TSTP Solution File: SET159+3 by Leo-III---1.7.7

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%------------------------------------------------------------------------------
% File     : Leo-III---1.7.7
% Problem  : SET159+3 : TPTP v8.1.2. Released v2.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_Leo-III %s %d

% Computer : n029.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 11:52:51 EDT 2023

% Result   : Theorem 4.30s 2.13s
% Output   : Refutation 4.30s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :   10
% Syntax   : Number of formulae    :   19 (   8 unt;   3 typ;   0 def)
%            Number of atoms       :   48 (  11 equ;   0 cnn)
%            Maximal formula atoms :   10 (   3 avg)
%            Number of connectives :  144 (   2   ~;   3   |;   9   &; 110   @)
%                                         (   5 <=>;  15  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    6 (   6   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    5 (   3 usr;   1 con; 0-2 aty)
%            Number of variables   :   39 (   0   ^;  39   !;   0   ?;  39   :)

% Comments : 
%------------------------------------------------------------------------------
thf(union_type,type,
    union: $i > $i > $i ).

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

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

thf(8,axiom,
    ! [A: $i,B: $i] :
      ( ( A = B )
    <=> ! [C: $i] :
          ( ( member @ C @ A )
        <=> ( member @ C @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',equal_member_defn) ).

thf(42,plain,
    ! [A: $i,B: $i] :
      ( ( ( A = B )
       => ! [C: $i] :
            ( ( ( member @ C @ A )
             => ( member @ C @ B ) )
            & ( ( member @ C @ B )
             => ( member @ C @ A ) ) ) )
      & ( ! [C: $i] :
            ( ( ( member @ C @ A )
             => ( member @ C @ B ) )
            & ( ( member @ C @ B )
             => ( member @ C @ A ) ) )
       => ( A = B ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).

thf(6,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
    <=> ! [C: $i] :
          ( ( member @ C @ A )
         => ( member @ C @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',subset_defn) ).

thf(33,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)],[6]) ).

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

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

thf(9,plain,
    ~ ! [A: $i,B: $i,C: $i] :
        ( ( union @ ( union @ A @ B ) @ C )
        = ( union @ A @ ( union @ B @ C ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(3,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( member @ C @ ( union @ A @ B ) )
    <=> ( ( member @ C @ A )
        | ( member @ C @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',union_defn) ).

thf(12,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( member @ C @ ( union @ A @ B ) )
       => ( ( member @ C @ A )
          | ( member @ C @ B ) ) )
      & ( ( ( member @ C @ A )
          | ( member @ C @ B ) )
       => ( member @ C @ ( union @ A @ B ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(7,axiom,
    ! [A: $i] : ( subset @ A @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',reflexivity_of_subset) ).

thf(40,plain,
    ! [A: $i] : ( subset @ A @ A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(5,axiom,
    ! [A: $i,B: $i] :
      ( ( union @ A @ B )
      = ( union @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_of_union) ).

thf(30,plain,
    ! [A: $i,B: $i] :
      ( ( union @ A @ B )
      = ( union @ B @ A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(4,axiom,
    ! [A: $i,B: $i] :
      ( ( A = B )
    <=> ( ( subset @ A @ B )
        & ( subset @ B @ A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',equal_defn) ).

thf(19,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)],[4]) ).

thf(206,plain,
    $false,
    inference(cvc4,[status(thm)],[42,33,9,12,40,30,19]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SET159+3 : TPTP v8.1.2. Released v2.2.0.
% 0.07/0.15  % Command  : run_Leo-III %s %d
% 0.15/0.36  % Computer : n029.cluster.edu
% 0.15/0.36  % Model    : x86_64 x86_64
% 0.15/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.36  % Memory   : 8042.1875MB
% 0.15/0.36  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.36  % CPULimit : 300
% 0.15/0.36  % WCLimit  : 300
% 0.15/0.36  % DateTime : Thu May 18 19:31:14 EDT 2023
% 0.15/0.37  % CPUTime  : 
% 0.93/0.90  % [INFO] 	 Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ... 
% 1.28/1.02  % [INFO] 	 Parsing done (125ms). 
% 1.28/1.03  % [INFO] 	 Running in sequential loop mode. 
% 1.74/1.24  % [INFO] 	 eprover registered as external prover. 
% 1.74/1.25  % [INFO] 	 cvc4 registered as external prover. 
% 1.74/1.25  % [INFO] 	 Scanning for conjecture ... 
% 1.88/1.30  % [INFO] 	 Found a conjecture and 6 axioms. Running axiom selection ... 
% 1.88/1.32  % [INFO] 	 Axiom selection finished. Selected 6 axioms (removed 0 axioms). 
% 1.88/1.34  % [INFO] 	 Problem is first-order (TPTP FOF). 
% 1.88/1.34  % [INFO] 	 Type checking passed. 
% 1.88/1.34  % [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 ... 
% 4.30/2.12  % External prover 'cvc4' found a proof!
% 4.30/2.12  % [INFO] 	 Killing All external provers ... 
% 4.30/2.13  % Time passed: 1591ms (effective reasoning time: 1091ms)
% 4.30/2.13  % 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)>
% 4.30/2.13  % Axioms used in derivation (6): reflexivity_of_subset, equal_member_defn, commutativity_of_union, equal_defn, union_defn, subset_defn
% 4.30/2.13  % No. of inferences in proof: 16
% 4.30/2.13  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 1591 ms resp. 1091 ms w/o parsing
% 4.30/2.15  % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 4.30/2.15  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------