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Leo-III---1.8.0.THM-Ref.s

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%------------------------------------------------------------------------------
% File     : Leo-III---1.8.0
% Problem  : SEU174+2 : TPTP v9.3.1. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39

% Computer : n005.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 : Sun Sep 27 08:37:54 AM UTC 2026

% Result   : Theorem 8.55s 3.77s
% Output   : Refutation 9.57s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :  111
% Syntax   : Number of formulae    :  224 (  59 unt;   0 typ;   0 def)
%            Number of atoms       :  679 ( 171 equ;   0 cnn)
%            Maximal formula atoms :   18 (   3 avg)
%            Number of connectives : 2064 ( 108   ~;  20   |; 177   &;1501   @)
%                                         (  39 <=>; 219  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   16 (   7 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   21 (  19 usr;   2 con; 0-2 aty)
%            Number of variables   :  552 (   0   ^; 519   !;  33   ?; 552   :)

% Comments : 
%------------------------------------------------------------------------------
thf(element_decl,type,
    element: $i > $i > $o ).

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

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

thf(complements_of_subsets_decl,type,
    complements_of_subsets: $i > $i > $i ).

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

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

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

thf(cartesian_product2_decl,type,
    cartesian_product2: $i > $i > $i ).

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

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

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

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

thf(set_union2_decl,type,
    set_union2: $i > $i > $i ).

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

thf(set_intersection2_decl,type,
    set_intersection2: $i > $i > $i ).

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

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

thf(are_equipotent_decl,type,
    are_equipotent: $i > $i > $o ).

thf(subset_complement_decl,type,
    subset_complement: $i > $i > $i ).

thf(79,axiom,
    empty_set @ empty,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(594,plain,
    empty_set @ empty,
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[79]) ).

thf(100,axiom,
    ! [A: $i] :
      ( ( A != empty_set )
     => ! [B: $i] :
          ( ( A @ powerset @ ( B @ element ) )
         => ! [C: $i] :
              ( ( A @ ( C @ element ) )
             => ( ~ ( B @ ( C @ in ) )
               => ( B @ ( A @ subset_complement ) @ ( C @ in ) ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t50_subset_1) ).

thf(690,plain,
    ! [A: $i] :
      ( ( A != empty_set )
     => ! [B: $i] :
          ( ( A @ powerset @ ( B @ element ) )
         => ! [C: $i] :
              ( ( A @ ( C @ element ) )
             => ( ~ ( B @ ( C @ in ) )
               => ( B @ ( A @ subset_complement ) @ ( C @ in ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[100]) ).

thf(32,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( B @ ( A @ set_union2 ) ) )
    <=> ! [D: $i] :
          ( ( C @ ( D @ in ) )
        <=> ( ( B @ ( D @ in ) )
            | ( A @ ( D @ in ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_xboole_0) ).

thf(351,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ! [D: $i] :
            ( ( ( ( B @ ( D @ in ) )
                | ( A @ ( D @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( B @ ( D @ in ) )
                | ( A @ ( D @ in ) ) ) ) )
       => ( C
          = ( B @ ( A @ set_union2 ) ) ) )
      & ( ( C
          = ( B @ ( A @ set_union2 ) ) )
       => ! [D: $i] :
            ( ( ( ( B @ ( D @ in ) )
                | ( A @ ( D @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( B @ ( D @ in ) )
                | ( A @ ( D @ in ) ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[32]) ).

thf(87,axiom,
    ! [A: $i] :
      ( ( A @ empty )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t6_boole) ).

thf(645,plain,
    ! [A: $i] :
      ( ( A @ empty )
     => ( A = empty_set ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[87]) ).

thf(31,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( A @ singleton )
        = ( C @ ( B @ unordered_pair ) ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t8_zfmisc_1) ).

thf(347,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( A @ singleton )
        = ( C @ ( B @ unordered_pair ) ) )
     => ( A = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[31]) ).

thf(69,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( B @ ( A @ set_union2 ) )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t12_xboole_1) ).

thf(555,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( B @ ( A @ set_union2 ) )
        = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[69]) ).

thf(97,axiom,
    ! [A: $i] : ( A @ ( empty_set @ subset ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_xboole_1) ).

thf(683,plain,
    ! [A: $i] : ( A @ ( empty_set @ subset ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[97]) ).

thf(109,axiom,
    ! [A: $i,B: $i] :
      ( ( ( A @ empty )
       => ( ( A @ ( B @ element ) )
        <=> ( B @ empty ) ) )
      & ( ~ ( A @ empty )
       => ( ( A @ ( B @ element ) )
        <=> ( A @ ( B @ in ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_subset_1) ).

thf(730,plain,
    ! [A: $i,B: $i] :
      ( ( ( A @ empty )
       => ( ( ( B @ empty )
           => ( A @ ( B @ element ) ) )
          & ( ( A @ ( B @ element ) )
           => ( B @ empty ) ) ) )
      & ( ~ ( A @ empty )
       => ( ( ( A @ ( B @ in ) )
           => ( A @ ( B @ element ) ) )
          & ( ( A @ ( B @ element ) )
           => ( A @ ( B @ in ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[109]) ).

thf(50,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ ( A @ unordered_pair ) @ subset ) )
    <=> ( ( C @ ( B @ in ) )
        & ( C @ ( A @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t38_zfmisc_1) ).

thf(449,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( ( C @ ( B @ in ) )
          & ( C @ ( A @ in ) ) )
       => ( C @ ( B @ ( A @ unordered_pair ) @ subset ) ) )
      & ( ( C @ ( B @ ( A @ unordered_pair ) @ subset ) )
       => ( ( C @ ( B @ in ) )
          & ( C @ ( A @ in ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[50]) ).

thf(3,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ~ ( ( A != D )
        & ( A != C )
        & ( ( B @ ( A @ unordered_pair ) )
          = ( D @ ( C @ unordered_pair ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t10_zfmisc_1) ).

thf(120,plain,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ~ ( ( A != D )
        & ( A != C )
        & ( ( B @ ( A @ unordered_pair ) )
          = ( D @ ( C @ unordered_pair ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(14,axiom,
    ? [A: $i] : ( A @ empty ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(202,plain,
    ? [A: $i] : ( A @ empty ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[14]) ).

thf(81,axiom,
    ! [A: $i] :
      ( ~ ( A @ empty )
     => ? [B: $i] :
          ( ~ ( B @ empty )
          & ( A @ powerset @ ( B @ element ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc1_subset_1) ).

thf(597,plain,
    ! [A: $i] :
      ( ~ ( A @ empty )
     => ? [B: $i] :
          ( ~ ( B @ empty )
          & ( A @ powerset @ ( B @ element ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[81]) ).

