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

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : LCL726^5 : TPTP v9.3.1. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p

% Computer : n013.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed Oct  7 10:30:06 AM UTC 2026

% Result   : Theorem 0.08s 0.27s
% Output   : CNFRefutation 0.08s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   21
%            Number of leaves      :    1
% Syntax   : Number of formulae    :   54 (  27 unt;   0 typ;   0 def)
%            Number of atoms       :  226 (  82 equ;   0 cnn)
%            Maximal formula atoms :    3 (   4 avg)
%            Number of connectives :  486 ( 114   ~;  61   |;   0   &; 287   @)
%                                         (   0 <=>;  24  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   3 avg)
%            Number of types       :    2 (   1 usr)
%            Number of type conns  :  231 ( 231   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    9 (   6 usr;   2 con; 0-3 aty)
%            Number of variables   :  166 (   0   ^; 144   !;  22   ?; 166   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_a,type,
    a: $tType ).

thf(tp_sK1_SX0,type,
    sK1_SX0: ( ( a > $o ) > a ) > a > $o ).

thf(tp_sK2_SY9,type,
    sK2_SY9: ( ( a > $o ) > $o ) > a > $o ).

thf(tp_sK3_SY17,type,
    sK3_SY17: ( ( a > $o ) > a ) > a ).

thf(tp_sK4_SY11,type,
    sK4_SY11: ( ( a > $o ) > $o ) > ( a > $o ) > a ).

thf(tp_sK5_SY11,type,
    sK5_SY11: a > ( ( a > $o ) > $o ) > ( a > $o ) > a ).

thf(tp_sK6_Eigen,type,
    sK6_Eigen: ( a > $o ) > a ).

thf(1,conjecture,
    ( ! [Xs: ( a > $o ) > $o] :
        ( ! [X: a > $o] :
            ( ( Xs @ X )
           => ? [Xt: a] : ( X @ Xt ) )
       => ? [Xf: ( a > $o ) > a] :
          ! [X: a > $o] :
            ( ( Xs @ X )
           => ( X @ ( Xf @ X ) ) ) )
   => ! [Xg: ( ( a > $o ) > a ) > a > $o] :
        ( ! [Xh: ( a > $o ) > a] :
          ? [Xu: a] : ( Xg @ Xh @ Xu )
       => ? [Xf: ( a > $o ) > a] : ( Xg @ Xf @ ( Xf @ ( Xg @ Xf ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cTHM534) ).

thf(2,negated_conjecture,
    ( ( ! [Xs: ( a > $o ) > $o] :
          ( ! [X: a > $o] :
              ( ( Xs @ X )
             => ? [Xt: a] : ( X @ Xt ) )
         => ? [Xf: ( a > $o ) > a] :
            ! [X: a > $o] :
              ( ( Xs @ X )
             => ( X @ ( Xf @ X ) ) ) )
     => ! [Xg: ( ( a > $o ) > a ) > a > $o] :
          ( ! [Xh: ( a > $o ) > a] :
            ? [Xu: a] : ( Xg @ Xh @ Xu )
         => ? [Xf: ( a > $o ) > a] : ( Xg @ Xf @ ( Xf @ ( Xg @ Xf ) ) ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[1]) ).

thf(3,plain,
    ( ( ! [Xs: ( a > $o ) > $o] :
          ( ! [X: a > $o] :
              ( ( Xs @ X )
             => ? [Xt: a] : ( X @ Xt ) )
         => ? [Xf: ( a > $o ) > a] :
            ! [X: a > $o] :
              ( ( Xs @ X )
             => ( X @ ( Xf @ X ) ) ) )
     => ! [Xg: ( ( a > $o ) > a ) > a > $o] :
          ( ! [Xh: ( a > $o ) > a] :
            ? [Xu: a] : ( Xg @ Xh @ Xu )
         => ? [Xf: ( a > $o ) > a] : ( Xg @ Xf @ ( Xf @ ( Xg @ Xf ) ) ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(4,plain,
    ( ( ! [Xs: ( a > $o ) > $o] :
          ( ! [X: a > $o] :
              ( ( Xs @ X )
             => ? [Xt: a] : ( X @ Xt ) )
         => ? [Xf: ( a > $o ) > a] :
            ! [X: a > $o] :
              ( ( Xs @ X )
             => ( X @ ( Xf @ X ) ) ) ) )
    = $true ),
    inference(standard_cnf,[status(thm)],[3]) ).

