TSTP Solution File: SYO629-1 by Bliksem---1.12
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- Process Solution
%------------------------------------------------------------------------------
% File : Bliksem---1.12
% Problem : SYO629-1 : TPTP v8.1.0. Released v7.1.0.
% Transfm : none
% Format : tptp:raw
% Command : bliksem %s
% Computer : n023.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 : 0s
% DateTime : Thu Jul 21 14:28:58 EDT 2022
% Result : Unsatisfiable 0.48s 1.03s
% Output : Refutation 0.48s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.14 % Problem : SYO629-1 : TPTP v8.1.0. Released v7.1.0.
% 0.04/0.15 % Command : bliksem %s
% 0.15/0.36 % Computer : n023.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 % DateTime : Sat Jul 9 08:28:26 EDT 2022
% 0.15/0.36 % CPUTime :
% 0.48/1.03 *** allocated 10000 integers for termspace/termends
% 0.48/1.03 *** allocated 10000 integers for clauses
% 0.48/1.03 *** allocated 10000 integers for justifications
% 0.48/1.03 Bliksem 1.12
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 Automatic Strategy Selection
% 0.48/1.03
% 0.48/1.03 Clauses:
% 0.48/1.03 [
% 0.48/1.03 [ ~( 'E'( f( X ), f( g( X ) ) ) ) ],
% 0.48/1.03 [ iLEQ( X, X ) ],
% 0.48/1.03 [ ~( 'E'( '0', f( X ) ) ), ~( 'E'( '0', f( g( X ) ) ) ), 'E'( f( X ), f(
% 0.48/1.03 g( X ) ) ) ],
% 0.48/1.03 [ 'E'( s( '0' ), f( X ) ), 'LE'( f( X ), s( '0' ) ) ],
% 0.48/1.03 [ ~( 'LE'( f( X ), '0' ) ) ],
% 0.48/1.03 [ ~( 'LE'( f( X ), s( '0' ) ) ), ~( iLEQ( X, Y ) ), 'E'( '0', f( Y ) ),
% 0.48/1.03 'LE'( f( Y ), '0' ) ],
% 0.48/1.03 [ ~( 'E'( s( '0' ), f( X ) ) ), ~( 'E'( s( '0' ), f( g( X ) ) ) ), 'E'(
% 0.48/1.03 f( X ), f( g( X ) ) ) ],
% 0.48/1.03 [ ~( 'LE'( f( g( X ) ), '0' ) ) ],
% 0.48/1.03 [ iLEQ( X, g( X ) ) ],
% 0.48/1.03 [ iLEQ( X, g( X ) ) ],
% 0.48/1.03 [ ~( 'E'( f( X ), f( g( X ) ) ) ) ],
% 0.48/1.03 [ iLEQ( X, X ) ]
% 0.48/1.03 ] .
