TSTP Solution File: SWC332+1 by Vampire---4.8

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Vampire---4.8
% Problem  : SWC332+1 : TPTP v8.1.2. Released v2.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule file --schedule_file /export/starexec/sandbox2/solver/bin/quickGreedyProduceRating_steal_pow3.txt --cores 8 -m 12000 -t %d %s

% Computer : n012.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 : Sun May  5 09:50:22 EDT 2024

% Result   : Theorem 0.64s 0.82s
% Output   : Refutation 0.64s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   14
%            Number of leaves      :   16
% Syntax   : Number of formulae    :   69 (  11 unt;   0 def)
%            Number of atoms       :  298 (  56 equ)
%            Maximal formula atoms :   22 (   4 avg)
%            Number of connectives :  343 ( 114   ~; 109   |;  92   &)
%                                         (  10 <=>;  18  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   15 (   5 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :   12 (  10 usr;   5 prp; 0-2 aty)
%            Number of functors    :    7 (   7 usr;   5 con; 0-2 aty)
%            Number of variables   :   63 (  34   !;  29   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f304,plain,
    $false,
    inference(avatar_sat_refutation,[],[f248,f257,f258,f285,f303]) ).

fof(f303,plain,
    ( spl15_2
    | ~ spl15_3 ),
    inference(avatar_contradiction_clause,[],[f302]) ).

fof(f302,plain,
    ( $false
    | spl15_2
    | ~ spl15_3 ),
    inference(subsumption_resolution,[],[f301,f168]) ).

fof(f168,plain,
    ssList(sK2),
    inference(cnf_transformation,[],[f138]) ).

fof(f138,plain,
    ( ( ~ equalelemsP(sK0)
      | ~ segmentP(sK1,sK0) )
    & ( ~ neq(sK3,nil)
      | singletonP(sK2) )
    & segmentP(sK3,sK2)
    & sK0 = sK2
    & sK1 = sK3
    & ssList(sK3)
    & ssList(sK2)
    & ssList(sK1)
    & ssList(sK0) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3])],[f99,f137,f136,f135,f134]) ).

fof(f134,plain,
    ( ? [X0] :
        ( ? [X1] :
            ( ? [X2] :
                ( ? [X3] :
                    ( ( ~ equalelemsP(X0)
                      | ~ segmentP(X1,X0) )
                    & ( ~ neq(X3,nil)
                      | singletonP(X2) )
                    & segmentP(X3,X2)
                    & X0 = X2
                    & X1 = X3
                    & ssList(X3) )
                & ssList(X2) )
            & ssList(X1) )
        & ssList(X0) )
   => ( ? [X1] :
          ( ? [X2] :
              ( ? [X3] :
                  ( ( ~ equalelemsP(sK0)
                    | ~ segmentP(X1,sK0) )
                  & ( ~ neq(X3,nil)
                    | singletonP(X2) )
                  & segmentP(X3,X2)
                  & sK0 = X2
                  & X1 = X3
                  & ssList(X3) )
              & ssList(X2) )
          & ssList(X1) )
      & ssList(sK0) ) ),
    introduced(choice_axiom,[]) ).

fof(f135,plain,
    ( ? [X1] :
        ( ? [X2] :
            ( ? [X3] :
                ( ( ~ equalelemsP(sK0)
                  | ~ segmentP(X1,sK0) )
                & ( ~ neq(X3,nil)
                  | singletonP(X2) )
                & segmentP(X3,X2)
                & sK0 = X2
                & X1 = X3
                & ssList(X3) )
            & ssList(X2) )
        & ssList(X1) )
   => ( ? [X2] :
          ( ? [X3] :
              ( ( ~ equalelemsP(sK0)
                | ~ segmentP(sK1,sK0) )
              & ( ~ neq(X3,nil)
                | singletonP(X2) )
              & segmentP(X3,X2)
              & sK0 = X2
              & sK1 = X3
              & ssList(X3) )
          & ssList(X2) )
      & ssList(sK1) ) ),
    introduced(choice_axiom,[]) ).

