TSTP Solution File: SEU267+2 by iProver---3.8

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : iProver---3.8
% Problem  : SEU267+2 : TPTP v8.1.2. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_iprover %s %d THM

% Computer : n017.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 17:05:20 EDT 2023

% Result   : Theorem 9.62s 2.16s
% Output   : CNFRefutation 9.62s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   15
%            Number of leaves      :    9
% Syntax   : Number of formulae    :   52 (  16 unt;   0 def)
%            Number of atoms       :  146 ( 145 equ)
%            Maximal formula atoms :    7 (   2 avg)
%            Number of connectives :  170 (  76   ~;  59   |;  18   &)
%                                         (   6 <=>;  11  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   11 (   5 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of predicates  :    2 (   0 usr;   1 prp; 0-2 aty)
%            Number of functors    :   11 (  11 usr;   2 con; 0-2 aty)
%            Number of variables   :  172 (   5 sgn; 126   !;  24   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f10,axiom,
    ! [X0,X1] : unordered_pair(X0,X1) = unordered_pair(X1,X0),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

fof(f26,axiom,
    ! [X0] :
      ( ? [X1,X2] : ordered_pair(X1,X2) = X0
     => ! [X1] :
          ( pair_first(X0) = X1
        <=> ! [X2,X3] :
              ( ordered_pair(X2,X3) = X0
             => X1 = X2 ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_mcart_1) ).

fof(f36,axiom,
    ! [X0] :
      ( ? [X1,X2] : ordered_pair(X1,X2) = X0
     => ! [X1] :
          ( pair_second(X0) = X1
        <=> ! [X2,X3] :
              ( ordered_pair(X2,X3) = X0
             => X1 = X3 ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d2_mcart_1) ).

fof(f60,axiom,
    ! [X0,X1] : ordered_pair(X0,X1) = unordered_pair(unordered_pair(X0,X1),singleton(X0)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d5_tarski) ).

fof(f317,axiom,
    ! [X0] : singleton(X0) = unordered_pair(X0,X0),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t69_enumset1) ).

fof(f325,conjecture,
    ! [X0,X1] :
      ( pair_second(ordered_pair(X0,X1)) = X1
      & pair_first(ordered_pair(X0,X1)) = X0 ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t7_mcart_1) ).

fof(f326,negated_conjecture,
    ~ ! [X0,X1] :
        ( pair_second(ordered_pair(X0,X1)) = X1
        & pair_first(ordered_pair(X0,X1)) = X0 ),
    inference(negated_conjecture,[],[f325]) ).

fof(f344,plain,
    ! [X0] :
      ( ? [X1,X2] : ordered_pair(X1,X2) = X0
     => ! [X3] :
          ( pair_first(X0) = X3
        <=> ! [X4,X5] :
              ( ordered_pair(X4,X5) = X0
             => X3 = X4 ) ) ),
    inference(rectify,[],[f26]) ).

fof(f345,plain,
    ! [X0] :
      ( ? [X1,X2] : ordered_pair(X1,X2) = X0
     => ! [X3] :
          ( pair_second(X0) = X3
        <=> ! [X4,X5] :
              ( ordered_pair(X4,X5) = X0
             => X3 = X5 ) ) ),
    inference(rectify,[],[f36]) ).

fof(f384,plain,
    ! [X0] :
      ( ! [X3] :
          ( pair_first(X0) = X3
        <=> ! [X4,X5] :
              ( X3 = X4
              | ordered_pair(X4,X5) != X0 ) )
      | ! [X1,X2] : ordered_pair(X1,X2) != X0 ),
    inference(ennf_transformation,[],[f344]) ).

fof(f389,plain,
    ! [X0] :
      ( ! [X3] :
          ( pair_second(X0) = X3
        <=> ! [X4,X5] :
              ( X3 = X5
              | ordered_pair(X4,X5) != X0 ) )
      | ! [X1,X2] : ordered_pair(X1,X2) != X0 ),
    inference(ennf_transformation,[],[f345]) ).