thf(5,plain,
    ( ( ! [Xg: ( ( a > $o ) > a ) > a > $o] :
          ( ! [Xh: ( a > $o ) > a] :
            ? [Xu: a] : ( Xg @ Xh @ Xu )
         => ? [Xf: ( a > $o ) > a] : ( Xg @ Xf @ ( Xf @ ( Xg @ Xf ) ) ) ) )
    = $false ),
    inference(standard_cnf,[status(thm)],[3]) ).

thf(6,plain,
    ( ( ~ ! [Xg: ( ( a > $o ) > a ) > a > $o] :
            ( ! [Xh: ( a > $o ) > a] :
              ? [Xu: a] : ( Xg @ Xh @ Xu )
           => ? [Xf: ( a > $o ) > a] : ( Xg @ Xf @ ( Xf @ ( Xg @ Xf ) ) ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[5]) ).

thf(7,plain,
    ( ( ! [Xs: ( a > $o ) > $o] :
          ( ! [X: a > $o] :
              ( ( Xs @ X )
             => ? [Xt: a] : ( X @ Xt ) )
         => ? [Xf: ( a > $o ) > a] :
            ! [X: a > $o] :
              ( ( Xs @ X )
             => ( X @ ( Xf @ X ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[4]) ).

thf(8,plain,
    ( ( ~ ! [Xg: ( ( a > $o ) > a ) > a > $o] :
            ( ! [Xh: ( a > $o ) > a] :
              ? [Xu: a] : ( Xg @ Xh @ Xu )
           => ? [Xf: ( a > $o ) > a] : ( Xg @ Xf @ ( Xf @ ( Xg @ Xf ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[6]) ).

thf(9,plain,
    ( ( ~ ! [SX0: ( ( a > $o ) > a ) > a > $o] :
            ( ~ ! [SX1: ( a > $o ) > a] :
                  ~ ! [SX2: a] :
                      ~ ( SX0 @ SX1 @ SX2 )
            | ~ ! [SX1: ( a > $o ) > a] :
                  ~ ( SX0 @ SX1 @ ( SX1 @ ( SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(10,plain,
    ( ( ! [SX0: ( a > $o ) > $o] :
          ( ~ ! [SX1: a > $o] :
                ( ~ ( SX0 @ SX1 )
                | ~ ! [SX2: a] :
                      ~ ( SX1 @ SX2 ) )
          | ~ ! [SX1: ( a > $o ) > a] :
                ~ ! [SX2: a > $o] :
                    ( ~ ( SX0 @ SX2 )
                    | ( SX2 @ ( SX1 @ SX2 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(11,plain,
    ( ( ! [SX0: ( ( a > $o ) > a ) > a > $o] :
          ( ~ ! [SX1: ( a > $o ) > a] :
                ~ ! [SX2: a] :
                    ~ ( SX0 @ SX1 @ SX2 )
          | ~ ! [SX1: ( a > $o ) > a] :
                ~ ( SX0 @ SX1 @ ( SX1 @ ( SX0 @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[9]) ).

thf(12,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ~ ! [SY9: a > $o] :
              ( ~ ( SV1 @ SY9 )
              | ~ ! [SX2: a] :
                    ~ ( SY9 @ SX2 ) )
        | ~ ! [SY11: ( a > $o ) > a] :
              ~ ! [SY12: a > $o] :
                  ( ~ ( SV1 @ SY12 )
                  | ( SY12 @ ( SY11 @ SY12 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[10]) ).

thf(13,plain,
    ( ( ~ ! [SY13: ( a > $o ) > a] :
            ~ ! [SY14: a] :
                ~ ( sK1_SX0 @ SY13 @ SY14 )
      | ~ ! [SY15: ( a > $o ) > a] :
            ~ ( sK1_SX0 @ SY15 @ ( SY15 @ ( sK1_SX0 @ SY15 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[11]) ).