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

thf(385,plain,
    ! [A: $i,B: $i] :
      ( ( ! [C: $i] :
            ( ( A @ ( C @ in ) )
           => ( B @ ( C @ in ) ) )
       => ( B @ ( A @ subset ) ) )
      & ( ( B @ ( A @ subset ) )
       => ! [C: $i] :
            ( ( A @ ( C @ in ) )
           => ( B @ ( C @ in ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[36]) ).

thf(67,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( B @ empty )
        & ( B @ ( A @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t7_boole) ).

thf(550,plain,
    ! [A: $i,B: $i] :
      ~ ( ( B @ empty )
        & ( B @ ( A @ in ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[67]) ).

thf(106,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ! [C: $i] :
          ( ( A @ powerset @ ( C @ element ) )
         => ( ( C @ ( B @ disjoint ) )
          <=> ( C @ ( A @ subset_complement ) @ ( B @ subset ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t43_subset_1) ).

thf(715,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ! [C: $i] :
          ( ( A @ powerset @ ( C @ element ) )
         => ( ( ( C @ ( A @ subset_complement ) @ ( B @ subset ) )
             => ( C @ ( B @ disjoint ) ) )
            & ( ( C @ ( B @ disjoint ) )
             => ( C @ ( A @ subset_complement ) @ ( B @ subset ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[106]) ).

thf(93,axiom,
    ! [A: $i] :
      ( ( A @ singleton )
     != empty_set ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l1_zfmisc_1) ).

thf(670,plain,
    ! [A: $i] :
      ( ( A @ singleton )
     != empty_set ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[93]) ).

thf(105,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ powerset @ ( A @ element ) )
    <=> ( B @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t3_subset) ).

thf(709,plain,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ subset ) )
       => ( B @ powerset @ ( A @ element ) ) )
      & ( ( B @ powerset @ ( A @ element ) )
       => ( B @ ( A @ subset ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[105]) ).

thf(46,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ singleton @ ( A @ singleton @ subset ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t6_zfmisc_1) ).

thf(436,plain,
    ! [A: $i,B: $i] :
      ( ( B @ singleton @ ( A @ singleton @ subset ) )
     => ( A = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[46]) ).

thf(89,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ powerset @ ( B @ element ) )
        & ( B @ ( A @ in ) ) )
     => ( C @ ( A @ element ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t4_subset) ).

thf(651,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ powerset @ ( B @ element ) )
        & ( B @ ( A @ in ) ) )
     => ( C @ ( A @ element ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[89]) ).

thf(74,axiom,
    ! [A: $i] :
      ( ( empty_set @ ( A @ subset ) )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t3_xboole_1) ).

thf(570,plain,
    ! [A: $i] :
      ( ( empty_set @ ( A @ subset ) )
     => ( A = empty_set ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[74]) ).

thf(107,axiom,
    ! [A: $i] :
    ? [B: $i] :
      ( ! [C: $i] :
          ~ ( ~ ( B @ ( C @ in ) )
            & ~ ( B @ ( C @ are_equipotent ) )
            & ( B @ ( C @ subset ) ) )
      & ! [C: $i] :
          ( ( B @ ( C @ in ) )
         => ( B @ ( C @ powerset @ in ) ) )
      & ! [C: $i,D: $i] :
          ( ( ( C @ ( D @ subset ) )
            & ( B @ ( C @ in ) ) )
         => ( B @ ( D @ in ) ) )
      & ( B @ ( A @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t136_zfmisc_1) ).

thf(719,plain,
    ! [A: $i] :
    ? [B: $i] :
      ( ! [C: $i] :
          ~ ( ~ ( B @ ( C @ in ) )
            & ~ ( B @ ( C @ are_equipotent ) )
            & ( B @ ( C @ subset ) ) )
      & ! [C: $i] :
          ( ( B @ ( C @ in ) )
         => ( B @ ( C @ powerset @ in ) ) )
      & ! [C: $i,D: $i] :
          ( ( ( C @ ( D @ subset ) )
            & ( B @ ( C @ in ) ) )
         => ( B @ ( D @ in ) ) )
      & ( B @ ( A @ in ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[107]) ).

thf(83,axiom,
    ! [A: $i] :
      ~ ( A @ powerset @ empty ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc1_subset_1) ).

thf(619,plain,
    ! [A: $i] :
      ~ ( A @ powerset @ empty ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[83]) ).

thf(30,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ ( A @ set_union2 ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(344,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_union2 ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[30]) ).

thf(13,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( B @ ( C @ cartesian_product2 ) @ ( A @ ( C @ cartesian_product2 ) @ subset ) )
        & ( C @ ( B @ cartesian_product2 ) @ ( C @ ( A @ cartesian_product2 ) @ subset ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t118_zfmisc_1) ).

thf(196,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( B @ ( C @ cartesian_product2 ) @ ( A @ ( C @ cartesian_product2 ) @ subset ) )
        & ( C @ ( B @ cartesian_product2 ) @ ( C @ ( A @ cartesian_product2 ) @ subset ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[13]) ).

thf(64,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( B @ union @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l50_zfmisc_1) ).

thf(542,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( B @ union @ ( A @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[64]) ).

