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

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%------------------------------------------------------------------------------
% File     : Leo-III---1.8.0
% Problem  : NUN024^2 : TPTP v9.3.1. Released v6.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39

% Computer : n026.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed Sep 30 08:19:48 AM UTC 2026

% Result   : Theorem 6.74s 3.12s
% Output   : Refutation 7.20s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   24
%            Number of leaves      :    1
% Syntax   : Number of formulae    :   51 (  14 unt;   0 typ;   0 def)
%            Number of atoms       :  267 ( 231 equ;   0 cnn)
%            Maximal formula atoms :   10 (   5 avg)
%            Number of connectives :  758 ( 113   ~;  44   |;  98   &; 474   @)
%                                         (   0 <=>;  29  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   14 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   24 (  24   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    7 (   4 usr;   3 con; 0-3 aty)
%            Number of variables   :  177 (   0   ^; 154   !;  23   ?; 177   :)

% Comments : 
%------------------------------------------------------------------------------
thf(zero_decl,type,
    zero: $i ).

thf(s_decl,type,
    s: $i > $i ).

thf(ite_decl,type,
    ite: $o > $i > $i > $i ).

thf(h_decl,type,
    h: $i > $i ).

thf(1,conjecture,
    ( ( ! [A: $o,B: $i,C: $i] :
          ( A
         => ( ( ite @ A @ B @ C )
            = B ) )
      & ! [A: $o,B: $i,C: $i] :
          ( ~ A
         => ( ( ite @ A @ B @ C )
            = C ) )
      & ! [A: $i] :
          ( ( s @ A )
         != zero )
      & ! [A: $i] :
          ( ( s @ A )
         != A )
      & ! [A: $i] :
          ( ( h @ A )
          = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
   => ? [A: $i > $i] :
        ( ( ( A @ zero )
          = ( s @ zero ) )
        & ( ( A @ ( s @ zero ) )
          = zero )
        & ( ( A @ ( s @ ( s @ zero ) ) )
          = zero ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',n10) ).

thf(2,negated_conjecture,
    ~ ( ( ! [A: $o,B: $i,C: $i] :
            ( A
           => ( ( ite @ A @ B @ C )
              = B ) )
        & ! [A: $o,B: $i,C: $i] :
            ( ~ A
           => ( ( ite @ A @ B @ C )
              = C ) )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(3,plain,
    ~ ( ( ! [A: $o,B: $i,C: $i] :
            ( A
           => ( ( ite @ A @ B @ C )
              = B ) )
        & ! [A: $o,B: $i,C: $i] :
            ( ~ A
           => ( ( ite @ A @ B @ C )
              = C ) )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(6,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( $true
           => ( ( ite @ $true @ A @ B )
              = A ) )
        & ! [A: $i,B: $i] :
            ( ~ $false
           => ( ( ite @ $false @ A @ B )
              = B ) )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(instance,[status(thm)],[3]) ).

thf(7,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( ( ite @ $true @ A @ B )
            = A )
        & ! [A: $i,B: $i] :
            ( ( ite @ $false @ A @ B )
            = B )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(simp,[status(thm)],[6]) ).

thf(19,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( ( ite @ $true @ A @ B )
            = A )
        & ! [A: $i,B: $i] :
            ( ( ite @ $false @ A @ B )
            = B )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = zero )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(miniscope,[status(thm)],[7]) ).

thf(20,plain,
    ! [H: $i > $i,G: $i,F: $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( ite @ $true @ A @ B )
        = A )
      & ( ( ite @ $false @ C @ D )
        = D )
      & ( ( s @ E )
       != zero )
      & ( ( s @ F )
       != F )
      & ( ( h @ G )
        = ( ite @ ( G = zero ) @ ( s @ zero ) @ zero ) )
      & ( ( ( H @ zero )
         != ( s @ zero ) )
        | ( ( H @ ( s @ zero ) )
         != zero )
        | ( ( H @ ( s @ ( s @ zero ) ) )
         != zero ) ) ),
    inference(cnf,[status(esa)],[19]) ).

thf(25,plain,
    ! [A: $i] :
      ( ( h @ A )
      = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ),
    inference(cnfConj,[status(thm)],[20]) ).

thf(56,plain,
    ! [A: $i] :
      ( ( ite @ ( A = zero ) @ ( s @ zero ) @ zero )
      = ( h @ A ) ),
    inference(lifteq,[status(thm)],[25]) ).

