TSTP Solution File: SET921+1 by Vampire-SAT---4.8

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Vampire-SAT---4.8
% Problem  : SET921+1 : TPTP v8.1.2. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --ignore_missing on --mode portfolio/casc [--schedule casc_hol_2020] -p tptp -om szs -t %d %s

% Computer : n006.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 : Sat Sep  2 00:03:31 EDT 2023

% Result   : Theorem 0.22s 0.43s
% Output   : Refutation 0.22s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   15
%            Number of leaves      :    7
% Syntax   : Number of formulae    :   49 (   7 unt;   0 def)
%            Number of atoms       :  223 (  58 equ)
%            Maximal formula atoms :   14 (   4 avg)
%            Number of connectives :  279 ( 105   ~; 110   |;  51   &)
%                                         (   9 <=>;   3  =>;   0  <=;   1 <~>)
%            Maximal formula depth :   11 (   6 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    4 (   2 usr;   1 prp; 0-3 aty)
%            Number of functors    :    7 (   7 usr;   3 con; 0-3 aty)
%            Number of variables   :  109 (;  90   !;  19   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f87,plain,
    $false,
    inference(resolution,[],[f83,f58]) ).

fof(f58,plain,
    ! [X0] : in(X0,singleton(X0)),
    inference(equality_resolution,[],[f57]) ).

fof(f57,plain,
    ! [X0,X1] :
      ( X0 != X1
      | in(X1,singleton(X0)) ),
    inference(equality_resolution,[],[f35]) ).

fof(f35,plain,
    ! [X3,X0,X1] :
      ( singleton(X0) != X1
      | X0 != X3
      | in(X3,X1) ),
    inference(cnf_transformation,[],[f19]) ).

fof(f19,plain,
    ! [X0,X1] :
      ( ( singleton(X0) = X1
        | ( ( sK4(X0,X1) != X0
            | ~ in(sK4(X0,X1),X1) )
          & ( sK4(X0,X1) = X0
            | in(sK4(X0,X1),X1) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X1)
              | X0 != X3 )
            & ( X0 = X3
              | ~ in(X3,X1) ) )
        | singleton(X0) != X1 ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK4])],[f17,f18]) ).

fof(f18,plain,
    ! [X0,X1] :
      ( ? [X2] :
          ( ( X0 != X2
            | ~ in(X2,X1) )
          & ( X0 = X2
            | in(X2,X1) ) )
     => ( ( sK4(X0,X1) != X0
          | ~ in(sK4(X0,X1),X1) )
        & ( sK4(X0,X1) = X0
          | in(sK4(X0,X1),X1) ) ) ),
    introduced(choice_axiom,[]) ).

fof(f17,plain,
    ! [X0,X1] :
      ( ( singleton(X0) = X1
        | ? [X2] :
            ( ( X0 != X2
              | ~ in(X2,X1) )
            & ( X0 = X2
              | in(X2,X1) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X1)
              | X0 != X3 )
            & ( X0 = X3
              | ~ in(X3,X1) ) )
        | singleton(X0) != X1 ) ),
    inference(rectify,[],[f16]) ).

fof(f16,plain,
    ! [X0,X1] :
      ( ( singleton(X0) = X1
        | ? [X2] :
            ( ( X0 != X2
              | ~ in(X2,X1) )
            & ( X0 = X2
              | in(X2,X1) ) ) )
      & ( ! [X2] :
            ( ( in(X2,X1)
              | X0 != X2 )
            & ( X0 = X2
              | ~ in(X2,X1) ) )
        | singleton(X0) != X1 ) ),
    inference(nnf_transformation,[],[f2]) ).

fof(f2,axiom,
    ! [X0,X1] :
      ( singleton(X0) = X1
    <=> ! [X2] :
          ( in(X2,X1)
        <=> X0 = X2 ) ),
    file('/export/starexec/sandbox/tmp/tmp.U0FYAJKpew/Vampire---4.8_29815',d1_tarski) ).