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

thf(221,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( A @ ( B @ subset ) )
          & ( B @ ( A @ subset ) ) )
       => ( A = B ) )
      & ( ( A = B )
       => ( ( A @ ( B @ subset ) )
          & ( B @ ( A @ subset ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[20]) ).

thf(38,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( B @ ( A @ set_intersection2 ) )
        = A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t28_xboole_1) ).

thf(396,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( B @ ( A @ set_intersection2 ) )
        = A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[38]) ).

thf(23,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( A @ union ) )
    <=> ! [C: $i] :
          ( ( B @ ( C @ in ) )
        <=> ? [D: $i] :
              ( ( A @ ( D @ in ) )
              & ( D @ ( C @ in ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d4_tarski) ).

thf(265,plain,
    ! [A: $i,B: $i] :
      ( ( ! [C: $i] :
            ( ( ? [D: $i] :
                  ( ( A @ ( D @ in ) )
                  & ( D @ ( C @ in ) ) )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ? [D: $i] :
                  ( ( A @ ( D @ in ) )
                  & ( D @ ( C @ in ) ) ) ) )
       => ( B
          = ( A @ union ) ) )
      & ( ( B
          = ( A @ union ) )
       => ! [C: $i] :
            ( ( ? [D: $i] :
                  ( ( A @ ( D @ in ) )
                  & ( D @ ( C @ in ) ) )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ? [D: $i] :
                  ( ( A @ ( D @ in ) )
                  & ( D @ ( C @ in ) ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[23]) ).

thf(60,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( B @ union @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t92_zfmisc_1) ).

thf(507,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( B @ union @ ( A @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[60]) ).

thf(24,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ~ ( A @ ( B @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(292,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ~ ( A @ ( B @ in ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[24]) ).

thf(21,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( A @ singleton ) )
    <=> ! [C: $i] :
          ( ( B @ ( C @ in ) )
        <=> ( C = A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d1_tarski) ).

thf(233,plain,
    ! [A: $i,B: $i] :
      ( ( ! [C: $i] :
            ( ( ( C = A )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ( C = A ) ) )
       => ( B
          = ( A @ singleton ) ) )
      & ( ( B
          = ( A @ singleton ) )
       => ! [C: $i] :
            ( ( ( C = A )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ( C = A ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[21]) ).

thf(34,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ disjoint ) )
     => ( A @ ( B @ disjoint ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',symmetry_r1_xboole_0) ).

thf(381,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ disjoint ) )
     => ( A @ ( B @ disjoint ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[34]) ).

thf(62,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( B @ ( A @ set_union2 ) @ empty ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(512,plain,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( B @ ( A @ set_union2 ) @ empty ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[62]) ).

thf(47,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ ( B @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( C @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_xboole_1) ).

thf(439,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ ( B @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( C @ ( A @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[47]) ).

thf(71,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_union2 ) )
      = ( A @ ( B @ set_union2 ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_xboole_0) ).

thf(561,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_union2 ) )
      = ( A @ ( B @ set_union2 ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[71]) ).

thf(26,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ singleton @ subset ) )
    <=> ( B @ ( A @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t37_zfmisc_1) ).

thf(297,plain,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ in ) )
       => ( B @ ( A @ singleton @ subset ) ) )
      & ( ( B @ ( A @ singleton @ subset ) )
       => ( B @ ( A @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[26]) ).

thf(12,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( B @ empty )
        & ( A != B )
        & ( A @ empty ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t8_boole) ).

thf(192,plain,
    ! [A: $i,B: $i] :
      ~ ( ( B @ empty )
        & ( A != B )
        & ( A @ empty ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[12]) ).

thf(101,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( A @ powerset @ ( C @ element ) )
     => ~ ( ( C @ ( B @ in ) )
          & ( C @ ( A @ subset_complement ) @ ( B @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t54_subset_1) ).

thf(693,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( A @ powerset @ ( C @ element ) )
     => ~ ( ( C @ ( B @ in ) )
          & ( C @ ( A @ subset_complement ) @ ( B @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[101]) ).

thf(85,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ singleton @ ( A @ subset ) )
    <=> ( ( A
          = ( B @ singleton ) )
        | ( A = empty_set ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t39_zfmisc_1) ).

thf(625,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( A
            = ( B @ singleton ) )
          | ( A = empty_set ) )
       => ( B @ singleton @ ( A @ subset ) ) )
      & ( ( B @ singleton @ ( A @ subset ) )
       => ( ( A
            = ( B @ singleton ) )
          | ( A = empty_set ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[85]) ).

thf(51,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ disjoint ) )
    <=> ( ( B @ ( A @ set_difference ) )
        = A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t83_xboole_1) ).

thf(456,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( B @ ( A @ set_difference ) )
          = A )
       => ( B @ ( A @ disjoint ) ) )
      & ( ( B @ ( A @ disjoint ) )
       => ( ( B @ ( A @ set_difference ) )
          = A ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[51]) ).

thf(111,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( A @ powerset ) )
    <=> ! [C: $i] :
          ( ( B @ ( C @ in ) )
        <=> ( A @ ( C @ subset ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d1_zfmisc_1) ).

thf(742,plain,
    ! [A: $i,B: $i] :
      ( ( ! [C: $i] :
            ( ( ( A @ ( C @ subset ) )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ( A @ ( C @ subset ) ) ) )
       => ( B
          = ( A @ powerset ) ) )
      & ( ( B
          = ( A @ powerset ) )
       => ! [C: $i] :
            ( ( ( A @ ( C @ subset ) )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ( A @ ( C @ subset ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[111]) ).

thf(103,axiom,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( A @ ( C @ in ) )
         => ( B @ ( C @ in ) ) )
     => ( B @ powerset @ ( A @ element ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l71_subset_1) ).

thf(697,plain,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( A @ ( C @ in ) )
         => ( B @ ( C @ in ) ) )
     => ( B @ powerset @ ( A @ element ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[103]) ).

thf(29,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
    <=> ! [D: $i] :
          ( ( C @ ( D @ in ) )
        <=> ( ( D = B )
            | ( D = A ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_tarski) ).

thf(317,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ! [D: $i] :
            ( ( ( ( D = B )
                | ( D = A ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( D = B )
                | ( D = A ) ) ) )
       => ( C
          = ( B @ ( A @ unordered_pair ) ) ) )
      & ( ( C
          = ( B @ ( A @ unordered_pair ) ) )
       => ! [D: $i] :
            ( ( ( ( D = B )
                | ( D = A ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( D = B )
                | ( D = A ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[29]) ).

thf(7,axiom,
    ! [A: $i,B: $i] :
      ~ ( A @ ( A @ proper_subset ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',irreflexivity_r2_xboole_0) ).

thf(141,plain,
    ! [A: $i] :
      ~ ( A @ ( A @ proper_subset ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(55,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ ( B @ set_difference ) @ ( A @ set_union2 ) )
      = ( B @ ( A @ set_union2 ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t39_xboole_1) ).

thf(471,plain,
    ! [A: $i,B: $i] :
      ( ( A @ ( B @ set_difference ) @ ( A @ set_union2 ) )
      = ( B @ ( A @ set_union2 ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[55]) ).

thf(4,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

thf(124,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).

thf(66,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( C @ ( B @ set_intersection2 ) @ ( C @ ( A @ set_intersection2 ) @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t26_xboole_1) ).