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 percentage equality = 0.000000, percentage horn = 0.750000
% 0.48/1.03 This a non-horn, non-equality problem
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 Options Used:
% 0.48/1.03
% 0.48/1.03 useres = 1
% 0.48/1.03 useparamod = 0
% 0.48/1.03 useeqrefl = 0
% 0.48/1.03 useeqfact = 0
% 0.48/1.03 usefactor = 1
% 0.48/1.03 usesimpsplitting = 0
% 0.48/1.03 usesimpdemod = 0
% 0.48/1.03 usesimpres = 3
% 0.48/1.03
% 0.48/1.03 resimpinuse = 1000
% 0.48/1.03 resimpclauses = 20000
% 0.48/1.03 substype = standard
% 0.48/1.03 backwardsubs = 1
% 0.48/1.03 selectoldest = 5
% 0.48/1.03
% 0.48/1.03 litorderings [0] = split
% 0.48/1.03 litorderings [1] = liftord
% 0.48/1.03
% 0.48/1.03 termordering = none
% 0.48/1.03
% 0.48/1.03 litapriori = 1
% 0.48/1.03 termapriori = 0
% 0.48/1.03 litaposteriori = 0
% 0.48/1.03 termaposteriori = 0
% 0.48/1.03 demodaposteriori = 0
% 0.48/1.03 ordereqreflfact = 0
% 0.48/1.03
% 0.48/1.03 litselect = none
% 0.48/1.03
% 0.48/1.03 maxweight = 15
% 0.48/1.03 maxdepth = 30000
% 0.48/1.03 maxlength = 115
% 0.48/1.03 maxnrvars = 195
% 0.48/1.03 excuselevel = 1
% 0.48/1.03 increasemaxweight = 1
% 0.48/1.03
% 0.48/1.03 maxselected = 10000000
% 0.48/1.03 maxnrclauses = 10000000
% 0.48/1.03
% 0.48/1.03 showgenerated = 0
% 0.48/1.03 showkept = 0
% 0.48/1.03 showselected = 0
% 0.48/1.03 showdeleted = 0
% 0.48/1.03 showresimp = 1
% 0.48/1.03 showstatus = 2000
% 0.48/1.03
% 0.48/1.03 prologoutput = 1
% 0.48/1.03 nrgoals = 5000000
% 0.48/1.03 totalproof = 1
% 0.48/1.03
% 0.48/1.03 Symbols occurring in the translation:
% 0.48/1.03
% 0.48/1.03 {} [0, 0] (w:1, o:2, a:1, s:1, b:0),
% 0.48/1.03 . [1, 2] (w:1, o:23, a:1, s:1, b:0),
% 0.48/1.03 ! [4, 1] (w:0, o:15, a:1, s:1, b:0),
% 0.48/1.03 = [13, 2] (w:1, o:0, a:0, s:1, b:0),
% 0.48/1.03 ==> [14, 2] (w:1, o:0, a:0, s:1, b:0),
% 0.48/1.03 f [40, 1] (w:1, o:20, a:1, s:1, b:0),
% 0.48/1.03 g [41, 1] (w:1, o:21, a:1, s:1, b:0),
% 0.48/1.03 'E' [42, 2] (w:1, o:48, a:1, s:1, b:0),
% 0.48/1.03 iLEQ [43, 2] (w:1, o:49, a:1, s:1, b:0),
% 0.48/1.03 '0' [44, 0] (w:1, o:6, a:1, s:1, b:0),
% 0.48/1.03 s [45, 1] (w:1, o:22, a:1, s:1, b:0),
% 0.48/1.03 'LE' [47, 2] (w:1, o:50, a:1, s:1, b:0).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 Starting Search:
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 Bliksems!, er is een bewijs:
% 0.48/1.03 % SZS status Unsatisfiable
% 0.48/1.03 % SZS output start Refutation
% 0.48/1.03
% 0.48/1.03 clause( 0, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 1, [ iLEQ( X, X ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 2, [ ~( 'E'( '0', f( g( X ) ) ) ), ~( 'E'( '0', f( X ) ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 3, [ 'E'( s( '0' ), f( X ) ), 'LE'( f( X ), s( '0' ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 4, [ ~( 'LE'( f( X ), '0' ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 5, [ ~( iLEQ( X, Y ) ), 'E'( '0', f( Y ) ), ~( 'LE'( f( X ), s( '0'
% 0.48/1.03 ) ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 6, [ ~( 'E'( s( '0' ), f( g( X ) ) ) ), ~( 'E'( s( '0' ), f( X ) )
% 0.48/1.03 ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 7, [ iLEQ( X, g( X ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 8, [ 'E'( '0', f( Y ) ), 'E'( s( '0' ), f( X ) ), ~( iLEQ( X, Y ) )
% 0.48/1.03 ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 9, [ 'E'( s( '0' ), f( X ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 10, [ 'E'( '0', f( X ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 11, [ 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.03 .
% 0.48/1.03 clause( 14, [] )
% 0.48/1.03 .
