = $true )
      | ( ( ! [SY20: $i] :
              ~ ( in @ SY20 @ SV8 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[148]) ).

thf(159,plain,
    ! [SV8: $i] :
      ( ( ( ~ ! [SY21: $i] :
                ~ ( in @ SY21 @ SV8 ) )
        = $true )
      | ( ( SV8 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[149]) ).

thf(160,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ( ( set_difference @ SV9 @ SV14 )
         != empty_set )
        | ( subset @ SV9 @ SV14 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[150]) ).

thf(161,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ~ ( subset @ SV9 @ SV14 )
        | ( ( set_difference @ SV9 @ SV14 )
          = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[151]) ).

thf(162,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ( SV15
         != ( singleton @ SV10 ) )
        | ! [SY28: $i] :
            ~ ( ~ ( ~ ( in @ SY28 @ SV15 )
                  | ( SY28 = SV10 ) )
              | ~ ( ( SY28 != SV10 )
                  | ( in @ SY28 @ SV15 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[152]) ).

thf(163,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ~ ! [SY29: $i] :
              ~ ( ~ ( ~ ( in @ SY29 @ SV15 )
                    | ( SY29 = SV10 ) )
                | ~ ( ( SY29 != SV10 )
                    | ( in @ SY29 @ SV15 ) ) )
        | ( SV15
          = ( singleton @ SV10 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[153]) ).

thf(164,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ~ ( disjoint @ SV11 @ SV16 )
        | ( ( set_intersection2 @ SV11 @ SV16 )
          = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[154]) ).

thf(165,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ( ( set_intersection2 @ SV11 @ SV16 )
         != empty_set )
        | ( disjoint @ SV11 @ SV16 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[155]) ).

thf(166,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ( ( set_difference @ SV12 @ SV17 )
         != empty_set )
        | ( subset @ SV12 @ SV17 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[156]) ).

thf(167,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ~ ( subset @ SV12 @ SV17 )
        | ( ( set_difference @ SV12 @ SV17 )
          = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[157]) ).

thf(168,plain,
    ! [SV8: $i] :
      ( ( ( SV8 = empty_set )
        = $false )
      | ( ( ! [SY20: $i] :
              ~ ( in @ SY20 @ SV8 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[158]) ).

thf(169,plain,
    ! [SV8: $i] :
      ( ( ( ! [SY21: $i] :
              ~ ( in @ SY21 @ SV8 ) )
        = $false )
      | ( ( SV8 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[159]) ).

thf(170,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ( ( set_difference @ SV9 @ SV14 )
         != empty_set )
        = $true )
      | ( ( subset @ SV9 @ SV14 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[160]) ).

thf(171,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ( ~ ( subset @ SV9 @ SV14 ) )
        = $true )
      | ( ( ( set_difference @ SV9 @ SV14 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[161]) ).

thf(172,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ( SV15
         != ( singleton @ SV10 ) )
        = $true )
      | ( ( ! [SY28: $i] :
              ~ ( ~ ( ~ ( in @ SY28 @ SV15 )
                    | ( SY28 = SV10 ) )
                | ~ ( ( SY28 != SV10 )
                    | ( in @ SY28 @ SV15 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[162]) ).

thf(173,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ( ~ ! [SY29: $i] :
                ~ ( ~ ( ~ ( in @ SY29 @ SV15 )
                      | ( SY29 = SV10 ) )
                  | ~ ( ( SY29 != SV10 )
                      | ( in @ SY29 @ SV15 ) ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[163]) ).

thf(174,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ( ~ ( disjoint @ SV11 @ SV16 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV11 @ SV16 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[164]) ).

thf(175,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ( ( set_intersection2 @ SV11 @ SV16 )
         != empty_set )
        = $true )
      | ( ( disjoint @ SV11 @ SV16 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[165]) ).

thf(176,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ( ( set_difference @ SV12 @ SV17 )
         != empty_set )
        = $true )
      | ( ( subset @ SV12 @ SV17 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[166]) ).

thf(177,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ( ~ ( subset @ SV12 @ SV17 ) )
        = $true )
      | ( ( ( set_difference @ SV12 @ SV17 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[167]) ).

thf(178,plain,
    ! [SV8: $i,SV18: $i] :
      ( ( ( ~ ( in @ SV18 @ SV8 ) )
        = $true )
      | ( ( SV8 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[168]) ).

