TSTP Solution File: LCL107-1 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : LCL107-1 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n024.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 : Sun Jul 17 07:50:23 EDT 2022

% Result   : Unsatisfiable 0.69s 1.09s
% Output   : Refutation 0.69s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.10/0.11  % Problem  : LCL107-1 : TPTP v8.1.0. Released v1.0.0.
% 0.10/0.12  % Command  : bliksem %s
% 0.11/0.33  % Computer : n024.cluster.edu
% 0.11/0.33  % Model    : x86_64 x86_64
% 0.11/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.33  % Memory   : 8042.1875MB
% 0.11/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.33  % CPULimit : 300
% 0.11/0.33  % DateTime : Sun Jul  3 22:00:14 EDT 2022
% 0.11/0.33  % CPUTime  : 
% 0.69/1.09  *** allocated 10000 integers for termspace/termends
% 0.69/1.09  *** allocated 10000 integers for clauses
% 0.69/1.09  *** allocated 10000 integers for justifications
% 0.69/1.09  Bliksem 1.12
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Automatic Strategy Selection
% 0.69/1.09  
% 0.69/1.09  Clauses:
% 0.69/1.09  [
% 0.69/1.09     [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), ~( 'is_a_theorem'( X ) ), 
% 0.69/1.09    'is_a_theorem'( Y ) ],
% 0.69/1.09     [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( X, Y )
% 0.69/1.09    , Z ), equivalent( equivalent( T, U ), equivalent( equivalent( equivalent( 
% 0.69/1.09    W, U ), equivalent( W, T ) ), V0 ) ) ), equivalent( Z, equivalent( 
% 0.69/1.09    equivalent( Y, X ), V0 ) ) ) ) ],
% 0.69/1.09     [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b ), c ), 
% 0.69/1.09    equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), c ) ) ) )
% 0.69/1.09     ) ]
% 0.69/1.09  ] .
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  percentage equality = 0.000000, percentage horn = 1.000000
% 0.69/1.09  This is a near-Horn, non-equality  problem
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Options Used:
% 0.69/1.09  
% 0.69/1.09  useres =            1
% 0.69/1.09  useparamod =        0
% 0.69/1.09  useeqrefl =         0
% 0.69/1.09  useeqfact =         0
% 0.69/1.09  usefactor =         1
% 0.69/1.09  usesimpsplitting =  0
% 0.69/1.09  usesimpdemod =      0
% 0.69/1.09  usesimpres =        4
% 0.69/1.09  
% 0.69/1.09  resimpinuse      =  1000
% 0.69/1.09  resimpclauses =     20000
% 0.69/1.09  substype =          standard
% 0.69/1.09  backwardsubs =      1
% 0.69/1.09  selectoldest =      5
% 0.69/1.09  
% 0.69/1.09  litorderings [0] =  split
% 0.69/1.09  litorderings [1] =  liftord
% 0.69/1.09  
% 0.69/1.09  termordering =      none
% 0.69/1.09  
% 0.69/1.09  litapriori =        1
% 0.69/1.09  termapriori =       0
% 0.69/1.09  litaposteriori =    0
% 0.69/1.09  termaposteriori =   0
% 0.69/1.09  demodaposteriori =  0
% 0.69/1.09  ordereqreflfact =   0
% 0.69/1.09  
% 0.69/1.09  litselect =         negative
% 0.69/1.09  
% 0.69/1.09  maxweight =         30000
% 0.69/1.09  maxdepth =          30000
% 0.69/1.09  maxlength =         115
% 0.69/1.09  maxnrvars =         195
% 0.69/1.09  excuselevel =       0
% 0.69/1.09  increasemaxweight = 0
% 0.69/1.09  
% 0.69/1.09  maxselected =       10000000
% 0.69/1.09  maxnrclauses =      10000000
% 0.69/1.09  
% 0.69/1.09  showgenerated =    0
% 0.69/1.09  showkept =         0
% 0.69/1.09  showselected =     0
% 0.69/1.09  showdeleted =      0
% 0.69/1.09  showresimp =       1
% 0.69/1.09  showstatus =       2000
% 0.69/1.09  
% 0.69/1.09  prologoutput =     1
% 0.69/1.09  nrgoals =          5000000
% 0.69/1.09  totalproof =       1
% 0.69/1.09  
% 0.69/1.09  Symbols occurring in the translation:
% 0.69/1.09  