thf(14,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ~ ! [SY9: a > $o] :
                ( ~ ( SV1 @ SY9 )
                | ~ ! [SX2: a] :
                      ~ ( SY9 @ SX2 ) ) )
        = $true )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[12]) ).

thf(15,plain,
    ( ( ~ ! [SY13: ( a > $o ) > a] :
            ~ ! [SY14: a] :
                ~ ( sK1_SX0 @ SY13 @ SY14 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[13]) ).

thf(16,plain,
    ( ( ~ ! [SY15: ( a > $o ) > a] :
            ~ ( sK1_SX0 @ SY15 @ ( SY15 @ ( sK1_SX0 @ SY15 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[13]) ).

thf(17,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ! [SY9: a > $o] :
              ( ~ ( SV1 @ SY9 )
              | ~ ! [SX2: a] :
                    ~ ( SY9 @ SX2 ) ) )
        = $false )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[14]) ).

thf(18,plain,
    ( ( ! [SY13: ( a > $o ) > a] :
          ~ ! [SY14: a] :
              ~ ( sK1_SX0 @ SY13 @ SY14 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[15]) ).

thf(19,plain,
    ( ( ! [SY15: ( a > $o ) > a] :
          ~ ( sK1_SX0 @ SY15 @ ( SY15 @ ( sK1_SX0 @ SY15 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[16]) ).

thf(20,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( SV1 @ ( sK2_SY9 @ SV1 ) )
          | ~ ! [SY16: a] :
                ~ ( sK2_SY9 @ SV1 @ SY16 ) )
        = $false )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[17]) ).

thf(21,plain,
    ! [SV2: ( a > $o ) > a] :
      ( ( ~ ! [SY17: a] :
              ~ ( sK1_SX0 @ SV2 @ SY17 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[18]) ).

thf(22,plain,
    ! [SV3: ( a > $o ) > a] :
      ( ( ~ ( sK1_SX0 @ SV3 @ ( SV3 @ ( sK1_SX0 @ SV3 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[19]) ).

thf(23,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( SV1 @ ( sK2_SY9 @ SV1 ) ) )
        = $false )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[20]) ).

thf(24,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ~ ! [SY16: a] :
                ~ ( sK2_SY9 @ SV1 @ SY16 ) )
        = $false )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[20]) ).

thf(25,plain,
    ! [SV2: ( a > $o ) > a] :
      ( ( ! [SY17: a] :
            ~ ( sK1_SX0 @ SV2 @ SY17 ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[21]) ).

thf(26,plain,
    ! [SV3: ( a > $o ) > a] :
      ( ( sK1_SX0 @ SV3 @ ( SV3 @ ( sK1_SX0 @ SV3 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[22]) ).

thf(27,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[23]) ).

thf(28,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ! [SY16: a] :
              ~ ( sK2_SY9 @ SV1 @ SY16 ) )
        = $true )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[24]) ).

thf(29,plain,
    ! [SV2: ( a > $o ) > a] :
      ( ( ~ ( sK1_SX0 @ SV2 @ ( sK3_SY17 @ SV2 ) ) )
      = $false ),
    inference(extcnf_forall_neg,[status(esa)],[25]) ).

thf(30,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ! [SY11: ( a > $o ) > a] :
              ~ ! [SY12: a > $o] :
                  ( ~ ( SV1 @ SY12 )
                  | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $false )
      | ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[27]) ).

thf(31,plain,
    ! [SV4: a,SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( sK2_SY9 @ SV1 @ SV4 ) )
        = $true )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[28]) ).

thf(32,plain,
    ! [SV2: ( a > $o ) > a] :
      ( ( sK1_SX0 @ SV2 @ ( sK3_SY17 @ SV2 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[29]) ).

thf(33,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ~ ! [SY18: a > $o] :
                ( ~ ( SV1 @ SY18 )
                | ( SY18 @ ( sK4_SY11 @ SV1 @ SY18 ) ) ) )
        = $false )
      | ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[30]) ).

