TSTP Solution File: SET615+3 by SnakeForV---1.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : SnakeForV---1.0
% Problem  : SET615+3 : TPTP v8.1.0. Released v2.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule snake_tptp_uns --cores 0 -t %d %s

% Computer : n020.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 Aug 31 18:21:37 EDT 2022

% Result   : Theorem 0.21s 0.54s
% Output   : Refutation 0.21s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   10
%            Number of leaves      :   15
% Syntax   : Number of formulae    :   97 (   8 unt;   0 def)
%            Number of atoms       :  270 (  19 equ)
%            Maximal formula atoms :   10 (   2 avg)
%            Number of connectives :  291 ( 118   ~; 129   |;  25   &)
%                                         (  17 <=>;   2  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   4 avg)
%            Maximal term depth    :    4 (   2 avg)
%            Number of predicates  :   12 (  10 usr;   9 prp; 0-2 aty)
%            Number of functors    :    6 (   6 usr;   3 con; 0-2 aty)
%            Number of variables   :   93 (  81   !;  12   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f266,plain,
    $false,
    inference(avatar_sat_refutation,[],[f78,f88,f126,f142,f150,f151,f167,f186,f195,f196,f222,f236,f238,f261,f262,f265]) ).

fof(f265,plain,
    ( ~ spl6_5
    | spl6_7
    | spl6_9 ),
    inference(avatar_contradiction_clause,[],[f264]) ).

fof(f264,plain,
    ( $false
    | ~ spl6_5
    | spl6_7
    | spl6_9 ),
    inference(subsumption_resolution,[],[f263,f121]) ).

fof(f121,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | ~ spl6_5 ),
    inference(avatar_component_clause,[],[f119]) ).

fof(f119,plain,
    ( spl6_5
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_5])]) ).

fof(f263,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | spl6_7
    | spl6_9 ),
    inference(subsumption_resolution,[],[f246,f136]) ).

fof(f136,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | spl6_7 ),
    inference(avatar_component_clause,[],[f135]) ).

fof(f135,plain,
    ( spl6_7
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_7])]) ).

fof(f246,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | spl6_9 ),
    inference(resolution,[],[f161,f48]) ).

fof(f48,plain,
    ! [X2,X0,X1] :
      ( ~ member(X1,X2)
      | member(X1,difference(X2,X0))
      | member(X1,X0) ),
    inference(cnf_transformation,[],[f29]) ).

fof(f29,plain,
    ! [X0,X1,X2] :
      ( ( member(X1,difference(X2,X0))
        | ~ member(X1,X2)
        | member(X1,X0) )
      & ( ( member(X1,X2)
          & ~ member(X1,X0) )
        | ~ member(X1,difference(X2,X0)) ) ),
    inference(rectify,[],[f28]) ).

fof(f28,plain,
    ! [X2,X1,X0] :
      ( ( member(X1,difference(X0,X2))
        | ~ member(X1,X0)
        | member(X1,X2) )
      & ( ( member(X1,X0)
          & ~ member(X1,X2) )
        | ~ member(X1,difference(X0,X2)) ) ),
    inference(flattening,[],[f27]) ).

fof(f27,plain,
    ! [X2,X1,X0] :
      ( ( member(X1,difference(X0,X2))
        | ~ member(X1,X0)
        | member(X1,X2) )
      & ( ( member(X1,X0)
          & ~ member(X1,X2) )
        | ~ member(X1,difference(X0,X2)) ) ),
    inference(nnf_transformation,[],[f12]) ).

fof(f12,plain,
    ! [X2,X1,X0] :
      ( member(X1,difference(X0,X2))
    <=> ( member(X1,X0)
        & ~ member(X1,X2) ) ),
    inference(rectify,[],[f2]) ).

fof(f2,axiom,
    ! [X0,X2,X1] :
      ( ( member(X2,X0)
        & ~ member(X2,X1) )
    <=> member(X2,difference(X0,X1)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',difference_defn) ).

fof(f161,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK1,sK2))
    | spl6_9 ),
    inference(avatar_component_clause,[],[f160]) ).

fof(f160,plain,
    ( spl6_9
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK1,sK2)) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_9])]) ).

fof(f262,plain,
    ( spl6_6
    | ~ spl6_10 ),
    inference(avatar_split_clause,[],[f252,f164,f123]) ).

fof(f123,plain,
    ( spl6_6
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_6])]) ).

fof(f164,plain,
    ( spl6_10
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK3,sK2)) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_10])]) ).

