TSTP Solution File: NUN087+2 by Metis---2.4

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%------------------------------------------------------------------------------
% File     : Metis---2.4
% Problem  : NUN087+2 : TPTP v8.1.0. Released v7.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : metis --show proof --show saturation %s

% 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  : 600s
% DateTime : Mon Jul 18 16:34:57 EDT 2022

% Result   : Theorem 0.75s 0.93s
% Output   : CNFRefutation 0.75s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   14
%            Number of leaves      :    8
% Syntax   : Number of formulae    :   55 (  18 unt;   0 def)
%            Number of atoms       :  130 (  40 equ)
%            Maximal formula atoms :    4 (   2 avg)
%            Number of connectives :  129 (  54   ~;  41   |;  34   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    5 (   2 usr;   1 prp; 0-3 aty)
%            Number of functors    :    4 (   4 usr;   1 con; 0-1 aty)
%            Number of variables   :   79 (   5 sgn  28   !;  24   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(axiom_1,axiom,
    ? [Y24] :
    ! [X19] :
      ( ( ~ r1(X19)
        & X19 != Y24 )
      | ( r1(X19)
        & X19 = Y24 ) ) ).

fof(axiom_5a,axiom,
    ! [X5] :
    ? [Y8] :
      ( ? [Y17] :
          ( r1(Y17)
          & r4(X5,Y17,Y8) )
      & ? [Y18] :
          ( r1(Y18)
          & Y8 = Y18 ) ) ).

fof(zerotimeszeroeqzero,conjecture,
    ? [Y1] :
      ( ? [Y2] :
          ( r1(Y2)
          & r4(Y2,Y2,Y1) )
      & ? [Y3] :
          ( r1(Y3)
          & Y1 = Y3 ) ) ).

fof(subgoal_0,plain,
    ? [Y1] :
      ( ? [Y2] :
          ( r1(Y2)
          & r4(Y2,Y2,Y1) )
      & ? [Y3] :
          ( r1(Y3)
          & Y1 = Y3 ) ),
    inference(strip,[],[zerotimeszeroeqzero]) ).

fof(negate_0_0,plain,
    ~ ? [Y1] :
        ( ? [Y2] :
            ( r1(Y2)
            & r4(Y2,Y2,Y1) )
        & ? [Y3] :
            ( r1(Y3)
            & Y1 = Y3 ) ),
    inference(negate,[],[subgoal_0]) ).

fof(normalize_0_0,plain,
    ! [X5] :
    ? [Y8] :
      ( ? [Y17] :
          ( r1(Y17)
          & r4(X5,Y17,Y8) )
      & ? [Y18] :
          ( Y8 = Y18
          & r1(Y18) ) ),
    inference(canonicalize,[],[axiom_5a]) ).

fof(normalize_0_1,plain,
    ! [X5] :
    ? [Y8] :
      ( ? [Y17] :
          ( r1(Y17)
          & r4(X5,Y17,Y8) )
      & ? [Y18] :
          ( Y8 = Y18
          & r1(Y18) ) ),
    inference(specialize,[],[normalize_0_0]) ).

fof(normalize_0_2,plain,
    ! [X5] :
      ( ? [Y17] :
          ( r1(Y17)
          & r4(X5,Y17,skolemFOFtoCNF_Y8(X5)) )
      & ? [Y18] :
          ( skolemFOFtoCNF_Y8(X5) = Y18
          & r1(Y18) ) ),
    inference(skolemize,[],[normalize_0_1]) ).

fof(normalize_0_3,plain,
    ! [X5] :
    ? [Y17] :
      ( r1(Y17)
      & r4(X5,Y17,skolemFOFtoCNF_Y8(X5)) ),
    inference(conjunct,[],[normalize_0_2]) ).

fof(normalize_0_4,plain,
    ! [X5] :
      ( r1(skolemFOFtoCNF_Y17(X5))
      & r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5)) ),
    inference(skolemize,[],[normalize_0_3]) ).

