TSTP Solution File: GRA004+1 by SInE---0.4

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : SInE---0.4
% Problem  : GRA004+1 : TPTP v5.0.0. Bugfixed v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : Source/sine.py -e eprover -t %d %s

% Computer : art01.cs.miami.edu
% Model    : i686 i686
% CPU      : Intel(R) Pentium(R) 4 CPU 2.80GHz @ 2793MHz
% Memory   : 2018MB
% OS       : Linux 2.6.26.8-57.fc8
% CPULimit : 300s
% DateTime : Sat Dec 25 09:53:16 EST 2010

% Result   : Theorem 239.71s
% Output   : CNFRefutation 239.71s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   22
%            Number of leaves      :    9
% Syntax   : Number of formulae    :   89 (  17 unt;   0 def)
%            Number of atoms       :  419 (  97 equ)
%            Maximal formula atoms :   19 (   4 avg)
%            Number of connectives :  538 ( 208   ~; 198   |; 112   &)
%                                         (   5 <=>;  13  =>;   1  <=;   1 <~>)
%            Maximal formula depth :   15 (   7 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :   12 (  10 usr;   3 prp; 0-3 aty)
%            Number of functors    :   11 (  11 usr;   6 con; 0-5 aty)
%            Number of variables   :  245 (  24 sgn 169   !;  24   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(2,axiom,
    ! [X2,X3] :
      ( sequential(X2,X3)
    <=> ( edge(X2)
        & edge(X3)
        & X2 != X3
        & head_of(X2) = tail_of(X3) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',sequential_defn) ).

fof(4,axiom,
    ! [X4,X5,X6] :
      ( shortest_path(X4,X5,X6)
    <=> ( path(X4,X5,X6)
        & X4 != X5
        & ! [X7] :
            ( path(X4,X5,X7)
           => less_or_equal(length_of(X6),length_of(X7)) ) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',shortest_path_defn) ).

fof(5,axiom,
    ! [X7,X4,X5] :
      ( path(X4,X5,X7)
     => ! [X2,X3] :
          ( precedes(X2,X3,X7)
         => ( on_path(X2,X7)
            & on_path(X3,X7)
            & ( sequential(X2,X3)
            <~> ? [X8] :
                  ( sequential(X2,X8)
                  & precedes(X8,X3,X7) ) ) ) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',precedes_properties) ).

fof(7,axiom,
    ! [X4,X5,X7,X1] :
      ( ( path(X4,X5,X7)
        & on_path(X1,X7) )
     => ( edge(X1)
        & in_path(head_of(X1),X7)
        & in_path(tail_of(X1),X7) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',on_path_properties) ).

fof(8,axiom,
    ! [X4,X5,X2,X3,X7] :
      ( ( shortest_path(X4,X5,X7)
        & precedes(X2,X3,X7) )
     => ( ~ ? [X8] :
              ( tail_of(X8) = tail_of(X2)
              & head_of(X8) = head_of(X3) )
        & ~ precedes(X3,X2,X7) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',shortest_path_properties) ).

fof(9,axiom,
    ! [X7,X4,X5] :
      ( path(X4,X5,X7)
     => ! [X2,X3] :
          ( precedes(X2,X3,X7)
         <= ( on_path(X2,X7)
            & on_path(X3,X7)
            & ( sequential(X2,X3)
              | ? [X8] :
                  ( sequential(X2,X8)
                  & precedes(X8,X3,X7) ) ) ) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',precedes_defn) ).

fof(11,conjecture,
    ! [X4,X5,X2,X3,X7] :
      ( ( shortest_path(X4,X5,X7)
        & precedes(X2,X3,X7) )
     => ( ~ ? [X8] :
              ( tail_of(X8) = tail_of(X2)
              & head_of(X8) = head_of(X3) )
        & head_of(X3) != tail_of(X2)
        & head_of(X3) != head_of(X2) ) ),
    file('/tmp/tmpbcCnJD/sel_GRA004+1.p_5',shortest_path_properties_lemma) ).