fof(f83,plain,
    ~ in(sK1,singleton(sK1)),
    inference(resolution,[],[f82,f67]) ).

fof(f67,plain,
    ! [X2,X0,X1] :
      ( ~ in(X0,set_difference(X1,X2))
      | ~ in(X0,X2) ),
    inference(resolution,[],[f39,f54]) ).

fof(f54,plain,
    ! [X0,X1] : sP0(X0,X1,set_difference(X1,X0)),
    inference(equality_resolution,[],[f44]) ).

fof(f44,plain,
    ! [X2,X0,X1] :
      ( set_difference(X0,X1) != X2
      | sP0(X1,X0,X2) ),
    inference(cnf_transformation,[],[f25]) ).

fof(f25,plain,
    ! [X0,X1,X2] :
      ( ( set_difference(X0,X1) = X2
        | ~ sP0(X1,X0,X2) )
      & ( sP0(X1,X0,X2)
        | set_difference(X0,X1) != X2 ) ),
    inference(nnf_transformation,[],[f11]) ).

fof(f11,plain,
    ! [X0,X1,X2] :
      ( set_difference(X0,X1) = X2
    <=> sP0(X1,X0,X2) ),
    inference(definition_folding,[],[f3,f10]) ).

fof(f10,plain,
    ! [X1,X0,X2] :
      ( sP0(X1,X0,X2)
    <=> ! [X3] :
          ( in(X3,X2)
        <=> ( ~ in(X3,X1)
            & in(X3,X0) ) ) ),
    introduced(predicate_definition_introduction,[new_symbols(naming,[sP0])]) ).

fof(f3,axiom,
    ! [X0,X1,X2] :
      ( set_difference(X0,X1) = X2
    <=> ! [X3] :
          ( in(X3,X2)
        <=> ( ~ in(X3,X1)
            & in(X3,X0) ) ) ),
    file('/export/starexec/sandbox/tmp/tmp.U0FYAJKpew/Vampire---4.8_29815',d4_xboole_0) ).

fof(f39,plain,
    ! [X2,X0,X1,X4] :
      ( ~ sP0(X0,X1,X2)
      | ~ in(X4,X2)
      | ~ in(X4,X0) ),
    inference(cnf_transformation,[],[f24]) ).

fof(f24,plain,
    ! [X0,X1,X2] :
      ( ( sP0(X0,X1,X2)
        | ( ( in(sK5(X0,X1,X2),X0)
            | ~ in(sK5(X0,X1,X2),X1)
            | ~ in(sK5(X0,X1,X2),X2) )
          & ( ( ~ in(sK5(X0,X1,X2),X0)
              & in(sK5(X0,X1,X2),X1) )
            | in(sK5(X0,X1,X2),X2) ) ) )
      & ( ! [X4] :
            ( ( in(X4,X2)
              | in(X4,X0)
              | ~ in(X4,X1) )
            & ( ( ~ in(X4,X0)
                & in(X4,X1) )
              | ~ in(X4,X2) ) )
        | ~ sP0(X0,X1,X2) ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK5])],[f22,f23]) ).

fof(f23,plain,
    ! [X0,X1,X2] :
      ( ? [X3] :
          ( ( in(X3,X0)
            | ~ in(X3,X1)
            | ~ in(X3,X2) )
          & ( ( ~ in(X3,X0)
              & in(X3,X1) )
            | in(X3,X2) ) )
     => ( ( in(sK5(X0,X1,X2),X0)
          | ~ in(sK5(X0,X1,X2),X1)
          | ~ in(sK5(X0,X1,X2),X2) )
        & ( ( ~ in(sK5(X0,X1,X2),X0)
            & in(sK5(X0,X1,X2),X1) )
          | in(sK5(X0,X1,X2),X2) ) ) ),
    introduced(choice_axiom,[]) ).

