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

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%------------------------------------------------------------------------------
% File     : Leo-III---1.8.0
% Problem  : KLE024+1 : TPTP v9.3.1. Released v4.0.0.
% 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 : n018.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 07:43:00 AM UTC 2026

% Result   : Theorem 19.65s 6.70s
% Output   : Refutation 19.65s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   14
%            Number of leaves      :   21
% Syntax   : Number of formulae    :  126 (  71 unt;   0 typ;   4 def)
%            Number of atoms       :  263 ( 149 equ;   0 cnn)
%            Maximal formula atoms :    8 (   2 avg)
%            Number of connectives :  862 (  88   ~;  53   |;  23   &; 665   @)
%                                         (   4 <=>;  29  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   4 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   15 (  12 usr;   7 con; 0-2 aty)
%            Number of variables   :  180 (   1   ^; 170   !;   5   ?; 180   :)
%                                         (   0  !>;   0  ?*;   0  @-;   4  @+)

% Comments : 
%------------------------------------------------------------------------------
thf(test_decl,type,
    test: $i > $o ).

thf(addition_decl,type,
    addition: $i > $i > $i ).

thf(multiplication_decl,type,
    multiplication: $i > $i > $i ).

thf(c_decl,type,
    c: $i > $i ).

thf(zero_decl,type,
    zero: $i ).

thf(one_decl,type,
    one: $i ).

thf(complement_decl,type,
    complement: $i > $i > $o ).

thf(leq_decl,type,
    leq: $i > $i > $o ).

thf(sk1_decl,type,
    sk1: $i ).

thf(sk2_decl,type,
    sk2: $i ).

thf(sk3_decl,type,
    sk3: $i ).

thf(sk4_decl,type,
    sk4: $i > $i ).

thf(sk1_def,definition,
    ( sk1
    = ( @+[A: $i] :
          ~ ! [B: $i,C: $i] :
              ( ( ( C @ test )
                & ( B @ test ) )
             => ( ( ( A @ ( B @ c @ multiplication ) @ ( C @ c @ ( A @ multiplication ) @ addition ) )
                  = ( A @ ( B @ c @ multiplication ) ) )
               => ( ( C @ c @ ( A @ ( B @ multiplication ) @ multiplication ) )
                  = zero ) ) ) ) ) ).

thf(sk2_def,definition,
    ( sk2
    = ( @+[A: $i] :
          ~ ! [B: $i] :
              ( ( ( B @ test )
                & ( A @ test ) )
             => ( ( ( sk1 @ ( A @ c @ multiplication ) @ ( B @ c @ ( sk1 @ multiplication ) @ addition ) )
                  = ( sk1 @ ( A @ c @ multiplication ) ) )
               => ( ( B @ c @ ( sk1 @ ( A @ multiplication ) @ multiplication ) )
                  = zero ) ) ) ) ) ).

thf(sk3_def,definition,
    ( sk3
    = ( @+[A: $i] :
          ~ ( ( ( A @ test )
              & ( sk2 @ test ) )
           => ( ( ( sk1 @ ( sk2 @ c @ multiplication ) @ ( A @ c @ ( sk1 @ multiplication ) @ addition ) )
                = ( sk1 @ ( sk2 @ c @ multiplication ) ) )
             => ( ( A @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) )
                = zero ) ) ) ) ) ).

thf(sk4_def,definition,
    ( sk4
    = ( ^ [A: $i] :
        @+[B: $i] : ( A @ ( B @ complement ) ) ) ) ).

thf(11,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ addition ) )
      = ( A @ ( B @ addition ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',additive_commutativity) ).

thf(54,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ addition ) )
      = ( A @ ( B @ addition ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[11]) ).

thf(55,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ addition ) )
      = ( A @ ( B @ addition ) ) ),
    inference(cnf,[status(esa)],[54]) ).

thf(56,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ addition ) )
      = ( A @ ( B @ addition ) ) ),
    inference(lifteq,[status(thm)],[55]) ).

thf(3,axiom,
    ! [A: $i] :
      ( ( A @ ( zero @ multiplication ) )
      = zero ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',left_annihilation) ).

thf(27,plain,
    ! [A: $i] :
      ( ( A @ ( zero @ multiplication ) )
      = zero ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(28,plain,
    ! [A: $i] :
      ( ( A @ ( zero @ multiplication ) )
      = zero ),
    inference(cnf,[status(esa)],[27]) ).