fof(f136,plain,
    ( ? [X2] :
        ( ? [X3] :
            ( ( ~ equalelemsP(sK0)
              | ~ segmentP(sK1,sK0) )
            & ( ~ neq(X3,nil)
              | singletonP(X2) )
            & segmentP(X3,X2)
            & sK0 = X2
            & sK1 = X3
            & ssList(X3) )
        & ssList(X2) )
   => ( ? [X3] :
          ( ( ~ equalelemsP(sK0)
            | ~ segmentP(sK1,sK0) )
          & ( ~ neq(X3,nil)
            | singletonP(sK2) )
          & segmentP(X3,sK2)
          & sK0 = sK2
          & sK1 = X3
          & ssList(X3) )
      & ssList(sK2) ) ),
    introduced(choice_axiom,[]) ).

fof(f137,plain,
    ( ? [X3] :
        ( ( ~ equalelemsP(sK0)
          | ~ segmentP(sK1,sK0) )
        & ( ~ neq(X3,nil)
          | singletonP(sK2) )
        & segmentP(X3,sK2)
        & sK0 = sK2
        & sK1 = X3
        & ssList(X3) )
   => ( ( ~ equalelemsP(sK0)
        | ~ segmentP(sK1,sK0) )
      & ( ~ neq(sK3,nil)
        | singletonP(sK2) )
      & segmentP(sK3,sK2)
      & sK0 = sK2
      & sK1 = sK3
      & ssList(sK3) ) ),
    introduced(choice_axiom,[]) ).

fof(f99,plain,
    ? [X0] :
      ( ? [X1] :
          ( ? [X2] :
              ( ? [X3] :
                  ( ( ~ equalelemsP(X0)
                    | ~ segmentP(X1,X0) )
                  & ( ~ neq(X3,nil)
                    | singletonP(X2) )
                  & segmentP(X3,X2)
                  & X0 = X2
                  & X1 = X3
                  & ssList(X3) )
              & ssList(X2) )
          & ssList(X1) )
      & ssList(X0) ),
    inference(flattening,[],[f98]) ).

fof(f98,plain,
    ? [X0] :
      ( ? [X1] :
          ( ? [X2] :
              ( ? [X3] :
                  ( ( ~ equalelemsP(X0)
                    | ~ segmentP(X1,X0) )
                  & ( ~ neq(X3,nil)
                    | singletonP(X2) )
                  & segmentP(X3,X2)
                  & X0 = X2
                  & X1 = X3
                  & ssList(X3) )
              & ssList(X2) )
          & ssList(X1) )
      & ssList(X0) ),
    inference(ennf_transformation,[],[f97]) ).

fof(f97,negated_conjecture,
    ~ ! [X0] :
        ( ssList(X0)
       => ! [X1] :
            ( ssList(X1)
           => ! [X2] :
                ( ssList(X2)
               => ! [X3] :
                    ( ssList(X3)
                   => ( ( equalelemsP(X0)
                        & segmentP(X1,X0) )
                      | ( neq(X3,nil)
                        & ~ singletonP(X2) )
                      | ~ segmentP(X3,X2)
                      | X0 != X2
                      | X1 != X3 ) ) ) ) ),
    inference(negated_conjecture,[],[f96]) ).

fof(f96,conjecture,
    ! [X0] :
      ( ssList(X0)
     => ! [X1] :
          ( ssList(X1)
         => ! [X2] :
              ( ssList(X2)
             => ! [X3] :
                  ( ssList(X3)
                 => ( ( equalelemsP(X0)
                      & segmentP(X1,X0) )
                    | ( neq(X3,nil)
                      & ~ singletonP(X2) )
                    | ~ segmentP(X3,X2)
                    | X0 != X2
                    | X1 != X3 ) ) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',co1) ).