fof(f667,plain,
    ? [X0,X1] :
      ( pair_second(ordered_pair(X0,X1)) != X1
      | pair_first(ordered_pair(X0,X1)) != X0 ),
    inference(ennf_transformation,[],[f326]) ).

fof(f738,plain,
    ! [X0] :
      ( ! [X3] :
          ( ( pair_first(X0) = X3
            | ? [X4,X5] :
                ( X3 != X4
                & ordered_pair(X4,X5) = X0 ) )
          & ( ! [X4,X5] :
                ( X3 = X4
                | ordered_pair(X4,X5) != X0 )
            | pair_first(X0) != X3 ) )
      | ! [X1,X2] : ordered_pair(X1,X2) != X0 ),
    inference(nnf_transformation,[],[f384]) ).

fof(f739,plain,
    ! [X0] :
      ( ! [X1] :
          ( ( pair_first(X0) = X1
            | ? [X2,X3] :
                ( X1 != X2
                & ordered_pair(X2,X3) = X0 ) )
          & ( ! [X4,X5] :
                ( X1 = X4
                | ordered_pair(X4,X5) != X0 )
            | pair_first(X0) != X1 ) )
      | ! [X6,X7] : ordered_pair(X6,X7) != X0 ),
    inference(rectify,[],[f738]) ).

fof(f740,plain,
    ! [X0,X1] :
      ( ? [X2,X3] :
          ( X1 != X2
          & ordered_pair(X2,X3) = X0 )
     => ( sK20(X0,X1) != X1
        & ordered_pair(sK20(X0,X1),sK21(X0,X1)) = X0 ) ),
    introduced(choice_axiom,[]) ).

fof(f741,plain,
    ! [X0] :
      ( ! [X1] :
          ( ( pair_first(X0) = X1
            | ( sK20(X0,X1) != X1
              & ordered_pair(sK20(X0,X1),sK21(X0,X1)) = X0 ) )
          & ( ! [X4,X5] :
                ( X1 = X4
                | ordered_pair(X4,X5) != X0 )
            | pair_first(X0) != X1 ) )
      | ! [X6,X7] : ordered_pair(X6,X7) != X0 ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK20,sK21])],[f739,f740]) ).

fof(f775,plain,
    ! [X0] :
      ( ! [X3] :
          ( ( pair_second(X0) = X3
            | ? [X4,X5] :
                ( X3 != X5
                & ordered_pair(X4,X5) = X0 ) )
          & ( ! [X4,X5] :
                ( X3 = X5
                | ordered_pair(X4,X5) != X0 )
            | pair_second(X0) != X3 ) )
      | ! [X1,X2] : ordered_pair(X1,X2) != X0 ),
    inference(nnf_transformation,[],[f389]) ).

fof(f776,plain,
    ! [X0] :
      ( ! [X1] :
          ( ( pair_second(X0) = X1
            | ? [X2,X3] :
                ( X1 != X3
                & ordered_pair(X2,X3) = X0 ) )
          & ( ! [X4,X5] :
                ( X1 = X5
                | ordered_pair(X4,X5) != X0 )
            | pair_second(X0) != X1 ) )
      | ! [X6,X7] : ordered_pair(X6,X7) != X0 ),
    inference(rectify,[],[f775]) ).

fof(f777,plain,
    ! [X0,X1] :
      ( ? [X2,X3] :
          ( X1 != X3
          & ordered_pair(X2,X3) = X0 )
     => ( sK34(X0,X1) != X1
        & ordered_pair(sK33(X0,X1),sK34(X0,X1)) = X0 ) ),
    introduced(choice_axiom,[]) ).

fof(f778,plain,
    ! [X0] :
      ( ! [X1] :
          ( ( pair_second(X0) = X1
            | ( sK34(X0,X1) != X1
              & ordered_pair(sK33(X0,X1),sK34(X0,X1)) = X0 ) )
          & ( ! [X4,X5] :
                ( X1 = X5
                | ordered_pair(X4,X5) != X0 )
            | pair_second(X0) != X1 ) )
      | ! [X6,X7] : ordered_pair(X6,X7) != X0 ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK33,sK34])],[f776,f777]) ).