thf(29,plain,
    ! [A: $i] :
      ( ( A @ ( zero @ multiplication ) )
      = zero ),
    inference(lifteq,[status(thm)],[28]) ).

thf(1,conjecture,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( C @ test )
        & ( B @ test ) )
     => ( ( ( A @ ( B @ c @ multiplication ) @ ( C @ c @ ( A @ multiplication ) @ addition ) )
          = ( A @ ( B @ c @ multiplication ) ) )
       => ( ( C @ c @ ( A @ ( B @ multiplication ) @ multiplication ) )
          = zero ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',goals) ).

thf(2,negated_conjecture,
    ~ ! [A: $i,B: $i,C: $i] :
        ( ( ( C @ test )
          & ( B @ test ) )
       => ( ( ( A @ ( B @ c @ multiplication ) @ ( C @ c @ ( A @ multiplication ) @ addition ) )
            = ( A @ ( B @ c @ multiplication ) ) )
         => ( ( C @ c @ ( A @ ( B @ multiplication ) @ multiplication ) )
            = zero ) ) ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(19,plain,
    ~ ! [A: $i,B: $i,C: $i] :
        ( ( ( C @ test )
          & ( B @ test ) )
       => ( ( ( A @ ( B @ c @ multiplication ) @ ( C @ c @ ( A @ multiplication ) @ addition ) )
            = ( A @ ( B @ c @ multiplication ) ) )
         => ( ( C @ c @ ( A @ ( B @ multiplication ) @ multiplication ) )
            = zero ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(20,plain,
    ( ( ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) )
     != zero )
    & ( ( sk1 @ ( sk2 @ c @ multiplication ) @ ( sk3 @ c @ ( sk1 @ multiplication ) @ addition ) )
      = ( sk1 @ ( sk2 @ c @ multiplication ) ) )
    & ( sk3 @ test )
    & ( sk2 @ test ) ),
    inference(cnf,[status(esa)],[19]) ).

thf(24,plain,
    ( ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) )
   != zero ),
    inference(cnfConj,[status(thm)],[20]) ).

thf(26,plain,
    ( ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) )
   != zero ),
    inference(lifteq,[status(thm)],[24]) ).

thf(104,plain,
    ! [A: $i] :
      ( ( ( A @ ( zero @ multiplication ) )
       != ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) ) )
      | ( zero != zero ) ),
    inference(paramod_ordered,[status(thm)],[29,26]) ).

thf(105,plain,
    ! [A: $i] :
      ( ( A @ ( zero @ multiplication ) )
     != ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) ) ),
    inference(simp,[status(thm)],[104]) ).

thf(110,plain,
    ! [A: $i] :
      ( ( A
       != ( sk3 @ c ) )
      | ( ( sk1 @ ( sk2 @ multiplication ) )
       != zero ) ),
    inference(simp,[status(thm)],[105]) ).

thf(116,plain,
    ( ( sk1 @ ( sk2 @ multiplication ) )
   != zero ),
    inference(simp,[status(thm)],[110]) ).

thf(21,plain,
    sk2 @ test,
    inference(cnfConj,[status(thm)],[20]) ).

thf(12,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ test )
     => ( ( ( A @ c )
          = B )
      <=> ( B @ ( A @ complement ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',test_3) ).

thf(57,plain,
    ! [A: $i,B: $i] :
      ( ( A @ test )
     => ( ( ( B @ ( A @ complement ) )
         => ( ( A @ c )
            = B ) )
        & ( ( ( A @ c )
            = B )
         => ( B @ ( A @ complement ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[12]) ).

thf(58,plain,
    ! [A: $i] :
      ( ( A @ test )
     => ( ! [B: $i] :
            ( ( B @ ( A @ complement ) )
           => ( ( A @ c )
              = B ) )
        & ! [B: $i] :
            ( ( ( A @ c )
              = B )
           => ( B @ ( A @ complement ) ) ) ) ),
    inference(miniscope,[status(thm)],[57]) ).

thf(59,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( ( A @ c )
          = C )
        | ~ ( C @ ( A @ complement ) )
        | ~ ( A @ test ) )
      & ( ( B @ ( A @ complement ) )
        | ( ( A @ c )
         != B )
        | ~ ( A @ test ) ) ),
    inference(cnf,[status(esa)],[58]) ).