thf(547,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( C @ ( B @ set_intersection2 ) @ ( C @ ( A @ set_intersection2 ) @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[66]) ).

thf(18,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( ( B @ ( A @ disjoint ) )
          & ? [C: $i] : ( B @ ( A @ set_intersection2 ) @ ( C @ in ) ) )
      & ~ ( ! [C: $i] :
              ~ ( B @ ( A @ set_intersection2 ) @ ( C @ in ) )
          & ~ ( B @ ( A @ disjoint ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t4_xboole_0) ).

thf(212,plain,
    ! [A: $i,B: $i] :
      ( ~ ( ( B @ ( A @ disjoint ) )
          & ? [C: $i] : ( B @ ( A @ set_intersection2 ) @ ( C @ in ) ) )
      & ~ ( ! [C: $i] :
              ~ ( B @ ( A @ set_intersection2 ) @ ( C @ in ) )
          & ~ ( B @ ( A @ disjoint ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[18]) ).

thf(84,axiom,
    ! [A: $i] :
      ( ( A @ powerset @ union )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t99_zfmisc_1) ).

thf(622,plain,
    ! [A: $i] :
      ( ( A @ powerset @ union )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[84]) ).

thf(37,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( ( B @ ( A @ singleton @ set_union2 ) )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t46_zfmisc_1) ).

thf(393,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( ( B @ ( A @ singleton @ set_union2 ) )
        = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[37]) ).

thf(104,axiom,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ set_difference ) )
        = empty_set )
    <=> ( B @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t37_xboole_1) ).

thf(701,plain,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ subset ) )
       => ( ( B @ ( A @ set_difference ) )
          = empty_set ) )
      & ( ( ( B @ ( A @ set_difference ) )
          = empty_set )
       => ( B @ ( A @ subset ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[104]) ).

thf(63,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( B @ ( A @ set_difference ) ) )
    <=> ! [D: $i] :
          ( ( C @ ( D @ in ) )
        <=> ( ~ ( B @ ( D @ in ) )
            & ( A @ ( D @ in ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d4_xboole_0) ).

thf(515,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ! [D: $i] :
            ( ( ( ~ ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ~ ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) ) ) )
       => ( C
          = ( B @ ( A @ set_difference ) ) ) )
      & ( ( C
          = ( B @ ( A @ set_difference ) ) )
       => ! [D: $i] :
            ( ( ( ~ ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ~ ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[63]) ).

thf(58,axiom,
    ! [A: $i,B: $i] : ( A @ ( A @ subset ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',reflexivity_r1_tarski) ).

thf(503,plain,
    ! [A: $i] : ( A @ ( A @ subset ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[58]) ).

thf(6,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( D @ ( C @ cartesian_product2 ) @ ( B @ ( A @ ordered_pair ) @ in ) )
    <=> ( ( D @ ( B @ in ) )
        & ( C @ ( A @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t106_zfmisc_1) ).

thf(134,plain,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( ( D @ ( B @ in ) )
          & ( C @ ( A @ in ) ) )
       => ( D @ ( C @ cartesian_product2 ) @ ( B @ ( A @ ordered_pair ) @ in ) ) )
      & ( ( D @ ( C @ cartesian_product2 ) @ ( B @ ( A @ ordered_pair ) @ in ) )
       => ( ( D @ ( B @ in ) )
          & ( C @ ( A @ in ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).

thf(70,axiom,
    ! [A: $i] :
      ( ( A @ ( A @ unordered_pair ) )
      = ( A @ singleton ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t69_enumset1) ).

thf(558,plain,
    ! [A: $i] :
      ( ( A @ ( A @ unordered_pair ) )
      = ( A @ singleton ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[70]) ).

thf(94,axiom,
    ( ( empty_set @ powerset )
    = ( empty_set @ singleton ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_zfmisc_1) ).

thf(674,plain,
    ( ( empty_set @ powerset )
    = ( empty_set @ singleton ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[94]) ).

thf(42,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( B @ ( A @ set_union2 ) @ set_difference ) )
      = ( B @ ( A @ set_difference ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t40_xboole_1) ).

thf(412,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( B @ ( A @ set_union2 ) @ set_difference ) )
      = ( B @ ( A @ set_difference ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[42]) ).

thf(75,axiom,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ set_difference ) )
        = empty_set )
    <=> ( B @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l32_xboole_1) ).

thf(573,plain,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ subset ) )
       => ( ( B @ ( A @ set_difference ) )
          = empty_set ) )
      & ( ( ( B @ ( A @ set_difference ) )
          = empty_set )
       => ( B @ ( A @ subset ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[75]) ).

thf(10,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( B @ ( A @ cartesian_product2 ) ) )
    <=> ! [D: $i] :
          ( ( C @ ( D @ in ) )
        <=> ? [E: $i,F: $i] :
              ( ( D
                = ( F @ ( E @ ordered_pair ) ) )
              & ( B @ ( F @ in ) )
              & ( A @ ( E @ in ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_zfmisc_1) ).

thf(149,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ! [D: $i] :
            ( ( ? [E: $i,F: $i] :
                  ( ( D
                    = ( F @ ( E @ ordered_pair ) ) )
                  & ( B @ ( F @ in ) )
                  & ( A @ ( E @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ? [E: $i,F: $i] :
                  ( ( D
                    = ( F @ ( E @ ordered_pair ) ) )
                  & ( B @ ( F @ in ) )
                  & ( A @ ( E @ in ) ) ) ) )
       => ( C
          = ( B @ ( A @ cartesian_product2 ) ) ) )
      & ( ( C
          = ( B @ ( A @ cartesian_product2 ) ) )
       => ! [D: $i] :
            ( ( ? [E: $i,F: $i] :
                  ( ( D
                    = ( F @ ( E @ ordered_pair ) ) )
                  & ( B @ ( F @ in ) )
                  & ( A @ ( E @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ? [E: $i,F: $i] :
                  ( ( D
                    = ( F @ ( E @ ordered_pair ) ) )
                  & ( B @ ( F @ in ) )
                  & ( A @ ( E @ in ) ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[10]) ).

thf(82,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ! [C: $i] :
          ( ( A @ powerset @ powerset @ ( C @ element ) )
         => ( ( C
              = ( B @ ( A @ complements_of_subsets ) ) )
          <=> ! [D: $i] :
                ( ( A @ powerset @ ( D @ element ) )
               => ( ( C @ ( D @ in ) )
                <=> ( B @ ( D @ ( A @ subset_complement ) @ in ) ) ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d8_setfam_1) ).

