TSTP Solution File: SET884+1 by Drodi---3.5.1

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Drodi---3.5.1
% Problem  : SET884+1 : TPTP v8.1.2. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s

% Computer : n021.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 12:35:27 EDT 2023

% Result   : Theorem 0.19s 0.35s
% Output   : CNFRefutation 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   11
%            Number of leaves      :    7
% Syntax   : Number of formulae    :   42 (   9 unt;   0 def)
%            Number of atoms       :  163 (  82 equ)
%            Maximal formula atoms :   14 (   3 avg)
%            Number of connectives :  198 (  77   ~;  72   |;  40   &)
%                                         (   8 <=>;   1  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   11 (   5 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    6 (   4 usr;   3 prp; 0-2 aty)
%            Number of functors    :    8 (   8 usr;   3 con; 0-3 aty)
%            Number of variables   :  100 (;  88   !;  12   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f2,axiom,
    ! [A,B] : unordered_pair(A,B) = unordered_pair(B,A),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f3,axiom,
    ! [A,B] :
      ( B = singleton(A)
    <=> ! [C] :
          ( in(C,B)
        <=> C = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f4,axiom,
    ! [A,B,C] :
      ( C = unordered_pair(A,B)
    <=> ! [D] :
          ( in(D,C)
        <=> ( D = A
            | D = B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f5,axiom,
    ! [A,B] :
      ( subset(A,B)
    <=> ! [C] :
          ( in(C,A)
         => in(C,B) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f9,conjecture,
    ! [A,B,C] :
      ~ ( subset(singleton(A),unordered_pair(B,C))
        & A != B
        & A != C ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f10,negated_conjecture,
    ~ ! [A,B,C] :
        ~ ( subset(singleton(A),unordered_pair(B,C))
          & A != B
          & A != C ),
    inference(negated_conjecture,[status(cth)],[f9]) ).

fof(f13,plain,
    ! [X0,X1] : unordered_pair(X0,X1) = unordered_pair(X1,X0),
    inference(cnf_transformation,[status(esa)],[f2]) ).

fof(f14,plain,
    ! [A,B] :
      ( ( B != singleton(A)
        | ! [C] :
            ( ( ~ in(C,B)
              | C = A )
            & ( in(C,B)
              | C != A ) ) )
      & ( B = singleton(A)
        | ? [C] :
            ( ( ~ in(C,B)
              | C != A )
            & ( in(C,B)
              | C = A ) ) ) ),
    inference(NNF_transformation,[status(esa)],[f3]) ).

fof(f15,plain,
    ( ! [A,B] :
        ( B != singleton(A)
        | ( ! [C] :
              ( ~ in(C,B)
              | C = A )
          & ! [C] :
              ( in(C,B)
              | C != A ) ) )
    & ! [A,B] :
        ( B = singleton(A)
        | ? [C] :
            ( ( ~ in(C,B)
              | C != A )
            & ( in(C,B)
              | C = A ) ) ) ),
    inference(miniscoping,[status(esa)],[f14]) ).

fof(f16,plain,
    ( ! [A,B] :
        ( B != singleton(A)
        | ( ! [C] :
              ( ~ in(C,B)
              | C = A )
          & ! [C] :
              ( in(C,B)
              | C != A ) ) )
    & ! [A,B] :
        ( B = singleton(A)
        | ( ( ~ in(sk0_0(B,A),B)
            | sk0_0(B,A) != A )
          & ( in(sk0_0(B,A),B)
            | sk0_0(B,A) = A ) ) ) ),
    inference(skolemization,[status(esa)],[f15]) ).

fof(f18,plain,
    ! [X0,X1,X2] :
      ( X0 != singleton(X1)
      | in(X2,X0)
      | X2 != X1 ),
    inference(cnf_transformation,[status(esa)],[f16]) ).

fof(f21,plain,
    ! [A,B,C] :
      ( ( C != unordered_pair(A,B)
        | ! [D] :
            ( ( ~ in(D,C)
              | D = A
              | D = B )
            & ( in(D,C)
              | ( D != A
                & D != B ) ) ) )
      & ( C = unordered_pair(A,B)
        | ? [D] :
            ( ( ~ in(D,C)
              | ( D != A
                & D != B ) )
            & ( in(D,C)
              | D = A
              | D = B ) ) ) ),
    inference(NNF_transformation,[status(esa)],[f4]) ).