thf(60,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ complement ) )
      | ( ( A @ c )
       != B )
      | ~ ( A @ test ) ),
    inference(cnfConj,[status(thm)],[59]) ).

thf(62,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ complement ) )
      | ~ ( A @ test )
      | ( ( A @ c )
       != B ) ),
    inference(lifteq,[status(thm)],[60]) ).

thf(63,plain,
    ! [A: $i] :
      ( ( A @ c @ ( A @ complement ) )
      | ~ ( A @ test ) ),
    inference(simp,[status(thm)],[62]) ).

thf(659,plain,
    ! [A: $i] :
      ( ( ( sk2 @ test )
       != ( A @ test ) )
      | ( A @ c @ ( A @ complement ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[21,63]) ).

thf(660,plain,
    ! [A: $i] :
      ( ( ( sk2 @ test )
       != ( A @ test ) )
      | ( A @ c @ ( A @ complement ) ) ),
    inference(simp,[status(thm)],[659]) ).

thf(661,plain,
    sk2 @ c @ ( sk2 @ complement ),
    inference(pattern_uni,[status(thm)],[660:[bind(A,$thf( sk2 ))]]) ).

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

thf(51,plain,
    ! [A: $i] :
      ( ( A @ ( A @ addition ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[10]) ).

thf(52,plain,
    ! [A: $i] :
      ( ( A @ ( A @ addition ) )
      = A ),
    inference(cnf,[status(esa)],[51]) ).

thf(53,plain,
    ! [A: $i] :
      ( ( A @ ( A @ addition ) )
      = A ),
    inference(lifteq,[status(thm)],[52]) ).

thf(7,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ ( A @ addition ) @ multiplication ) )
      = ( C @ ( B @ multiplication ) @ ( C @ ( A @ multiplication ) @ addition ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',left_distributivity) ).

thf(39,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ ( A @ addition ) @ multiplication ) )
      = ( C @ ( B @ multiplication ) @ ( C @ ( A @ multiplication ) @ addition ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(40,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ addition ) @ multiplication ) )
      = ( C @ ( B @ multiplication ) @ ( C @ ( A @ multiplication ) @ addition ) ) ),
    inference(cnf,[status(esa)],[39]) ).

thf(41,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ addition ) @ multiplication ) )
      = ( C @ ( B @ multiplication ) @ ( C @ ( A @ multiplication ) @ addition ) ) ),
    inference(lifteq,[status(thm)],[40]) ).

thf(9,axiom,
    ! [A: $i] :
      ( ( A @ test )
    <=> ? [B: $i] : ( A @ ( B @ complement ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',test_1) ).

thf(45,plain,
    ! [A: $i] :
      ( ( ? [B: $i] : ( A @ ( B @ complement ) )
       => ( A @ test ) )
      & ( ( A @ test )
       => ? [B: $i] : ( A @ ( B @ complement ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).

thf(46,plain,
    ( ! [A: $i] :
        ( ? [B: $i] : ( A @ ( B @ complement ) )
       => ( A @ test ) )
    & ! [A: $i] :
        ( ( A @ test )
       => ? [B: $i] : ( A @ ( B @ complement ) ) ) ),
    inference(miniscope,[status(thm)],[45]) ).

thf(47,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ test )
        | ~ ( B @ ( C @ complement ) ) )
      & ( ( A @ ( A @ sk4 @ complement ) )
        | ~ ( A @ test ) ) ),
    inference(cnf,[status(esa)],[46]) ).

thf(49,plain,
    ! [B: $i,A: $i] :
      ( ( A @ test )
      | ~ ( A @ ( B @ complement ) ) ),
    inference(cnfConj,[status(thm)],[47]) ).

thf(50,plain,
    ! [B: $i,A: $i] :
      ( ( A @ test )
      | ~ ( A @ ( B @ complement ) ) ),
    inference(simp,[status(thm)],[49]) ).

thf(134,plain,
    ! [A: $i] :
      ( ( ( A @ ( zero @ multiplication ) )
       != ( sk1 @ ( sk2 @ multiplication ) ) )
      | ( zero != zero ) ),
    inference(paramod_ordered,[status(thm)],[29,116]) ).

thf(135,plain,
    ! [A: $i] :
      ( ( A @ ( zero @ multiplication ) )
     != ( sk1 @ ( sk2 @ multiplication ) ) ),
    inference(simp,[status(thm)],[134]) ).

thf(139,plain,
    ! [A: $i] :
      ( ( A != sk1 )
      | ( sk2 != zero ) ),
    inference(simp,[status(thm)],[135]) ).

thf(143,plain,
    sk2 != zero,
    inference(simp,[status(thm)],[139]) ).

thf(17,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ addition ) @ ( A @ multiplication ) )
      = ( C @ ( A @ multiplication ) @ ( B @ ( A @ multiplication ) @ addition ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',right_distributivity) ).

thf(87,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ addition ) @ ( A @ multiplication ) )
      = ( C @ ( A @ multiplication ) @ ( B @ ( A @ multiplication ) @ addition ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[17]) ).