fof(normalize_0_5,plain,
    ! [X5] : r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5)),
    inference(conjunct,[],[normalize_0_4]) ).

fof(normalize_0_6,plain,
    ! [X5] :
    ? [Y18] :
      ( skolemFOFtoCNF_Y8(X5) = Y18
      & r1(Y18) ),
    inference(conjunct,[],[normalize_0_2]) ).

fof(normalize_0_7,plain,
    ! [X5] :
      ( skolemFOFtoCNF_Y8(X5) = skolemFOFtoCNF_Y18(X5)
      & r1(skolemFOFtoCNF_Y18(X5)) ),
    inference(skolemize,[],[normalize_0_6]) ).

fof(normalize_0_8,plain,
    ! [X5] : skolemFOFtoCNF_Y8(X5) = skolemFOFtoCNF_Y18(X5),
    inference(conjunct,[],[normalize_0_7]) ).

fof(normalize_0_9,plain,
    ! [X5] : r1(skolemFOFtoCNF_Y17(X5)),
    inference(conjunct,[],[normalize_0_4]) ).

fof(normalize_0_10,plain,
    ? [Y24] :
    ! [X19] :
      ( ( X19 != Y24
        & ~ r1(X19) )
      | ( X19 = Y24
        & r1(X19) ) ),
    inference(canonicalize,[],[axiom_1]) ).

fof(normalize_0_11,plain,
    ! [X19] :
      ( ( X19 != skolemFOFtoCNF_Y24
        & ~ r1(X19) )
      | ( X19 = skolemFOFtoCNF_Y24
        & r1(X19) ) ),
    inference(skolemize,[],[normalize_0_10]) ).

fof(normalize_0_12,plain,
    ! [X19] :
      ( ( X19 != skolemFOFtoCNF_Y24
        & ~ r1(X19) )
      | ( X19 = skolemFOFtoCNF_Y24
        & r1(X19) ) ),
    inference(specialize,[],[normalize_0_11]) ).

fof(normalize_0_13,plain,
    ! [X19] :
      ( ( X19 != skolemFOFtoCNF_Y24
        | r1(X19) )
      & ( ~ r1(X19)
        | X19 = skolemFOFtoCNF_Y24 ) ),
    inference(clausify,[],[normalize_0_12]) ).

fof(normalize_0_14,plain,
    ! [X19] :
      ( ~ r1(X19)
      | X19 = skolemFOFtoCNF_Y24 ),
    inference(conjunct,[],[normalize_0_13]) ).

fof(normalize_0_15,plain,
    ! [X5] : r1(skolemFOFtoCNF_Y18(X5)),
    inference(conjunct,[],[normalize_0_7]) ).

fof(normalize_0_16,plain,
    ! [Y1] :
      ( ! [Y2] :
          ( ~ r1(Y2)
          | ~ r4(Y2,Y2,Y1) )
      | ! [Y3] :
          ( Y1 != Y3
          | ~ r1(Y3) ) ),
    inference(canonicalize,[],[negate_0_0]) ).

fof(normalize_0_17,plain,
    ! [Y1] :
      ( ! [Y2] :
          ( ~ r1(Y2)
          | ~ r4(Y2,Y2,Y1) )
      | ! [Y3] :
          ( Y1 != Y3
          | ~ r1(Y3) ) ),
    inference(specialize,[],[normalize_0_16]) ).

fof(normalize_0_18,plain,
    ! [Y1,Y2,Y3] :
      ( Y1 != Y3
      | ~ r1(Y2)
      | ~ r1(Y3)
      | ~ r4(Y2,Y2,Y1) ),
    inference(clausify,[],[normalize_0_17]) ).

fof(normalize_0_19,plain,
    ! [X19] :
      ( X19 != skolemFOFtoCNF_Y24
      | r1(X19) ),
    inference(conjunct,[],[normalize_0_13]) ).

cnf(refute_0_0,plain,
    r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5)),
    inference(canonicalize,[],[normalize_0_5]) ).