fof(f252,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3)
    | ~ spl6_10 ),
    inference(resolution,[],[f166,f47]) ).

fof(f47,plain,
    ! [X2,X0,X1] :
      ( member(X1,X2)
      | ~ member(X1,difference(X2,X0)) ),
    inference(cnf_transformation,[],[f29]) ).

fof(f166,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK3,sK2))
    | ~ spl6_10 ),
    inference(avatar_component_clause,[],[f164]) ).

fof(f261,plain,
    ( ~ spl6_7
    | ~ spl6_10 ),
    inference(avatar_split_clause,[],[f253,f164,f135]) ).

fof(f253,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | ~ spl6_10 ),
    inference(resolution,[],[f166,f46]) ).

fof(f46,plain,
    ! [X2,X0,X1] :
      ( ~ member(X1,X0)
      | ~ member(X1,difference(X2,X0)) ),
    inference(cnf_transformation,[],[f29]) ).

fof(f238,plain,
    ( spl6_5
    | ~ spl6_9 ),
    inference(avatar_contradiction_clause,[],[f237]) ).

fof(f237,plain,
    ( $false
    | spl6_5
    | ~ spl6_9 ),
    inference(subsumption_resolution,[],[f228,f120]) ).

fof(f120,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | spl6_5 ),
    inference(avatar_component_clause,[],[f119]) ).

fof(f228,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | ~ spl6_9 ),
    inference(resolution,[],[f162,f47]) ).

fof(f162,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK1,sK2))
    | ~ spl6_9 ),
    inference(avatar_component_clause,[],[f160]) ).

fof(f236,plain,
    ( ~ spl6_7
    | ~ spl6_9 ),
    inference(avatar_contradiction_clause,[],[f235]) ).

fof(f235,plain,
    ( $false
    | ~ spl6_7
    | ~ spl6_9 ),
    inference(subsumption_resolution,[],[f229,f137]) ).

fof(f137,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | ~ spl6_7 ),
    inference(avatar_component_clause,[],[f135]) ).

fof(f229,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | ~ spl6_9 ),
    inference(resolution,[],[f162,f46]) ).

fof(f222,plain,
    ( ~ spl6_6
    | spl6_7
    | spl6_10 ),
    inference(avatar_contradiction_clause,[],[f221]) ).

fof(f221,plain,
    ( $false
    | ~ spl6_6
    | spl6_7
    | spl6_10 ),
    inference(subsumption_resolution,[],[f220,f125]) ).

fof(f125,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3)
    | ~ spl6_6 ),
    inference(avatar_component_clause,[],[f123]) ).

fof(f220,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3)
    | spl6_7
    | spl6_10 ),
    inference(subsumption_resolution,[],[f214,f136]) ).

fof(f214,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3)
    | spl6_10 ),
    inference(resolution,[],[f165,f48]) ).

fof(f165,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK3,sK2))
    | spl6_10 ),
    inference(avatar_component_clause,[],[f164]) ).

fof(f196,plain,
    ( ~ spl6_9
    | spl6_1 ),
    inference(avatar_split_clause,[],[f189,f71,f160]) ).

fof(f71,plain,
    ( spl6_1
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(difference(sK3,sK2),difference(sK1,sK2))) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_1])]) ).

fof(f189,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK1,sK2))
    | spl6_1 ),
    inference(resolution,[],[f72,f42]) ).

fof(f42,plain,
    ! [X2,X0,X1] :
      ( ~ member(X2,X0)
      | member(X2,union(X1,X0)) ),
    inference(cnf_transformation,[],[f23]) ).

fof(f23,plain,
    ! [X0,X1,X2] :
      ( ( member(X2,X1)
        | member(X2,X0)
        | ~ member(X2,union(X1,X0)) )
      & ( member(X2,union(X1,X0))
        | ( ~ member(X2,X1)
          & ~ member(X2,X0) ) ) ),
    inference(rectify,[],[f22]) ).

fof(f22,plain,
    ! [X2,X1,X0] :
      ( ( member(X0,X1)
        | member(X0,X2)
        | ~ member(X0,union(X1,X2)) )
      & ( member(X0,union(X1,X2))
        | ( ~ member(X0,X1)
          & ~ member(X0,X2) ) ) ),
    inference(flattening,[],[f21]) ).

fof(f21,plain,
    ! [X2,X1,X0] :
      ( ( member(X0,X1)
        | member(X0,X2)
        | ~ member(X0,union(X1,X2)) )
      & ( member(X0,union(X1,X2))
        | ( ~ member(X0,X1)
          & ~ member(X0,X2) ) ) ),
    inference(nnf_transformation,[],[f14]) ).