fof(16,negated_conjecture,
    ~ ! [X4,X5,X2,X3,X7] :
        ( ( shortest_path(X4,X5,X7)
          & precedes(X2,X3,X7) )
       => ( ~ ? [X8] :
                ( tail_of(X8) = tail_of(X2)
                & head_of(X8) = head_of(X3) )
          & head_of(X3) != tail_of(X2)
          & head_of(X3) != head_of(X2) ) ),
    inference(assume_negation,[status(cth)],[11]) ).

fof(17,plain,
    ! [X7,X4,X5] :
      ( path(X4,X5,X7)
     => ! [X2,X3] :
          ( precedes(X2,X3,X7)
         => ( on_path(X2,X7)
            & on_path(X3,X7)
            & ~ ( sequential(X2,X3)
              <=> ? [X8] :
                    ( sequential(X2,X8)
                    & precedes(X8,X3,X7) ) ) ) ) ),
    inference(fof_simplification,[status(thm)],[5,theory(equality)]) ).

fof(18,plain,
    ! [X4,X5,X2,X3,X7] :
      ( ( shortest_path(X4,X5,X7)
        & precedes(X2,X3,X7) )
     => ( ~ ? [X8] :
              ( tail_of(X8) = tail_of(X2)
              & head_of(X8) = head_of(X3) )
        & ~ precedes(X3,X2,X7) ) ),
    inference(fof_simplification,[status(thm)],[8,theory(equality)]) ).

fof(19,plain,
    ! [X7,X4,X5] :
      ( path(X4,X5,X7)
     => ! [X2,X3] :
          ( ( on_path(X2,X7)
            & on_path(X3,X7)
            & ( sequential(X2,X3)
              | ? [X8] :
                  ( sequential(X2,X8)
                  & precedes(X8,X3,X7) ) ) )
         => precedes(X2,X3,X7) ) ),
    inference(fof_simplification,[status(thm)],[9,theory(equality)]) ).

fof(25,plain,
    ! [X2,X3] :
      ( ( ~ sequential(X2,X3)
        | ( edge(X2)
          & edge(X3)
          & X2 != X3
          & head_of(X2) = tail_of(X3) ) )
      & ( ~ edge(X2)
        | ~ edge(X3)
        | X2 = X3
        | head_of(X2) != tail_of(X3)
        | sequential(X2,X3) ) ),
    inference(fof_nnf,[status(thm)],[2]) ).

fof(26,plain,
    ! [X4,X5] :
      ( ( ~ sequential(X4,X5)
        | ( edge(X4)
          & edge(X5)
          & X4 != X5
          & head_of(X4) = tail_of(X5) ) )
      & ( ~ edge(X4)
        | ~ edge(X5)
        | X4 = X5
        | head_of(X4) != tail_of(X5)
        | sequential(X4,X5) ) ),
    inference(variable_rename,[status(thm)],[25]) ).

fof(27,plain,
    ! [X4,X5] :
      ( ( edge(X4)
        | ~ sequential(X4,X5) )
      & ( edge(X5)
        | ~ sequential(X4,X5) )
      & ( X4 != X5
        | ~ sequential(X4,X5) )
      & ( head_of(X4) = tail_of(X5)
        | ~ sequential(X4,X5) )
      & ( ~ edge(X4)
        | ~ edge(X5)
        | X4 = X5
        | head_of(X4) != tail_of(X5)
        | sequential(X4,X5) ) ),
    inference(distribute,[status(thm)],[26]) ).

cnf(28,plain,
    ( sequential(X1,X2)
    | X1 = X2
    | head_of(X1) != tail_of(X2)
    | ~ edge(X2)
    | ~ edge(X1) ),
    inference(split_conjunct,[status(thm)],[27]) ).

fof(36,plain,
    ! [X4,X5,X6] :
      ( ( ~ shortest_path(X4,X5,X6)
        | ( path(X4,X5,X6)
          & X4 != X5
          & ! [X7] :
              ( ~ path(X4,X5,X7)
              | less_or_equal(length_of(X6),length_of(X7)) ) ) )
      & ( ~ path(X4,X5,X6)
        | X4 = X5
        | ? [X7] :
            ( path(X4,X5,X7)
            & ~ less_or_equal(length_of(X6),length_of(X7)) )
        | shortest_path(X4,X5,X6) ) ),
    inference(fof_nnf,[status(thm)],[4]) ).