cnf(refute_0_1,plain,
    skolemFOFtoCNF_Y8(X5) = skolemFOFtoCNF_Y18(X5),
    inference(canonicalize,[],[normalize_0_8]) ).

cnf(refute_0_2,plain,
    ( skolemFOFtoCNF_Y8(X5) != skolemFOFtoCNF_Y18(X5)
    | ~ r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5))
    | r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5)) ),
    introduced(tautology,[equality,[$cnf( r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5)) ),[2],$fot(skolemFOFtoCNF_Y18(X5))]]) ).

cnf(refute_0_3,plain,
    ( ~ r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5))
    | r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5)) ),
    inference(resolve,[$cnf( $equal(skolemFOFtoCNF_Y8(X5),skolemFOFtoCNF_Y18(X5)) )],[refute_0_1,refute_0_2]) ).

cnf(refute_0_4,plain,
    r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5)),
    inference(resolve,[$cnf( r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y8(X5)) )],[refute_0_0,refute_0_3]) ).

cnf(refute_0_5,plain,
    r1(skolemFOFtoCNF_Y17(X5)),
    inference(canonicalize,[],[normalize_0_9]) ).

cnf(refute_0_6,plain,
    ( ~ r1(X19)
    | X19 = skolemFOFtoCNF_Y24 ),
    inference(canonicalize,[],[normalize_0_14]) ).

cnf(refute_0_7,plain,
    ( ~ r1(skolemFOFtoCNF_Y17(X5))
    | skolemFOFtoCNF_Y17(X5) = skolemFOFtoCNF_Y24 ),
    inference(subst,[],[refute_0_6:[bind(X19,$fot(skolemFOFtoCNF_Y17(X5)))]]) ).

cnf(refute_0_8,plain,
    skolemFOFtoCNF_Y17(X5) = skolemFOFtoCNF_Y24,
    inference(resolve,[$cnf( r1(skolemFOFtoCNF_Y17(X5)) )],[refute_0_5,refute_0_7]) ).

cnf(refute_0_9,plain,
    ( skolemFOFtoCNF_Y17(X5) != skolemFOFtoCNF_Y24
    | ~ r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5))
    | r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y18(X5)) ),
    introduced(tautology,[equality,[$cnf( r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5)) ),[1],$fot(skolemFOFtoCNF_Y24)]]) ).

cnf(refute_0_10,plain,
    ( ~ r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5))
    | r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y18(X5)) ),
    inference(resolve,[$cnf( $equal(skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y24) )],[refute_0_8,refute_0_9]) ).

cnf(refute_0_11,plain,
    r1(skolemFOFtoCNF_Y18(X5)),
    inference(canonicalize,[],[normalize_0_15]) ).

cnf(refute_0_12,plain,
    ( ~ r1(skolemFOFtoCNF_Y18(X5))
    | skolemFOFtoCNF_Y18(X5) = skolemFOFtoCNF_Y24 ),
    inference(subst,[],[refute_0_6:[bind(X19,$fot(skolemFOFtoCNF_Y18(X5)))]]) ).

cnf(refute_0_13,plain,
    skolemFOFtoCNF_Y18(X5) = skolemFOFtoCNF_Y24,
    inference(resolve,[$cnf( r1(skolemFOFtoCNF_Y18(X5)) )],[refute_0_11,refute_0_12]) ).

cnf(refute_0_14,plain,
    ( skolemFOFtoCNF_Y18(X5) != skolemFOFtoCNF_Y24
    | ~ r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y18(X5))
    | r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24) ),
    introduced(tautology,[equality,[$cnf( r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y18(X5)) ),[2],$fot(skolemFOFtoCNF_Y24)]]) ).

cnf(refute_0_15,plain,
    ( ~ r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y18(X5))
    | r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24) ),
    inference(resolve,[$cnf( $equal(skolemFOFtoCNF_Y18(X5),skolemFOFtoCNF_Y24) )],[refute_0_13,refute_0_14]) ).

