TSTP Solution File: SET591+3 by Leo-III---1.7.7

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%------------------------------------------------------------------------------
% File     : Leo-III---1.7.7
% Problem  : SET591+3 : TPTP v8.1.2. Released v2.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_Leo-III %s %d

% Computer : n026.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 : Fri May 19 11:53:39 EDT 2023

% Result   : Theorem 3.20s 2.22s
% Output   : Refutation 3.33s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :   12
% Syntax   : Number of formulae    :   21 (   5 unt;   5 typ;   0 def)
%            Number of atoms       :   44 (   6 equ;   0 cnn)
%            Maximal formula atoms :    6 (   2 avg)
%            Number of connectives :  121 (  10   ~;   0   |;  10   &;  83   @)
%                                         (   4 <=>;  14  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   7 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    7 (   7   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    7 (   5 usr;   2 con; 0-2 aty)
%            Number of variables   :   32 (   0   ^;  32   !;   0   ?;  32   :)

% Comments : 
%------------------------------------------------------------------------------
thf(subset_type,type,
    subset: $i > $i > $o ).

thf(difference_type,type,
    difference: $i > $i > $i ).

thf(empty_set_type,type,
    empty_set: $i ).

thf(member_type,type,
    member: $i > $i > $o ).

thf(empty_type,type,
    empty: $i > $o ).

thf(3,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
    <=> ! [C: $i] :
          ( ( member @ C @ A )
         => ( member @ C @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subset_defn) ).

thf(14,plain,
    ! [A: $i,B: $i] :
      ( ( ( subset @ A @ B )
       => ! [C: $i] :
            ( ( member @ C @ A )
           => ( member @ C @ B ) ) )
      & ( ! [C: $i] :
            ( ( member @ C @ A )
           => ( member @ C @ B ) )
       => ( subset @ A @ B ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(4,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( member @ C @ ( difference @ A @ B ) )
    <=> ( ( member @ C @ A )
        & ~ ( member @ C @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',difference_defn) ).

thf(21,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( member @ C @ ( difference @ A @ B ) )
       => ( ( member @ C @ A )
          & ~ ( member @ C @ B ) ) )
      & ( ( ( member @ C @ A )
          & ~ ( member @ C @ B ) )
       => ( member @ C @ ( difference @ A @ B ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).

thf(1,conjecture,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ ( difference @ B @ A ) )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_th50) ).

thf(2,negated_conjecture,
    ~ ! [A: $i,B: $i] :
        ( ( subset @ A @ ( difference @ B @ A ) )
       => ( A = empty_set ) ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(9,plain,
    ~ ! [A: $i,B: $i] :
        ( ( subset @ A @ ( difference @ B @ A ) )
       => ( A = empty_set ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(7,axiom,
    ! [A: $i] : ( subset @ A @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',reflexivity_of_subset) ).

thf(41,plain,
    ! [A: $i] : ( subset @ A @ A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(5,axiom,
    ! [A: $i] :
      ~ ( member @ A @ empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',empty_set_defn) ).

thf(27,plain,
    ! [A: $i] :
      ~ ( member @ A @ empty_set ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(8,axiom,
    ! [A: $i] :
      ( ( empty @ A )
    <=> ! [B: $i] :
          ~ ( member @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',empty_defn) ).

thf(43,plain,
    ! [A: $i] :
      ( ( ( empty @ A )
       => ! [B: $i] :
            ~ ( member @ B @ A ) )
      & ( ! [B: $i] :
            ~ ( member @ B @ A )
       => ( empty @ A ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).

thf(6,axiom,
    ! [A: $i,B: $i] :
      ( ( A = B )
    <=> ( ( subset @ A @ B )
        & ( subset @ B @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equal_defn) ).

thf(30,plain,
    ! [A: $i,B: $i] :
      ( ( ( A = B )
       => ( ( subset @ A @ B )
          & ( subset @ B @ A ) ) )
      & ( ( ( subset @ A @ B )
          & ( subset @ B @ A ) )
       => ( A = B ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).

thf(48,plain,
    $false,
    inference(e,[status(thm)],[14,21,9,41,27,43,30]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.10  % Problem  : SET591+3 : TPTP v8.1.2. Released v2.2.0.
% 0.10/0.12  % Command  : run_Leo-III %s %d
% 0.11/0.33  % Computer : n026.cluster.edu
% 0.11/0.33  % Model    : x86_64 x86_64
% 0.11/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.33  % Memory   : 8042.1875MB
% 0.11/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.33  % CPULimit : 300
% 0.11/0.33  % WCLimit  : 300
% 0.11/0.33  % DateTime : Thu May 18 19:20:51 EDT 2023
% 0.11/0.33  % CPUTime  : 
% 0.97/0.93  % [INFO] 	 Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ... 
% 1.24/1.10  % [INFO] 	 Parsing done (169ms). 
% 1.24/1.11  % [INFO] 	 Running in sequential loop mode. 
% 1.83/1.47  % [INFO] 	 eprover registered as external prover. 
% 1.83/1.47  % [INFO] 	 cvc4 registered as external prover. 
% 1.83/1.48  % [INFO] 	 Scanning for conjecture ... 
% 1.97/1.56  % [INFO] 	 Found a conjecture and 6 axioms. Running axiom selection ... 
% 1.97/1.60  % [INFO] 	 Axiom selection finished. Selected 6 axioms (removed 0 axioms). 
% 1.97/1.61  % [INFO] 	 Problem is first-order (TPTP FOF). 
% 1.97/1.62  % [INFO] 	 Type checking passed. 
% 1.97/1.62  % [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 ... 
% 3.02/2.21  % External prover 'e' found a proof!
% 3.02/2.21  % [INFO] 	 Killing All external provers ... 
% 3.20/2.22  % Time passed: 1739ms (effective reasoning time: 1101ms)
% 3.20/2.22  % 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)>
% 3.20/2.22  % Axioms used in derivation (6): reflexivity_of_subset, empty_set_defn, empty_defn, difference_defn, equal_defn, subset_defn
% 3.20/2.22  % No. of inferences in proof: 16
% 3.20/2.22  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 1739 ms resp. 1101 ms w/o parsing
% 3.33/2.30  % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 3.33/2.30  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------