fof(f22,plain,
    ( ! [A,B,C] :
        ( C != unordered_pair(A,B)
        | ( ! [D] :
              ( ~ in(D,C)
              | D = A
              | D = B )
          & ! [D] :
              ( in(D,C)
              | ( D != A
                & D != B ) ) ) )
    & ! [A,B,C] :
        ( C = unordered_pair(A,B)
        | ? [D] :
            ( ( ~ in(D,C)
              | ( D != A
                & D != B ) )
            & ( in(D,C)
              | D = A
              | D = B ) ) ) ),
    inference(miniscoping,[status(esa)],[f21]) ).

fof(f23,plain,
    ( ! [A,B,C] :
        ( C != unordered_pair(A,B)
        | ( ! [D] :
              ( ~ in(D,C)
              | D = A
              | D = B )
          & ! [D] :
              ( in(D,C)
              | ( D != A
                & D != B ) ) ) )
    & ! [A,B,C] :
        ( C = unordered_pair(A,B)
        | ( ( ~ in(sk0_1(C,B,A),C)
            | ( sk0_1(C,B,A) != A
              & sk0_1(C,B,A) != B ) )
          & ( in(sk0_1(C,B,A),C)
            | sk0_1(C,B,A) = A
            | sk0_1(C,B,A) = B ) ) ) ),
    inference(skolemization,[status(esa)],[f22]) ).

fof(f24,plain,
    ! [X0,X1,X2,X3] :
      ( X0 != unordered_pair(X1,X2)
      | ~ in(X3,X0)
      | X3 = X1
      | X3 = X2 ),
    inference(cnf_transformation,[status(esa)],[f23]) ).

fof(f30,plain,
    ! [A,B] :
      ( subset(A,B)
    <=> ! [C] :
          ( ~ in(C,A)
          | in(C,B) ) ),
    inference(pre_NNF_transformation,[status(esa)],[f5]) ).

fof(f31,plain,
    ! [A,B] :
      ( ( ~ subset(A,B)
        | ! [C] :
            ( ~ in(C,A)
            | in(C,B) ) )
      & ( subset(A,B)
        | ? [C] :
            ( in(C,A)
            & ~ in(C,B) ) ) ),
    inference(NNF_transformation,[status(esa)],[f30]) ).

fof(f32,plain,
    ( ! [A,B] :
        ( ~ subset(A,B)
        | ! [C] :
            ( ~ in(C,A)
            | in(C,B) ) )
    & ! [A,B] :
        ( subset(A,B)
        | ? [C] :
            ( in(C,A)
            & ~ in(C,B) ) ) ),
    inference(miniscoping,[status(esa)],[f31]) ).

fof(f33,plain,
    ( ! [A,B] :
        ( ~ subset(A,B)
        | ! [C] :
            ( ~ in(C,A)
            | in(C,B) ) )
    & ! [A,B] :
        ( subset(A,B)
        | ( in(sk0_2(B,A),A)
          & ~ in(sk0_2(B,A),B) ) ) ),
    inference(skolemization,[status(esa)],[f32]) ).

fof(f34,plain,
    ! [X0,X1,X2] :
      ( ~ subset(X0,X1)
      | ~ in(X2,X0)
      | in(X2,X1) ),
    inference(cnf_transformation,[status(esa)],[f33]) ).

fof(f43,plain,
    ? [A,B,C] :
      ( subset(singleton(A),unordered_pair(B,C))
      & A != B
      & A != C ),
    inference(pre_NNF_transformation,[status(esa)],[f10]) ).

fof(f44,plain,
    ? [A,C] :
      ( ? [B] :
          ( subset(singleton(A),unordered_pair(B,C))
          & A != B )
      & A != C ),
    inference(miniscoping,[status(esa)],[f43]) ).