thf(601,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ! [C: $i] :
          ( ( A @ powerset @ powerset @ ( C @ element ) )
         => ( ( ! [D: $i] :
                  ( ( A @ powerset @ ( D @ element ) )
                 => ( ( ( B @ ( D @ ( A @ subset_complement ) @ in ) )
                     => ( C @ ( D @ in ) ) )
                    & ( ( C @ ( D @ in ) )
                     => ( B @ ( D @ ( A @ subset_complement ) @ in ) ) ) ) )
             => ( C
                = ( B @ ( A @ complements_of_subsets ) ) ) )
            & ( ( C
                = ( B @ ( A @ complements_of_subsets ) ) )
             => ! [D: $i] :
                  ( ( A @ powerset @ ( D @ element ) )
                 => ( ( ( B @ ( D @ ( A @ subset_complement ) @ in ) )
                     => ( C @ ( D @ in ) ) )
                    & ( ( C @ ( D @ in ) )
                     => ( B @ ( D @ ( A @ subset_complement ) @ in ) ) ) ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[82]) ).

thf(77,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ disjoint ) )
    <=> ( ( B @ ( A @ set_intersection2 ) )
        = empty_set ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d7_xboole_0) ).

thf(584,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( B @ ( A @ set_intersection2 ) )
          = empty_set )
       => ( B @ ( A @ disjoint ) ) )
      & ( ( B @ ( A @ disjoint ) )
       => ( ( B @ ( A @ set_intersection2 ) )
          = empty_set ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[77]) ).

thf(44,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ proper_subset ) )
    <=> ( ( A != B )
        & ( B @ ( A @ subset ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d8_xboole_0) ).

thf(423,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( A != B )
          & ( B @ ( A @ subset ) ) )
       => ( B @ ( A @ proper_subset ) ) )
      & ( ( B @ ( A @ proper_subset ) )
       => ( ( A != B )
          & ( B @ ( A @ subset ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[44]) ).

thf(40,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ ( A @ set_intersection2 ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',idempotence_k3_xboole_0) ).

thf(402,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_intersection2 ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[40]) ).

thf(15,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( A @ ( B @ proper_subset ) )
        & ( B @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t60_xboole_1) ).

thf(204,plain,
    ! [A: $i,B: $i] :
      ~ ( ( A @ ( B @ proper_subset ) )
        & ( B @ ( A @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[15]) ).

thf(8,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ proper_subset ) )
     => ~ ( A @ ( B @ proper_subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',antisymmetry_r2_xboole_0) ).

thf(144,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ proper_subset ) )
     => ~ ( A @ ( B @ proper_subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).

thf(53,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( B @ ( A @ in ) )
        & ( B @ ( A @ singleton @ disjoint ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l25_zfmisc_1) ).

thf(466,plain,
    ! [A: $i,B: $i] :
      ~ ( ( B @ ( A @ in ) )
        & ( B @ ( A @ singleton @ disjoint ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[53]) ).

thf(1,conjecture,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ~ ( ( ( B @ ( A @ complements_of_subsets ) )
            = empty_set )
          & ( B != empty_set ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t46_setfam_1) ).

thf(2,negated_conjecture,
    ~ ! [A: $i,B: $i] :
        ( ( A @ powerset @ powerset @ ( B @ element ) )
       => ~ ( ( ( B @ ( A @ complements_of_subsets ) )
              = empty_set )
            & ( B != empty_set ) ) ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(113,plain,
    ~ ! [A: $i,B: $i] :
        ( ( A @ powerset @ powerset @ ( B @ element ) )
       => ~ ( ( ( B @ ( A @ complements_of_subsets ) )
              = empty_set )
            & ( B != empty_set ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(73,axiom,
    ! [A: $i] :
      ( ( empty_set @ ( A @ set_union2 ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_boole) ).

thf(567,plain,
    ! [A: $i] :
      ( ( empty_set @ ( A @ set_union2 ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[73]) ).

thf(61,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( A @ singleton )
        = ( C @ ( B @ unordered_pair ) ) )
     => ( B = C ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t9_zfmisc_1) ).

thf(509,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( A @ singleton )
        = ( C @ ( B @ unordered_pair ) ) )
     => ( B = C ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[61]) ).

thf(27,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( C @ singleton @ ( B @ set_difference ) @ ( A @ subset ) )
        | ( A @ ( C @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l3_zfmisc_1) ).

thf(303,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( ( C @ singleton @ ( B @ set_difference ) @ ( A @ subset ) )
        | ( A @ ( C @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[27]) ).

thf(98,axiom,
    ! [A: $i] :
      ( ( A @ ( empty_set @ set_difference ) )
      = empty_set ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t4_boole) ).

thf(685,plain,
    ! [A: $i] :
      ( ( A @ ( empty_set @ set_difference ) )
      = empty_set ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[98]) ).

thf(39,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_difference ) @ ( A @ set_difference ) )
      = ( B @ ( A @ set_intersection2 ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t48_xboole_1) ).

thf(399,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_difference ) @ ( A @ set_difference ) )
      = ( B @ ( A @ set_intersection2 ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[39]) ).

thf(28,axiom,
    ! [A: $i] :
    ? [B: $i] :
      ( ! [C: $i] :
          ~ ( ~ ( B @ ( C @ in ) )
            & ~ ( B @ ( C @ are_equipotent ) )
            & ( B @ ( C @ subset ) ) )
      & ! [C: $i] :
          ~ ( ! [D: $i] :
                ~ ( ! [E: $i] :
                      ( ( C @ ( E @ subset ) )
                     => ( D @ ( E @ in ) ) )
                  & ( B @ ( D @ in ) ) )
            & ( B @ ( C @ in ) ) )
      & ! [C: $i,D: $i] :
          ( ( ( C @ ( D @ subset ) )
            & ( B @ ( C @ in ) ) )
         => ( B @ ( D @ in ) ) )
      & ( B @ ( A @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t9_tarski) ).

