TSTP Solution File: SEV246^5 by Lash---1.13

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Lash---1.13
% Problem  : SEV246^5 : TPTP v8.1.2. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : lash -P picomus -M modes -p tstp -t %d %s

% Computer : n022.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Thu Aug 31 19:33:06 EDT 2023

% Result   : Theorem 201.53s 181.20s
% Output   : Proof 201.53s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :   62
% Syntax   : Number of formulae    :   74 (  15 unt;   5 typ;   3 def)
%            Number of atoms       :  184 (   3 equ;   0 cnn)
%            Maximal formula atoms :    9 (   2 avg)
%            Number of connectives :  542 ( 109   ~;  29   |;   0   &; 255   @)
%                                         (  25 <=>; 124  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   16 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   64 (  64   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   34 (  32 usr;  31 con; 0-2 aty)
%            Number of variables   :  140 (  24   ^; 116   !;   0   ?; 140   :)

% Comments : 
%------------------------------------------------------------------------------
thf(ty_eigen__1,type,
    eigen__1: $i ).

thf(ty_eigen__12,type,
    eigen__12: $i ).

thf(ty_eigen__2,type,
    eigen__2: $i ).

thf(ty_eigen__0,type,
    eigen__0: ( $i > $o ) > $i > $o ).

thf(ty_eigen__3,type,
    eigen__3: $i > $o ).

thf(h0,assumption,
    ! [X1: ( $i > $o ) > $o,X2: $i > $o] :
      ( ( X1 @ X2 )
     => ( X1 @ ( eps__0 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(eigendef_eigen__3,definition,
    ( eigen__3
    = ( eps__0
      @ ^ [X1: $i > $o] :
          ~ ( ! [X2: $i] :
                ( ( X1 @ X2 )
               => ( eigen__0 @ X1 @ X2 ) )
           => ~ ( X1 @ eigen__2 ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__3])]) ).

thf(h1,assumption,
    ! [X1: $i > $o,X2: $i] :
      ( ( X1 @ X2 )
     => ( X1 @ ( eps__1 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(eigendef_eigen__12,definition,
    ( eigen__12
    = ( eps__1
      @ ^ [X1: $i] :
          ~ ( ( eigen__3 @ X1 )
           => ~ ! [X2: $i > $o] :
                  ( ! [X3: $i] :
                      ( ( X2 @ X3 )
                     => ( eigen__0 @ X2 @ X3 ) )
                 => ~ ( X2 @ X1 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__12])]) ).

thf(eigendef_eigen__2,definition,
    ( eigen__2
    = ( eps__1
      @ ^ [X1: $i] :
          ~ ( ~ ! [X2: $i > $o] :
                  ( ! [X3: $i] :
                      ( ( X2 @ X3 )
                     => ( eigen__0 @ X2 @ X3 ) )
                 => ~ ( X2 @ X1 ) )
           => ( eigen__0
              @ ^ [X2: $i] :
                  ~ ! [X3: $i > $o] :
                      ( ! [X4: $i] :
                          ( ( X3 @ X4 )
                         => ( eigen__0 @ X3 @ X4 ) )
                     => ~ ( X3 @ X2 ) )
              @ X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__2])]) ).

thf(sP1,plain,
    ( sP1
  <=> ( eigen__0
      @ ^ [X1: $i] :
          ~ ! [X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( X2 @ X3 )
                 => ( eigen__0 @ X2 @ X3 ) )
             => ~ ( X2 @ X1 ) )
      @ eigen__1 ) ),
    introduced(definition,[new_symbols(definition,[sP1])]) ).