fof(f14,plain,
    ! [X2,X1,X0] :
      ( ( member(X0,X1)
        | member(X0,X2) )
    <=> member(X0,union(X1,X2)) ),
    inference(rectify,[],[f1]) ).

fof(f1,axiom,
    ! [X2,X0,X1] :
      ( member(X2,union(X0,X1))
    <=> ( member(X2,X1)
        | member(X2,X0) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',union_defn) ).

fof(f72,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(difference(sK3,sK2),difference(sK1,sK2)))
    | spl6_1 ),
    inference(avatar_component_clause,[],[f71]) ).

fof(f195,plain,
    ( ~ spl6_10
    | spl6_1 ),
    inference(avatar_split_clause,[],[f188,f71,f164]) ).

fof(f188,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK3,sK2))
    | spl6_1 ),
    inference(resolution,[],[f72,f43]) ).

fof(f43,plain,
    ! [X2,X0,X1] :
      ( member(X2,union(X1,X0))
      | ~ member(X2,X1) ),
    inference(cnf_transformation,[],[f23]) ).

fof(f186,plain,
    ( ~ spl6_7
    | ~ spl6_2 ),
    inference(avatar_split_clause,[],[f180,f75,f135]) ).

fof(f75,plain,
    ( spl6_2
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(union(sK3,sK1),sK2)) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_2])]) ).

fof(f180,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | ~ spl6_2 ),
    inference(resolution,[],[f77,f46]) ).

fof(f77,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(union(sK3,sK1),sK2))
    | ~ spl6_2 ),
    inference(avatar_component_clause,[],[f75]) ).

fof(f167,plain,
    ( spl6_9
    | spl6_10
    | ~ spl6_1 ),
    inference(avatar_split_clause,[],[f153,f71,f164,f160]) ).

fof(f153,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK3,sK2))
    | member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(sK1,sK2))
    | ~ spl6_1 ),
    inference(resolution,[],[f73,f44]) ).

fof(f44,plain,
    ! [X2,X0,X1] :
      ( member(X2,X0)
      | member(X2,X1)
      | ~ member(X2,union(X1,X0)) ),
    inference(cnf_transformation,[],[f23]) ).

fof(f73,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(difference(sK3,sK2),difference(sK1,sK2)))
    | ~ spl6_1 ),
    inference(avatar_component_clause,[],[f71]) ).

fof(f151,plain,
    ( ~ spl6_5
    | spl6_8 ),
    inference(avatar_split_clause,[],[f144,f139,f119]) ).

fof(f139,plain,
    ( spl6_8
  <=> member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(sK3,sK1)) ),
    introduced(avatar_definition,[new_symbols(naming,[spl6_8])]) ).

fof(f144,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | spl6_8 ),
    inference(resolution,[],[f141,f42]) ).

fof(f141,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(sK3,sK1))
    | spl6_8 ),
    inference(avatar_component_clause,[],[f139]) ).

fof(f150,plain,
    ( ~ spl6_6
    | spl6_8 ),
    inference(avatar_split_clause,[],[f143,f139,f123]) ).

fof(f143,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3)
    | spl6_8 ),
    inference(resolution,[],[f141,f43]) ).

fof(f142,plain,
    ( spl6_7
    | ~ spl6_8
    | spl6_2 ),
    inference(avatar_split_clause,[],[f128,f75,f139,f135]) ).

fof(f128,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(sK3,sK1))
    | member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK2)
    | spl6_2 ),
    inference(resolution,[],[f76,f48]) ).

fof(f76,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(union(sK3,sK1),sK2))
    | spl6_2 ),
    inference(avatar_component_clause,[],[f75]) ).

fof(f126,plain,
    ( spl6_5
    | spl6_6
    | ~ spl6_2 ),
    inference(avatar_split_clause,[],[f112,f75,f123,f119]) ).

fof(f112,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK3)
    | member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),sK1)
    | ~ spl6_2 ),
    inference(resolution,[],[f92,f44]) ).

fof(f92,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(sK3,sK1))
    | ~ spl6_2 ),
    inference(resolution,[],[f77,f47]) ).

fof(f88,plain,
    ( ~ spl6_2
    | ~ spl6_1 ),
    inference(avatar_split_clause,[],[f69,f71,f75]) ).