thf(306,plain,
    ! [A: $i] :
    ? [B: $i] :
      ( ! [C: $i] :
          ~ ( ~ ( B @ ( C @ in ) )
            & ~ ( B @ ( C @ are_equipotent ) )
            & ( B @ ( C @ subset ) ) )
      & ! [C: $i] :
          ~ ( ! [D: $i] :
                ~ ( ! [E: $i] :
                      ( ( C @ ( E @ subset ) )
                     => ( D @ ( E @ in ) ) )
                  & ( B @ ( D @ in ) ) )
            & ( B @ ( C @ in ) ) )
      & ! [C: $i,D: $i] :
          ( ( ( C @ ( D @ subset ) )
            & ( B @ ( C @ in ) ) )
         => ( B @ ( D @ in ) ) )
      & ( B @ ( A @ in ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[28]) ).

thf(59,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ ( B @ disjoint ) )
        & ( B @ ( A @ subset ) ) )
     => ( C @ ( A @ disjoint ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t63_xboole_1) ).

thf(505,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ ( B @ disjoint ) )
        & ( B @ ( A @ subset ) ) )
     => ( C @ ( A @ disjoint ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[59]) ).

thf(90,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ( ( B @ ( A @ complements_of_subsets ) @ ( A @ complements_of_subsets ) )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',involutiveness_k7_setfam_1) ).

thf(653,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ( ( B @ ( A @ complements_of_subsets ) @ ( A @ complements_of_subsets ) )
        = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[90]) ).

thf(86,axiom,
    ! [A: $i] :
      ( ( A = empty_set )
    <=> ! [B: $i] :
          ~ ( A @ ( B @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d1_xboole_0) ).

thf(636,plain,
    ! [A: $i] :
      ( ( ! [B: $i] :
            ~ ( A @ ( B @ in ) )
       => ( A = empty_set ) )
      & ( ( A = empty_set )
       => ! [B: $i] :
            ~ ( A @ ( B @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[86]) ).

thf(102,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ( A @ powerset @ powerset @ ( B @ ( A @ complements_of_subsets ) @ element ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k7_setfam_1) ).

thf(695,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ powerset @ ( B @ element ) )
     => ( A @ powerset @ powerset @ ( B @ ( A @ complements_of_subsets ) @ element ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[102]) ).

thf(96,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ( ( B @ ( A @ subset_complement ) )
        = ( B @ ( A @ set_difference ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d5_subset_1) ).

thf(680,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ( ( B @ ( A @ subset_complement ) )
        = ( B @ ( A @ set_difference ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[96]) ).

thf(68,axiom,
    ! [A: $i,B: $i] : ( A @ ( B @ ( A @ set_difference ) @ subset ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t36_xboole_1) ).

thf(553,plain,
    ! [A: $i,B: $i] : ( A @ ( B @ ( A @ set_difference ) @ subset ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[68]) ).

thf(88,axiom,
    ! [A: $i] :
      ( ( empty_set @ ( A @ set_difference ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t3_boole) ).

thf(648,plain,
    ! [A: $i] :
      ( ( empty_set @ ( A @ set_difference ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[88]) ).

thf(17,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( A @ ( B @ set_union2 ) @ empty ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(209,plain,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( A @ ( B @ set_union2 ) @ empty ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[17]) ).

thf(11,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( B @ ( A @ ordered_pair ) )
        = ( D @ ( C @ ordered_pair ) ) )
     => ( ( B = D )
        & ( A = C ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t33_zfmisc_1) ).

thf(182,plain,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( B @ ( A @ ordered_pair ) )
        = ( D @ ( C @ ordered_pair ) ) )
     => ( ( B = D )
        & ( A = C ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[11]) ).

thf(48,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ singleton @ subset ) )
    <=> ( B @ ( A @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l2_zfmisc_1) ).

thf(441,plain,
    ! [A: $i,B: $i] :
      ( ( ( B @ ( A @ in ) )
       => ( B @ ( A @ singleton @ subset ) ) )
      & ( ( B @ ( A @ singleton @ subset ) )
       => ( B @ ( A @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[48]) ).

thf(5,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( D @ ( C @ cartesian_product2 ) @ ( B @ ( A @ ordered_pair ) @ in ) )
    <=> ( ( D @ ( B @ in ) )
        & ( C @ ( A @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l55_zfmisc_1) ).

thf(127,plain,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( ( D @ ( B @ in ) )
          & ( C @ ( A @ in ) ) )
       => ( D @ ( C @ cartesian_product2 ) @ ( B @ ( A @ ordered_pair ) @ in ) ) )
      & ( ( D @ ( C @ cartesian_product2 ) @ ( B @ ( A @ ordered_pair ) @ in ) )
       => ( ( D @ ( B @ in ) )
          & ( C @ ( A @ in ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(65,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( ( B @ ( A @ singleton @ set_union2 ) )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l23_zfmisc_1) ).

thf(544,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( ( B @ ( A @ singleton @ set_union2 ) )
        = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[65]) ).

thf(91,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ( ( B @ ( A @ subset_complement ) @ ( A @ subset_complement ) )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',involutiveness_k3_subset_1) ).

thf(656,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ( ( B @ ( A @ subset_complement ) @ ( A @ subset_complement ) )
        = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[91]) ).

thf(80,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ element ) )
     => ( ( B @ ( A @ in ) )
        | ( B @ empty ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_subset) ).

thf(595,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ element ) )
     => ( ( B @ ( A @ in ) )
        | ( B @ empty ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[80]) ).

thf(99,axiom,
    ! [A: $i] :
    ? [B: $i] : ( A @ ( B @ element ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',existence_m1_subset_1) ).

thf(688,plain,
    ! [A: $i] :
    ? [B: $i] : ( A @ ( B @ element ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[99]) ).

thf(76,axiom,
    ! [A: $i,B: $i,C: $i] :
      ~ ( ( C @ empty )
        & ( C @ powerset @ ( B @ element ) )
        & ( B @ ( A @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t5_subset) ).

thf(581,plain,
    ! [A: $i,B: $i,C: $i] :
      ~ ( ( C @ empty )
        & ( C @ powerset @ ( B @ element ) )
        & ( B @ ( A @ in ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[76]) ).

thf(19,axiom,
    ? [A: $i] :
      ~ ( A @ empty ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(218,plain,
    ? [A: $i] :
      ~ ( A @ empty ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[19]) ).

thf(33,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_intersection2 ) )
      = ( A @ ( B @ set_intersection2 ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k3_xboole_0) ).

thf(378,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_intersection2 ) )
      = ( A @ ( B @ set_intersection2 ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[33]) ).

thf(45,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( C @ ( B @ set_difference ) @ ( C @ ( A @ set_difference ) @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t33_xboole_1) ).