fof(37,plain,
    ! [X8,X9,X10] :
      ( ( ~ shortest_path(X8,X9,X10)
        | ( path(X8,X9,X10)
          & X8 != X9
          & ! [X11] :
              ( ~ path(X8,X9,X11)
              | less_or_equal(length_of(X10),length_of(X11)) ) ) )
      & ( ~ path(X8,X9,X10)
        | X8 = X9
        | ? [X12] :
            ( path(X8,X9,X12)
            & ~ less_or_equal(length_of(X10),length_of(X12)) )
        | shortest_path(X8,X9,X10) ) ),
    inference(variable_rename,[status(thm)],[36]) ).

fof(38,plain,
    ! [X8,X9,X10] :
      ( ( ~ shortest_path(X8,X9,X10)
        | ( path(X8,X9,X10)
          & X8 != X9
          & ! [X11] :
              ( ~ path(X8,X9,X11)
              | less_or_equal(length_of(X10),length_of(X11)) ) ) )
      & ( ~ path(X8,X9,X10)
        | X8 = X9
        | ( path(X8,X9,esk1_3(X8,X9,X10))
          & ~ less_or_equal(length_of(X10),length_of(esk1_3(X8,X9,X10))) )
        | shortest_path(X8,X9,X10) ) ),
    inference(skolemize,[status(esa)],[37]) ).

fof(39,plain,
    ! [X8,X9,X10,X11] :
      ( ( ( ( ~ path(X8,X9,X11)
            | less_or_equal(length_of(X10),length_of(X11)) )
          & path(X8,X9,X10)
          & X8 != X9 )
        | ~ shortest_path(X8,X9,X10) )
      & ( ~ path(X8,X9,X10)
        | X8 = X9
        | ( path(X8,X9,esk1_3(X8,X9,X10))
          & ~ less_or_equal(length_of(X10),length_of(esk1_3(X8,X9,X10))) )
        | shortest_path(X8,X9,X10) ) ),
    inference(shift_quantors,[status(thm)],[38]) ).

fof(40,plain,
    ! [X8,X9,X10,X11] :
      ( ( ~ path(X8,X9,X11)
        | less_or_equal(length_of(X10),length_of(X11))
        | ~ shortest_path(X8,X9,X10) )
      & ( path(X8,X9,X10)
        | ~ shortest_path(X8,X9,X10) )
      & ( X8 != X9
        | ~ shortest_path(X8,X9,X10) )
      & ( path(X8,X9,esk1_3(X8,X9,X10))
        | ~ path(X8,X9,X10)
        | X8 = X9
        | shortest_path(X8,X9,X10) )
      & ( ~ less_or_equal(length_of(X10),length_of(esk1_3(X8,X9,X10)))
        | ~ path(X8,X9,X10)
        | X8 = X9
        | shortest_path(X8,X9,X10) ) ),
    inference(distribute,[status(thm)],[39]) ).

cnf(44,plain,
    ( path(X1,X2,X3)
    | ~ shortest_path(X1,X2,X3) ),
    inference(split_conjunct,[status(thm)],[40]) ).

fof(46,plain,
    ! [X7,X4,X5] :
      ( ~ path(X4,X5,X7)
      | ! [X2,X3] :
          ( ~ precedes(X2,X3,X7)
          | ( on_path(X2,X7)
            & on_path(X3,X7)
            & ( ~ sequential(X2,X3)
              | ! [X8] :
                  ( ~ sequential(X2,X8)
                  | ~ precedes(X8,X3,X7) ) )
            & ( sequential(X2,X3)
              | ? [X8] :
                  ( sequential(X2,X8)
                  & precedes(X8,X3,X7) ) ) ) ) ),
    inference(fof_nnf,[status(thm)],[17]) ).

fof(47,plain,
    ! [X9,X10,X11] :
      ( ~ path(X10,X11,X9)
      | ! [X12,X13] :
          ( ~ precedes(X12,X13,X9)
          | ( on_path(X12,X9)
            & on_path(X13,X9)
            & ( ~ sequential(X12,X13)
              | ! [X14] :
                  ( ~ sequential(X12,X14)
                  | ~ precedes(X14,X13,X9) ) )
            & ( sequential(X12,X13)
              | ? [X15] :
                  ( sequential(X12,X15)
                  & precedes(X15,X13,X9) ) ) ) ) ),
    inference(variable_rename,[status(thm)],[46]) ).