thf(sP2,plain,
    ( sP2
  <=> ( ! [X1: $i] :
          ( ~ ! [X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( X2 @ X3 )
                   => ( eigen__0 @ X2 @ X3 ) )
               => ~ ( X2 @ X1 ) )
         => ( eigen__0
            @ ^ [X2: $i] :
                ~ ! [X3: $i > $o] :
                    ( ! [X4: $i] :
                        ( ( X3 @ X4 )
                       => ( eigen__0 @ X3 @ X4 ) )
                   => ~ ( X3 @ X2 ) )
            @ X1 ) )
     => ! [X1: $i] :
          ( ( eigen__0
            @ ^ [X2: $i] :
                ~ ! [X3: $i > $o] :
                    ( ! [X4: $i] :
                        ( ( X3 @ X4 )
                       => ( eigen__0 @ X3 @ X4 ) )
                   => ~ ( X3 @ X2 ) )
            @ X1 )
         => ( eigen__0
            @ ( eigen__0
              @ ^ [X2: $i] :
                  ~ ! [X3: $i > $o] :
                      ( ! [X4: $i] :
                          ( ( X3 @ X4 )
                         => ( eigen__0 @ X3 @ X4 ) )
                     => ~ ( X3 @ X2 ) ) )
            @ X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP2])]) ).

thf(sP3,plain,
    ( sP3
  <=> ( ( eigen__3 @ eigen__2 )
     => ( eigen__0 @ eigen__3 @ eigen__2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP3])]) ).

thf(sP4,plain,
    ( sP4
  <=> ! [X1: $i > $o] :
        ( ! [X2: $i] :
            ( ( X1 @ X2 )
           => ( eigen__0 @ X1 @ X2 ) )
       => ~ ( X1 @ eigen__2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP4])]) ).

thf(sP5,plain,
    ( sP5
  <=> ! [X1: $i] :
        ( ( eigen__3 @ X1 )
       => ~ ! [X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( X2 @ X3 )
                 => ( eigen__0 @ X2 @ X3 ) )
             => ~ ( X2 @ X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP5])]) ).

thf(sP6,plain,
    ( sP6
  <=> ( ( eigen__0 @ eigen__3 @ eigen__2 )
     => ( eigen__0
        @ ^ [X1: $i] :
            ~ ! [X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( X2 @ X3 )
                   => ( eigen__0 @ X2 @ X3 ) )
               => ~ ( X2 @ X1 ) )
        @ eigen__2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP6])]) ).

thf(sP7,plain,
    ( sP7
  <=> ( ( eigen__3 @ eigen__12 )
     => ~ ! [X1: $i > $o] :
            ( ! [X2: $i] :
                ( ( X1 @ X2 )
               => ( eigen__0 @ X1 @ X2 ) )
           => ~ ( X1 @ eigen__12 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP7])]) ).

thf(sP8,plain,
    ( sP8
  <=> ( ! [X1: $i] :
          ( ( eigen__0
            @ ^ [X2: $i] :
                ~ ! [X3: $i > $o] :
                    ( ! [X4: $i] :
                        ( ( X3 @ X4 )
                       => ( eigen__0 @ X3 @ X4 ) )
                   => ~ ( X3 @ X2 ) )
            @ X1 )
         => ( eigen__0
            @ ( eigen__0
              @ ^ [X2: $i] :
                  ~ ! [X3: $i > $o] :
                      ( ! [X4: $i] :
                          ( ( X3 @ X4 )
                         => ( eigen__0 @ X3 @ X4 ) )
                     => ~ ( X3 @ X2 ) ) )
            @ X1 ) )
     => ~ sP1 ) ),
    introduced(definition,[new_symbols(definition,[sP8])]) ).

thf(sP9,plain,
    ( sP9
  <=> ! [X1: $i > $o] :
        ( ! [X2: $i] :
            ( ( eigen__3 @ X2 )
           => ( X1 @ X2 ) )
       => ! [X2: $i] :
            ( ( eigen__0 @ eigen__3 @ X2 )
           => ( eigen__0 @ X1 @ X2 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP9])]) ).