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 % SZS output end Refutation
% 0.48/1.03 found a proof!
% 0.48/1.03
% 0.48/1.03 % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 0.48/1.03
% 0.48/1.03 initialclauses(
% 0.48/1.03 [ clause( 16, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.03 , clause( 17, [ iLEQ( X, X ) ] )
% 0.48/1.03 , clause( 18, [ ~( 'E'( '0', f( X ) ) ), ~( 'E'( '0', f( g( X ) ) ) ), 'E'(
% 0.48/1.03 f( X ), f( g( X ) ) ) ] )
% 0.48/1.03 , clause( 19, [ 'E'( s( '0' ), f( X ) ), 'LE'( f( X ), s( '0' ) ) ] )
% 0.48/1.03 , clause( 20, [ ~( 'LE'( f( X ), '0' ) ) ] )
% 0.48/1.03 , clause( 21, [ ~( 'LE'( f( X ), s( '0' ) ) ), ~( iLEQ( X, Y ) ), 'E'( '0'
% 0.48/1.03 , f( Y ) ), 'LE'( f( Y ), '0' ) ] )
% 0.48/1.03 , clause( 22, [ ~( 'E'( s( '0' ), f( X ) ) ), ~( 'E'( s( '0' ), f( g( X ) )
% 0.48/1.03 ) ), 'E'( f( X ), f( g( X ) ) ) ] )
% 0.48/1.03 , clause( 23, [ ~( 'LE'( f( g( X ) ), '0' ) ) ] )
% 0.48/1.03 , clause( 24, [ iLEQ( X, g( X ) ) ] )
% 0.48/1.03 , clause( 25, [ iLEQ( X, g( X ) ) ] )
% 0.48/1.03 , clause( 26, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.03 , clause( 27, [ iLEQ( X, X ) ] )
% 0.48/1.03 ] ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 subsumption(
% 0.48/1.03 clause( 0, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.03 , clause( 16, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.03 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 subsumption(
% 0.48/1.03 clause( 1, [ iLEQ( X, X ) ] )
% 0.48/1.03 , clause( 17, [ iLEQ( X, X ) ] )
% 0.48/1.03 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 resolution(
% 0.48/1.03 clause( 28, [ ~( 'E'( '0', f( X ) ) ), ~( 'E'( '0', f( g( X ) ) ) ) ] )
% 0.48/1.03 , clause( 0, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.03 , 0, clause( 18, [ ~( 'E'( '0', f( X ) ) ), ~( 'E'( '0', f( g( X ) ) ) ),
% 0.48/1.03 'E'( f( X ), f( g( X ) ) ) ] )
% 0.48/1.03 , 2, substitution( 0, [ :=( X, X )] ), substitution( 1, [ :=( X, X )] )
% 0.48/1.03 ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 subsumption(
% 0.48/1.03 clause( 2, [ ~( 'E'( '0', f( g( X ) ) ) ), ~( 'E'( '0', f( X ) ) ) ] )
% 0.48/1.03 , clause( 28, [ ~( 'E'( '0', f( X ) ) ), ~( 'E'( '0', f( g( X ) ) ) ) ] )
% 0.48/1.03 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1,
% 0.48/1.03 0 )] ) ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 subsumption(
% 0.48/1.03 clause( 3, [ 'E'( s( '0' ), f( X ) ), 'LE'( f( X ), s( '0' ) ) ] )
% 0.48/1.03 , clause( 19, [ 'E'( s( '0' ), f( X ) ), 'LE'( f( X ), s( '0' ) ) ] )
% 0.48/1.03 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 ), ==>( 1,
% 0.48/1.03 1 )] ) ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 subsumption(
% 0.48/1.03 clause( 4, [ ~( 'LE'( f( X ), '0' ) ) ] )
% 0.48/1.03 , clause( 20, [ ~( 'LE'( f( X ), '0' ) ) ] )
% 0.48/1.03 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 resolution(