fof(f69,plain,
    ( ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(difference(sK3,sK2),difference(sK1,sK2)))
    | ~ member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(union(sK3,sK1),sK2)) ),
    inference(resolution,[],[f63,f61]) ).

fof(f61,plain,
    ! [X0,X1] :
      ( sQ5_eqProxy(X0,X1)
      | ~ member(sK0(X0,X1),X1)
      | ~ member(sK0(X0,X1),X0) ),
    inference(equality_proxy_replacement,[],[f41,f60]) ).

fof(f60,plain,
    ! [X0,X1] :
      ( sQ5_eqProxy(X0,X1)
    <=> X0 = X1 ),
    introduced(equality_proxy_definition,[new_symbols(naming,[sQ5_eqProxy])]) ).

fof(f41,plain,
    ! [X0,X1] :
      ( X0 = X1
      | ~ member(sK0(X0,X1),X0)
      | ~ member(sK0(X0,X1),X1) ),
    inference(cnf_transformation,[],[f20]) ).

fof(f20,plain,
    ! [X0,X1] :
      ( ( X0 = X1
        | ( ( ~ member(sK0(X0,X1),X0)
            | ~ member(sK0(X0,X1),X1) )
          & ( member(sK0(X0,X1),X0)
            | member(sK0(X0,X1),X1) ) ) )
      & ( ! [X3] :
            ( ( member(X3,X1)
              | ~ member(X3,X0) )
            & ( member(X3,X0)
              | ~ member(X3,X1) ) )
        | X0 != X1 ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0])],[f18,f19]) ).

fof(f19,plain,
    ! [X0,X1] :
      ( ? [X2] :
          ( ( ~ member(X2,X0)
            | ~ member(X2,X1) )
          & ( member(X2,X0)
            | member(X2,X1) ) )
     => ( ( ~ member(sK0(X0,X1),X0)
          | ~ member(sK0(X0,X1),X1) )
        & ( member(sK0(X0,X1),X0)
          | member(sK0(X0,X1),X1) ) ) ),
    introduced(choice_axiom,[]) ).

fof(f18,plain,
    ! [X0,X1] :
      ( ( X0 = X1
        | ? [X2] :
            ( ( ~ member(X2,X0)
              | ~ member(X2,X1) )
            & ( member(X2,X0)
              | member(X2,X1) ) ) )
      & ( ! [X3] :
            ( ( member(X3,X1)
              | ~ member(X3,X0) )
            & ( member(X3,X0)
              | ~ member(X3,X1) ) )
        | X0 != X1 ) ),
    inference(rectify,[],[f17]) ).

fof(f17,plain,
    ! [X1,X0] :
      ( ( X0 = X1
        | ? [X2] :
            ( ( ~ member(X2,X1)
              | ~ member(X2,X0) )
            & ( member(X2,X1)
              | member(X2,X0) ) ) )
      & ( ! [X2] :
            ( ( member(X2,X0)
              | ~ member(X2,X1) )
            & ( member(X2,X1)
              | ~ member(X2,X0) ) )
        | X0 != X1 ) ),
    inference(nnf_transformation,[],[f10]) ).

fof(f10,plain,
    ! [X1,X0] :
      ( X0 = X1
    <=> ! [X2] :
          ( member(X2,X0)
        <=> member(X2,X1) ) ),
    inference(rectify,[],[f7]) ).

fof(f7,axiom,
    ! [X1,X0] :
      ( X0 = X1
    <=> ! [X2] :
          ( member(X2,X1)
        <=> member(X2,X0) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equal_member_defn) ).

fof(f63,plain,
    ~ sQ5_eqProxy(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),
    inference(equality_proxy_replacement,[],[f45,f60]) ).

fof(f45,plain,
    union(difference(sK3,sK2),difference(sK1,sK2)) != difference(union(sK3,sK1),sK2),
    inference(cnf_transformation,[],[f26]) ).

fof(f26,plain,
    union(difference(sK3,sK2),difference(sK1,sK2)) != difference(union(sK3,sK1),sK2),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK1,sK2,sK3])],[f24,f25]) ).

fof(f25,plain,
    ( ? [X0,X1,X2] : union(difference(X2,X1),difference(X0,X1)) != difference(union(X2,X0),X1)
   => union(difference(sK3,sK2),difference(sK1,sK2)) != difference(union(sK3,sK1),sK2) ),
    introduced(choice_axiom,[]) ).

fof(f24,plain,
    ? [X0,X1,X2] : union(difference(X2,X1),difference(X0,X1)) != difference(union(X2,X0),X1),
    inference(rectify,[],[f15]) ).