thf(57,plain,
    ! [A: $i] :
      ( ( ite @ ( A = zero ) @ ( s @ zero ) @ zero )
      = ( h @ A ) ),
    inference(simp,[status(thm)],[56]) ).

thf(22,plain,
    ! [B: $i,A: $i] :
      ( ( ite @ $false @ A @ B )
      = B ),
    inference(cnfConj,[status(thm)],[20]) ).

thf(43,plain,
    ! [B: $i,A: $i] :
      ( ( ite @ $false @ A @ B )
      = B ),
    inference(lifteq,[status(thm)],[22]) ).

thf(44,plain,
    ! [B: $i,A: $i] :
      ( ( ite @ $false @ A @ B )
      = B ),
    inference(simp,[status(thm)],[43]) ).

thf(110,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( h @ A )
        = C )
      | ( ( ite @ ( A = zero ) @ ( s @ zero ) @ zero )
       != ( ite @ $false @ B @ C ) ) ),
    inference(paramod_ordered,[status(thm)],[57,44]) ).

thf(119,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( h @ A )
        = C )
      | ( A = zero )
      | ( ( s @ zero )
       != B )
      | ( zero != C ) ),
    inference(simp,[status(thm)],[110]) ).

thf(130,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A = zero )
      | ( ( h @ A )
        = C )
      | ( ( s @ zero )
       != B )
      | ( zero != C ) ),
    inference(lifteq,[status(thm)],[119]) ).

thf(131,plain,
    ! [A: $i] :
      ( ( A = zero )
      | ( ( h @ A )
        = zero ) ),
    inference(simp,[status(thm)],[130]) ).

thf(4,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( $true
           => ( ( ite @ $true @ A @ B )
              = A ) )
        & ! [A: $i,B: $i] :
            ( ~ $true
           => ( ( ite @ $true @ A @ B )
              = B ) )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(instance,[status(thm)],[3]) ).

thf(5,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( ( ite @ $true @ A @ B )
            = A )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(simp,[status(thm)],[4]) ).

thf(12,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( ( ite @ $true @ A @ B )
            = A )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = zero )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(miniscope,[status(thm)],[5]) ).

thf(13,plain,
    ! [F: $i > $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( ite @ $true @ A @ B )
        = A )
      & ( ( s @ C )
       != zero )
      & ( ( s @ D )
       != D )
      & ( ( h @ E )
        = ( ite @ ( E = zero ) @ ( s @ zero ) @ zero ) )
      & ( ( ( F @ zero )
         != ( s @ zero ) )
        | ( ( F @ ( s @ zero ) )
         != zero )
        | ( ( F @ ( s @ ( s @ zero ) ) )
         != zero ) ) ),
    inference(cnf,[status(esa)],[12]) ).

thf(16,plain,
    ! [B: $i,A: $i] :
      ( ( ite @ $true @ A @ B )
      = A ),
    inference(cnfConj,[status(thm)],[13]) ).

thf(66,plain,
    ! [B: $i,A: $i] :
      ( ( ite @ $true @ A @ B )
      = A ),
    inference(lifteq,[status(thm)],[16]) ).

thf(113,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
        = ( h @ C ) )
      | ( ( ite @ $true @ A @ B )
       != ( ite @ ( C = zero ) @ ( s @ zero ) @ zero ) ) ),
    inference(paramod_ordered,[status(thm)],[66,57]) ).

thf(121,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
        = ( h @ C ) )
      | ( C != zero )
      | ( A
       != ( s @ zero ) )
      | ( B != zero ) ),
    inference(simp,[status(thm)],[113]) ).

thf(133,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C != zero )
      | ( A
        = ( h @ C ) )
      | ( A
       != ( s @ zero ) )
      | ( B != zero ) ),
    inference(lifteq,[status(thm)],[121]) ).

thf(134,plain,
    ( ( h @ zero )
    = ( s @ zero ) ),
    inference(simp,[status(thm)],[133]) ).

thf(10,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( $false
           => ( ( ite @ $false @ A @ B )
              = A ) )
        & ! [A: $i,B: $i] :
            ( ~ $false
           => ( ( ite @ $false @ A @ B )
              = B ) )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(instance,[status(thm)],[3]) ).

thf(11,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( ( ite @ $false @ A @ B )
            = B )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(simp,[status(thm)],[10]) ).

