TSTP Solution File: SET927+1 by Leo-III---1.7.7

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%------------------------------------------------------------------------------
% File     : Leo-III---1.7.7
% Problem  : SET927+1 : TPTP v8.1.2. Released v3.2.0.
% 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 11:54:52 EDT 2023

% Result   : Theorem 3.03s 1.84s
% Output   : Refutation 3.24s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :   11
% Syntax   : Number of formulae    :   19 (   7 unt;   5 typ;   0 def)
%            Number of atoms       :   39 (  16 equ;   0 cnn)
%            Maximal formula atoms :    8 (   2 avg)
%            Number of connectives :  121 (  13   ~;   7   |;   9   &;  83   @)
%                                         (   3 <=>;   6  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   11 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    8 (   8   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    7 (   5 usr;   1 con; 0-2 aty)
%            Number of variables   :   27 (   0   ^;  23   !;   4   ?;  27   :)

% Comments : 
%------------------------------------------------------------------------------
thf(set_difference_type,type,
    set_difference: $i > $i > $i ).

thf(unordered_pair_type,type,
    unordered_pair: $i > $i > $i ).

thf(singleton_type,type,
    singleton: $i > $i ).

thf(in_type,type,
    in: $i > $i > $o ).

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

thf(5,axiom,
    ? [A: $i] : ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(25,plain,
    ? [A: $i] : ( empty @ A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(3,axiom,
    ! [A: $i,B: $i] :
      ( ( unordered_pair @ A @ B )
      = ( unordered_pair @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

thf(20,plain,
    ! [A: $i,B: $i] :
      ( ( unordered_pair @ A @ B )
      = ( unordered_pair @ B @ A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(6,axiom,
    ? [A: $i] :
      ~ ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(27,plain,
    ? [A: $i] :
      ~ ( empty @ A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).

thf(4,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(23,plain,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).

thf(1,conjecture,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
        = ( singleton @ A ) )
    <=> ( ~ ( in @ A @ C )
        & ( ( in @ B @ C )
          | ( A = B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t70_zfmisc_1) ).

thf(2,negated_conjecture,
    ~ ! [A: $i,B: $i,C: $i] :
        ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
          = ( singleton @ A ) )
      <=> ( ~ ( in @ A @ C )
          & ( ( in @ B @ C )
            | ( A = B ) ) ) ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(8,plain,
    ~ ! [A: $i,B: $i,C: $i] :
        ( ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
            = ( singleton @ A ) )
         => ( ~ ( in @ A @ C )
            & ( ( in @ B @ C )
              | ( A = B ) ) ) )
        & ( ( ~ ( in @ A @ C )
            & ( ( in @ B @ C )
              | ( A = B ) ) )
         => ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
            = ( singleton @ A ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(7,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
        = ( singleton @ A ) )
    <=> ( ~ ( in @ A @ C )
        & ( ( in @ B @ C )
          | ( A = B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l39_zfmisc_1) ).

thf(30,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
          = ( singleton @ A ) )
       => ( ~ ( in @ A @ C )
          & ( ( in @ B @ C )
            | ( A = B ) ) ) )
      & ( ( ~ ( in @ A @ C )
          & ( ( in @ B @ C )
            | ( A = B ) ) )
       => ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
          = ( singleton @ A ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(42,plain,
    $false,
    inference(cvc4,[status(thm)],[25,20,27,23,8,30]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SET927+1 : TPTP v8.1.2. Released v3.2.0.
% 0.07/0.15  % Command  : run_Leo-III %s %d
% 0.16/0.36  % Computer : n029.cluster.edu
% 0.16/0.36  % Model    : x86_64 x86_64
% 0.16/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.36  % Memory   : 8042.1875MB
% 0.16/0.36  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.16/0.36  % CPULimit : 300
% 0.16/0.36  % WCLimit  : 300
% 0.16/0.36  % DateTime : Thu May 18 19:32:29 EDT 2023
% 0.16/0.36  % CPUTime  : 
% 0.92/0.92  % [INFO] 	 Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ... 
% 1.19/1.05  % [INFO] 	 Parsing done (129ms). 
% 1.19/1.06  % [INFO] 	 Running in sequential loop mode. 
% 1.75/1.33  % [INFO] 	 eprover registered as external prover. 
% 1.75/1.34  % [INFO] 	 cvc4 registered as external prover. 
% 1.75/1.34  % [INFO] 	 Scanning for conjecture ... 
% 1.95/1.40  % [INFO] 	 Found a conjecture and 5 axioms. Running axiom selection ... 
% 2.09/1.43  % [INFO] 	 Axiom selection finished. Selected 5 axioms (removed 0 axioms). 
% 2.09/1.44  % [INFO] 	 Problem is first-order (TPTP FOF). 
% 2.09/1.44  % [INFO] 	 Type checking passed. 
% 2.19/1.45  % [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 ... 
% 3.03/1.84  % External prover 'cvc4' found a proof!
% 3.03/1.84  % [INFO] 	 Killing All external provers ... 
% 3.03/1.84  % Time passed: 1288ms (effective reasoning time: 774ms)
% 3.03/1.84  % 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)>
% 3.03/1.84  % Axioms used in derivation (5): commutativity_k2_tarski, rc1_xboole_0, l39_zfmisc_1, rc2_xboole_0, antisymmetry_r2_hidden
% 3.03/1.84  % No. of inferences in proof: 14
% 3.03/1.84  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : 1288 ms resp. 774 ms w/o parsing
% 3.24/1.93  % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 3.24/1.93  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------