thf(34,plain,
    ! [SV4: a,SV1: ( a > $o ) > $o] :
      ( ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false )
      | ( ( ~ ! [SY11: ( a > $o ) > a] :
                ~ ! [SY12: a > $o] :
                    ( ~ ( SV1 @ SY12 )
                    | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[31]) ).

thf(35,plain,
    ! [SV1: ( a > $o ) > $o] :
      ( ( ( ! [SY18: a > $o] :
              ( ~ ( SV1 @ SY18 )
              | ( SY18 @ ( sK4_SY11 @ SV1 @ SY18 ) ) ) )
        = $true )
      | ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[33]) ).

thf(36,plain,
    ! [SV4: a,SV1: ( a > $o ) > $o] :
      ( ( ( ! [SY11: ( a > $o ) > a] :
              ~ ! [SY12: a > $o] :
                  ( ~ ( SV1 @ SY12 )
                  | ( SY12 @ ( SY11 @ SY12 ) ) ) )
        = $false )
      | ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[34]) ).

thf(37,plain,
    ! [SV5: a > $o,SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( SV1 @ SV5 )
          | ( SV5 @ ( sK4_SY11 @ SV1 @ SV5 ) ) )
        = $true )
      | ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[35]) ).

thf(38,plain,
    ! [SV4: a,SV1: ( a > $o ) > $o] :
      ( ( ( ~ ! [SY19: a > $o] :
                ( ~ ( SV1 @ SY19 )
                | ( SY19 @ ( sK5_SY11 @ SV4 @ SV1 @ SY19 ) ) ) )
        = $false )
      | ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false ) ),
    inference(extcnf_forall_neg,[status(esa)],[36]) ).

thf(39,plain,
    ! [SV5: a > $o,SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( SV1 @ SV5 ) )
        = $true )
      | ( ( SV5 @ ( sK4_SY11 @ SV1 @ SV5 ) )
        = $true )
      | ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[37]) ).

thf(40,plain,
    ! [SV4: a,SV1: ( a > $o ) > $o] :
      ( ( ( ! [SY19: a > $o] :
              ( ~ ( SV1 @ SY19 )
              | ( SY19 @ ( sK5_SY11 @ SV4 @ SV1 @ SY19 ) ) ) )
        = $true )
      | ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[38]) ).

thf(41,plain,
    ! [SV5: a > $o,SV1: ( a > $o ) > $o] :
      ( ( ( SV1 @ SV5 )
        = $false )
      | ( ( SV5 @ ( sK4_SY11 @ SV1 @ SV5 ) )
        = $true )
      | ( ( SV1 @ ( sK2_SY9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[39]) ).

thf(42,plain,
    ! [SV4: a,SV6: a > $o,SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( SV1 @ SV6 )
          | ( SV6 @ ( sK5_SY11 @ SV4 @ SV1 @ SV6 ) ) )
        = $true )
      | ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[40]) ).

thf(43,plain,
    ! [SV4: a,SV6: a > $o,SV1: ( a > $o ) > $o] :
      ( ( ( ~ ( SV1 @ SV6 ) )
        = $true )
      | ( ( SV6 @ ( sK5_SY11 @ SV4 @ SV1 @ SV6 ) )
        = $true )
      | ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[42]) ).

thf(44,plain,
    ! [SV4: a,SV6: a > $o,SV1: ( a > $o ) > $o] :
      ( ( ( SV1 @ SV6 )
        = $false )
      | ( ( SV6 @ ( sK5_SY11 @ SV4 @ SV1 @ SV6 ) )
        = $true )
      | ( ( sK2_SY9 @ SV1 @ SV4 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[43]) ).

thf(45,plain,
    ( ( sK1_SX0 @ sK6_Eigen @ ( sK6_Eigen @ ( sK1_SX0 @ sK6_Eigen ) ) )
    = $false ),
    inference(instantiate,[status(thm)],[26:[bind(SV3,$thf( sK6_Eigen ))]]) ).

thf(46,plain,
    ! [SV3: ( a > $o ) > a] :
      ( ( ~ ~ ! [SV7: a] :
                ~ ( sK1_SX0 @ SV3 @ SV7 )
        | ( sK1_SX0 @ SV3 @ ( sK6_Eigen @ ( sK1_SX0 @ SV3 ) ) ) )
      = $true ),
    inference(choice,[status(thm)],[26]) ).

