TSTP Solution File: SWC254+1 by Drodi---3.5.1

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%------------------------------------------------------------------------------
% File     : Drodi---3.5.1
% Problem  : SWC254+1 : TPTP v8.1.2. Released v2.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %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  : 300s
% DateTime : Wed May 31 12:39:48 EDT 2023

% Result   : Theorem 0.09s 0.32s
% Output   : CNFRefutation 0.09s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   12
%            Number of leaves      :    9
% Syntax   : Number of formulae    :   54 (   4 unt;   0 def)
%            Number of atoms       :  195 (  33 equ)
%            Maximal formula atoms :   14 (   3 avg)
%            Number of connectives :  214 (  73   ~;  70   |;  49   &)
%                                         (   8 <=>;  14  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   21 (   5 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of predicates  :   13 (  11 usr;   7 prp; 0-4 aty)
%            Number of functors    :   10 (  10 usr;   5 con; 0-4 aty)
%            Number of variables   :   65 (;  48   !;  17   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f4,axiom,
    ! [U] :
      ( ssList(U)
     => ( singletonP(U)
      <=> ? [V] :
            ( ssItem(V)
            & cons(V,nil) = U ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f96,conjecture,
    ! [U] :
      ( ssList(U)
     => ! [V] :
          ( ssList(V)
         => ! [W] :
              ( ssList(W)
             => ! [X] :
                  ( ssList(X)
                 => ( V != X
                    | U != W
                    | ( ( ~ neq(V,nil)
                        | ! [Y] :
                            ( ssItem(Y)
                           => ! [Z] :
                                ( ssList(Z)
                               => ( cons(Y,nil) != W
                                  | app(Z,cons(Y,nil)) != X ) ) )
                        | singletonP(U) )
                      & ( ~ neq(V,nil)
                        | neq(X,nil) ) ) ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f97,negated_conjecture,
    ~ ! [U] :
        ( ssList(U)
       => ! [V] :
            ( ssList(V)
           => ! [W] :
                ( ssList(W)
               => ! [X] :
                    ( ssList(X)
                   => ( V != X
                      | U != W
                      | ( ( ~ neq(V,nil)
                          | ! [Y] :
                              ( ssItem(Y)
                             => ! [Z] :
                                  ( ssList(Z)
                                 => ( cons(Y,nil) != W
                                    | app(Z,cons(Y,nil)) != X ) ) )
                          | singletonP(U) )
                        & ( ~ neq(V,nil)
                          | neq(X,nil) ) ) ) ) ) ) ),
    inference(negated_conjecture,[status(cth)],[f96]) ).

fof(f113,plain,
    ! [U] :
      ( ~ ssList(U)
      | ( singletonP(U)
      <=> ? [V] :
            ( ssItem(V)
            & cons(V,nil) = U ) ) ),
    inference(pre_NNF_transformation,[status(esa)],[f4]) ).

fof(f114,plain,
    ! [U] :
      ( ~ ssList(U)
      | ( ( ~ singletonP(U)
          | ? [V] :
              ( ssItem(V)
              & cons(V,nil) = U ) )
        & ( singletonP(U)
          | ! [V] :
              ( ~ ssItem(V)
              | cons(V,nil) != U ) ) ) ),
    inference(NNF_transformation,[status(esa)],[f113]) ).

fof(f115,plain,
    ! [U] :
      ( ~ ssList(U)
      | ( ( ~ singletonP(U)
          | ( ssItem(sk0_4(U))
            & cons(sk0_4(U),nil) = U ) )
        & ( singletonP(U)
          | ! [V] :
              ( ~ ssItem(V)
              | cons(V,nil) != U ) ) ) ),
    inference(skolemization,[status(esa)],[f114]) ).

fof(f118,plain,
    ! [X0,X1] :
      ( ~ ssList(X0)
      | singletonP(X0)
      | ~ ssItem(X1)
      | cons(X1,nil) != X0 ),
    inference(cnf_transformation,[status(esa)],[f115]) ).