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

thf(81,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ multiplication ) )
      = zero ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[15]) ).

thf(82,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ multiplication ) )
      = zero ),
    inference(cnf,[status(esa)],[81]) ).

thf(83,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ multiplication ) )
      = zero ),
    inference(lifteq,[status(thm)],[82]) ).

thf(107,plain,
    ! [A: $i] :
      ( ( ( zero @ ( A @ multiplication ) )
       != ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) ) )
      | ( zero != zero ) ),
    inference(paramod_ordered,[status(thm)],[83,26]) ).

thf(108,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ multiplication ) )
     != ( sk3 @ c @ ( sk1 @ ( sk2 @ multiplication ) @ multiplication ) ) ),
    inference(simp,[status(thm)],[107]) ).

thf(112,plain,
    ! [A: $i] :
      ( ( ( sk3 @ c )
       != zero )
      | ( A
       != ( sk1 @ ( sk2 @ multiplication ) ) ) ),
    inference(simp,[status(thm)],[108]) ).

thf(114,plain,
    ( ( sk3 @ c )
   != zero ),
    inference(simp,[status(thm)],[112]) ).

thf(22,plain,
    sk3 @ test,
    inference(cnfConj,[status(thm)],[20]) ).

thf(48,plain,
    ! [A: $i] :
      ( ( A @ ( A @ sk4 @ complement ) )
      | ~ ( A @ test ) ),
    inference(cnfConj,[status(thm)],[47]) ).

thf(476,plain,
    ! [A: $i] :
      ( ( ( sk3 @ test )
       != ( A @ test ) )
      | ( A @ ( A @ sk4 @ complement ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[22,48]) ).

thf(477,plain,
    ! [A: $i] :
      ( ( ( sk3 @ test )
       != ( A @ test ) )
      | ( A @ ( A @ sk4 @ complement ) ) ),
    inference(simp,[status(thm)],[476]) ).

thf(478,plain,
    sk3 @ ( sk3 @ sk4 @ complement ),
    inference(pattern_uni,[status(thm)],[477:[bind(A,$thf( sk3 ))]]) ).

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

thf(42,plain,
    ! [A: $i] :
      ( ( A @ ( one @ multiplication ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).

thf(23,plain,
    ( ( sk1 @ ( sk2 @ c @ multiplication ) @ ( sk3 @ c @ ( sk1 @ multiplication ) @ addition ) )
    = ( sk1 @ ( sk2 @ c @ multiplication ) ) ),
    inference(cnfConj,[status(thm)],[20]) ).

thf(25,plain,
    ( ( sk1 @ ( sk2 @ c @ multiplication ) @ ( sk3 @ c @ ( sk1 @ multiplication ) @ addition ) )
    = ( sk1 @ ( sk2 @ c @ multiplication ) ) ),
    inference(lifteq,[status(thm)],[23]) ).

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

thf(30,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ multiplication ) @ ( A @ multiplication ) )
      = ( C @ ( B @ ( A @ multiplication ) @ multiplication ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).

thf(31,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ multiplication ) @ ( A @ multiplication ) )
      = ( C @ ( B @ ( A @ multiplication ) @ multiplication ) ) ),
    inference(cnf,[status(esa)],[30]) ).

thf(32,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ multiplication ) @ multiplication ) )
      = ( C @ ( B @ multiplication ) @ ( A @ multiplication ) ) ),
    inference(lifteq,[status(thm)],[31]) ).

thf(204,plain,
    ( ( sk3 @ c @ ( sk1 @ multiplication ) @ ( sk2 @ multiplication ) )
   != zero ),
    inference(rewrite,[status(thm)],[26,32]) ).