fof(f1050,plain,
    ( ? [X0,X1] :
        ( pair_second(ordered_pair(X0,X1)) != X1
        | pair_first(ordered_pair(X0,X1)) != X0 )
   => ( sK133 != pair_second(ordered_pair(sK132,sK133))
      | sK132 != pair_first(ordered_pair(sK132,sK133)) ) ),
    introduced(choice_axiom,[]) ).

fof(f1051,plain,
    ( sK133 != pair_second(ordered_pair(sK132,sK133))
    | sK132 != pair_first(ordered_pair(sK132,sK133)) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK132,sK133])],[f667,f1050]) ).

fof(f1078,plain,
    ! [X0,X1] : unordered_pair(X0,X1) = unordered_pair(X1,X0),
    inference(cnf_transformation,[],[f10]) ).

fof(f1143,plain,
    ! [X0,X1,X6,X7,X4,X5] :
      ( X1 = X4
      | ordered_pair(X4,X5) != X0
      | pair_first(X0) != X1
      | ordered_pair(X6,X7) != X0 ),
    inference(cnf_transformation,[],[f741]) ).

fof(f1179,plain,
    ! [X0,X1,X6,X7,X4,X5] :
      ( X1 = X5
      | ordered_pair(X4,X5) != X0
      | pair_second(X0) != X1
      | ordered_pair(X6,X7) != X0 ),
    inference(cnf_transformation,[],[f778]) ).

fof(f1288,plain,
    ! [X0,X1] : ordered_pair(X0,X1) = unordered_pair(unordered_pair(X0,X1),singleton(X0)),
    inference(cnf_transformation,[],[f60]) ).

fof(f1721,plain,
    ! [X0] : singleton(X0) = unordered_pair(X0,X0),
    inference(cnf_transformation,[],[f317]) ).

fof(f1732,plain,
    ( sK133 != pair_second(ordered_pair(sK132,sK133))
    | sK132 != pair_first(ordered_pair(sK132,sK133)) ),
    inference(cnf_transformation,[],[f1051]) ).

fof(f1761,plain,
    ! [X0,X1] : ordered_pair(X0,X1) = unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0)),
    inference(definition_unfolding,[],[f1288,f1721]) ).

fof(f1791,plain,
    ! [X0,X1,X6,X7,X4,X5] :
      ( X1 = X4
      | unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4)) != X0
      | pair_first(X0) != X1
      | unordered_pair(unordered_pair(X6,X7),unordered_pair(X6,X6)) != X0 ),
    inference(definition_unfolding,[],[f1143,f1761,f1761]) ).

fof(f1806,plain,
    ! [X0,X1,X6,X7,X4,X5] :
      ( X1 = X5
      | unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4)) != X0
      | pair_second(X0) != X1
      | unordered_pair(unordered_pair(X6,X7),unordered_pair(X6,X6)) != X0 ),
    inference(definition_unfolding,[],[f1179,f1761,f1761]) ).

fof(f1949,plain,
    ( sK133 != pair_second(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132)))
    | sK132 != pair_first(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) ),
    inference(definition_unfolding,[],[f1732,f1761,f1761]) ).

fof(f1991,plain,
    ! [X1,X6,X7,X4,X5] :
      ( X1 = X4
      | pair_first(unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4))) != X1
      | unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4)) != unordered_pair(unordered_pair(X6,X7),unordered_pair(X6,X6)) ),
    inference(equality_resolution,[],[f1791]) ).

fof(f1992,plain,
    ! [X6,X7,X4,X5] :
      ( pair_first(unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4))) = X4
      | unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4)) != unordered_pair(unordered_pair(X6,X7),unordered_pair(X6,X6)) ),
    inference(equality_resolution,[],[f1991]) ).