fof(f415,plain,
    ? [U] :
      ( ssList(U)
      & ? [V] :
          ( ssList(V)
          & ? [W] :
              ( ssList(W)
              & ? [X] :
                  ( ssList(X)
                  & V = X
                  & U = W
                  & ( ( neq(V,nil)
                      & ? [Y] :
                          ( ssItem(Y)
                          & ? [Z] :
                              ( ssList(Z)
                              & cons(Y,nil) = W
                              & app(Z,cons(Y,nil)) = X ) )
                      & ~ singletonP(U) )
                    | ( neq(V,nil)
                      & ~ neq(X,nil) ) ) ) ) ) ),
    inference(pre_NNF_transformation,[status(esa)],[f97]) ).

fof(f416,plain,
    ! [U,V,W,X] :
      ( pd0_0(X,W,V,U)
     => ( neq(V,nil)
        & ? [Y] :
            ( ssItem(Y)
            & ? [Z] :
                ( ssList(Z)
                & cons(Y,nil) = W
                & app(Z,cons(Y,nil)) = X ) )
        & ~ singletonP(U) ) ),
    introduced(predicate_definition,[f415]) ).

fof(f417,plain,
    ? [U] :
      ( ssList(U)
      & ? [V] :
          ( ssList(V)
          & ? [W] :
              ( ssList(W)
              & ? [X] :
                  ( ssList(X)
                  & V = X
                  & U = W
                  & ( pd0_0(X,W,V,U)
                    | ( neq(V,nil)
                      & ~ neq(X,nil) ) ) ) ) ) ),
    inference(formula_renaming,[status(thm)],[f415,f416]) ).

fof(f418,plain,
    ( ssList(sk0_47)
    & ssList(sk0_48)
    & ssList(sk0_49)
    & ssList(sk0_50)
    & sk0_48 = sk0_50
    & sk0_47 = sk0_49
    & ( pd0_0(sk0_50,sk0_49,sk0_48,sk0_47)
      | ( neq(sk0_48,nil)
        & ~ neq(sk0_50,nil) ) ) ),
    inference(skolemization,[status(esa)],[f417]) ).

fof(f419,plain,
    ssList(sk0_47),
    inference(cnf_transformation,[status(esa)],[f418]) ).

fof(f423,plain,
    sk0_48 = sk0_50,
    inference(cnf_transformation,[status(esa)],[f418]) ).

fof(f424,plain,
    sk0_47 = sk0_49,
    inference(cnf_transformation,[status(esa)],[f418]) ).

fof(f425,plain,
    ( pd0_0(sk0_50,sk0_49,sk0_48,sk0_47)
    | neq(sk0_48,nil) ),
    inference(cnf_transformation,[status(esa)],[f418]) ).

fof(f426,plain,
    ( pd0_0(sk0_50,sk0_49,sk0_48,sk0_47)
    | ~ neq(sk0_50,nil) ),
    inference(cnf_transformation,[status(esa)],[f418]) ).

fof(f427,plain,
    ! [U,V,W,X] :
      ( ~ pd0_0(X,W,V,U)
      | ( neq(V,nil)
        & ? [Y] :
            ( ssItem(Y)
            & ? [Z] :
                ( ssList(Z)
                & cons(Y,nil) = W
                & app(Z,cons(Y,nil)) = X ) )
        & ~ singletonP(U) ) ),
    inference(pre_NNF_transformation,[status(esa)],[f416]) ).

fof(f428,plain,
    ! [U,V,W,X] :
      ( ~ pd0_0(X,W,V,U)
      | ( neq(V,nil)
        & ssItem(sk0_51(X,W,V,U))
        & ssList(sk0_52(X,W,V,U))
        & cons(sk0_51(X,W,V,U),nil) = W
        & app(sk0_52(X,W,V,U),cons(sk0_51(X,W,V,U),nil)) = X
        & ~ singletonP(U) ) ),
    inference(skolemization,[status(esa)],[f427]) ).