thf(433,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( B @ ( A @ subset ) )
     => ( C @ ( B @ set_difference ) @ ( C @ ( A @ set_difference ) @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[45]) ).

thf(16,axiom,
    ! [A: $i,B: $i] : ( B @ ( A @ set_union2 ) @ ( A @ subset ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t7_xboole_1) ).

thf(207,plain,
    ! [A: $i,B: $i] : ( B @ ( A @ set_union2 ) @ ( A @ subset ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[16]) ).

thf(112,axiom,
    ! [A: $i] :
      ( ( empty_set @ ( A @ set_intersection2 ) )
      = empty_set ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_boole) ).

thf(763,plain,
    ! [A: $i] :
      ( ( empty_set @ ( A @ set_intersection2 ) )
      = empty_set ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[112]) ).

thf(35,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ ( A @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( C @ ( B @ set_intersection2 ) @ ( A @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t19_xboole_1) ).

thf(383,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ ( A @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( C @ ( B @ set_intersection2 ) @ ( A @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[35]) ).

thf(49,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( B @ ( C @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( B @ ( C @ ( A @ set_union2 ) @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t8_xboole_1) ).

thf(447,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( B @ ( C @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( B @ ( C @ ( A @ set_union2 ) @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[49]) ).

thf(9,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ ordered_pair ) )
      = ( A @ singleton @ ( B @ ( A @ unordered_pair ) @ unordered_pair ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d5_tarski) ).

thf(146,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ ordered_pair ) )
      = ( A @ singleton @ ( B @ ( A @ unordered_pair ) @ unordered_pair ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).

thf(41,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( ( B @ ( A @ disjoint ) )
          & ? [C: $i] :
              ( ( B @ ( C @ in ) )
              & ( A @ ( C @ in ) ) ) )
      & ~ ( ! [C: $i] :
              ~ ( ( B @ ( C @ in ) )
                & ( A @ ( C @ in ) ) )
          & ~ ( B @ ( A @ disjoint ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t3_xboole_0) ).

thf(405,plain,
    ! [A: $i,B: $i] :
      ( ~ ( ( B @ ( A @ disjoint ) )
          & ? [C: $i] :
              ( ( B @ ( C @ in ) )
              & ( A @ ( C @ in ) ) ) )
      & ~ ( ! [C: $i] :
              ~ ( ( B @ ( C @ in ) )
                & ( A @ ( C @ in ) ) )
          & ~ ( B @ ( A @ disjoint ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[41]) ).

thf(72,axiom,
    ! [A: $i,B: $i] :
      ~ ( B @ ( A @ ordered_pair ) @ empty ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc1_zfmisc_1) ).

thf(564,plain,
    ! [A: $i,B: $i] :
      ~ ( B @ ( A @ ordered_pair ) @ empty ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[72]) ).

thf(25,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ subset ) )
     => ( B
        = ( A @ ( B @ set_difference ) @ ( A @ set_union2 ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t45_xboole_1) ).

thf(294,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ subset ) )
     => ( B
        = ( A @ ( B @ set_difference ) @ ( A @ set_union2 ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[25]) ).

thf(56,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( B @ ( A @ set_intersection2 ) ) )
    <=> ! [D: $i] :
          ( ( C @ ( D @ in ) )
        <=> ( ( B @ ( D @ in ) )
            & ( A @ ( D @ in ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d3_xboole_0) ).

thf(474,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ! [D: $i] :
            ( ( ( ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) ) ) )
       => ( C
          = ( B @ ( A @ set_intersection2 ) ) ) )
      & ( ( C
          = ( B @ ( A @ set_intersection2 ) ) )
       => ! [D: $i] :
            ( ( ( ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( B @ ( D @ in ) )
                & ( A @ ( D @ in ) ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[56]) ).

thf(43,axiom,
    ! [A: $i,B: $i] :
      ( ( ( B @ singleton @ ( A @ set_difference ) )
        = A )
    <=> ~ ( A @ ( B @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t65_zfmisc_1) ).

thf(415,plain,
    ! [A: $i,B: $i] :
      ( ( ~ ( A @ ( B @ in ) )
       => ( ( B @ singleton @ ( A @ set_difference ) )
          = A ) )
      & ( ( ( B @ singleton @ ( A @ set_difference ) )
          = A )
       => ~ ( A @ ( B @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[43]) ).

thf(52,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( D @ ( C @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( D @ ( B @ cartesian_product2 ) @ ( C @ ( A @ cartesian_product2 ) @ subset ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t119_zfmisc_1) ).

thf(464,plain,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( D @ ( C @ subset ) )
        & ( B @ ( A @ subset ) ) )
     => ( D @ ( B @ cartesian_product2 ) @ ( C @ ( A @ cartesian_product2 ) @ subset ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[52]) ).

thf(57,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( B @ ( A @ in ) )
     => ( B @ ( A @ singleton @ disjoint ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l28_zfmisc_1) ).

thf(501,plain,
    ! [A: $i,B: $i] :
      ( ~ ( B @ ( A @ in ) )
     => ( B @ ( A @ singleton @ disjoint ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[57]) ).

thf(108,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ( A @ powerset @ ( B @ ( A @ subset_complement ) @ element ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',dt_k3_subset_1) ).

thf(728,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ( A @ powerset @ ( B @ ( A @ subset_complement ) @ element ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[108]) ).

thf(110,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ! [C: $i] :
          ( ( B @ ( C @ in ) )
         => ( A @ ( C @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l3_subset_1) ).

thf(740,plain,
    ! [A: $i,B: $i] :
      ( ( A @ powerset @ ( B @ element ) )
     => ! [C: $i] :
          ( ( B @ ( C @ in ) )
         => ( A @ ( C @ in ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[110]) ).

thf(22,axiom,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( A @ ( C @ in ) )
        <=> ( B @ ( C @ in ) ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_tarski) ).

thf(254,plain,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( ( B @ ( C @ in ) )
           => ( A @ ( C @ in ) ) )
          & ( ( A @ ( C @ in ) )
           => ( B @ ( C @ in ) ) ) )
     => ( A = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[22]) ).

thf(54,axiom,
    ! [A: $i,B: $i] : ( A @ ( B @ ( A @ set_intersection2 ) @ subset ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t17_xboole_1) ).

thf(469,plain,
    ! [A: $i,B: $i] : ( A @ ( B @ ( A @ set_intersection2 ) @ subset ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[54]) ).