cnf(refute_0_16,plain,
    ( ~ r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5))
    | r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24) ),
    inference(resolve,[$cnf( r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y18(X5)) )],[refute_0_10,refute_0_15]) ).

cnf(refute_0_17,plain,
    r4(X5,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24),
    inference(resolve,[$cnf( r4(X5,skolemFOFtoCNF_Y17(X5),skolemFOFtoCNF_Y18(X5)) )],[refute_0_4,refute_0_16]) ).

cnf(refute_0_18,plain,
    r4(skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24),
    inference(subst,[],[refute_0_17:[bind(X5,$fot(skolemFOFtoCNF_Y24))]]) ).

cnf(refute_0_19,plain,
    ( Y1 != Y3
    | ~ r1(Y2)
    | ~ r1(Y3)
    | ~ r4(Y2,Y2,Y1) ),
    inference(canonicalize,[],[normalize_0_18]) ).

cnf(refute_0_20,plain,
    ( Y3 != Y3
    | ~ r1(Y2)
    | ~ r1(Y3)
    | ~ r4(Y2,Y2,Y3) ),
    inference(subst,[],[refute_0_19:[bind(Y1,$fot(Y3))]]) ).

cnf(refute_0_21,plain,
    Y3 = Y3,
    introduced(tautology,[refl,[$fot(Y3)]]) ).

cnf(refute_0_22,plain,
    ( ~ r1(Y2)
    | ~ r1(Y3)
    | ~ r4(Y2,Y2,Y3) ),
    inference(resolve,[$cnf( $equal(Y3,Y3) )],[refute_0_21,refute_0_20]) ).

cnf(refute_0_23,plain,
    ( ~ r1(skolemFOFtoCNF_Y24)
    | ~ r4(skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24) ),
    inference(subst,[],[refute_0_22:[bind(Y2,$fot(skolemFOFtoCNF_Y24)),bind(Y3,$fot(skolemFOFtoCNF_Y24))]]) ).

cnf(refute_0_24,plain,
    ~ r1(skolemFOFtoCNF_Y24),
    inference(resolve,[$cnf( r4(skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24) )],[refute_0_18,refute_0_23]) ).

cnf(refute_0_25,plain,
    ( X19 != skolemFOFtoCNF_Y24
    | r1(X19) ),
    inference(canonicalize,[],[normalize_0_19]) ).

cnf(refute_0_26,plain,
    ( skolemFOFtoCNF_Y24 != skolemFOFtoCNF_Y24
    | r1(skolemFOFtoCNF_Y24) ),
    inference(subst,[],[refute_0_25:[bind(X19,$fot(skolemFOFtoCNF_Y24))]]) ).

cnf(refute_0_27,plain,
    skolemFOFtoCNF_Y24 = skolemFOFtoCNF_Y24,
    introduced(tautology,[refl,[$fot(skolemFOFtoCNF_Y24)]]) ).

cnf(refute_0_28,plain,
    r1(skolemFOFtoCNF_Y24),
    inference(resolve,[$cnf( $equal(skolemFOFtoCNF_Y24,skolemFOFtoCNF_Y24) )],[refute_0_27,refute_0_26]) ).

cnf(refute_0_29,plain,
    $false,
    inference(resolve,[$cnf( r1(skolemFOFtoCNF_Y24) )],[refute_0_28,refute_0_24]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : NUN087+2 : TPTP v8.1.0. Released v7.3.0.
% 0.03/0.12  % Command  : metis --show proof --show saturation %s
% 0.12/0.33  % Computer : n029.cluster.edu
% 0.12/0.33  % Model    : x86_64 x86_64
% 0.12/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33  % Memory   : 8042.1875MB
% 0.12/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33  % CPULimit : 300
% 0.12/0.33  % WCLimit  : 600
% 0.12/0.33  % DateTime : Thu Jun  2 06:30:01 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.12/0.34  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 0.75/0.93  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.75/0.93  
% 0.75/0.93  % SZS output start CNFRefutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 0.75/0.93  
%------------------------------------------------------------------------------