fof(48,plain,
    ! [X9,X10,X11] :
      ( ~ path(X10,X11,X9)
      | ! [X12,X13] :
          ( ~ precedes(X12,X13,X9)
          | ( on_path(X12,X9)
            & on_path(X13,X9)
            & ( ~ sequential(X12,X13)
              | ! [X14] :
                  ( ~ sequential(X12,X14)
                  | ~ precedes(X14,X13,X9) ) )
            & ( sequential(X12,X13)
              | ( sequential(X12,esk2_5(X9,X10,X11,X12,X13))
                & precedes(esk2_5(X9,X10,X11,X12,X13),X13,X9) ) ) ) ) ),
    inference(skolemize,[status(esa)],[47]) ).

fof(49,plain,
    ! [X9,X10,X11,X12,X13,X14] :
      ( ( ( ~ sequential(X12,X14)
          | ~ precedes(X14,X13,X9)
          | ~ sequential(X12,X13) )
        & ( sequential(X12,X13)
          | ( sequential(X12,esk2_5(X9,X10,X11,X12,X13))
            & precedes(esk2_5(X9,X10,X11,X12,X13),X13,X9) ) )
        & on_path(X12,X9)
        & on_path(X13,X9) )
      | ~ precedes(X12,X13,X9)
      | ~ path(X10,X11,X9) ),
    inference(shift_quantors,[status(thm)],[48]) ).

fof(50,plain,
    ! [X9,X10,X11,X12,X13,X14] :
      ( ( ~ sequential(X12,X14)
        | ~ precedes(X14,X13,X9)
        | ~ sequential(X12,X13)
        | ~ precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) )
      & ( sequential(X12,esk2_5(X9,X10,X11,X12,X13))
        | sequential(X12,X13)
        | ~ precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) )
      & ( precedes(esk2_5(X9,X10,X11,X12,X13),X13,X9)
        | sequential(X12,X13)
        | ~ precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) )
      & ( on_path(X12,X9)
        | ~ precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) )
      & ( on_path(X13,X9)
        | ~ precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) ) ),
    inference(distribute,[status(thm)],[49]) ).

cnf(51,plain,
    ( on_path(X5,X3)
    | ~ path(X1,X2,X3)
    | ~ precedes(X4,X5,X3) ),
    inference(split_conjunct,[status(thm)],[50]) ).

cnf(52,plain,
    ( on_path(X4,X3)
    | ~ path(X1,X2,X3)
    | ~ precedes(X4,X5,X3) ),
    inference(split_conjunct,[status(thm)],[50]) ).

fof(63,plain,
    ! [X4,X5,X7,X1] :
      ( ~ path(X4,X5,X7)
      | ~ on_path(X1,X7)
      | ( edge(X1)
        & in_path(head_of(X1),X7)
        & in_path(tail_of(X1),X7) ) ),
    inference(fof_nnf,[status(thm)],[7]) ).

fof(64,plain,
    ! [X8,X9,X10,X11] :
      ( ~ path(X8,X9,X10)
      | ~ on_path(X11,X10)
      | ( edge(X11)
        & in_path(head_of(X11),X10)
        & in_path(tail_of(X11),X10) ) ),
    inference(variable_rename,[status(thm)],[63]) ).

fof(65,plain,
    ! [X8,X9,X10,X11] :
      ( ( edge(X11)
        | ~ path(X8,X9,X10)
        | ~ on_path(X11,X10) )
      & ( in_path(head_of(X11),X10)
        | ~ path(X8,X9,X10)
        | ~ on_path(X11,X10) )
      & ( in_path(tail_of(X11),X10)
        | ~ path(X8,X9,X10)
        | ~ on_path(X11,X10) ) ),
    inference(distribute,[status(thm)],[64]) ).

cnf(68,plain,
    ( edge(X1)
    | ~ on_path(X1,X2)
    | ~ path(X3,X4,X2) ),
    inference(split_conjunct,[status(thm)],[65]) ).