% 0.48/1.03 clause( 29, [ ~( 'LE'( f( Y ), s( '0' ) ) ), ~( iLEQ( Y, X ) ), 'E'( '0', f(
% 0.48/1.03 X ) ) ] )
% 0.48/1.03 , clause( 4, [ ~( 'LE'( f( X ), '0' ) ) ] )
% 0.48/1.03 , 0, clause( 21, [ ~( 'LE'( f( X ), s( '0' ) ) ), ~( iLEQ( X, Y ) ), 'E'(
% 0.48/1.03 '0', f( Y ) ), 'LE'( f( Y ), '0' ) ] )
% 0.48/1.03 , 3, substitution( 0, [ :=( X, X )] ), substitution( 1, [ :=( X, Y ), :=( Y
% 0.48/1.03 , X )] )).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 subsumption(
% 0.48/1.03 clause( 5, [ ~( iLEQ( X, Y ) ), 'E'( '0', f( Y ) ), ~( 'LE'( f( X ), s( '0'
% 0.48/1.03 ) ) ) ] )
% 0.48/1.03 , clause( 29, [ ~( 'LE'( f( Y ), s( '0' ) ) ), ~( iLEQ( Y, X ) ), 'E'( '0'
% 0.48/1.03 , f( X ) ) ] )
% 0.48/1.03 , substitution( 0, [ :=( X, Y ), :=( Y, X )] ), permutation( 0, [ ==>( 0, 2
% 0.48/1.03 ), ==>( 1, 0 ), ==>( 2, 1 )] ) ).
% 0.48/1.03
% 0.48/1.03
% 0.48/1.03 resolution(
% 0.48/1.04 clause( 31, [ ~( 'E'( s( '0' ), f( X ) ) ), ~( 'E'( s( '0' ), f( g( X ) ) )
% 0.48/1.04 ) ] )
% 0.48/1.04 , clause( 0, [ ~( 'E'( f( X ), f( g( X ) ) ) ) ] )
% 0.48/1.04 , 0, clause( 22, [ ~( 'E'( s( '0' ), f( X ) ) ), ~( 'E'( s( '0' ), f( g( X
% 0.48/1.04 ) ) ) ), 'E'( f( X ), f( g( X ) ) ) ] )
% 0.48/1.04 , 2, substitution( 0, [ :=( X, X )] ), substitution( 1, [ :=( X, X )] )
% 0.48/1.04 ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 subsumption(
% 0.48/1.04 clause( 6, [ ~( 'E'( s( '0' ), f( g( X ) ) ) ), ~( 'E'( s( '0' ), f( X ) )
% 0.48/1.04 ) ] )
% 0.48/1.04 , clause( 31, [ ~( 'E'( s( '0' ), f( X ) ) ), ~( 'E'( s( '0' ), f( g( X ) )
% 0.48/1.04 ) ) ] )
% 0.48/1.04 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1,
% 0.48/1.04 0 )] ) ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 subsumption(
% 0.48/1.04 clause( 7, [ iLEQ( X, g( X ) ) ] )
% 0.48/1.04 , clause( 24, [ iLEQ( X, g( X ) ) ] )
% 0.48/1.04 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 resolution(
% 0.48/1.04 clause( 32, [ ~( iLEQ( X, Y ) ), 'E'( '0', f( Y ) ), 'E'( s( '0' ), f( X )
% 0.48/1.04 ) ] )
% 0.48/1.04 , clause( 5, [ ~( iLEQ( X, Y ) ), 'E'( '0', f( Y ) ), ~( 'LE'( f( X ), s(
% 0.48/1.04 '0' ) ) ) ] )
% 0.48/1.04 , 2, clause( 3, [ 'E'( s( '0' ), f( X ) ), 'LE'( f( X ), s( '0' ) ) ] )
% 0.48/1.04 , 1, substitution( 0, [ :=( X, X ), :=( Y, Y )] ), substitution( 1, [ :=( X
% 0.48/1.04 , X )] )).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 subsumption(
% 0.48/1.04 clause( 8, [ 'E'( '0', f( Y ) ), 'E'( s( '0' ), f( X ) ), ~( iLEQ( X, Y ) )
% 0.48/1.04 ] )
% 0.48/1.04 , clause( 32, [ ~( iLEQ( X, Y ) ), 'E'( '0', f( Y ) ), 'E'( s( '0' ), f( X
% 0.48/1.04 ) ) ] )
% 0.48/1.04 , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 2
% 0.48/1.04 ), ==>( 1, 0 ), ==>( 2, 1 )] ) ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 resolution(
% 0.48/1.04 clause( 33, [ 'E'( '0', f( g( X ) ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.04 , clause( 8, [ 'E'( '0', f( Y ) ), 'E'( s( '0' ), f( X ) ), ~( iLEQ( X, Y )