fof(f301,plain,
    ( ~ ssList(sK2)
    | spl15_2
    | ~ spl15_3 ),
    inference(subsumption_resolution,[],[f300,f252]) ).

fof(f252,plain,
    ( singletonP(sK2)
    | ~ spl15_3 ),
    inference(avatar_component_clause,[],[f250]) ).

fof(f250,plain,
    ( spl15_3
  <=> singletonP(sK2) ),
    introduced(avatar_definition,[new_symbols(naming,[spl15_3])]) ).

fof(f300,plain,
    ( ~ singletonP(sK2)
    | ~ ssList(sK2)
    | spl15_2
    | ~ spl15_3 ),
    inference(resolution,[],[f296,f181]) ).

fof(f181,plain,
    ! [X0] :
      ( ssItem(sK4(X0))
      | ~ singletonP(X0)
      | ~ ssList(X0) ),
    inference(cnf_transformation,[],[f144]) ).

fof(f144,plain,
    ! [X0] :
      ( ( ( singletonP(X0)
          | ! [X1] :
              ( cons(X1,nil) != X0
              | ~ ssItem(X1) ) )
        & ( ( cons(sK4(X0),nil) = X0
            & ssItem(sK4(X0)) )
          | ~ singletonP(X0) ) )
      | ~ ssList(X0) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK4])],[f142,f143]) ).

fof(f143,plain,
    ! [X0] :
      ( ? [X2] :
          ( cons(X2,nil) = X0
          & ssItem(X2) )
     => ( cons(sK4(X0),nil) = X0
        & ssItem(sK4(X0)) ) ),
    introduced(choice_axiom,[]) ).

fof(f142,plain,
    ! [X0] :
      ( ( ( singletonP(X0)
          | ! [X1] :
              ( cons(X1,nil) != X0
              | ~ ssItem(X1) ) )
        & ( ? [X2] :
              ( cons(X2,nil) = X0
              & ssItem(X2) )
          | ~ singletonP(X0) ) )
      | ~ ssList(X0) ),
    inference(rectify,[],[f141]) ).

fof(f141,plain,
    ! [X0] :
      ( ( ( singletonP(X0)
          | ! [X1] :
              ( cons(X1,nil) != X0
              | ~ ssItem(X1) ) )
        & ( ? [X1] :
              ( cons(X1,nil) = X0
              & ssItem(X1) )
          | ~ singletonP(X0) ) )
      | ~ ssList(X0) ),
    inference(nnf_transformation,[],[f102]) ).

fof(f102,plain,
    ! [X0] :
      ( ( singletonP(X0)
      <=> ? [X1] :
            ( cons(X1,nil) = X0
            & ssItem(X1) ) )
      | ~ ssList(X0) ),
    inference(ennf_transformation,[],[f4]) ).

fof(f4,axiom,
    ! [X0] :
      ( ssList(X0)
     => ( singletonP(X0)
      <=> ? [X1] :
            ( cons(X1,nil) = X0
            & ssItem(X1) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',ax4) ).

fof(f296,plain,
    ( ~ ssItem(sK4(sK2))
    | spl15_2
    | ~ spl15_3 ),
    inference(subsumption_resolution,[],[f292,f247]) ).

fof(f247,plain,
    ( ~ equalelemsP(sK2)
    | spl15_2 ),
    inference(avatar_component_clause,[],[f245]) ).

fof(f245,plain,
    ( spl15_2
  <=> equalelemsP(sK2) ),
    introduced(avatar_definition,[new_symbols(naming,[spl15_2])]) ).

fof(f292,plain,
    ( equalelemsP(sK2)
    | ~ ssItem(sK4(sK2))
    | ~ spl15_3 ),
    inference(superposition,[],[f196,f291]) ).

fof(f291,plain,
    ( sK2 = cons(sK4(sK2),nil)
    | ~ spl15_3 ),
    inference(subsumption_resolution,[],[f290,f168]) ).