fof(f22,plain,
    ! [X0,X1,X2] :
      ( ( sP0(X0,X1,X2)
        | ? [X3] :
            ( ( in(X3,X0)
              | ~ in(X3,X1)
              | ~ in(X3,X2) )
            & ( ( ~ in(X3,X0)
                & in(X3,X1) )
              | in(X3,X2) ) ) )
      & ( ! [X4] :
            ( ( in(X4,X2)
              | in(X4,X0)
              | ~ in(X4,X1) )
            & ( ( ~ in(X4,X0)
                & in(X4,X1) )
              | ~ in(X4,X2) ) )
        | ~ sP0(X0,X1,X2) ) ),
    inference(rectify,[],[f21]) ).

fof(f21,plain,
    ! [X1,X0,X2] :
      ( ( sP0(X1,X0,X2)
        | ? [X3] :
            ( ( in(X3,X1)
              | ~ in(X3,X0)
              | ~ in(X3,X2) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | in(X3,X2) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X2)
              | in(X3,X1)
              | ~ in(X3,X0) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | ~ in(X3,X2) ) )
        | ~ sP0(X1,X0,X2) ) ),
    inference(flattening,[],[f20]) ).

fof(f20,plain,
    ! [X1,X0,X2] :
      ( ( sP0(X1,X0,X2)
        | ? [X3] :
            ( ( in(X3,X1)
              | ~ in(X3,X0)
              | ~ in(X3,X2) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | in(X3,X2) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X2)
              | in(X3,X1)
              | ~ in(X3,X0) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | ~ in(X3,X2) ) )
        | ~ sP0(X1,X0,X2) ) ),
    inference(nnf_transformation,[],[f10]) ).

fof(f82,plain,
    in(sK1,set_difference(sK2,singleton(sK1))),
    inference(trivial_inequality_removal,[],[f81]) ).

fof(f81,plain,
    ( sK1 != sK1
    | in(sK1,set_difference(sK2,singleton(sK1))) ),
    inference(backward_demodulation,[],[f48,f80]) ).

fof(f80,plain,
    sK1 = sK3,
    inference(resolution,[],[f79,f64]) ).

fof(f64,plain,
    in(sK1,sK2),
    inference(duplicate_literal_removal,[],[f63]) ).

fof(f63,plain,
    ( in(sK1,sK2)
    | in(sK1,sK2) ),
    inference(resolution,[],[f62,f30]) ).

fof(f30,plain,
    ( in(sK1,set_difference(sK2,singleton(sK3)))
    | in(sK1,sK2) ),
    inference(cnf_transformation,[],[f15]) ).

fof(f15,plain,
    ( ( sK1 = sK3
      | ~ in(sK1,sK2)
      | ~ in(sK1,set_difference(sK2,singleton(sK3))) )
    & ( ( sK1 != sK3
        & in(sK1,sK2) )
      | in(sK1,set_difference(sK2,singleton(sK3))) ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK1,sK2,sK3])],[f13,f14]) ).

fof(f14,plain,
    ( ? [X0,X1,X2] :
        ( ( X0 = X2
          | ~ in(X0,X1)
          | ~ in(X0,set_difference(X1,singleton(X2))) )
        & ( ( X0 != X2
            & in(X0,X1) )
          | in(X0,set_difference(X1,singleton(X2))) ) )
   => ( ( sK1 = sK3
        | ~ in(sK1,sK2)
        | ~ in(sK1,set_difference(sK2,singleton(sK3))) )
      & ( ( sK1 != sK3
          & in(sK1,sK2) )
        | in(sK1,set_difference(sK2,singleton(sK3))) ) ) ),
    introduced(choice_axiom,[]) ).

fof(f13,plain,
    ? [X0,X1,X2] :
      ( ( X0 = X2
        | ~ in(X0,X1)
        | ~ in(X0,set_difference(X1,singleton(X2))) )
      & ( ( X0 != X2
          & in(X0,X1) )
        | in(X0,set_difference(X1,singleton(X2))) ) ),
    inference(flattening,[],[f12]) ).