fof(f430,plain,
    ! [X0,X1,X2,X3] :
      ( ~ pd0_0(X0,X1,X2,X3)
      | ssItem(sk0_51(X0,X1,X2,X3)) ),
    inference(cnf_transformation,[status(esa)],[f428]) ).

fof(f432,plain,
    ! [X0,X1,X2,X3] :
      ( ~ pd0_0(X0,X1,X2,X3)
      | cons(sk0_51(X0,X1,X2,X3),nil) = X1 ),
    inference(cnf_transformation,[status(esa)],[f428]) ).

fof(f434,plain,
    ! [X0,X1,X2,X3] :
      ( ~ pd0_0(X0,X1,X2,X3)
      | ~ singletonP(X3) ),
    inference(cnf_transformation,[status(esa)],[f428]) ).

fof(f435,plain,
    ( spl0_0
  <=> pd0_0(sk0_50,sk0_49,sk0_48,sk0_47) ),
    introduced(split_symbol_definition) ).

fof(f436,plain,
    ( pd0_0(sk0_50,sk0_49,sk0_48,sk0_47)
    | ~ spl0_0 ),
    inference(component_clause,[status(thm)],[f435]) ).

fof(f438,plain,
    ( spl0_1
  <=> neq(sk0_48,nil) ),
    introduced(split_symbol_definition) ).

fof(f439,plain,
    ( neq(sk0_48,nil)
    | ~ spl0_1 ),
    inference(component_clause,[status(thm)],[f438]) ).

fof(f441,plain,
    ( spl0_0
    | spl0_1 ),
    inference(split_clause,[status(thm)],[f425,f435,f438]) ).

fof(f442,plain,
    ( spl0_2
  <=> neq(sk0_50,nil) ),
    introduced(split_symbol_definition) ).

fof(f444,plain,
    ( ~ neq(sk0_50,nil)
    | spl0_2 ),
    inference(component_clause,[status(thm)],[f442]) ).

fof(f445,plain,
    ( spl0_0
    | ~ spl0_2 ),
    inference(split_clause,[status(thm)],[f426,f435,f442]) ).

fof(f449,plain,
    ! [X0] :
      ( ~ ssList(cons(X0,nil))
      | singletonP(cons(X0,nil))
      | ~ ssItem(X0) ),
    inference(destructive_equality_resolution,[status(esa)],[f118]) ).

fof(f488,plain,
    ( ~ neq(sk0_48,nil)
    | spl0_2 ),
    inference(forward_demodulation,[status(thm)],[f423,f444]) ).

fof(f489,plain,
    ( pd0_0(sk0_48,sk0_49,sk0_48,sk0_47)
    | ~ spl0_0 ),
    inference(forward_demodulation,[status(thm)],[f423,f436]) ).

fof(f490,plain,
    ( pd0_0(sk0_48,sk0_47,sk0_48,sk0_47)
    | ~ spl0_0 ),
    inference(forward_demodulation,[status(thm)],[f424,f489]) ).

fof(f495,plain,
    ( $false
    | spl0_2
    | ~ spl0_1 ),
    inference(forward_subsumption_resolution,[status(thm)],[f439,f488]) ).

fof(f496,plain,
    ( spl0_2
    | ~ spl0_1 ),
    inference(contradiction_clause,[status(thm)],[f495]) ).

fof(f498,plain,
    ( ssItem(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47))
    | ~ spl0_0 ),
    inference(resolution,[status(thm)],[f430,f490]) ).

fof(f501,plain,
    ( spl0_3
  <=> ssItem(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47)) ),
    introduced(split_symbol_definition) ).

fof(f503,plain,
    ( ~ ssItem(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47))
    | spl0_3 ),
    inference(component_clause,[status(thm)],[f501]) ).