fof(f290,plain,
    ( sK2 = cons(sK4(sK2),nil)
    | ~ ssList(sK2)
    | ~ spl15_3 ),
    inference(resolution,[],[f182,f252]) ).

fof(f182,plain,
    ! [X0] :
      ( ~ singletonP(X0)
      | cons(sK4(X0),nil) = X0
      | ~ ssList(X0) ),
    inference(cnf_transformation,[],[f144]) ).

fof(f196,plain,
    ! [X0] :
      ( equalelemsP(cons(X0,nil))
      | ~ ssItem(X0) ),
    inference(cnf_transformation,[],[f113]) ).

fof(f113,plain,
    ! [X0] :
      ( equalelemsP(cons(X0,nil))
      | ~ ssItem(X0) ),
    inference(ennf_transformation,[],[f73]) ).

fof(f73,axiom,
    ! [X0] :
      ( ssItem(X0)
     => equalelemsP(cons(X0,nil)) ),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',ax73) ).

fof(f285,plain,
    ( ~ spl15_1
    | spl15_2
    | spl15_4 ),
    inference(avatar_contradiction_clause,[],[f284]) ).

fof(f284,plain,
    ( $false
    | ~ spl15_1
    | spl15_2
    | spl15_4 ),
    inference(subsumption_resolution,[],[f282,f195]) ).

fof(f195,plain,
    equalelemsP(nil),
    inference(cnf_transformation,[],[f74]) ).

fof(f74,axiom,
    equalelemsP(nil),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',ax74) ).

fof(f282,plain,
    ( ~ equalelemsP(nil)
    | ~ spl15_1
    | spl15_2
    | spl15_4 ),
    inference(backward_demodulation,[],[f247,f280]) ).

fof(f280,plain,
    ( nil = sK2
    | ~ spl15_1
    | spl15_4 ),
    inference(subsumption_resolution,[],[f279,f168]) ).

fof(f279,plain,
    ( nil = sK2
    | ~ ssList(sK2)
    | ~ spl15_1
    | spl15_4 ),
    inference(resolution,[],[f276,f184]) ).

fof(f184,plain,
    ! [X0] :
      ( ~ segmentP(nil,X0)
      | nil = X0
      | ~ ssList(X0) ),
    inference(cnf_transformation,[],[f145]) ).

fof(f145,plain,
    ! [X0] :
      ( ( ( segmentP(nil,X0)
          | nil != X0 )
        & ( nil = X0
          | ~ segmentP(nil,X0) ) )
      | ~ ssList(X0) ),
    inference(nnf_transformation,[],[f103]) ).

fof(f103,plain,
    ! [X0] :
      ( ( segmentP(nil,X0)
      <=> nil = X0 )
      | ~ ssList(X0) ),
    inference(ennf_transformation,[],[f58]) ).

fof(f58,axiom,
    ! [X0] :
      ( ssList(X0)
     => ( segmentP(nil,X0)
      <=> nil = X0 ) ),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',ax58) ).

fof(f276,plain,
    ( segmentP(nil,sK2)
    | ~ spl15_1
    | spl15_4 ),
    inference(backward_demodulation,[],[f242,f275]) ).

fof(f275,plain,
    ( nil = sK3
    | spl15_4 ),
    inference(subsumption_resolution,[],[f274,f169]) ).

fof(f169,plain,
    ssList(sK3),
    inference(cnf_transformation,[],[f138]) ).

fof(f274,plain,
    ( nil = sK3
    | ~ ssList(sK3)
    | spl15_4 ),
    inference(subsumption_resolution,[],[f269,f179]) ).

fof(f179,plain,
    ssList(nil),
    inference(cnf_transformation,[],[f17]) ).

fof(f17,axiom,
    ssList(nil),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',ax17) ).

fof(f269,plain,
    ( nil = sK3
    | ~ ssList(nil)
    | ~ ssList(sK3)
    | spl15_4 ),
    inference(resolution,[],[f176,f256]) ).