thf(33,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( ( ite @ $false @ A @ B )
            = B )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = zero )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(miniscope,[status(thm)],[11]) ).

thf(34,plain,
    ! [F: $i > $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( ite @ $false @ A @ B )
        = B )
      & ( ( s @ C )
       != zero )
      & ( ( s @ D )
       != D )
      & ( ( h @ E )
        = ( ite @ ( E = zero ) @ ( s @ zero ) @ zero ) )
      & ( ( ( F @ zero )
         != ( s @ zero ) )
        | ( ( F @ ( s @ zero ) )
         != zero )
        | ( ( F @ ( s @ ( s @ zero ) ) )
         != zero ) ) ),
    inference(cnf,[status(esa)],[33]) ).

thf(39,plain,
    ! [A: $i > $i] :
      ( ( ( A @ zero )
       != ( s @ zero ) )
      | ( ( A @ ( s @ zero ) )
       != zero )
      | ( ( A @ ( s @ ( s @ zero ) ) )
       != zero ) ),
    inference(cnfConj,[status(thm)],[34]) ).

thf(45,plain,
    ! [A: $i > $i] :
      ( ( ( A @ zero )
       != ( s @ zero ) )
      | ( ( A @ ( s @ zero ) )
       != zero )
      | ( ( A @ ( s @ ( s @ zero ) ) )
       != zero ) ),
    inference(lifteq,[status(thm)],[39]) ).

thf(46,plain,
    ! [A: $i > $i] :
      ( ( ( A @ zero )
       != ( s @ zero ) )
      | ( ( A @ ( s @ zero ) )
       != zero )
      | ( ( A @ ( s @ ( s @ zero ) ) )
       != zero ) ),
    inference(simp,[status(thm)],[45]) ).

thf(143,plain,
    ! [A: $i > $i] :
      ( ( ( s @ zero )
       != ( s @ zero ) )
      | ( ( A @ ( s @ zero ) )
       != zero )
      | ( ( A @ ( s @ ( s @ zero ) ) )
       != zero )
      | ( ( h @ zero )
       != ( A @ zero ) ) ),
    inference(paramod_ordered,[status(thm)],[134,46]) ).

thf(144,plain,
    ! [A: $i > $i] :
      ( ( ( A @ ( s @ zero ) )
       != zero )
      | ( ( A @ ( s @ ( s @ zero ) ) )
       != zero )
      | ( ( h @ zero )
       != ( A @ zero ) ) ),
    inference(simp,[status(thm)],[143]) ).

thf(148,plain,
    ( ( ( h @ ( s @ zero ) )
     != zero )
    | ( ( h @ ( s @ ( s @ zero ) ) )
     != zero ) ),
    inference(pre_uni,[status(thm)],[144:[bind(A,$thf( h ))]]) ).

thf(173,plain,
    ! [A: $i] :
      ( ( A = zero )
      | ( zero != zero )
      | ( ( h @ ( s @ ( s @ zero ) ) )
       != zero )
      | ( ( h @ A )
       != ( h @ ( s @ zero ) ) ) ),
    inference(paramod_ordered,[status(thm)],[131,148]) ).

thf(174,plain,
    ! [A: $i] :
      ( ( A = zero )
      | ( ( h @ ( s @ ( s @ zero ) ) )
       != zero )
      | ( ( h @ A )
       != ( h @ ( s @ zero ) ) ) ),
    inference(simp,[status(thm)],[173]) ).

thf(175,plain,
    ( ( ( s @ zero )
      = zero )
    | ( ( h @ ( s @ ( s @ zero ) ) )
     != zero ) ),
    inference(pattern_uni,[status(thm)],[174:[bind(A,$thf( s @ zero ))]]) ).

thf(8,plain,
    ~ ( ( ! [A: $i,B: $i] :
            ( $false
           => ( ( ite @ $false @ A @ B )
              = A ) )
        & ! [A: $i,B: $i] :
            ( ~ $true
           => ( ( ite @ $true @ A @ B )
              = B ) )
        & ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(instance,[status(thm)],[3]) ).

thf(9,plain,
    ~ ( ( ! [A: $i] :
            ( ( s @ A )
           != zero )
        & ! [A: $i] :
            ( ( s @ A )
           != A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(simp,[status(thm)],[8]) ).