fof(69,plain,
    ! [X4,X5,X2,X3,X7] :
      ( ~ shortest_path(X4,X5,X7)
      | ~ precedes(X2,X3,X7)
      | ( ! [X8] :
            ( tail_of(X8) != tail_of(X2)
            | head_of(X8) != head_of(X3) )
        & ~ precedes(X3,X2,X7) ) ),
    inference(fof_nnf,[status(thm)],[18]) ).

fof(70,plain,
    ! [X9,X10,X11,X12,X13] :
      ( ~ shortest_path(X9,X10,X13)
      | ~ precedes(X11,X12,X13)
      | ( ! [X14] :
            ( tail_of(X14) != tail_of(X11)
            | head_of(X14) != head_of(X12) )
        & ~ precedes(X12,X11,X13) ) ),
    inference(variable_rename,[status(thm)],[69]) ).

fof(71,plain,
    ! [X9,X10,X11,X12,X13,X14] :
      ( ( ( tail_of(X14) != tail_of(X11)
          | head_of(X14) != head_of(X12) )
        & ~ precedes(X12,X11,X13) )
      | ~ shortest_path(X9,X10,X13)
      | ~ precedes(X11,X12,X13) ),
    inference(shift_quantors,[status(thm)],[70]) ).

fof(72,plain,
    ! [X9,X10,X11,X12,X13,X14] :
      ( ( tail_of(X14) != tail_of(X11)
        | head_of(X14) != head_of(X12)
        | ~ shortest_path(X9,X10,X13)
        | ~ precedes(X11,X12,X13) )
      & ( ~ precedes(X12,X11,X13)
        | ~ shortest_path(X9,X10,X13)
        | ~ precedes(X11,X12,X13) ) ),
    inference(distribute,[status(thm)],[71]) ).

cnf(73,plain,
    ( ~ precedes(X1,X2,X3)
    | ~ shortest_path(X4,X5,X3)
    | ~ precedes(X2,X1,X3) ),
    inference(split_conjunct,[status(thm)],[72]) ).

cnf(74,plain,
    ( ~ precedes(X1,X2,X3)
    | ~ shortest_path(X4,X5,X3)
    | head_of(X6) != head_of(X2)
    | tail_of(X6) != tail_of(X1) ),
    inference(split_conjunct,[status(thm)],[72]) ).

fof(75,plain,
    ! [X7,X4,X5] :
      ( ~ path(X4,X5,X7)
      | ! [X2,X3] :
          ( ~ on_path(X2,X7)
          | ~ on_path(X3,X7)
          | ( ~ sequential(X2,X3)
            & ! [X8] :
                ( ~ sequential(X2,X8)
                | ~ precedes(X8,X3,X7) ) )
          | precedes(X2,X3,X7) ) ),
    inference(fof_nnf,[status(thm)],[19]) ).

fof(76,plain,
    ! [X9,X10,X11] :
      ( ~ path(X10,X11,X9)
      | ! [X12,X13] :
          ( ~ on_path(X12,X9)
          | ~ on_path(X13,X9)
          | ( ~ sequential(X12,X13)
            & ! [X14] :
                ( ~ sequential(X12,X14)
                | ~ precedes(X14,X13,X9) ) )
          | precedes(X12,X13,X9) ) ),
    inference(variable_rename,[status(thm)],[75]) ).

fof(77,plain,
    ! [X9,X10,X11,X12,X13,X14] :
      ( ( ( ~ sequential(X12,X14)
          | ~ precedes(X14,X13,X9) )
        & ~ sequential(X12,X13) )
      | ~ on_path(X12,X9)
      | ~ on_path(X13,X9)
      | precedes(X12,X13,X9)
      | ~ path(X10,X11,X9) ),
    inference(shift_quantors,[status(thm)],[76]) ).

fof(78,plain,
    ! [X9,X10,X11,X12,X13,X14] :
      ( ( ~ sequential(X12,X14)
        | ~ precedes(X14,X13,X9)
        | ~ on_path(X12,X9)
        | ~ on_path(X13,X9)
        | precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) )
      & ( ~ sequential(X12,X13)
        | ~ on_path(X12,X9)
        | ~ on_path(X13,X9)
        | precedes(X12,X13,X9)
        | ~ path(X10,X11,X9) ) ),
    inference(distribute,[status(thm)],[77]) ).