fof(f256,plain,
    ( ~ neq(sK3,nil)
    | spl15_4 ),
    inference(avatar_component_clause,[],[f254]) ).

fof(f254,plain,
    ( spl15_4
  <=> neq(sK3,nil) ),
    introduced(avatar_definition,[new_symbols(naming,[spl15_4])]) ).

fof(f176,plain,
    ! [X0,X1] :
      ( neq(X0,X1)
      | X0 = X1
      | ~ ssList(X1)
      | ~ ssList(X0) ),
    inference(cnf_transformation,[],[f139]) ).

fof(f139,plain,
    ! [X0] :
      ( ! [X1] :
          ( ( ( neq(X0,X1)
              | X0 = X1 )
            & ( X0 != X1
              | ~ neq(X0,X1) ) )
          | ~ ssList(X1) )
      | ~ ssList(X0) ),
    inference(nnf_transformation,[],[f100]) ).

fof(f100,plain,
    ! [X0] :
      ( ! [X1] :
          ( ( neq(X0,X1)
          <=> X0 != X1 )
          | ~ ssList(X1) )
      | ~ ssList(X0) ),
    inference(ennf_transformation,[],[f15]) ).

fof(f15,axiom,
    ! [X0] :
      ( ssList(X0)
     => ! [X1] :
          ( ssList(X1)
         => ( neq(X0,X1)
          <=> X0 != X1 ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261',ax15) ).

fof(f242,plain,
    ( segmentP(sK3,sK2)
    | ~ spl15_1 ),
    inference(avatar_component_clause,[],[f241]) ).

fof(f241,plain,
    ( spl15_1
  <=> segmentP(sK3,sK2) ),
    introduced(avatar_definition,[new_symbols(naming,[spl15_1])]) ).

fof(f258,plain,
    spl15_1,
    inference(avatar_split_clause,[],[f172,f241]) ).

fof(f172,plain,
    segmentP(sK3,sK2),
    inference(cnf_transformation,[],[f138]) ).

fof(f257,plain,
    ( spl15_3
    | ~ spl15_4 ),
    inference(avatar_split_clause,[],[f173,f254,f250]) ).

fof(f173,plain,
    ( ~ neq(sK3,nil)
    | singletonP(sK2) ),
    inference(cnf_transformation,[],[f138]) ).

fof(f248,plain,
    ( ~ spl15_1
    | ~ spl15_2 ),
    inference(avatar_split_clause,[],[f226,f245,f241]) ).

fof(f226,plain,
    ( ~ equalelemsP(sK2)
    | ~ segmentP(sK3,sK2) ),
    inference(definition_unfolding,[],[f174,f171,f170,f171]) ).

fof(f170,plain,
    sK1 = sK3,
    inference(cnf_transformation,[],[f138]) ).

fof(f171,plain,
    sK0 = sK2,
    inference(cnf_transformation,[],[f138]) ).