thf(27,plain,
    ~ ( ( ~ ? [A: $i] :
              ( ( s @ A )
              = zero )
        & ~ ? [A: $i] :
              ( ( s @ A )
              = A )
        & ! [A: $i] :
            ( ( h @ A )
            = ( ite @ ( A = zero ) @ ( s @ zero ) @ zero ) ) )
     => ? [A: $i > $i] :
          ( ( ( A @ zero )
            = ( s @ zero ) )
          & ( ( A @ ( s @ zero ) )
            = zero )
          & ( ( A @ ( s @ ( s @ zero ) ) )
            = zero ) ) ),
    inference(miniscope,[status(thm)],[9]) ).

thf(28,plain,
    ! [D: $i > $i,C: $i,B: $i,A: $i] :
      ( ( ( s @ A )
       != zero )
      & ( ( s @ B )
       != B )
      & ( ( h @ C )
        = ( ite @ ( C = zero ) @ ( s @ zero ) @ zero ) )
      & ( ( ( D @ zero )
         != ( s @ zero ) )
        | ( ( D @ ( s @ zero ) )
         != zero )
        | ( ( D @ ( s @ ( s @ zero ) ) )
         != zero ) ) ),
    inference(cnf,[status(esa)],[27]) ).

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

thf(42,plain,
    ! [A: $i] :
      ( ( s @ A )
     != zero ),
    inference(lifteq,[status(thm)],[29]) ).

thf(192,plain,
    ( ( h @ ( s @ ( s @ zero ) ) )
   != zero ),
    inference(simplifyReflect,[status(thm)],[175,42]) ).

thf(194,plain,
    ! [A: $i] :
      ( ( A = zero )
      | ( zero != zero )
      | ( ( h @ A )
       != ( h @ ( s @ ( s @ zero ) ) ) ) ),
    inference(paramod_ordered,[status(thm)],[131,192]) ).

thf(195,plain,
    ! [A: $i] :
      ( ( A = zero )
      | ( ( h @ A )
       != ( h @ ( s @ ( s @ zero ) ) ) ) ),
    inference(simp,[status(thm)],[194]) ).

thf(196,plain,
    ( ( s @ ( s @ zero ) )
    = zero ),
    inference(pattern_uni,[status(thm)],[195:[bind(A,$thf( s @ ( s @ zero ) ))]]) ).

thf(198,plain,
    $false,
    inference(simplifyReflect,[status(thm)],[196,42]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02  % Problem  : NUN024^2 : TPTP v9.3.1. Released v6.4.0.
% 0.00/0.07  % Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.11/0.21  % Computer : n026.cluster.edu
% 0.11/0.21  % Model    : x86_64 x86_64
% 0.11/0.21  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.21  % Memory   : 8046.5625MB
% 0.11/0.21  % OS       : Linux 6.8.0-71-generic
% 0.11/0.21  % CPULimit : 300
% 0.11/0.21  % WCLimit  : 300
% 0.11/0.21  % DateTime : Tue Sep 29 13:08:57 UTC 2026
% 0.11/0.21  % CPUTime  : 
% 0.11/0.21  Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.91/0.78  % [INFO] 	 Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ... 
% 1.27/0.97  % [INFO] 	 Parsing done (185ms). 
% 1.27/0.99  % [INFO] 	 Running in sequential loop mode. 
% 2.08/1.41  % [INFO] 	 eprover registered as external prover. 
% 2.08/1.42  % [INFO] 	 Scanning for conjecture ... 
% 2.30/1.52  % [INFO] 	 Found a conjecture (or negated_conjecture) and 0 axioms. Running axiom selection ... 
% 2.30/1.56  % [INFO] 	 Axiom selection finished. Selected 0 axioms (removed 0 axioms). 
% 2.30/1.57  % [INFO] 	 Problem is higher-order (TPTP THF). 
% 2.30/1.57  % [INFO] 	 Type checking passed. 
% 2.30/1.58  % [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 ... 
% 6.74/3.12  % [INFO] 	 Killing All external provers ... 
% 6.74/3.12  % Time passed: 2766ms (effective reasoning time: 2125ms)
% 6.74/3.12  % 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)>
% 6.74/3.12  % Axioms used in derivation (0): 
% 6.74/3.12  % No. of inferences in proof: 51
% 6.74/3.12  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 2766 ms resp. 2125 ms w/o parsing
% 7.20/3.19  % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 7.20/3.19  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------