% 0.69/1.09  {}  [0, 0]      (w:1, o:2, a:1, s:1, b:0), 
% 0.69/1.09  .  [1, 2]      (w:1, o:26, a:1, s:1, b:0), 
% 0.69/1.09  !  [4, 1]      (w:1, o:20, a:1, s:1, b:0), 
% 0.69/1.09  =  [13, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 0.69/1.09  ==>  [14, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 0.69/1.09  equivalent  [41, 2]      (w:1, o:51, a:1, s:1, b:0), 
% 0.69/1.09  'is_a_theorem'  [42, 1]      (w:1, o:25, a:1, s:1, b:0), 
% 0.69/1.09  a  [48, 0]      (w:1, o:16, a:1, s:1, b:0), 
% 0.69/1.09  b  [49, 0]      (w:1, o:17, a:1, s:1, b:0), 
% 0.69/1.09  c  [50, 0]      (w:1, o:18, a:1, s:1, b:0), 
% 0.69/1.09  e  [51, 0]      (w:1, o:19, a:1, s:1, b:0).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Starting Search:
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Bliksems!, er is een bewijs:
% 0.69/1.09  % SZS status Unsatisfiable
% 0.69/1.09  % SZS output start Refutation
% 0.69/1.09  
% 0.69/1.09  clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y )
% 0.69/1.09    , ~( 'is_a_theorem'( X ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( equivalent( 
% 0.69/1.09    equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), equivalent( Z, 
% 0.69/1.09    equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 2, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b )
% 0.69/1.09    , c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), c
% 0.69/1.09     ) ) ) ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 3, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), Z ), equivalent( 
% 0.69/1.09    equivalent( T, U ), equivalent( equivalent( equivalent( W, U ), 
% 0.69/1.09    equivalent( W, T ) ), V0 ) ) ), equivalent( Z, equivalent( equivalent( Y
% 0.69/1.09    , X ), V0 ) ) ), V1 ) ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 4, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), 
% 0.69/1.09    equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( V0, U
% 0.69/1.09     ), equivalent( V0, W ) ) ), T ) ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 5, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( X, Y ), equivalent( equivalent( 
% 0.69/1.09    equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), equivalent( equivalent( 
% 0.69/1.09    equivalent( U, W ), equivalent( equivalent( V0, U ), equivalent( V0, W )
% 0.69/1.09     ) ), T ) ), V1 ) ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 6, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, Y ), equivalent( X, Z ) ), equivalent( equivalent( equivalent( T, 
% 0.69/1.09    equivalent( equivalent( U, W ), equivalent( U, V0 ) ) ), equivalent( T, 
% 0.69/1.09    equivalent( W, V0 ) ) ), V1 ) ), equivalent( equivalent( Y, Z ), V1 ) ) )
% 0.69/1.09     ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 7, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X
% 0.69/1.09    , equivalent( Z, T ) ) ), equivalent( equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( U, V0 ) ), V1 ) ), equivalent( equivalent( W, V0 ), V1 ) ) )
% 0.69/1.09     ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 9, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y, Z ), T ) )
% 0.69/1.09     ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 12, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.69/1.09     ) ), T ), equivalent( equivalent( Y, Z ), T ) ), U ) ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 62, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), Z
% 0.69/1.09     ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z ) )
% 0.69/1.09     ) ) ] )
% 0.69/1.09  .
% 0.69/1.09  clause( 258, [] )
% 0.69/1.09  .
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  % SZS output end Refutation
% 0.69/1.09  found a proof!