fof(f2012,plain,
    ! [X1,X6,X7,X4,X5] :
      ( X1 = X5
      | pair_second(unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4))) != X1
      | unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4)) != unordered_pair(unordered_pair(X6,X7),unordered_pair(X6,X6)) ),
    inference(equality_resolution,[],[f1806]) ).

fof(f2013,plain,
    ! [X6,X7,X4,X5] :
      ( pair_second(unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4))) = X5
      | unordered_pair(unordered_pair(X4,X5),unordered_pair(X4,X4)) != unordered_pair(unordered_pair(X6,X7),unordered_pair(X6,X6)) ),
    inference(equality_resolution,[],[f2012]) ).

cnf(c_61,plain,
    unordered_pair(X0,X1) = unordered_pair(X1,X0),
    inference(cnf_transformation,[],[f1078]) ).

cnf(c_128,plain,
    ( unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0)) != unordered_pair(unordered_pair(X2,X3),unordered_pair(X2,X2))
    | pair_first(unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0))) = X0 ),
    inference(cnf_transformation,[],[f1992]) ).

cnf(c_163,plain,
    ( unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0)) != unordered_pair(unordered_pair(X2,X3),unordered_pair(X2,X2))
    | pair_second(unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0))) = X1 ),
    inference(cnf_transformation,[],[f2013]) ).

cnf(c_711,negated_conjecture,
    ( pair_first(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) != sK132
    | pair_second(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) != sK133 ),
    inference(cnf_transformation,[],[f1949]) ).

cnf(c_1626,plain,
    ( pair_second(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) != sK133
    | pair_first(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) != sK132 ),
    inference(prop_impl_just,[status(thm)],[c_711]) ).

cnf(c_1627,plain,
    ( pair_first(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) != sK132
    | pair_second(unordered_pair(unordered_pair(sK132,sK133),unordered_pair(sK132,sK132))) != sK133 ),
    inference(renaming,[status(thm)],[c_1626]) ).

cnf(c_9103,plain,
    ( pair_first(unordered_pair(unordered_pair(sK133,sK132),unordered_pair(sK132,sK132))) != sK132
    | pair_second(unordered_pair(unordered_pair(sK133,sK132),unordered_pair(sK132,sK132))) != sK133 ),
    inference(demodulation,[status(thm)],[c_1627,c_61]) ).

cnf(c_15396,plain,
    ( pair_first(unordered_pair(unordered_pair(sK133,sK132),unordered_pair(sK132,sK132))) != sK132
    | pair_second(unordered_pair(unordered_pair(sK133,sK132),unordered_pair(sK132,sK132))) != sK133 ),
    inference(prop_impl_just,[status(thm)],[c_9103]) ).

cnf(c_39094,plain,
    pair_second(unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0))) = X1,
    inference(equality_resolution,[status(thm)],[c_163]) ).

cnf(c_39109,plain,
    pair_first(unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0))) = X0,
    inference(equality_resolution,[status(thm)],[c_128]) ).

cnf(c_39295,plain,
    pair_second(unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0))) = X1,
    inference(global_subsumption_just,[status(thm)],[c_163,c_39094]) ).

cnf(c_39299,plain,
    pair_second(unordered_pair(unordered_pair(X0,X1),unordered_pair(X1,X1))) = X0,
    inference(superposition,[status(thm)],[c_61,c_39295]) ).

cnf(c_39301,plain,
    pair_first(unordered_pair(unordered_pair(sK133,sK132),unordered_pair(sK132,sK132))) != sK132,
    inference(backward_subsumption_resolution,[status(thm)],[c_15396,c_39299]) ).

cnf(c_39325,plain,
    pair_first(unordered_pair(unordered_pair(X0,X1),unordered_pair(X0,X0))) = X0,
    inference(global_subsumption_just,[status(thm)],[c_128,c_39109]) ).

cnf(c_39329,plain,
    pair_first(unordered_pair(unordered_pair(X0,X1),unordered_pair(X1,X1))) = X1,
    inference(superposition,[status(thm)],[c_61,c_39325]) ).