thf(261,plain,
    ! [A: $i] :
      ( ( ( zero @ ( A @ multiplication ) )
       != ( sk3 @ c @ ( sk1 @ multiplication ) @ ( sk2 @ multiplication ) ) )
      | ( zero != zero ) ),
    inference(paramod_ordered,[status(thm)],[83,204]) ).

thf(262,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ multiplication ) )
     != ( sk3 @ c @ ( sk1 @ multiplication ) @ ( sk2 @ multiplication ) ) ),
    inference(simp,[status(thm)],[261]) ).

thf(276,plain,
    ! [A: $i] :
      ( ( ( sk3 @ c @ ( sk1 @ multiplication ) )
       != zero )
      | ( A != sk2 ) ),
    inference(simp,[status(thm)],[262]) ).

thf(284,plain,
    ( ( sk3 @ c @ ( sk1 @ multiplication ) )
   != zero ),
    inference(simp,[status(thm)],[276]) ).

thf(14,axiom,
    ! [A: $i] :
      ( ( one @ ( A @ multiplication ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiplicative_right_identity) ).

thf(78,plain,
    ! [A: $i] :
      ( ( one @ ( A @ multiplication ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[14]) ).

thf(473,plain,
    ! [A: $i] :
      ( ( ( sk2 @ test )
       != ( A @ test ) )
      | ( A @ ( A @ sk4 @ complement ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[21,48]) ).

thf(474,plain,
    ! [A: $i] :
      ( ( ( sk2 @ test )
       != ( A @ test ) )
      | ( A @ ( A @ sk4 @ complement ) ) ),
    inference(simp,[status(thm)],[473]) ).

thf(475,plain,
    sk2 @ ( sk2 @ sk4 @ complement ),
    inference(pattern_uni,[status(thm)],[474:[bind(A,$thf( sk2 ))]]) ).

thf(16,axiom,
    ! [A: $i] :
      ( ( zero @ ( A @ addition ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',additive_identity) ).

thf(84,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ addition ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[16]) ).

thf(6,axiom,
    ! [A: $i] :
      ( ~ ( A @ test )
     => ( ( A @ c )
        = zero ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',test_4) ).

thf(36,plain,
    ! [A: $i] :
      ( ~ ( A @ test )
     => ( ( A @ c )
        = zero ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).

thf(37,plain,
    ! [A: $i] :
      ( ( ( A @ c )
        = zero )
      | ( A @ test ) ),
    inference(cnf,[status(esa)],[36]) ).

thf(38,plain,
    ! [A: $i] :
      ( ( A @ test )
      | ( ( A @ c )
        = zero ) ),
    inference(lifteq,[status(thm)],[37]) ).

thf(79,plain,
    ! [A: $i] :
      ( ( one @ ( A @ multiplication ) )
      = A ),
    inference(cnf,[status(esa)],[78]) ).

thf(80,plain,
    ! [A: $i] :
      ( ( one @ ( A @ multiplication ) )
      = A ),
    inference(lifteq,[status(thm)],[79]) ).

thf(178,plain,
    ! [A: $i] :
      ( ( ( one @ ( A @ multiplication ) )
       != ( sk1 @ ( sk2 @ multiplication ) ) )
      | ( ( sk3 @ c @ ( A @ multiplication ) )
       != zero ) ),
    inference(paramod_ordered,[status(thm)],[80,26]) ).

thf(187,plain,
    ! [A: $i] :
      ( ( sk1 != one )
      | ( A != sk2 )
      | ( ( sk3 @ c @ ( A @ multiplication ) )
       != zero ) ),
    inference(simp,[status(thm)],[178]) ).

thf(192,plain,
    ( ( sk1 != one )
    | ( ( sk3 @ c @ ( sk2 @ multiplication ) )
     != zero ) ),
    inference(simp,[status(thm)],[187]) ).

thf(5,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( A @ ( B @ addition ) @ ( C @ addition ) )
      = ( A @ ( B @ ( C @ addition ) @ addition ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',additive_associativity) ).

thf(33,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( A @ ( B @ addition ) @ ( C @ addition ) )
      = ( A @ ( B @ ( C @ addition ) @ addition ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(43,plain,
    ! [A: $i] :
      ( ( A @ ( one @ multiplication ) )
      = A ),
    inference(cnf,[status(esa)],[42]) ).

thf(44,plain,
    ! [A: $i] :
      ( ( A @ ( one @ multiplication ) )
      = A ),
    inference(lifteq,[status(thm)],[43]) ).