% 0.69/1.09  
% 0.69/1.09  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 0.69/1.09  
% 0.69/1.09  initialclauses(
% 0.69/1.09  [ clause( 260, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), ~( 
% 0.69/1.09    'is_a_theorem'( X ) ), 'is_a_theorem'( Y ) ] )
% 0.69/1.09  , clause( 261, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( 
% 0.69/1.09    equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), 
% 0.69/1.09    equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  , clause( 262, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, 
% 0.69/1.09    b ), c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e )
% 0.69/1.09    , c ) ) ) ) ) ] )
% 0.69/1.09  ] ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y )
% 0.69/1.09    , ~( 'is_a_theorem'( X ) ) ] )
% 0.69/1.09  , clause( 260, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), ~( 
% 0.69/1.09    'is_a_theorem'( X ) ), 'is_a_theorem'( Y ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 0.69/1.09     ), ==>( 1, 2 ), ==>( 2, 1 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( equivalent( 
% 0.69/1.09    equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), equivalent( Z, 
% 0.69/1.09    equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  , clause( 261, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( 
% 0.69/1.09    equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), 
% 0.69/1.09    equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, W ), :=( V0, V0 )] ), permutation( 0, [ ==>( 0, 0 )] )
% 0.69/1.09     ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 2, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b )
% 0.69/1.09    , c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), c
% 0.69/1.09     ) ) ) ) ) ] )
% 0.69/1.09  , clause( 262, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, 
% 0.69/1.09    b ), c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e )
% 0.69/1.09    , c ) ) ) ) ) ] )
% 0.69/1.09  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 264, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), 
% 0.69/1.09    equivalent( equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) )
% 0.69/1.09     ), equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ), V1 ) ) ), 
% 0.69/1.09    'is_a_theorem'( V1 ) ] )
% 0.69/1.09  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.69/1.09     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.69/1.09  , 2, clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( 
% 0.69/1.09    equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), 
% 0.69/1.09    equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( 
% 0.69/1.09    equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), 
% 0.69/1.09    equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ) ), :=( Y, V1 )] )
% 0.69/1.09    , substitution( 1, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( 
% 0.69/1.09    U, U ), :=( W, W ), :=( V0, V0 )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 3, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), Z ), equivalent( 
% 0.69/1.09    equivalent( T, U ), equivalent( equivalent( equivalent( W, U ), 
% 0.69/1.09    equivalent( W, T ) ), V0 ) ) ), equivalent( Z, equivalent( equivalent( Y
% 0.69/1.09    , X ), V0 ) ) ), V1 ) ) ) ] )
% 0.69/1.09  , clause( 264, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), 
% 0.69/1.09    equivalent( equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) )
% 0.69/1.09     ), equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ), V1 ) ) ), 
% 0.69/1.09    'is_a_theorem'( V1 ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, W ), :=( V0, V0 ), :=( V1, V1 )] ), permutation( 0, [ ==>( 
% 0.69/1.09    0, 1 ), ==>( 1, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 265, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), 
% 0.69/1.09    equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( V0, U
% 0.69/1.09     ), equivalent( V0, W ) ) ), T ) ) ) ] )
% 0.69/1.09  , clause( 3, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), Z ), equivalent( 
% 0.69/1.09    equivalent( T, U ), equivalent( equivalent( equivalent( W, U ), 
% 0.69/1.09    equivalent( W, T ) ), V0 ) ) ), equivalent( Z, equivalent( equivalent( Y
% 0.69/1.09    , X ), V0 ) ) ), V1 ) ) ) ] )
% 0.69/1.09  , 1, clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( 
% 0.69/1.09    equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), 
% 0.69/1.09    equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, equivalent( V0, U ) ), :=( Y, equivalent( V0
% 0.69/1.09    , W ) ), :=( Z, equivalent( U, W ) ), :=( T, X ), :=( U, Y ), :=( W, Z )
% 0.69/1.09    , :=( V0, T ), :=( V1, equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), 
% 0.69/1.09    equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( V0, U
% 0.69/1.09     ), equivalent( V0, W ) ) ), T ) ) )] ), substitution( 1, [ :=( X, 
% 0.69/1.09    equivalent( equivalent( V0, U ), equivalent( V0, W ) ) ), :=( Y, 
% 0.69/1.09    equivalent( U, W ) ), :=( Z, equivalent( equivalent( X, Y ), equivalent( 
% 0.69/1.09    equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) ) ), :=( T, U )
% 0.69/1.09    , :=( U, W ), :=( W, V0 ), :=( V0, T )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 4, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), 
% 0.69/1.09    equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( V0, U
% 0.69/1.09     ), equivalent( V0, W ) ) ), T ) ) ) ] )