fof(f12,plain,
    ? [X0,X1,X2] :
      ( ( X0 = X2
        | ~ in(X0,X1)
        | ~ in(X0,set_difference(X1,singleton(X2))) )
      & ( ( X0 != X2
          & in(X0,X1) )
        | in(X0,set_difference(X1,singleton(X2))) ) ),
    inference(nnf_transformation,[],[f8]) ).

fof(f8,plain,
    ? [X0,X1,X2] :
      ( in(X0,set_difference(X1,singleton(X2)))
    <~> ( X0 != X2
        & in(X0,X1) ) ),
    inference(ennf_transformation,[],[f7]) ).

fof(f7,negated_conjecture,
    ~ ! [X0,X1,X2] :
        ( in(X0,set_difference(X1,singleton(X2)))
      <=> ( X0 != X2
          & in(X0,X1) ) ),
    inference(negated_conjecture,[],[f6]) ).

fof(f6,conjecture,
    ! [X0,X1,X2] :
      ( in(X0,set_difference(X1,singleton(X2)))
    <=> ( X0 != X2
        & in(X0,X1) ) ),
    file('/export/starexec/sandbox/tmp/tmp.U0FYAJKpew/Vampire---4.8_29815',t64_zfmisc_1) ).

fof(f62,plain,
    ! [X2,X0,X1] :
      ( ~ in(X0,set_difference(X1,X2))
      | in(X0,X1) ),
    inference(resolution,[],[f38,f54]) ).

fof(f38,plain,
    ! [X2,X0,X1,X4] :
      ( ~ sP0(X0,X1,X2)
      | ~ in(X4,X2)
      | in(X4,X1) ),
    inference(cnf_transformation,[],[f24]) ).

fof(f79,plain,
    ( ~ in(sK1,sK2)
    | sK1 = sK3 ),
    inference(duplicate_literal_removal,[],[f76]) ).

fof(f76,plain,
    ( ~ in(sK1,sK2)
    | sK1 = sK3
    | sK1 = sK3 ),
    inference(resolution,[],[f75,f56]) ).

fof(f56,plain,
    ! [X0,X1] :
      ( ~ in(X0,singleton(X1))
      | X0 = X1 ),
    inference(equality_resolution,[],[f34]) ).

fof(f34,plain,
    ! [X3,X0,X1] :
      ( singleton(X0) != X1
      | ~ in(X3,X1)
      | X0 = X3 ),
    inference(cnf_transformation,[],[f19]) ).

fof(f75,plain,
    ( in(sK1,singleton(sK3))
    | ~ in(sK1,sK2)
    | sK1 = sK3 ),
    inference(duplicate_literal_removal,[],[f74]) ).

fof(f74,plain,
    ( ~ in(sK1,sK2)
    | in(sK1,singleton(sK3))
    | ~ in(sK1,sK2)
    | sK1 = sK3 ),
    inference(resolution,[],[f68,f32]) ).

fof(f32,plain,
    ( ~ in(sK1,set_difference(sK2,singleton(sK3)))
    | ~ in(sK1,sK2)
    | sK1 = sK3 ),
    inference(cnf_transformation,[],[f15]) ).

fof(f68,plain,
    ! [X2,X0,X1] :
      ( in(X0,set_difference(X2,X1))
      | ~ in(X0,X2)
      | in(X0,X1) ),
    inference(resolution,[],[f40,f54]) ).

fof(f40,plain,
    ! [X2,X0,X1,X4] :
      ( ~ sP0(X0,X1,X2)
      | in(X4,X0)
      | ~ in(X4,X1)
      | in(X4,X2) ),
    inference(cnf_transformation,[],[f24]) ).

fof(f48,plain,
    ( sK1 != sK3
    | in(sK1,set_difference(sK2,singleton(sK1))) ),
    inference(inner_rewriting,[],[f31]) ).