thf(92,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ singleton @ ( A @ subset ) )
    <=> ( ( A
          = ( B @ singleton ) )
        | ( A = empty_set ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l4_zfmisc_1) ).

thf(659,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( A
            = ( B @ singleton ) )
          | ( A = empty_set ) )
       => ( B @ singleton @ ( A @ subset ) ) )
      & ( ( B @ singleton @ ( A @ subset ) )
       => ( ( A
            = ( B @ singleton ) )
          | ( A = empty_set ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[92]) ).

thf(95,axiom,
    ! [A: $i] :
    ? [B: $i] :
      ( ( B @ empty )
      & ( A @ powerset @ ( B @ element ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc2_subset_1) ).

thf(676,plain,
    ! [A: $i] :
    ? [B: $i] :
      ( ( B @ empty )
      & ( A @ powerset @ ( B @ element ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[95]) ).

thf(78,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( B @ ( A @ element ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_subset) ).

thf(592,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ( B @ ( A @ element ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[78]) ).

thf(782,plain,
    $false,
    inference(e,[status(thm)],[594,690,351,645,347,555,683,730,449,120,202,597,385,550,715,670,709,436,651,570,719,619,344,196,542,221,396,265,507,292,233,381,512,439,561,297,192,693,625,456,742,697,317,141,471,124,547,212,622,393,701,515,503,134,558,674,412,573,149,601,584,423,402,204,144,466,113,567,509,303,685,399,306,505,653,636,695,680,553,648,209,182,441,127,544,656,595,688,581,218,378,433,207,763,383,447,146,405,564,294,474,415,464,501,728,740,254,469,659,676,592]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02  % Problem  : SEU174+2 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.07  % Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 0.13/0.40  % Computer : n005.cluster.edu
% 0.13/0.40  % Model    : x86_64 x86_64
% 0.13/0.40  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.40  % Memory   : 8046.5625MB
% 0.13/0.40  % OS       : Linux 6.8.0-71-generic
% 0.13/0.40  % CPULimit : 300
% 0.13/0.40  % WCLimit  : 300
% 0.13/0.40  % DateTime : Sat Sep 26 08:44:32 UTC 2026
% 0.13/0.40  % CPUTime  : 
% 0.13/0.40  Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 0.89/0.99  % [INFO] 	 Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ... 
% 1.47/1.24  % [INFO] 	 Parsing done (248ms). 
% 1.47/1.26  % [INFO] 	 Running in sequential loop mode. 
% 2.36/1.66  % [INFO] 	 eprover registered as external prover. 
% 2.36/1.67  % [INFO] 	 Scanning for conjecture ... 
% 2.80/1.80  % [INFO] 	 Found a conjecture (or negated_conjecture) and 121 axioms. Running axiom selection ... 
% 3.01/1.91  % [INFO] 	 Axiom selection finished. Selected 110 axioms (removed 11 axioms). 
% 3.41/2.04  % [INFO] 	 Problem is first-order (TPTP FOF). 
% 3.41/2.06  % [INFO] 	 Type checking passed. 
% 3.41/2.07  % [CONFIG] 	 Using configuration: timeout(300) with strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>.  Searching for refutation ... 
% 8.55/3.77  % External prover 'e' found a proof!
% 8.55/3.77  % [INFO] 	 Killing All external provers ... 
% 8.55/3.77  % Time passed: 3221ms (effective reasoning time: 2505ms)
% 8.55/3.77  % Solved by strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>
% 8.55/3.77  % Axioms used in derivation (110): t2_boole, t9_zfmisc_1, rc1_subset_1, involutiveness_k7_setfam_1, t19_xboole_1, t17_xboole_1, t43_subset_1, fc1_zfmisc_1, d1_tarski, idempotence_k3_xboole_0, t1_boole, t3_xboole_1, fc1_xboole_0, d5_tarski, t1_subset, l3_subset_1, t99_zfmisc_1, t37_xboole_1, commutativity_k3_xboole_0, d2_tarski, involutiveness_k3_subset_1, fc2_xboole_0, d1_xboole_0, l50_zfmisc_1, t118_zfmisc_1, t46_zfmisc_1, t6_boole, rc2_subset_1, t1_xboole_1, commutativity_k2_xboole_0, t5_subset, t4_xboole_0, l25_zfmisc_1, t1_zfmisc_1, d8_xboole_0, t2_tarski, t33_xboole_1, l32_xboole_1, t8_zfmisc_1, t4_boole, t4_subset, fc3_xboole_0, d2_xboole_0, d4_tarski, t7_boole, d2_subset_1, t48_xboole_1, fc1_subset_1, t33_zfmisc_1, d7_xboole_0, t83_xboole_1, l28_zfmisc_1, l4_zfmisc_1, t3_subset, antisymmetry_r2_xboole_0, d2_zfmisc_1, existence_m1_subset_1, l3_zfmisc_1, commutativity_k2_tarski, t106_zfmisc_1, l2_zfmisc_1, l71_subset_1, d5_subset_1, t92_zfmisc_1, d1_zfmisc_1, d8_setfam_1, t69_enumset1, t38_zfmisc_1, l55_zfmisc_1, t26_xboole_1, t63_xboole_1, t8_xboole_1, t28_xboole_1, d3_tarski, t39_zfmisc_1, t119_zfmisc_1, reflexivity_r1_tarski, t6_zfmisc_1, t2_xboole_1, d4_xboole_0, t36_xboole_1, t54_subset_1, dt_k7_setfam_1, t136_zfmisc_1, l23_zfmisc_1, t8_boole, rc1_xboole_0, t12_xboole_1, t37_zfmisc_1, symmetry_r1_xboole_0, t10_zfmisc_1, t2_subset, idempotence_k2_xboole_0, t9_tarski, t50_subset_1, d10_xboole_0, t7_xboole_1, t60_xboole_1, t3_xboole_0, t3_boole, rc2_xboole_0, t45_xboole_1, t40_xboole_1, irreflexivity_r2_xboole_0, t65_zfmisc_1, d3_xboole_0, t39_xboole_1, antisymmetry_r2_hidden, dt_k3_subset_1, l1_zfmisc_1
% 8.55/3.77  % No. of inferences in proof: 224
% 8.55/3.77  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 3221 ms resp. 2505 ms w/o parsing
% 9.57/3.92  % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 9.57/3.93  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------