thf(47,plain,
    ! [SV8: ( a > $o ) > a] :
      ( ( ~ ~ ! [SX0: a] :
                ~ ( sK1_SX0 @ SV8 @ SX0 )
        | ( sK1_SX0 @ SV8 @ ( sK6_Eigen @ ( sK1_SX0 @ SV8 ) ) ) )
      = $true ),
    inference(rename,[status(thm)],[46]) ).

thf(48,plain,
    ! [SV8: ( a > $o ) > a] :
      ( ( ( ~ ~ ! [SX0: a] :
                  ~ ( sK1_SX0 @ SV8 @ SX0 ) )
        = $true )
      | ( ( sK1_SX0 @ SV8 @ ( sK6_Eigen @ ( sK1_SX0 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[47]) ).

thf(49,plain,
    ! [SV8: ( a > $o ) > a] :
      ( ( ( ~ ! [SX0: a] :
                ~ ( sK1_SX0 @ SV8 @ SX0 ) )
        = $false )
      | ( ( sK1_SX0 @ SV8 @ ( sK6_Eigen @ ( sK1_SX0 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[48]) ).

thf(50,plain,
    ! [SV8: ( a > $o ) > a] :
      ( ( ( ! [SX0: a] :
              ~ ( sK1_SX0 @ SV8 @ SX0 ) )
        = $true )
      | ( ( sK1_SX0 @ SV8 @ ( sK6_Eigen @ ( sK1_SX0 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[49]) ).

thf(51,plain,
    ! [SV9: a,SV8: ( a > $o ) > a] :
      ( ( ( ~ ( sK1_SX0 @ SV8 @ SV9 ) )
        = $true )
      | ( ( sK1_SX0 @ SV8 @ ( sK6_Eigen @ ( sK1_SX0 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[50]) ).

thf(52,plain,
    ! [SV9: a,SV8: ( a > $o ) > a] :
      ( ( ( sK1_SX0 @ SV8 @ SV9 )
        = $false )
      | ( ( sK1_SX0 @ SV8 @ ( sK6_Eigen @ ( sK1_SX0 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[51]) ).

thf(53,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[26,52,45,44,41,32]) ).

thf(54,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[53]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : LCL726^5 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.05  % Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.21  % Computer : n013.cluster.edu
% 0.08/0.21  % Model    : x86_64 x86_64
% 0.08/0.21  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.21  % Memory   : 8046.5625MB
% 0.08/0.21  % OS       : Linux 6.8.0-71-generic
% 0.08/0.21  % CPULimit : 300
% 0.08/0.21  % WCLimit  : 300
% 0.08/0.21  % DateTime : Tue Oct  6 12:32:21 UTC 2026
% 0.08/0.21  % CPUTime  : 
% 0.08/0.21  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.27  
% 0.08/0.27   No.of.Axioms: 0
% 0.08/0.27  
% 0.08/0.27   Length.of.Defs: 0
% 0.08/0.27  
% 0.08/0.27   Contains.Choice.Funs: false
% 0.08/0.27  .
% 0.08/0.27  
% 0.08/0.27   *** Modified list of choice operators: sK6_Eigen ***
% 0.08/0.27  
% 0.08/0.27  ********************************
% 0.08/0.27  *   All subproblems solved!    *
% 0.08/0.27  ********************************
% 0.08/0.27  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:1,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:53,loop_count:0,foatp_calls:2,translation:fof_full)
% 0.08/0.27  
% 0.08/0.27  %**** Beginning of derivation protocol ****
% 0.08/0.27  % SZS output start CNFRefutation
% See solution above
% 0.08/0.27  
% 0.08/0.27  %**** End of derivation protocol ****
% 0.08/0.27  %**** no. of clauses in derivation: 54 ****
% 0.08/0.27  %**** clause counter: 53 ****
% 0.08/0.27  
% 0.08/0.27  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:1,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:53,loop_count:0,foatp_calls:2,translation:fof_full)
%------------------------------------------------------------------------------