thf(sP10,plain,
    ( sP10
  <=> ! [X1: $i > $o] :
        ( ! [X2: $i] :
            ( ~ ! [X3: $i > $o] :
                  ( ! [X4: $i] :
                      ( ( X3 @ X4 )
                     => ( eigen__0 @ X3 @ X4 ) )
                 => ~ ( X3 @ X2 ) )
           => ( X1 @ X2 ) )
       => ! [X2: $i] :
            ( ( eigen__0
              @ ^ [X3: $i] :
                  ~ ! [X4: $i > $o] :
                      ( ! [X5: $i] :
                          ( ( X4 @ X5 )
                         => ( eigen__0 @ X4 @ X5 ) )
                     => ~ ( X4 @ X3 ) )
              @ X2 )
           => ( eigen__0 @ X1 @ X2 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP10])]) ).

thf(sP11,plain,
    ( sP11
  <=> ( sP5
     => ! [X1: $i] :
          ( ( eigen__0 @ eigen__3 @ X1 )
         => ( eigen__0
            @ ^ [X2: $i] :
                ~ ! [X3: $i > $o] :
                    ( ! [X4: $i] :
                        ( ( X3 @ X4 )
                       => ( eigen__0 @ X3 @ X4 ) )
                   => ~ ( X3 @ X2 ) )
            @ X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP11])]) ).

thf(sP12,plain,
    ( sP12
  <=> ( eigen__0 @ eigen__3 @ eigen__2 ) ),
    introduced(definition,[new_symbols(definition,[sP12])]) ).

thf(sP13,plain,
    ( sP13
  <=> ! [X1: $i] :
        ( ( eigen__3 @ X1 )
       => ( eigen__0 @ eigen__3 @ X1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP13])]) ).

thf(sP14,plain,
    ( sP14
  <=> ( ~ sP4
     => ( eigen__0
        @ ^ [X1: $i] :
            ~ ! [X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( X2 @ X3 )
                   => ( eigen__0 @ X2 @ X3 ) )
               => ~ ( X2 @ X1 ) )
        @ eigen__2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP14])]) ).

thf(sP15,plain,
    ( sP15
  <=> ( eigen__0
      @ ^ [X1: $i] :
          ~ ! [X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( X2 @ X3 )
                 => ( eigen__0 @ X2 @ X3 ) )
             => ~ ( X2 @ X1 ) )
      @ eigen__2 ) ),
    introduced(definition,[new_symbols(definition,[sP15])]) ).

thf(sP16,plain,
    ( sP16
  <=> ( eigen__3 @ eigen__12 ) ),
    introduced(definition,[new_symbols(definition,[sP16])]) ).

thf(sP17,plain,
    ( sP17
  <=> ! [X1: $i > $o,X2: $i > $o] :
        ( ! [X3: $i] :
            ( ( X1 @ X3 )
           => ( X2 @ X3 ) )
       => ! [X3: $i] :
            ( ( eigen__0 @ X1 @ X3 )
           => ( eigen__0 @ X2 @ X3 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP17])]) ).

thf(sP18,plain,
    ( sP18
  <=> ! [X1: $i > $o] :
        ( ! [X2: $i] :
            ( ( X1 @ X2 )
           => ( eigen__0 @ X1 @ X2 ) )
       => ~ ( X1 @ eigen__1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP18])]) ).

thf(sP19,plain,
    ( sP19
  <=> ! [X1: $i] :
        ( ( eigen__0 @ eigen__3 @ X1 )
       => ( eigen__0
          @ ^ [X2: $i] :
              ~ ! [X3: $i > $o] :
                  ( ! [X4: $i] :
                      ( ( X3 @ X4 )
                     => ( eigen__0 @ X3 @ X4 ) )
                 => ~ ( X3 @ X2 ) )
          @ X1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP19])]) ).