thf(85,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ addition ) )
      = A ),
    inference(cnf,[status(esa)],[84]) ).

thf(86,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ addition ) )
      = A ),
    inference(lifteq,[status(thm)],[85]) ).

thf(578,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ addition ) )
       != ( zero @ ( C @ addition ) ) )
      | ( ( A @ ( B @ addition ) )
        = C ) ),
    inference(paramod_ordered,[status(thm)],[56,86]) ).

thf(579,plain,
    ! [A: $i] :
      ( ( A @ ( zero @ addition ) )
      = A ),
    inference(pattern_uni,[status(thm)],[578:[bind(A,$thf( A )),bind(B,$thf( zero )),bind(C,$thf( A ))]]) ).

thf(136,plain,
    ! [A: $i] :
      ( ( ( zero @ ( A @ multiplication ) )
       != ( sk1 @ ( sk2 @ multiplication ) ) )
      | ( zero != zero ) ),
    inference(paramod_ordered,[status(thm)],[83,116]) ).

thf(137,plain,
    ! [A: $i] :
      ( ( zero @ ( A @ multiplication ) )
     != ( sk1 @ ( sk2 @ multiplication ) ) ),
    inference(simp,[status(thm)],[136]) ).

thf(140,plain,
    ! [A: $i] :
      ( ( sk1 != zero )
      | ( A != sk2 ) ),
    inference(simp,[status(thm)],[137]) ).

thf(144,plain,
    sk1 != zero,
    inference(simp,[status(thm)],[140]) ).

thf(662,plain,
    ! [A: $i] :
      ( ( ( sk3 @ test )
       != ( A @ test ) )
      | ( A @ c @ ( A @ complement ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[22,63]) ).

thf(663,plain,
    ! [A: $i] :
      ( ( ( sk3 @ test )
       != ( A @ test ) )
      | ( A @ c @ ( A @ complement ) ) ),
    inference(simp,[status(thm)],[662]) ).

thf(664,plain,
    sk3 @ c @ ( sk3 @ complement ),
    inference(pattern_uni,[status(thm)],[663:[bind(A,$thf( sk3 ))]]) ).

thf(679,plain,
    ! [B: $i,A: $i] :
      ( ( ( sk3 @ c @ ( sk3 @ complement ) )
       != ( A @ ( B @ complement ) ) )
      | ( A @ test )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[664,50]) ).

thf(680,plain,
    ! [B: $i,A: $i] :
      ( ( ( sk3 @ c @ ( sk3 @ complement ) )
       != ( A @ ( B @ complement ) ) )
      | ( A @ test ) ),
    inference(simp,[status(thm)],[679]) ).

thf(681,plain,
    sk3 @ c @ test,
    inference(pattern_uni,[status(thm)],[680:[bind(A,$thf( sk3 @ c )),bind(B,$thf( sk3 ))]]) ).

thf(13,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ ( B @ complement ) )
    <=> ( ( ( B @ ( A @ addition ) )
          = one )
        & ( ( A @ ( B @ multiplication ) )
          = zero )
        & ( ( B @ ( A @ multiplication ) )
          = zero ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',test_2) ).

thf(66,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( ( B @ ( A @ addition ) )
            = one )
          & ( ( A @ ( B @ multiplication ) )
            = zero )
          & ( ( B @ ( A @ multiplication ) )
            = zero ) )
       => ( A @ ( B @ complement ) ) )
      & ( ( A @ ( B @ complement ) )
       => ( ( ( B @ ( A @ addition ) )
            = one )
          & ( ( A @ ( B @ multiplication ) )
            = zero )
          & ( ( B @ ( A @ multiplication ) )
            = zero ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[13]) ).

thf(666,plain,
    ! [B: $i,A: $i] :
      ( ( ( sk2 @ c @ ( sk2 @ complement ) )
       != ( A @ ( B @ complement ) ) )
      | ( A @ test )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[661,50]) ).

thf(667,plain,
    ! [B: $i,A: $i] :
      ( ( ( sk2 @ c @ ( sk2 @ complement ) )
       != ( A @ ( B @ complement ) ) )
      | ( A @ test ) ),
    inference(simp,[status(thm)],[666]) ).

thf(668,plain,
    sk2 @ c @ test,
    inference(pattern_uni,[status(thm)],[667:[bind(A,$thf( sk2 @ c )),bind(B,$thf( sk2 ))]]) ).