fof(f174,plain,
    ( ~ equalelemsP(sK0)
    | ~ segmentP(sK1,sK0) ),
    inference(cnf_transformation,[],[f138]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.10/0.13  % Problem    : SWC332+1 : TPTP v8.1.2. Released v2.4.0.
% 0.10/0.15  % Command    : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule file --schedule_file /export/starexec/sandbox2/solver/bin/quickGreedyProduceRating_steal_pow3.txt --cores 8 -m 12000 -t %d %s
% 0.14/0.35  % Computer : n012.cluster.edu
% 0.14/0.35  % Model    : x86_64 x86_64
% 0.14/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35  % Memory   : 8042.1875MB
% 0.14/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35  % CPULimit   : 300
% 0.14/0.35  % WCLimit    : 300
% 0.14/0.35  % DateTime   : Fri May  3 20:31:23 EDT 2024
% 0.14/0.35  % CPUTime    : 
% 0.14/0.35  This is a FOF_THM_RFO_SEQ problem
% 0.14/0.35  Running vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule file --schedule_file /export/starexec/sandbox2/solver/bin/quickGreedyProduceRating_steal_pow3.txt --cores 8 -m 12000 -t 300 /export/starexec/sandbox2/tmp/tmp.zU3xANQYgq/Vampire---4.8_32261
% 0.64/0.81  % (32456)dis-1011_2:1_sil=2000:lsd=20:nwc=5.0:flr=on:mep=off:st=3.0:i=34:sd=1:ep=RS:ss=axioms_0 on Vampire---4 for (2995ds/34Mi)
% 0.64/0.81  % (32458)lrs+1011_1:1_sil=8000:sp=occurrence:nwc=10.0:i=78:ss=axioms:sgt=8_0 on Vampire---4 for (2995ds/78Mi)
% 0.64/0.81  % (32457)lrs+1011_461:32768_sil=16000:irw=on:sp=frequency:lsd=20:fd=preordered:nwc=10.0:s2agt=32:alpa=false:cond=fast:s2a=on:i=51:s2at=3.0:awrs=decay:awrsf=691:bd=off:nm=20:fsr=off:amm=sco:uhcvi=on:rawr=on_0 on Vampire---4 for (2995ds/51Mi)
% 0.64/0.81  % (32459)ott+1011_1:1_sil=2000:urr=on:i=33:sd=1:kws=inv_frequency:ss=axioms:sup=off_0 on Vampire---4 for (2995ds/33Mi)
% 0.64/0.81  % (32460)lrs+2_1:1_sil=16000:fde=none:sos=all:nwc=5.0:i=34:ep=RS:s2pl=on:lma=on:afp=100000_0 on Vampire---4 for (2995ds/34Mi)
% 0.64/0.81  % (32461)lrs+1002_1:16_to=lpo:sil=32000:sp=unary_frequency:sos=on:i=45:bd=off:ss=axioms_0 on Vampire---4 for (2995ds/45Mi)
% 0.64/0.81  % (32462)lrs+21_1:5_sil=2000:sos=on:urr=on:newcnf=on:slsq=on:i=83:slsql=off:bd=off:nm=2:ss=axioms:st=1.5:sp=const_min:gsp=on:rawr=on_0 on Vampire---4 for (2995ds/83Mi)
% 0.64/0.81  % (32463)lrs-21_1:1_to=lpo:sil=2000:sp=frequency:sos=on:lma=on:i=56:sd=2:ss=axioms:ep=R_0 on Vampire---4 for (2995ds/56Mi)
% 0.64/0.82  % (32463)Refutation not found, incomplete strategy% (32463)------------------------------
% 0.64/0.82  % (32463)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.64/0.82  % (32463)Termination reason: Refutation not found, incomplete strategy
% 0.64/0.82  
% 0.64/0.82  % (32463)Memory used [KB]: 1140
% 0.64/0.82  % (32463)Time elapsed: 0.005 s
% 0.64/0.82  % (32463)Instructions burned: 5 (million)
% 0.64/0.82  % (32463)------------------------------
% 0.64/0.82  % (32463)------------------------------
% 0.64/0.82  % (32458)First to succeed.
% 0.64/0.82  % (32458)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-32422"
% 0.64/0.82  % (32458)Refutation found. Thanks to Tanya!
% 0.64/0.82  % SZS status Theorem for Vampire---4
% 0.64/0.82  % SZS output start Proof for Vampire---4
% See solution above
% 0.64/0.82  % (32458)------------------------------
% 0.64/0.82  % (32458)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.64/0.82  % (32458)Termination reason: Refutation
% 0.64/0.82  
% 0.64/0.82  % (32458)Memory used [KB]: 1172
% 0.64/0.82  % (32458)Time elapsed: 0.008 s
% 0.64/0.82  % (32458)Instructions burned: 10 (million)
% 0.64/0.82  % (32422)Success in time 0.457 s
% 0.64/0.82  % Vampire---4.8 exiting
%------------------------------------------------------------------------------