thf(179,plain,
    ! [SV8: $i] :
      ( ( ( ~ ( in @ ( sK2_SY21 @ SV8 ) @ SV8 ) )
        = $false )
      | ( ( SV8 = empty_set )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[169]) ).

thf(180,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ( ( set_difference @ SV9 @ SV14 )
          = empty_set )
        = $false )
      | ( ( subset @ SV9 @ SV14 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[170]) ).

thf(181,plain,
    ! [SV14: $i,SV9: $i] :
      ( ( ( subset @ SV9 @ SV14 )
        = $false )
      | ( ( ( set_difference @ SV9 @ SV14 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[171]) ).

thf(182,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ( SV15
          = ( singleton @ SV10 ) )
        = $false )
      | ( ( ! [SY28: $i] :
              ~ ( ~ ( ~ ( in @ SY28 @ SV15 )
                    | ( SY28 = SV10 ) )
                | ~ ( ( SY28 != SV10 )
                    | ( in @ SY28 @ SV15 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[172]) ).

thf(183,plain,
    ! [SV10: $i,SV15: $i] :
      ( ( ( ! [SY29: $i] :
              ~ ( ~ ( ~ ( in @ SY29 @ SV15 )
                    | ( SY29 = SV10 ) )
                | ~ ( ( SY29 != SV10 )
                    | ( in @ SY29 @ SV15 ) ) ) )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[173]) ).

thf(184,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ( disjoint @ SV11 @ SV16 )
        = $false )
      | ( ( ( set_intersection2 @ SV11 @ SV16 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[174]) ).

thf(185,plain,
    ! [SV16: $i,SV11: $i] :
      ( ( ( ( set_intersection2 @ SV11 @ SV16 )
          = empty_set )
        = $false )
      | ( ( disjoint @ SV11 @ SV16 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[175]) ).

thf(186,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ( ( set_difference @ SV12 @ SV17 )
          = empty_set )
        = $false )
      | ( ( subset @ SV12 @ SV17 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[176]) ).

thf(187,plain,
    ! [SV17: $i,SV12: $i] :
      ( ( ( subset @ SV12 @ SV17 )
        = $false )
      | ( ( ( set_difference @ SV12 @ SV17 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[177]) ).

thf(188,plain,
    ! [SV8: $i,SV18: $i] :
      ( ( ( in @ SV18 @ SV8 )
        = $false )
      | ( ( SV8 = empty_set )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[178]) ).

thf(189,plain,
    ! [SV8: $i] :
      ( ( ( in @ ( sK2_SY21 @ SV8 ) @ SV8 )
        = $true )
      | ( ( SV8 = empty_set )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[179]) ).

thf(190,plain,
    ! [SV10: $i,SV15: $i,SV19: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ SV19 @ SV15 )
                  | ( SV19 = SV10 ) )
              | ~ ( ( SV19 != SV10 )
                  | ( in @ SV19 @ SV15 ) ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[182]) ).

thf(191,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
                  | ( ( sK3_SY29 @ SV10 @ SV15 )
                    = SV10 ) )
              | ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
                   != SV10 )
                  | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) ) )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[183]) ).

thf(192,plain,
    ! [SV10: $i,SV15: $i,SV19: $i] :
      ( ( ( ~ ( ~ ( in @ SV19 @ SV15 )
              | ( SV19 = SV10 ) )
          | ~ ( ( SV19 != SV10 )
              | ( in @ SV19 @ SV15 ) ) )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[190]) ).

thf(193,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
              | ( ( sK3_SY29 @ SV10 @ SV15 )
                = SV10 ) )
          | ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
               != SV10 )
              | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[191]) ).

thf(194,plain,
    ! [SV10: $i,SV15: $i,SV19: $i] :
      ( ( ( ~ ( ~ ( in @ SV19 @ SV15 )
              | ( SV19 = SV10 ) ) )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[192]) ).

thf(195,plain,
    ! [SV15: $i,SV10: $i,SV19: $i] :
      ( ( ( ~ ( ( SV19 != SV10 )
              | ( in @ SV19 @ SV15 ) ) )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[192]) ).

thf(196,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
              | ( ( sK3_SY29 @ SV10 @ SV15 )
                = SV10 ) ) )
        = $true )
      | ( ( ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
               != SV10 )
              | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[193]) ).