cnf(79,plain,
    ( precedes(X4,X5,X3)
    | ~ path(X1,X2,X3)
    | ~ on_path(X5,X3)
    | ~ on_path(X4,X3)
    | ~ sequential(X4,X5) ),
    inference(split_conjunct,[status(thm)],[78]) ).

fof(84,negated_conjecture,
    ? [X4,X5,X2,X3,X7] :
      ( shortest_path(X4,X5,X7)
      & precedes(X2,X3,X7)
      & ( ? [X8] :
            ( tail_of(X8) = tail_of(X2)
            & head_of(X8) = head_of(X3) )
        | head_of(X3) = tail_of(X2)
        | head_of(X3) = head_of(X2) ) ),
    inference(fof_nnf,[status(thm)],[16]) ).

fof(85,negated_conjecture,
    ? [X9,X10,X11,X12,X13] :
      ( shortest_path(X9,X10,X13)
      & precedes(X11,X12,X13)
      & ( ? [X14] :
            ( tail_of(X14) = tail_of(X11)
            & head_of(X14) = head_of(X12) )
        | head_of(X12) = tail_of(X11)
        | head_of(X12) = head_of(X11) ) ),
    inference(variable_rename,[status(thm)],[84]) ).

fof(86,negated_conjecture,
    ( shortest_path(esk4_0,esk5_0,esk8_0)
    & precedes(esk6_0,esk7_0,esk8_0)
    & ( ( tail_of(esk9_0) = tail_of(esk6_0)
        & head_of(esk9_0) = head_of(esk7_0) )
      | head_of(esk7_0) = tail_of(esk6_0)
      | head_of(esk7_0) = head_of(esk6_0) ) ),
    inference(skolemize,[status(esa)],[85]) ).

fof(87,negated_conjecture,
    ( shortest_path(esk4_0,esk5_0,esk8_0)
    & precedes(esk6_0,esk7_0,esk8_0)
    & ( tail_of(esk9_0) = tail_of(esk6_0)
      | head_of(esk7_0) = tail_of(esk6_0)
      | head_of(esk7_0) = head_of(esk6_0) )
    & ( head_of(esk9_0) = head_of(esk7_0)
      | head_of(esk7_0) = tail_of(esk6_0)
      | head_of(esk7_0) = head_of(esk6_0) ) ),
    inference(distribute,[status(thm)],[86]) ).

cnf(88,negated_conjecture,
    ( head_of(esk7_0) = head_of(esk6_0)
    | head_of(esk7_0) = tail_of(esk6_0)
    | head_of(esk9_0) = head_of(esk7_0) ),
    inference(split_conjunct,[status(thm)],[87]) ).

cnf(89,negated_conjecture,
    ( head_of(esk7_0) = head_of(esk6_0)
    | head_of(esk7_0) = tail_of(esk6_0)
    | tail_of(esk9_0) = tail_of(esk6_0) ),
    inference(split_conjunct,[status(thm)],[87]) ).

cnf(90,negated_conjecture,
    precedes(esk6_0,esk7_0,esk8_0),
    inference(split_conjunct,[status(thm)],[87]) ).

cnf(91,negated_conjecture,
    shortest_path(esk4_0,esk5_0,esk8_0),
    inference(split_conjunct,[status(thm)],[87]) ).

cnf(122,negated_conjecture,
    path(esk4_0,esk5_0,esk8_0),
    inference(spm,[status(thm)],[44,91,theory(equality)]) ).

cnf(123,negated_conjecture,
    ( ~ precedes(esk7_0,esk6_0,esk8_0)
    | ~ shortest_path(X1,X2,esk8_0) ),
    inference(spm,[status(thm)],[73,90,theory(equality)]) ).

cnf(124,negated_conjecture,
    ( on_path(esk7_0,esk8_0)
    | ~ path(X1,X2,esk8_0) ),
    inference(spm,[status(thm)],[51,90,theory(equality)]) ).

cnf(125,negated_conjecture,
    ( on_path(esk6_0,esk8_0)
    | ~ path(X1,X2,esk8_0) ),
    inference(spm,[status(thm)],[52,90,theory(equality)]) ).