fof(f514,plain,
    ( $false
    | ~ spl0_0
    | spl0_3 ),
    inference(forward_subsumption_resolution,[status(thm)],[f503,f498]) ).

fof(f515,plain,
    ( ~ spl0_0
    | spl0_3 ),
    inference(contradiction_clause,[status(thm)],[f514]) ).

fof(f519,plain,
    ( cons(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47),nil) = sk0_47
    | ~ spl0_0 ),
    inference(resolution,[status(thm)],[f432,f490]) ).

fof(f520,plain,
    ( spl0_6
  <=> ssList(cons(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47),nil)) ),
    introduced(split_symbol_definition) ).

fof(f522,plain,
    ( ~ ssList(cons(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47),nil))
    | spl0_6 ),
    inference(component_clause,[status(thm)],[f520]) ).

fof(f523,plain,
    ( spl0_7
  <=> singletonP(sk0_47) ),
    introduced(split_symbol_definition) ).

fof(f524,plain,
    ( singletonP(sk0_47)
    | ~ spl0_7 ),
    inference(component_clause,[status(thm)],[f523]) ).

fof(f526,plain,
    ( ~ ssList(cons(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47),nil))
    | singletonP(sk0_47)
    | ~ ssItem(sk0_51(sk0_48,sk0_47,sk0_48,sk0_47))
    | ~ spl0_0 ),
    inference(paramodulation,[status(thm)],[f519,f449]) ).

fof(f527,plain,
    ( ~ spl0_6
    | spl0_7
    | ~ spl0_3
    | ~ spl0_0 ),
    inference(split_clause,[status(thm)],[f526,f520,f523,f501,f435]) ).

fof(f528,plain,
    ( ~ ssList(sk0_47)
    | ~ spl0_0
    | spl0_6 ),
    inference(forward_demodulation,[status(thm)],[f519,f522]) ).

fof(f529,plain,
    ( $false
    | ~ spl0_0
    | spl0_6 ),
    inference(forward_subsumption_resolution,[status(thm)],[f528,f419]) ).

fof(f530,plain,
    ( ~ spl0_0
    | spl0_6 ),
    inference(contradiction_clause,[status(thm)],[f529]) ).

fof(f532,plain,
    ! [X0,X1,X2] :
      ( ~ pd0_0(X0,X1,X2,sk0_47)
      | ~ spl0_7 ),
    inference(resolution,[status(thm)],[f524,f434]) ).

fof(f533,plain,
    ( $false
    | ~ spl0_7
    | ~ spl0_0 ),
    inference(backward_subsumption_resolution,[status(thm)],[f490,f532]) ).

fof(f534,plain,
    ( ~ spl0_7
    | ~ spl0_0 ),
    inference(contradiction_clause,[status(thm)],[f533]) ).

fof(f535,plain,
    $false,
    inference(sat_refutation,[status(thm)],[f441,f445,f496,f515,f527,f530,f534]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.10  % Problem  : SWC254+1 : TPTP v8.1.2. Released v2.4.0.
% 0.00/0.10  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.09/0.30  % Computer : n029.cluster.edu
% 0.09/0.30  % Model    : x86_64 x86_64
% 0.09/0.30  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.30  % Memory   : 8042.1875MB
% 0.09/0.30  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.09/0.30  % CPULimit : 300
% 0.09/0.30  % WCLimit  : 300
% 0.09/0.30  % DateTime : Tue May 30 11:36:51 EDT 2023
% 0.09/0.30  % CPUTime  : 
% 0.09/0.31  % Drodi V3.5.1
% 0.09/0.32  % Refutation found
% 0.09/0.32  % SZS status Theorem for theBenchmark: Theorem is valid
% 0.09/0.32  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.15/0.55  % Elapsed time: 0.027027 seconds
% 0.15/0.55  % CPU time: 0.023220 seconds
% 0.15/0.55  % Memory used: 8.140 MB
%------------------------------------------------------------------------------