thf(sP20,plain,
    ( sP20
  <=> ! [X1: $i] :
        ( ~ ! [X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( X2 @ X3 )
                 => ( eigen__0 @ X2 @ X3 ) )
             => ~ ( X2 @ X1 ) )
       => ( eigen__0
          @ ^ [X2: $i] :
              ~ ! [X3: $i > $o] :
                  ( ! [X4: $i] :
                      ( ( X3 @ X4 )
                     => ( eigen__0 @ X3 @ X4 ) )
                 => ~ ( X3 @ X2 ) )
          @ X1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP20])]) ).

thf(sP21,plain,
    ( sP21
  <=> ! [X1: $i > $o] :
        ( ! [X2: $i] :
            ( ( X1 @ X2 )
           => ( eigen__0 @ X1 @ X2 ) )
       => ~ ( X1 @ eigen__12 ) ) ),
    introduced(definition,[new_symbols(definition,[sP21])]) ).

thf(sP22,plain,
    ( sP22
  <=> ( sP13
     => ~ ( eigen__3 @ eigen__2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP22])]) ).

thf(sP23,plain,
    ( sP23
  <=> ( eigen__3 @ eigen__2 ) ),
    introduced(definition,[new_symbols(definition,[sP23])]) ).

thf(sP24,plain,
    ( sP24
  <=> ( sP13
     => ~ sP16 ) ),
    introduced(definition,[new_symbols(definition,[sP24])]) ).

thf(sP25,plain,
    ( sP25
  <=> ! [X1: $i] :
        ( ( eigen__0
          @ ^ [X2: $i] :
              ~ ! [X3: $i > $o] :
                  ( ! [X4: $i] :
                      ( ( X3 @ X4 )
                     => ( eigen__0 @ X3 @ X4 ) )
                 => ~ ( X3 @ X2 ) )
          @ X1 )
       => ( eigen__0
          @ ( eigen__0
            @ ^ [X2: $i] :
                ~ ! [X3: $i > $o] :
                    ( ! [X4: $i] :
                        ( ( X3 @ X4 )
                       => ( eigen__0 @ X3 @ X4 ) )
                   => ~ ( X3 @ X2 ) ) )
          @ X1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP25])]) ).

thf(cTHM2A_ONE_pme,conjecture,
    ! [X1: ( $i > $o ) > $i > $o] :
      ( ! [X2: $i > $o,X3: $i > $o] :
          ( ! [X4: $i] :
              ( ( X2 @ X4 )
             => ( X3 @ X4 ) )
         => ! [X4: $i] :
              ( ( X1 @ X2 @ X4 )
             => ( X1 @ X3 @ X4 ) ) )
     => ! [X2: $i] :
          ( ( X1
            @ ^ [X3: $i] :
                ~ ! [X4: $i > $o] :
                    ( ! [X5: $i] :
                        ( ( X4 @ X5 )
                       => ( X1 @ X4 @ X5 ) )
                   => ~ ( X4 @ X3 ) )
            @ X2 )
         => ~ ! [X3: $i > $o] :
                ( ! [X4: $i] :
                    ( ( X3 @ X4 )
                   => ( X1 @ X3 @ X4 ) )
               => ~ ( X3 @ X2 ) ) ) ) ).

thf(h2,negated_conjecture,
    ~ ! [X1: ( $i > $o ) > $i > $o] :
        ( ! [X2: $i > $o,X3: $i > $o] :
            ( ! [X4: $i] :
                ( ( X2 @ X4 )
               => ( X3 @ X4 ) )
           => ! [X4: $i] :
                ( ( X1 @ X2 @ X4 )
               => ( X1 @ X3 @ X4 ) ) )
       => ! [X2: $i] :
            ( ( X1
              @ ^ [X3: $i] :
                  ~ ! [X4: $i > $o] :
                      ( ! [X5: $i] :
                          ( ( X4 @ X5 )
                         => ( X1 @ X4 @ X5 ) )
                     => ~ ( X4 @ X3 ) )
              @ X2 )
           => ~ ! [X3: $i > $o] :
                  ( ! [X4: $i] :
                      ( ( X3 @ X4 )
                     => ( X1 @ X3 @ X4 ) )
                 => ~ ( X3 @ X2 ) ) ) ),
    inference(assume_negation,[status(cth)],[cTHM2A_ONE_pme]) ).