% 0.48/1.04 ) ] )
% 0.48/1.04 , 2, clause( 7, [ iLEQ( X, g( X ) ) ] )
% 0.48/1.04 , 0, substitution( 0, [ :=( X, X ), :=( Y, g( X ) )] ), substitution( 1, [
% 0.48/1.04 :=( X, X )] )).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 subsumption(
% 0.48/1.04 clause( 9, [ 'E'( s( '0' ), f( X ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , clause( 33, [ 'E'( '0', f( g( X ) ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.04 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1,
% 0.48/1.04 0 )] ) ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 resolution(
% 0.48/1.04 clause( 34, [ 'E'( '0', f( X ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.04 , clause( 8, [ 'E'( '0', f( Y ) ), 'E'( s( '0' ), f( X ) ), ~( iLEQ( X, Y )
% 0.48/1.04 ) ] )
% 0.48/1.04 , 2, clause( 1, [ iLEQ( X, X ) ] )
% 0.48/1.04 , 0, substitution( 0, [ :=( X, X ), :=( Y, X )] ), substitution( 1, [ :=( X
% 0.48/1.04 , X )] )).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 subsumption(
% 0.48/1.04 clause( 10, [ 'E'( '0', f( X ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.04 , clause( 34, [ 'E'( '0', f( X ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.04 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 ), ==>( 1,
% 0.48/1.04 1 )] ) ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 resolution(
% 0.48/1.04 clause( 35, [ ~( 'E'( s( '0' ), f( X ) ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , clause( 6, [ ~( 'E'( s( '0' ), f( g( X ) ) ) ), ~( 'E'( s( '0' ), f( X )
% 0.48/1.04 ) ) ] )
% 0.48/1.04 , 0, clause( 10, [ 'E'( '0', f( X ) ), 'E'( s( '0' ), f( X ) ) ] )
% 0.48/1.04 , 1, substitution( 0, [ :=( X, X )] ), substitution( 1, [ :=( X, g( X ) )] )
% 0.48/1.04 ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 resolution(
% 0.48/1.04 clause( 37, [ 'E'( '0', f( g( X ) ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , clause( 35, [ ~( 'E'( s( '0' ), f( X ) ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , 0, clause( 9, [ 'E'( s( '0' ), f( X ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , 0, substitution( 0, [ :=( X, X )] ), substitution( 1, [ :=( X, X )] )
% 0.48/1.04 ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 factor(
% 0.48/1.04 clause( 38, [ 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , clause( 37, [ 'E'( '0', f( g( X ) ) ), 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , 0, 1, substitution( 0, [ :=( X, X )] )).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 subsumption(
% 0.48/1.04 clause( 11, [ 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , clause( 38, [ 'E'( '0', f( g( X ) ) ) ] )
% 0.48/1.04 , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 ==> clause( 14, [] )
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04
% 0.48/1.04 !!! Internal Problem: OH, OH, COULD NOT DERIVE GOAL !!!
% 0.48/1.04
% 0.48/1.04 Bliksem ended
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