thf(34,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A @ ( B @ addition ) @ ( C @ addition ) )
      = ( A @ ( B @ ( C @ addition ) @ addition ) ) ),
    inference(cnf,[status(esa)],[33]) ).

thf(35,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A @ ( B @ ( C @ addition ) @ addition ) )
      = ( A @ ( B @ addition ) @ ( C @ addition ) ) ),
    inference(lifteq,[status(thm)],[34]) ).

thf(211,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( C @ ( B @ ( A @ multiplication ) @ multiplication ) )
       != ( sk1 @ ( sk2 @ multiplication ) ) )
      | ( ( C @ ( B @ multiplication ) @ ( A @ multiplication ) )
       != zero ) ),
    inference(paramod_ordered,[status(thm)],[32,116]) ).

thf(230,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C != sk1 )
      | ( ( B @ ( A @ multiplication ) )
       != sk2 )
      | ( ( C @ ( B @ multiplication ) @ ( A @ multiplication ) )
       != zero ) ),
    inference(simp,[status(thm)],[211]) ).

thf(239,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ multiplication ) )
       != sk2 )
      | ( ( sk1 @ ( B @ multiplication ) @ ( A @ multiplication ) )
       != zero ) ),
    inference(simp,[status(thm)],[230]) ).

thf(18,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ leq ) )
    <=> ( ( B @ ( A @ addition ) )
        = B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',order) ).

thf(90,plain,
    ! [A: $i,B: $i] :
      ( ( ( ( B @ ( A @ addition ) )
          = B )
       => ( B @ ( A @ leq ) ) )
      & ( ( B @ ( A @ leq ) )
       => ( ( B @ ( A @ addition ) )
          = B ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[18]) ).

thf(4943,plain,
    $false,
    inference(e,[status(thm)],[56,116,661,53,41,50,143,87,114,478,42,25,284,57,78,29,475,84,38,192,21,33,32,45,22,44,579,204,27,54,144,86,681,81,39,66,668,80,35,48,63,36,30,51,19,239,664,90,83]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02  % Problem  : KLE024+1 : TPTP v9.3.1. Released v4.0.0.
% 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
% 0.13/0.52  % Computer : n018.cluster.edu
% 0.13/0.52  % Model    : x86_64 x86_64
% 0.13/0.52  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.52  % Memory   : 8046.5625MB
% 0.13/0.52  % OS       : Linux 6.8.0-71-generic
% 0.13/0.52  % CPULimit : 300
% 0.13/0.52  % WCLimit  : 300
% 0.13/0.52  % DateTime : Fri Sep 25 19:16:37 UTC 2026
% 0.13/0.52  % CPUTime  : 
% 0.13/0.52  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
% 1.29/1.34  % [INFO] 	 Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ... 
% 1.83/1.67  % [INFO] 	 Parsing done (326ms). 
% 1.83/1.69  % [INFO] 	 Running in sequential loop mode. 
% 2.92/2.27  % [INFO] 	 eprover registered as external prover. 
% 2.92/2.28  % [INFO] 	 Scanning for conjecture ... 
% 3.15/2.38  % [INFO] 	 Found a conjecture (or negated_conjecture) and 16 axioms. Running axiom selection ... 
% 3.33/2.45  % [INFO] 	 Axiom selection finished. Selected 16 axioms (removed 0 axioms). 
% 3.33/2.48  % [INFO] 	 Problem is first-order (TPTP FOF). 
% 3.33/2.49  % [INFO] 	 Type checking passed. 
% 3.33/2.49  % [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 ... 
% 22.38/6.69  % External prover 'e' found a proof!
% 22.38/6.69  % [INFO] 	 Killing All external provers ... 
% 22.38/6.69  % Time passed: 5956ms (effective reasoning time: 4993ms)
% 22.38/6.69  % 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)>
% 22.38/6.70  % Axioms used in derivation (16): additive_identity, test_3, test_4, left_annihilation, right_distributivity, multiplicative_right_identity, test_1, right_annihilation, additive_idempotence, additive_associativity, order, additive_commutativity, test_2, multiplicative_left_identity, multiplicative_associativity, left_distributivity
% 22.38/6.70  % No. of inferences in proof: 122
% 19.65/6.70  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 5956 ms resp. 4993 ms w/o parsing
% 19.65/6.79  % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 19.65/6.79  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------