cnf(126,negated_conjecture,
    ( head_of(esk7_0) != head_of(X1)
    | tail_of(esk6_0) != tail_of(X1)
    | ~ shortest_path(X2,X3,esk8_0) ),
    inference(spm,[status(thm)],[74,90,theory(equality)]) ).

cnf(161,negated_conjecture,
    ~ precedes(esk7_0,esk6_0,esk8_0),
    inference(spm,[status(thm)],[123,91,theory(equality)]) ).

cnf(163,negated_conjecture,
    ( edge(X1)
    | ~ on_path(X1,esk8_0) ),
    inference(spm,[status(thm)],[68,122,theory(equality)]) ).

cnf(169,negated_conjecture,
    ( precedes(X1,X2,esk8_0)
    | ~ on_path(X2,esk8_0)
    | ~ on_path(X1,esk8_0)
    | ~ sequential(X1,X2) ),
    inference(spm,[status(thm)],[79,122,theory(equality)]) ).

fof(173,plain,
    ( ~ epred1_0
  <=> ! [X1] :
        ( tail_of(esk6_0) != tail_of(X1)
        | head_of(esk7_0) != head_of(X1) ) ),
    introduced(definition),
    [split] ).

cnf(174,plain,
    ( epred1_0
    | tail_of(esk6_0) != tail_of(X1)
    | head_of(esk7_0) != head_of(X1) ),
    inference(split_equiv,[status(thm)],[173]) ).

fof(175,plain,
    ( ~ epred2_0
  <=> ! [X3,X2] : ~ shortest_path(X2,X3,esk8_0) ),
    introduced(definition),
    [split] ).

cnf(176,plain,
    ( epred2_0
    | ~ shortest_path(X2,X3,esk8_0) ),
    inference(split_equiv,[status(thm)],[175]) ).

cnf(177,negated_conjecture,
    ( ~ epred2_0
    | ~ epred1_0 ),
    inference(apply_def,[status(esa)],[inference(apply_def,[status(esa)],[126,173,theory(equality)]),175,theory(equality)]),
    [split] ).

cnf(178,negated_conjecture,
    epred2_0,
    inference(spm,[status(thm)],[176,91,theory(equality)]) ).

cnf(180,negated_conjecture,
    ( $false
    | ~ epred1_0 ),
    inference(rw,[status(thm)],[177,178,theory(equality)]) ).

cnf(181,negated_conjecture,
    ~ epred1_0,
    inference(cn,[status(thm)],[180,theory(equality)]) ).

cnf(182,negated_conjecture,
    ( epred1_0
    | head_of(esk7_0) != head_of(esk6_0) ),
    inference(er,[status(thm)],[174,theory(equality)]) ).

cnf(187,negated_conjecture,
    head_of(esk7_0) != head_of(esk6_0),
    inference(sr,[status(thm)],[182,181,theory(equality)]) ).

cnf(188,negated_conjecture,
    ( tail_of(esk6_0) = head_of(esk7_0)
    | head_of(esk9_0) = head_of(esk7_0) ),
    inference(sr,[status(thm)],[88,187,theory(equality)]) ).

cnf(189,negated_conjecture,
    ( tail_of(esk9_0) = tail_of(esk6_0)
    | tail_of(esk6_0) = head_of(esk7_0) ),
    inference(sr,[status(thm)],[89,187,theory(equality)]) ).

cnf(198,negated_conjecture,
    ( epred1_0
    | tail_of(esk6_0) = head_of(esk7_0)
    | head_of(esk7_0) != head_of(esk9_0) ),
    inference(spm,[status(thm)],[174,189,theory(equality)]) ).

cnf(199,negated_conjecture,
    ( tail_of(esk6_0) = head_of(esk7_0)
    | head_of(esk9_0) != head_of(esk7_0) ),
    inference(sr,[status(thm)],[198,181,theory(equality)]) ).

cnf(200,negated_conjecture,
    tail_of(esk6_0) = head_of(esk7_0),
    inference(csr,[status(thm)],[199,188]) ).

cnf(217,negated_conjecture,
    on_path(esk7_0,esk8_0),
    inference(spm,[status(thm)],[124,122,theory(equality)]) ).

