TSTP Solution File: SYO540^1 by Leo-III---1.7.12

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%------------------------------------------------------------------------------
% File     : Leo-III---1.7.12
% Problem  : SYO540^1 : TPTP v8.2.0. Released v5.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_Leo-III %s %d

% Computer : n018.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 : Tue May 21 08:57:19 EDT 2024

% Result   : Theorem 2.74s 1.66s
% Output   : Refutation 2.74s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :    7
% Syntax   : Number of formulae    :   22 (  11 unt;   4 typ;   1 def)
%            Number of atoms       :   81 (  52 equ;   0 cnn)
%            Maximal formula atoms :    8 (   4 avg)
%            Number of connectives :  103 (  25   ~;  24   |;  28   &;  25   @)
%                                         (   0 <=>;   1  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    7 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    8 (   8   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    7 (   4 usr;   4 con; 0-3 aty)
%            Number of variables   :   33 (  19   ^  12   !;   2   ?;  33   :)

% Comments : 
%------------------------------------------------------------------------------
thf(eps_type,type,
    eps: ( $i > $o ) > $i ).

thf(if_type,type,
    if: $o > $i > $i > $i ).

thf(if_def,definition,
    ( if
    = ( ^ [A: $o,B: $i,C: $i] :
          ( eps
          @ ^ [D: $i] :
              ( ( A
                & ( D = B ) )
              | ( ~ A
                & ( D = C ) ) ) ) ) ) ).

thf(sk1_type,type,
    sk1: $o ).

thf(sk2_type,type,
    sk2: $i ).

thf(11,axiom,
    ? [A: ( $i > $o ) > $i] :
    ! [B: $i > $o] :
      ( ? [C: $i] : ( B @ C )
     => ( B @ ( A @ B ) ) ),
    introduced(axiom_of_choice) ).

thf(37,plain,
    ! [A: $i] :
      ( ( A != sk2 )
      | ( ( eps
          @ ^ [B: $i] : ( B = sk2 ) )
        = sk2 ) ),
    inference(choice,[status(esa)],[11]) ).

thf(38,plain,
    ! [A: $i] :
      ( ( A != sk2 )
      | ( ( eps
          @ ^ [B: $i] : ( B = sk2 ) )
        = sk2 ) ),
    inference(lifteq,[status(thm)],[37]) ).

thf(39,plain,
    ( ( eps
      @ ^ [A: $i] : ( A = sk2 ) )
    = sk2 ),
    inference(simp,[status(thm)],[38]) ).

thf(1,conjecture,
    ! [A: $o,B: $i] :
      ( ( if @ A @ B @ B )
      = B ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',conj) ).

thf(2,negated_conjecture,
    ~ ! [A: $o,B: $i] :
        ( ( if @ A @ B @ B )
        = B ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(4,plain,
    ~ ! [A: $o,B: $i] :
        ( ( eps
          @ ^ [C: $i] :
              ( ( A
                & ( C = B ) )
              | ( ~ A
                & ( C = B ) ) ) )
        = B ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(5,plain,
    ( ( eps
      @ ^ [A: $i] :
          ( ( sk1
            & ( A = sk2 ) )
          | ( ~ sk1
            & ( A = sk2 ) ) ) )
   != sk2 ),
    inference(cnf,[status(esa)],[4]) ).

thf(6,plain,
    ( ( eps
      @ ^ [A: $i] :
          ( ( sk1
            & ( A = sk2 ) )
          | ( ~ sk1
            & ( A = sk2 ) ) ) )
   != sk2 ),
    inference(lifteq,[status(thm)],[5]) ).

thf(12,plain,
    ! [A: $i] :
      ( ~ ( ( sk1
            & ( A = sk2 ) )
          | ( ~ sk1
            & ( A = sk2 ) ) )
      | ( sk1
        & ( ( eps
            @ ^ [B: $i] :
                ( ( sk1
                  & ( B = sk2 ) )
                | ( ~ sk1
                  & ( B = sk2 ) ) ) )
          = sk2 ) )
      | ( ~ sk1
        & ( ( eps
            @ ^ [B: $i] :
                ( ( sk1
                  & ( B = sk2 ) )
                | ( ~ sk1
                  & ( B = sk2 ) ) ) )
          = sk2 ) ) ),
    inference(choice,[status(esa)],[11]) ).