thf(h3,assumption,
    ~ ( sP17
     => ! [X1: $i] :
          ( ( eigen__0
            @ ^ [X2: $i] :
                ~ ! [X3: $i > $o] :
                    ( ! [X4: $i] :
                        ( ( X3 @ X4 )
                       => ( eigen__0 @ X3 @ X4 ) )
                   => ~ ( X3 @ X2 ) )
            @ X1 )
         => ~ ! [X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( X2 @ X3 )
                   => ( eigen__0 @ X2 @ X3 ) )
               => ~ ( X2 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h4,assumption,
    sP17,
    introduced(assumption,[]) ).

thf(h5,assumption,
    ~ ! [X1: $i] :
        ( ( eigen__0
          @ ^ [X2: $i] :
              ~ ! [X3: $i > $o] :
                  ( ! [X4: $i] :
                      ( ( X3 @ X4 )
                     => ( eigen__0 @ X3 @ X4 ) )
                 => ~ ( X3 @ X2 ) )
          @ X1 )
       => ~ ! [X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( X2 @ X3 )
                 => ( eigen__0 @ X2 @ X3 ) )
             => ~ ( X2 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h6,assumption,
    ~ ( sP1
     => ~ sP18 ),
    introduced(assumption,[]) ).

thf(h7,assumption,
    sP1,
    introduced(assumption,[]) ).

thf(h8,assumption,
    sP18,
    introduced(assumption,[]) ).

thf(1,plain,
    ( ~ sP6
    | ~ sP12
    | sP15 ),
    inference(prop_rule,[status(thm)],]) ).

thf(2,plain,
    ( ~ sP24
    | ~ sP13
    | ~ sP16 ),
    inference(prop_rule,[status(thm)],]) ).

thf(3,plain,
    ( ~ sP21
    | sP24 ),
    inference(all_rule,[status(thm)],]) ).

thf(4,plain,
    ( sP7
    | sP21 ),
    inference(prop_rule,[status(thm)],]) ).

thf(5,plain,
    ( sP7
    | sP16 ),
    inference(prop_rule,[status(thm)],]) ).

thf(6,plain,
    ( ~ sP19
    | sP6 ),
    inference(all_rule,[status(thm)],]) ).

thf(7,plain,
    ( sP5
    | ~ sP7 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h1])],[h1,eigendef_eigen__12]) ).

thf(8,plain,
    ( ~ sP11
    | ~ sP5
    | sP19 ),
    inference(prop_rule,[status(thm)],]) ).

thf(9,plain,
    ( ~ sP9
    | sP11 ),
    inference(all_rule,[status(thm)],]) ).

thf(10,plain,
    ( ~ sP17
    | sP9 ),
    inference(all_rule,[status(thm)],]) ).

thf(11,plain,
    ( ~ sP3
    | ~ sP23
    | sP12 ),
    inference(prop_rule,[status(thm)],]) ).

thf(12,plain,
    ( ~ sP13
    | sP3 ),
    inference(all_rule,[status(thm)],]) ).

thf(13,plain,
    ( ~ sP2
    | ~ sP20
    | sP25 ),
    inference(prop_rule,[status(thm)],]) ).

thf(14,plain,
    ( ~ sP10
    | sP2 ),
    inference(all_rule,[status(thm)],]) ).

thf(15,plain,
    ( ~ sP8
    | ~ sP25
    | ~ sP1 ),
    inference(prop_rule,[status(thm)],]) ).

thf(16,plain,
    ( sP22
    | sP23 ),
    inference(prop_rule,[status(thm)],]) ).

thf(17,plain,
    ( sP22
    | sP13 ),
    inference(prop_rule,[status(thm)],]) ).

thf(18,plain,
    ( sP4
    | ~ sP22 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h0])],[h0,eigendef_eigen__3]) ).