thf(197,plain,
    ! [SV10: $i,SV15: $i,SV19: $i] :
      ( ( ( ~ ( in @ SV19 @ SV15 )
          | ( SV19 = SV10 ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[194]) ).

thf(198,plain,
    ! [SV15: $i,SV10: $i,SV19: $i] :
      ( ( ( ( SV19 != SV10 )
          | ( in @ SV19 @ SV15 ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[195]) ).

thf(199,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ~ ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
          | ( ( sK3_SY29 @ SV10 @ SV15 )
            = SV10 ) )
        = $false )
      | ( ( ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
               != SV10 )
              | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[196]) ).

thf(200,plain,
    ! [SV10: $i,SV15: $i,SV19: $i] :
      ( ( ( ~ ( in @ SV19 @ SV15 ) )
        = $true )
      | ( ( SV19 = SV10 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[197]) ).

thf(201,plain,
    ! [SV15: $i,SV10: $i,SV19: $i] :
      ( ( ( SV19 != SV10 )
        = $true )
      | ( ( in @ SV19 @ SV15 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[198]) ).

thf(202,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ~ ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
               != SV10 )
              | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[199]) ).

thf(203,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $false )
      | ( ( ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
               != SV10 )
              | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[199]) ).

thf(204,plain,
    ! [SV10: $i,SV15: $i,SV19: $i] :
      ( ( ( in @ SV19 @ SV15 )
        = $false )
      | ( ( SV19 = SV10 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[200]) ).

thf(205,plain,
    ! [SV15: $i,SV10: $i,SV19: $i] :
      ( ( ( SV19 = SV10 )
        = $false )
      | ( ( in @ SV19 @ SV15 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[201]) ).

thf(206,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $true )
      | ( ( ~ ( ( ( sK3_SY29 @ SV10 @ SV15 )
               != SV10 )
              | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[202]) ).

thf(207,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
           != SV10 )
          | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[203]) ).

thf(208,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
           != SV10 )
          | ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 ) )
        = $false )
      | ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[206]) ).

thf(209,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
         != SV10 )
        = $false )
      | ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[207]) ).

thf(210,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $false )
      | ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[207]) ).

thf(211,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
         != SV10 )
        = $false )
      | ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[208]) ).

thf(212,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $false )
      | ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[208]) ).

thf(213,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $true )
      | ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $false )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[209]) ).

thf(214,plain,
    ! [SV15: $i,SV10: $i] :
      ( ( ( ( sK3_SY29 @ SV10 @ SV15 )
          = SV10 )
        = $true )
      | ( ( in @ ( sK3_SY29 @ SV10 @ SV15 ) @ SV15 )
        = $true )
      | ( ( SV15
          = ( singleton @ SV10 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[211]) ).

thf(215,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[97,214,213,212,210,205,204,189,188,187,186,185,184,181,180,147,140,136,123,122,121,120,119,118,103,102,101,100,99,98]) ).

thf(216,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[215]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SEU143+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/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.18  % Computer : n002.cluster.edu
% 0.07/0.18  % Model    : x86_64 x86_64
% 0.07/0.18  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.18  % Memory   : 8046.5625MB
% 0.07/0.18  % OS       : Linux 6.8.0-71-generic
% 0.07/0.18  % CPULimit : 300
% 0.07/0.18  % WCLimit  : 300
% 0.07/0.18  % DateTime : Tue Oct  6 15:04:12 UTC 2026
% 0.07/0.18  % CPUTime  : 
% 0.07/0.18  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.25  
% 0.07/0.25   No.of.Axioms: 20
% 0.07/0.25  
% 0.07/0.25   Length.of.Defs: 0
% 0.07/0.25  
% 0.07/0.25   Contains.Choice.Funs: false
% 0.07/0.25  ....
% 0.07/0.25  
% 0.07/0.25  ********************************
% 0.07/0.25  *   All subproblems solved!    *
% 0.07/0.25  ********************************
% 0.07/0.25  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:20,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:215,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.07/0.25  
% 0.07/0.25  %**** Beginning of derivation protocol ****
% 0.07/0.25  % SZS output start CNFRefutation
% See solution above
% 0.07/0.25  
% 0.07/0.25  %**** End of derivation protocol ****
% 0.07/0.25  %**** no. of clauses in derivation: 173 ****
% 0.07/0.25  %**** clause counter: 215 ****
% 0.07/0.25  
% 0.07/0.25  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:20,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:215,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------