cnf(223,negated_conjecture,
    edge(esk7_0),
    inference(spm,[status(thm)],[163,217,theory(equality)]) ).

cnf(225,negated_conjecture,
    ( esk7_0 = X1
    | sequential(esk7_0,X1)
    | tail_of(X1) != head_of(esk7_0)
    | ~ edge(X1) ),
    inference(spm,[status(thm)],[28,223,theory(equality)]) ).

cnf(235,negated_conjecture,
    ( esk7_0 = esk6_0
    | sequential(esk7_0,esk6_0)
    | ~ edge(esk6_0) ),
    inference(spm,[status(thm)],[225,200,theory(equality)]) ).

cnf(237,negated_conjecture,
    on_path(esk6_0,esk8_0),
    inference(spm,[status(thm)],[125,122,theory(equality)]) ).

cnf(242,negated_conjecture,
    edge(esk6_0),
    inference(spm,[status(thm)],[163,237,theory(equality)]) ).

cnf(247,negated_conjecture,
    ( esk7_0 = esk6_0
    | sequential(esk7_0,esk6_0)
    | $false ),
    inference(rw,[status(thm)],[235,242,theory(equality)]) ).

cnf(248,negated_conjecture,
    ( esk7_0 = esk6_0
    | sequential(esk7_0,esk6_0) ),
    inference(cn,[status(thm)],[247,theory(equality)]) ).

cnf(266,negated_conjecture,
    ( precedes(X1,esk6_0,esk8_0)
    | ~ on_path(X1,esk8_0)
    | ~ sequential(X1,esk6_0) ),
    inference(spm,[status(thm)],[169,237,theory(equality)]) ).

cnf(279,negated_conjecture,
    ( precedes(esk7_0,esk6_0,esk8_0)
    | ~ sequential(esk7_0,esk6_0) ),
    inference(spm,[status(thm)],[266,217,theory(equality)]) ).

cnf(284,negated_conjecture,
    ~ sequential(esk7_0,esk6_0),
    inference(sr,[status(thm)],[279,161,theory(equality)]) ).

cnf(285,negated_conjecture,
    esk7_0 = esk6_0,
    inference(sr,[status(thm)],[248,284,theory(equality)]) ).

cnf(296,negated_conjecture,
    $false,
    inference(rw,[status(thm)],[187,285,theory(equality)]) ).

cnf(297,negated_conjecture,
    $false,
    inference(cn,[status(thm)],[296,theory(equality)]) ).

cnf(298,negated_conjecture,
    $false,
    297,
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% % SZS status Started for /home/graph/tptp/TPTP/Problems/GRA/GRA004+1.p
% --creating new selector for [GRA001+0.ax]
% eprover: CPU time limit exceeded, terminating
% eprover: CPU time limit exceeded, terminating
% -running prover on /tmp/tmpbcCnJD/sel_GRA004+1.p_1 with time limit 29
% -prover status ResourceOut
% -running prover on /tmp/tmpbcCnJD/sel_GRA004+1.p_2 with time limit 81
% -prover status ResourceOut
% --creating new selector for [GRA001+0.ax]
% eprover: CPU time limit exceeded, terminating
% -running prover on /tmp/tmpbcCnJD/sel_GRA004+1.p_3 with time limit 74
% -prover status ResourceOut
% --creating new selector for [GRA001+0.ax]
% eprover: CPU time limit exceeded, terminating
% -running prover on /tmp/tmpbcCnJD/sel_GRA004+1.p_4 with time limit 55
% -prover status ResourceOut
% --creating new selector for [GRA001+0.ax]
% -running prover on /tmp/tmpbcCnJD/sel_GRA004+1.p_5 with time limit 54
% -prover status Theorem
% Problem GRA004+1.p solved in phase 4.
% % SZS status Theorem for /home/graph/tptp/TPTP/Problems/GRA/GRA004+1.p
% % SZS status Ended for /home/graph/tptp/TPTP/Problems/GRA/GRA004+1.p
% Solved 1 out of 1.
% # Problem is unsatisfiable (or provable), constructing proof object
% # SZS status Theorem
% # SZS output start CNFRefutation.
% See solution above
% # SZS output end CNFRefutation
% 
%------------------------------------------------------------------------------