thf(19,plain,
    ( sP14
    | ~ sP15 ),
    inference(prop_rule,[status(thm)],]) ).

thf(20,plain,
    ( sP14
    | ~ sP4 ),
    inference(prop_rule,[status(thm)],]) ).

thf(21,plain,
    ( sP20
    | ~ sP14 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h1])],[h1,eigendef_eigen__2]) ).

thf(22,plain,
    ( ~ sP17
    | sP10 ),
    inference(all_rule,[status(thm)],]) ).

thf(23,plain,
    ( ~ sP18
    | sP8 ),
    inference(all_rule,[status(thm)],]) ).

thf(24,plain,
    $false,
    inference(prop_unsat,[status(thm),assumptions([h7,h8,h6,h4,h5,h3,h2,h1,h0])],[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,h4,h7,h8]) ).

thf(25,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h6,h4,h5,h3,h2,h1,h0]),tab_negimp(discharge,[h7,h8])],[h6,24,h7,h8]) ).

thf(26,plain,
    $false,
    inference(tab_negall,[status(thm),assumptions([h4,h5,h3,h2,h1,h0]),tab_negall(discharge,[h6]),tab_negall(eigenvar,eigen__1)],[h5,25,h6]) ).

thf(27,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h3,h2,h1,h0]),tab_negimp(discharge,[h4,h5])],[h3,26,h4,h5]) ).

thf(28,plain,
    $false,
    inference(tab_negall,[status(thm),assumptions([h2,h1,h0]),tab_negall(discharge,[h3]),tab_negall(eigenvar,eigen__0)],[h2,27,h3]) ).

thf(29,plain,
    $false,
    inference(eigenvar_choice,[status(thm),assumptions([h2,h0]),eigenvar_choice(discharge,[h1])],[28,h1]) ).

thf(30,plain,
    $false,
    inference(eigenvar_choice,[status(thm),assumptions([h2]),eigenvar_choice(discharge,[h0])],[29,h0]) ).

thf(0,theorem,
    ! [X1: ( $i > $o ) > $i > $o] :
      ( ! [X2: $i > $o,X3: $i > $o] :
          ( ! [X4: $i] :
              ( ( X2 @ X4 )
             => ( X3 @ X4 ) )
         => ! [X4: $i] :
              ( ( X1 @ X2 @ X4 )
             => ( X1 @ X3 @ X4 ) ) )
     => ! [X2: $i] :
          ( ( X1
            @ ^ [X3: $i] :
                ~ ! [X4: $i > $o] :
                    ( ! [X5: $i] :
                        ( ( X4 @ X5 )
                       => ( X1 @ X4 @ X5 ) )
                   => ~ ( X4 @ X3 ) )
            @ X2 )
         => ~ ! [X3: $i > $o] :
                ( ! [X4: $i] :
                    ( ( X3 @ X4 )
                   => ( X1 @ X3 @ X4 ) )
               => ~ ( X3 @ X2 ) ) ) ),
    inference(contra,[status(thm),contra(discharge,[h2])],[28,h2]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : SEV246^5 : TPTP v8.1.2. Released v4.0.0.
% 0.00/0.12  % Command  : lash -P picomus -M modes -p tstp -t %d %s
% 0.17/0.34  % Computer : n022.cluster.edu
% 0.17/0.34  % Model    : x86_64 x86_64
% 0.17/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.34  % Memory   : 8042.1875MB
% 0.17/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.17/0.34  % CPULimit : 300
% 0.17/0.34  % WCLimit  : 300
% 0.17/0.34  % DateTime : Thu Aug 24 03:10:41 EDT 2023
% 0.17/0.34  % CPUTime  : 
% 201.53/181.20  % SZS status Theorem
% 201.53/181.20  % Mode: cade22grackle2x2d0b
% 201.53/181.20  % Steps: 115
% 201.53/181.20  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------