fof(f15,plain,
    ? [X1,X2,X0] : difference(union(X0,X1),X2) != union(difference(X0,X2),difference(X1,X2)),
    inference(ennf_transformation,[],[f9]) ).

fof(f9,negated_conjecture,
    ~ ! [X1,X2,X0] : difference(union(X0,X1),X2) = union(difference(X0,X2),difference(X1,X2)),
    inference(negated_conjecture,[],[f8]) ).

fof(f8,conjecture,
    ! [X1,X2,X0] : difference(union(X0,X1),X2) = union(difference(X0,X2),difference(X1,X2)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_difference_distributes_over_union) ).

fof(f78,plain,
    ( spl6_1
    | spl6_2 ),
    inference(avatar_split_clause,[],[f68,f75,f71]) ).

fof(f68,plain,
    ( member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),difference(union(sK3,sK1),sK2))
    | member(sK0(union(difference(sK3,sK2),difference(sK1,sK2)),difference(union(sK3,sK1),sK2)),union(difference(sK3,sK2),difference(sK1,sK2))) ),
    inference(resolution,[],[f63,f62]) ).

fof(f62,plain,
    ! [X0,X1] :
      ( member(sK0(X0,X1),X0)
      | member(sK0(X0,X1),X1)
      | sQ5_eqProxy(X0,X1) ),
    inference(equality_proxy_replacement,[],[f40,f60]) ).