thf(13,plain,
    ! [A: $i] :
      ( ( ( eps
          @ ^ [B: $i] :
              ( ( sk1
                & ( B = sk2 ) )
              | ( ~ sk1
                & ( B = sk2 ) ) ) )
        = sk2 )
      | ( ( eps
          @ ^ [B: $i] :
              ( ( sk1
                & ( B = sk2 ) )
              | ( ~ sk1
                & ( B = sk2 ) ) ) )
        = sk2 )
      | sk1
      | ( A != sk2 ) ),
    inference(cnf,[status(esa)],[12]) ).

thf(22,plain,
    ! [A: $i] :
      ( ( ( eps
          @ ^ [B: $i] :
              ( ( sk1
                & ( B = sk2 ) )
              | ( ~ sk1
                & ( B = sk2 ) ) ) )
        = sk2 )
      | ( ( eps
          @ ^ [B: $i] :
              ( ( sk1
                & ( B = sk2 ) )
              | ( ~ sk1
                & ( B = sk2 ) ) ) )
        = sk2 )
      | ( A != sk2 )
      | sk1 ),
    inference(lifteq,[status(thm)],[13]) ).

thf(23,plain,
    ( ( ( eps
        @ ^ [A: $i] :
            ( ( sk1
              & ( A = sk2 ) )
            | ( ~ sk1
              & ( A = sk2 ) ) ) )
      = sk2 )
    | sk1 ),
    inference(simp,[status(thm)],[22]) ).

thf(34,plain,
    sk1,
    inference(simplifyReflect,[status(thm)],[23,6]) ).

thf(35,plain,
    ( ( eps
      @ ^ [A: $i] :
          ( ( $true
            & ( A = sk2 ) )
          | ( ~ $true
            & ( A = sk2 ) ) ) )
   != sk2 ),
    inference(rewrite,[status(thm)],[6,34]) ).

thf(36,plain,
    ( ( eps
      @ ^ [A: $i] : ( A = sk2 ) )
   != sk2 ),
    inference(simp,[status(thm)],[35]) ).

thf(40,plain,
    $false,
    inference(simplifyReflect,[status(thm)],[39,36]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.08  % Problem  : SYO540^1 : TPTP v8.2.0. Released v5.2.0.
% 0.03/0.09  % Command  : run_Leo-III %s %d
% 0.07/0.28  % Computer : n018.cluster.edu
% 0.07/0.28  % Model    : x86_64 x86_64
% 0.07/0.28  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.28  % Memory   : 8042.1875MB
% 0.07/0.28  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.07/0.28  % CPULimit : 300
% 0.07/0.28  % WCLimit  : 300
% 0.07/0.28  % DateTime : Mon May 20 10:40:53 EDT 2024
% 0.07/0.28  % CPUTime  : 
% 0.77/0.78  % [INFO] 	 Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ... 
% 1.04/0.89  % [INFO] 	 Parsing done (107ms). 
% 1.04/0.89  % [INFO] 	 Running in sequential loop mode. 
% 1.33/1.12  % [INFO] 	 eprover registered as external prover. 
% 1.33/1.12  % [INFO] 	 cvc4 registered as external prover. 
% 1.33/1.13  % [INFO] 	 Scanning for conjecture ... 
% 1.53/1.18  % [INFO] 	 Found a conjecture (or negated_conjecture) and 1 axioms. Running axiom selection ... 
% 1.64/1.20  % [INFO] 	 Axiom selection finished. Selected 1 axioms (removed 0 axioms). 
% 1.64/1.21  % [INFO] 	 Problem is higher-order (TPTP THF). 
% 1.64/1.21  % [INFO] 	 Type checking passed. 
% 1.64/1.21  % [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 ... 
% 2.74/1.65  % [INFO] 	 Killing All external provers ... 
% 2.74/1.66  % Time passed: 1215ms (effective reasoning time: 758ms)
% 2.74/1.66  % 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)>
% 2.74/1.66  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1215 ms resp. 758 ms w/o parsing
% 2.74/1.74  % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 2.74/1.74  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------