cnf(c_40125,plain,
    $false,
    inference(superposition,[status(thm)],[c_39329,c_39301]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : SEU267+2 : TPTP v8.1.2. Released v3.3.0.
% 0.00/0.13  % Command  : run_iprover %s %d THM
% 0.14/0.35  % Computer : n017.cluster.edu
% 0.14/0.35  % Model    : x86_64 x86_64
% 0.14/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35  % Memory   : 8042.1875MB
% 0.14/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35  % CPULimit : 300
% 0.14/0.35  % WCLimit  : 300
% 0.14/0.35  % DateTime : Wed Aug 23 18:25:39 EDT 2023
% 0.14/0.35  % CPUTime  : 
% 0.20/0.47  Running first-order theorem proving
% 0.20/0.47  Running: /export/starexec/sandbox/solver/bin/run_problem --schedule fof_schedule --no_cores 8 /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 9.62/2.16  % SZS status Started for theBenchmark.p
% 9.62/2.16  % SZS status Theorem for theBenchmark.p
% 9.62/2.16  
% 9.62/2.16  %---------------- iProver v3.8 (pre SMT-COMP 2023/CASC 2023) ----------------%
% 9.62/2.16  
% 9.62/2.16  ------  iProver source info
% 9.62/2.16  
% 9.62/2.16  git: date: 2023-05-31 18:12:56 +0000
% 9.62/2.16  git: sha1: 8abddc1f627fd3ce0bcb8b4cbf113b3cc443d7b6
% 9.62/2.16  git: non_committed_changes: false
% 9.62/2.16  git: last_make_outside_of_git: false
% 9.62/2.16  
% 9.62/2.16  ------ Parsing...
% 9.62/2.16  ------ Clausification by vclausify_rel  & Parsing by iProver...
% 9.62/2.16  
% 9.62/2.16  ------ Preprocessing... sup_sim: 66  sf_s  rm: 6 0s  sf_e  pe_s  pe:1:0s pe:2:0s pe_e  sup_sim: 0  sf_s  rm: 4 0s  sf_e  pe_s  pe_e 
% 9.62/2.16  
% 9.62/2.16  ------ Preprocessing... gs_s  sp: 2 0s  gs_e  snvd_s sp: 0 0s snvd_e 
% 9.62/2.16  
% 9.62/2.16  ------ Preprocessing... sf_s  rm: 3 0s  sf_e  sf_s  rm: 0 0s  sf_e 
% 9.62/2.16  ------ Proving...
% 9.62/2.16  ------ Problem Properties 
% 9.62/2.16  
% 9.62/2.16  
% 9.62/2.16  clauses                                 618
% 9.62/2.16  conjectures                             0
% 9.62/2.16  EPR                                     99
% 9.62/2.16  Horn                                    483
% 9.62/2.16  unary                                   82
% 9.62/2.16  binary                                  168
% 9.62/2.16  lits                                    1838
% 9.62/2.16  lits eq                                 297
% 9.62/2.16  fd_pure                                 0
% 9.62/2.16  fd_pseudo                               0
% 9.62/2.16  fd_cond                                 21
% 9.62/2.16  fd_pseudo_cond                          103
% 9.62/2.16  AC symbols                              0
% 9.62/2.16  
% 9.62/2.16  ------ Input Options Time Limit: Unbounded
% 9.62/2.16  
% 9.62/2.16  
% 9.62/2.16  ------ 
% 9.62/2.16  Current options:
% 9.62/2.16  ------ 
% 9.62/2.16  
% 9.62/2.16  
% 9.62/2.16  
% 9.62/2.16  
% 9.62/2.16  ------ Proving...
% 9.62/2.16  
% 9.62/2.16  
% 9.62/2.16  % SZS status Theorem for theBenchmark.p
% 9.62/2.16  
% 9.62/2.16  % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 9.62/2.16  
% 9.62/2.16  
%------------------------------------------------------------------------------