fof(f40,plain,
    ! [X0,X1] :
      ( X0 = X1
      | member(sK0(X0,X1),X0)
      | member(sK0(X0,X1),X1) ),
    inference(cnf_transformation,[],[f20]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.13  % Problem    : SET615+3 : TPTP v8.1.0. Released v2.2.0.
% 0.07/0.14  % Command    : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule snake_tptp_uns --cores 0 -t %d %s
% 0.13/0.35  % Computer : n020.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit   : 300
% 0.13/0.35  % WCLimit    : 300
% 0.13/0.35  % DateTime   : Tue Aug 30 14:10:30 EDT 2022
% 0.13/0.35  % CPUTime    : 
% 0.21/0.50  % (12734)lrs+10_1:1_br=off:sos=on:ss=axioms:st=2.0:urr=on:i=33:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/33Mi)
% 0.21/0.51  % (12734)Refutation not found, incomplete strategy% (12734)------------------------------
% 0.21/0.51  % (12734)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.51  % (12734)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.51  % (12734)Termination reason: Refutation not found, incomplete strategy
% 0.21/0.51  
% 0.21/0.51  % (12734)Memory used [KB]: 5884
% 0.21/0.51  % (12734)Time elapsed: 0.093 s
% 0.21/0.51  % (12734)Instructions burned: 2 (million)
% 0.21/0.51  % (12734)------------------------------
% 0.21/0.51  % (12734)------------------------------
% 0.21/0.51  % (12726)lrs+10_1:1_gsp=on:sd=1:sgt=32:sos=on:ss=axioms:i=13:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/13Mi)
% 0.21/0.51  % (12726)Refutation not found, incomplete strategy% (12726)------------------------------
% 0.21/0.51  % (12726)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.51  % (12726)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.51  % (12726)Termination reason: Refutation not found, incomplete strategy
% 0.21/0.51  
% 0.21/0.51  % (12726)Memory used [KB]: 5884
% 0.21/0.51  % (12726)Time elapsed: 0.093 s
% 0.21/0.51  % (12726)Instructions burned: 1 (million)
% 0.21/0.51  % (12726)------------------------------
% 0.21/0.51  % (12726)------------------------------
% 0.21/0.51  % (12752)dis+21_1:1_aac=none:abs=on:er=known:fde=none:fsr=off:nwc=5.0:s2a=on:s2at=4.0:sp=const_frequency:to=lpo:urr=ec_only:i=25:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/25Mi)
% 0.21/0.52  % (12735)lrs+10_1:1_ep=R:lcm=predicate:lma=on:sos=all:spb=goal:ss=included:i=12:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/12Mi)
% 0.21/0.52  % (12732)lrs+2_1:1_lcm=reverse:lma=on:sos=all:spb=goal_then_units:ss=included:urr=on:i=39:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/39Mi)
% 0.21/0.52  % (12747)dis+1010_2:3_fs=off:fsr=off:nm=0:nwc=5.0:s2a=on:s2agt=32:i=82:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/82Mi)
% 0.21/0.53  % (12751)lrs+1011_1:1_fd=preordered:fsd=on:sos=on:thsq=on:thsqc=64:thsqd=32:uwa=ground:i=99:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/99Mi)
% 0.21/0.53  % (12727)dis+1002_1:1_aac=none:bd=off:sac=on:sos=on:spb=units:i=3:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/3Mi)
% 0.21/0.53  % (12751)Refutation not found, incomplete strategy% (12751)------------------------------
% 0.21/0.53  % (12751)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.53  % (12751)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.53  % (12751)Termination reason: Refutation not found, incomplete strategy
% 0.21/0.53  
% 0.21/0.53  % (12751)Memory used [KB]: 5884
% 0.21/0.53  % (12751)Time elapsed: 0.128 s
% 0.21/0.53  % (12751)Instructions burned: 2 (million)
% 0.21/0.53  % (12751)------------------------------
% 0.21/0.53  % (12751)------------------------------
% 0.21/0.53  % (12739)lrs+10_1:1_ins=3:sp=reverse_frequency:spb=goal:to=lpo:i=3:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/3Mi)
% 0.21/0.53  % (12728)lrs+10_5:1_br=off:fde=none:nwc=3.0:sd=1:sgt=10:sos=on:ss=axioms:urr=on:i=51:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/51Mi)
% 0.21/0.53  % (12727)Refutation not found, incomplete strategy% (12727)------------------------------
% 0.21/0.53  % (12727)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.53  % (12727)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.53  % (12727)Termination reason: Refutation not found, incomplete strategy
% 0.21/0.53  
% 0.21/0.53  % (12727)Memory used [KB]: 5884
% 0.21/0.53  % (12727)Time elapsed: 0.128 s
% 0.21/0.53  % (12727)Instructions burned: 2 (million)
% 0.21/0.53  % (12727)------------------------------
% 0.21/0.53  % (12727)------------------------------
% 0.21/0.53  % (12725)dis+1002_1:12_drc=off:fd=preordered:tgt=full:i=99978:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/99978Mi)
% 0.21/0.54  % (12729)lrs+10_1:1024_nm=0:nwc=5.0:ss=axioms:i=13:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/13Mi)
% 0.21/0.54  % (12728)Refutation not found, incomplete strategy% (12728)------------------------------
% 0.21/0.54  % (12728)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.54  % (12728)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.54  % (12728)Termination reason: Refutation not found, incomplete strategy
% 0.21/0.54  
% 0.21/0.54  % (12728)Memory used [KB]: 5884
% 0.21/0.54  % (12728)Time elapsed: 0.125 s
% 0.21/0.54  % (12728)Instructions burned: 1 (million)
% 0.21/0.54  % (12728)------------------------------
% 0.21/0.54  % (12728)------------------------------
% 0.21/0.54  % (12735)First to succeed.
% 0.21/0.54  % (12754)lrs-11_1:1_nm=0:sac=on:sd=4:ss=axioms:st=3.0:i=24:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/24Mi)
% 0.21/0.54  % (12739)Instruction limit reached!
% 0.21/0.54  % (12739)------------------------------
% 0.21/0.54  % (12739)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.54  % (12739)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.54  % (12739)Termination reason: Unknown
% 0.21/0.54  % (12739)Termination phase: Saturation
% 0.21/0.54  
% 0.21/0.54  % (12739)Memory used [KB]: 6012
% 0.21/0.54  % (12739)Time elapsed: 0.098 s
% 0.21/0.54  % (12739)Instructions burned: 4 (million)
% 0.21/0.54  % (12739)------------------------------
% 0.21/0.54  % (12739)------------------------------
% 0.21/0.54  % (12735)Refutation found. Thanks to Tanya!
% 0.21/0.54  % SZS status Theorem for theBenchmark
% 0.21/0.54  % SZS output start Proof for theBenchmark
% See solution above
% 0.21/0.54  % (12735)------------------------------
% 0.21/0.54  % (12735)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.21/0.54  % (12735)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.21/0.54  % (12735)Termination reason: Refutation
% 0.21/0.54  
% 0.21/0.54  % (12735)Memory used [KB]: 6012
% 0.21/0.54  % (12735)Time elapsed: 0.111 s
% 0.21/0.54  % (12735)Instructions burned: 5 (million)
% 0.21/0.54  % (12735)------------------------------
% 0.21/0.54  % (12735)------------------------------
% 0.21/0.54  % (12724)Success in time 0.178 s
%------------------------------------------------------------------------------