fof(f31,plain,
    ( sK1 != sK3
    | in(sK1,set_difference(sK2,singleton(sK3))) ),
    inference(cnf_transformation,[],[f15]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.13/0.12  % Problem    : SET921+1 : TPTP v8.1.2. Released v3.2.0.
% 0.13/0.14  % Command    : vampire --ignore_missing on --mode portfolio/casc [--schedule casc_hol_2020] -p tptp -om szs -t %d %s
% 0.15/0.36  % Computer : n006.cluster.edu
% 0.15/0.36  % Model    : x86_64 x86_64
% 0.15/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.36  % Memory   : 8042.1875MB
% 0.15/0.36  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.36  % CPULimit   : 300
% 0.15/0.36  % WCLimit    : 300
% 0.15/0.36  % DateTime   : Wed Aug 30 15:42:05 EDT 2023
% 0.15/0.36  % CPUTime    : 
% 0.22/0.42  % (30048)Running in auto input_syntax mode. Trying TPTP
% 0.22/0.42  % (30098)fmb+10_1_bce=on:fmbas=function:fmbsr=1.2:fde=unused:nm=0_846 on Vampire---4 for (846ds/0Mi)
% 0.22/0.42  % (30101)fmb+10_1_bce=on:fmbsr=1.5:nm=32_533 on Vampire---4 for (533ds/0Mi)
% 0.22/0.42  % (30099)fmb+10_1_bce=on:fmbdsb=on:fmbes=contour:fmbswr=3:fde=none:nm=0_793 on Vampire---4 for (793ds/0Mi)
% 0.22/0.42  % (30103)ott-10_8_av=off:bd=preordered:bs=on:fsd=off:fsr=off:fde=unused:irw=on:lcm=predicate:lma=on:nm=4:nwc=1.7:sp=frequency_522 on Vampire---4 for (522ds/0Mi)
% 0.22/0.42  % (30104)ott+1_64_av=off:bd=off:bce=on:fsd=off:fde=unused:gsp=on:irw=on:lcm=predicate:lma=on:nm=2:nwc=1.1:sims=off:urr=on_497 on Vampire---4 for (497ds/0Mi)
% 0.22/0.42  % (30100)dis+2_11_add=large:afr=on:amm=off:bd=off:bce=on:fsd=off:fde=none:gs=on:gsaa=full_model:gsem=off:irw=on:msp=off:nm=4:nwc=1.3:sas=z3:sims=off:sac=on:sp=reverse_arity_569 on Vampire---4 for (569ds/0Mi)
% 0.22/0.42  % (30102)ott+10_10:1_add=off:afr=on:amm=off:anc=all:bd=off:bs=on:fsr=off:irw=on:lma=on:msp=off:nm=4:nwc=4.0:sac=on:sp=reverse_frequency_531 on Vampire---4 for (531ds/0Mi)
% 0.22/0.42  TRYING [1]
% 0.22/0.42  TRYING [2]
% 0.22/0.42  TRYING [3]
% 0.22/0.42  % (30103)First to succeed.
% 0.22/0.43  TRYING [1]
% 0.22/0.43  % (30103)Refutation found. Thanks to Tanya!
% 0.22/0.43  % SZS status Theorem for Vampire---4
% 0.22/0.43  % SZS output start Proof for Vampire---4
% See solution above
% 0.22/0.43  % (30103)------------------------------
% 0.22/0.43  % (30103)Version: Vampire 4.7 (commit 05ef610bd on 2023-06-21 19:03:17 +0100)
% 0.22/0.43  % (30103)Linked with Z3 4.9.1.0 6ed071b44407cf6623b8d3c0dceb2a8fb7040cee z3-4.8.4-6427-g6ed071b44
% 0.22/0.43  % (30103)Termination reason: Refutation
% 0.22/0.43  
% 0.22/0.43  % (30103)Memory used [KB]: 895
% 0.22/0.43  % (30103)Time elapsed: 0.006 s
% 0.22/0.43  % (30103)------------------------------
% 0.22/0.43  % (30103)------------------------------
% 0.22/0.43  % (30048)Success in time 0.065 s
% 0.22/0.43  % Vampire---4.8 exiting
%------------------------------------------------------------------------------