fof(f45,plain,
    ( subset(singleton(sk0_5),unordered_pair(sk0_7,sk0_6))
    & sk0_5 != sk0_7
    & sk0_5 != sk0_6 ),
    inference(skolemization,[status(esa)],[f44]) ).

fof(f46,plain,
    subset(singleton(sk0_5),unordered_pair(sk0_7,sk0_6)),
    inference(cnf_transformation,[status(esa)],[f45]) ).

fof(f47,plain,
    sk0_5 != sk0_7,
    inference(cnf_transformation,[status(esa)],[f45]) ).

fof(f48,plain,
    sk0_5 != sk0_6,
    inference(cnf_transformation,[status(esa)],[f45]) ).

fof(f50,plain,
    ! [X0] : in(X0,singleton(X0)),
    inference(destructive_equality_resolution,[status(esa)],[f18]) ).

fof(f51,plain,
    ! [X0,X1,X2] :
      ( ~ in(X0,unordered_pair(X1,X2))
      | X0 = X1
      | X0 = X2 ),
    inference(destructive_equality_resolution,[status(esa)],[f24]) ).

fof(f62,plain,
    ! [X0] :
      ( ~ in(X0,singleton(sk0_5))
      | in(X0,unordered_pair(sk0_7,sk0_6)) ),
    inference(resolution,[status(thm)],[f34,f46]) ).

fof(f63,plain,
    ! [X0] :
      ( ~ in(X0,singleton(sk0_5))
      | in(X0,unordered_pair(sk0_6,sk0_7)) ),
    inference(forward_demodulation,[status(thm)],[f13,f62]) ).

fof(f65,plain,
    ! [X0] :
      ( ~ in(X0,singleton(sk0_5))
      | X0 = sk0_6
      | X0 = sk0_7 ),
    inference(resolution,[status(thm)],[f63,f51]) ).

fof(f66,plain,
    ( spl0_0
  <=> sk0_5 = sk0_6 ),
    introduced(split_symbol_definition) ).

fof(f67,plain,
    ( sk0_5 = sk0_6
    | ~ spl0_0 ),
    inference(component_clause,[status(thm)],[f66]) ).

fof(f69,plain,
    ( spl0_1
  <=> sk0_5 = sk0_7 ),
    introduced(split_symbol_definition) ).

fof(f70,plain,
    ( sk0_5 = sk0_7
    | ~ spl0_1 ),
    inference(component_clause,[status(thm)],[f69]) ).

fof(f72,plain,
    ( sk0_5 = sk0_6
    | sk0_5 = sk0_7 ),
    inference(resolution,[status(thm)],[f65,f50]) ).

fof(f73,plain,
    ( spl0_0
    | spl0_1 ),
    inference(split_clause,[status(thm)],[f72,f66,f69]) ).

fof(f74,plain,
    ( $false
    | ~ spl0_0 ),
    inference(forward_subsumption_resolution,[status(thm)],[f67,f48]) ).

fof(f75,plain,
    ~ spl0_0,
    inference(contradiction_clause,[status(thm)],[f74]) ).

fof(f76,plain,
    ( $false
    | ~ spl0_1 ),
    inference(forward_subsumption_resolution,[status(thm)],[f70,f47]) ).

fof(f77,plain,
    ~ spl0_1,
    inference(contradiction_clause,[status(thm)],[f76]) ).

fof(f78,plain,
    $false,
    inference(sat_refutation,[status(thm)],[f73,f75,f77]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.12  % Problem  : SET884+1 : TPTP v8.1.2. Released v3.2.0.
% 0.13/0.13  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.13/0.34  % Computer : n021.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 300
% 0.13/0.34  % DateTime : Tue May 30 10:20:37 EDT 2023
% 0.13/0.34  % CPUTime  : 
% 0.13/0.35  % Drodi V3.5.1
% 0.19/0.35  % Refutation found
% 0.19/0.35  % SZS status Theorem for theBenchmark: Theorem is valid
% 0.19/0.35  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.19/0.37  % Elapsed time: 0.023722 seconds
% 0.19/0.37  % CPU time: 0.031469 seconds
% 0.19/0.37  % Memory used: 14.323 MB
%------------------------------------------------------------------------------