% 0.69/1.09  , clause( 265, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y )
% 0.69/1.09    , equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) )
% 0.69/1.09    , equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( V0
% 0.69/1.09    , U ), equivalent( V0, W ) ) ), T ) ) ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, W ), :=( V0, V0 )] ), permutation( 0, [ ==>( 0, 0 )] )
% 0.69/1.09     ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 267, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( equivalent( equivalent( Z, Y ), 
% 0.69/1.09    equivalent( Z, X ) ), T ) ), equivalent( equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( equivalent( V0, U ), equivalent( V0, W ) ) ), T ) ), V1 ) ) )
% 0.69/1.09    , 'is_a_theorem'( V1 ) ] )
% 0.69/1.09  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.69/1.09     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.69/1.09  , 2, clause( 4, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.69/1.09     ), equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T )
% 0.69/1.09     ), equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( 
% 0.69/1.09    V0, U ), equivalent( V0, W ) ) ), T ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    equivalent( equivalent( equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), 
% 0.69/1.09    equivalent( equivalent( equivalent( U, W ), equivalent( equivalent( V0, U
% 0.69/1.09     ), equivalent( V0, W ) ) ), T ) ) ), :=( Y, V1 )] ), substitution( 1, [ 
% 0.69/1.09    :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U, U ), :=( W, W ), 
% 0.69/1.09    :=( V0, V0 )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 5, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( X, Y ), equivalent( equivalent( 
% 0.69/1.09    equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), equivalent( equivalent( 
% 0.69/1.09    equivalent( U, W ), equivalent( equivalent( V0, U ), equivalent( V0, W )
% 0.69/1.09     ) ), T ) ), V1 ) ) ) ] )
% 0.69/1.09  , clause( 267, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( equivalent( equivalent( Z, Y ), 
% 0.69/1.09    equivalent( Z, X ) ), T ) ), equivalent( equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( equivalent( V0, U ), equivalent( V0, W ) ) ), T ) ), V1 ) ) )
% 0.69/1.09    , 'is_a_theorem'( V1 ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, W ), :=( V0, V0 ), :=( V1, V1 )] ), permutation( 0, [ ==>( 
% 0.69/1.09    0, 1 ), ==>( 1, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 268, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( equivalent( 
% 0.69/1.09    equivalent( T, equivalent( equivalent( U, W ), equivalent( U, V0 ) ) ), 
% 0.69/1.09    equivalent( T, equivalent( W, V0 ) ) ), V1 ) ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), V1 ) ) ) ] )
% 0.69/1.09  , clause( 5, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( X, Y ), equivalent( equivalent( 
% 0.69/1.09    equivalent( Z, Y ), equivalent( Z, X ) ), T ) ), equivalent( equivalent( 
% 0.69/1.09    equivalent( U, W ), equivalent( equivalent( V0, U ), equivalent( V0, W )
% 0.69/1.09     ) ), T ) ), V1 ) ) ) ] )
% 0.69/1.09  , 1, clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, U ), equivalent( 
% 0.69/1.09    equivalent( equivalent( W, U ), equivalent( W, T ) ), V0 ) ) ), 
% 0.69/1.09    equivalent( Z, equivalent( equivalent( Y, X ), V0 ) ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, Z ), :=( Y, Y ), :=( Z, X ), :=( T, 
% 0.69/1.09    equivalent( equivalent( equivalent( T, equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( U, V0 ) ) ), equivalent( T, equivalent( W, V0 ) ) ), V1 ) ), 
% 0.69/1.09    :=( U, W ), :=( W, V0 ), :=( V0, U ), :=( V1, equivalent( equivalent( 
% 0.69/1.09    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( 
% 0.69/1.09    equivalent( equivalent( T, equivalent( equivalent( U, W ), equivalent( U
% 0.69/1.09    , V0 ) ) ), equivalent( T, equivalent( W, V0 ) ) ), V1 ) ), equivalent( 
% 0.69/1.09    equivalent( Y, Z ), V1 ) ) )] ), substitution( 1, [ :=( X, Z ), :=( Y, Y
% 0.69/1.09     ), :=( Z, equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z )
% 0.69/1.09     ), equivalent( equivalent( equivalent( T, equivalent( equivalent( U, W )
% 0.69/1.09    , equivalent( U, V0 ) ) ), equivalent( T, equivalent( W, V0 ) ) ), V1 ) )
% 0.69/1.09     ), :=( T, equivalent( W, V0 ) ), :=( U, equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( U, V0 ) ) ), :=( W, T ), :=( V0, V1 )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 6, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, Y ), equivalent( X, Z ) ), equivalent( equivalent( equivalent( T, 
% 0.69/1.09    equivalent( equivalent( U, W ), equivalent( U, V0 ) ) ), equivalent( T, 
% 0.69/1.09    equivalent( W, V0 ) ) ), V1 ) ), equivalent( equivalent( Y, Z ), V1 ) ) )
% 0.69/1.09     ] )
% 0.69/1.09  , clause( 268, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( equivalent( 
% 0.69/1.09    equivalent( T, equivalent( equivalent( U, W ), equivalent( U, V0 ) ) ), 
% 0.69/1.09    equivalent( T, equivalent( W, V0 ) ) ), V1 ) ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), V1 ) ) ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, W ), :=( V0, V0 ), :=( V1, V1 )] ), permutation( 0, [ ==>( 
% 0.69/1.09    0, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 269, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.69/1.09    equivalent( X, equivalent( Z, T ) ) ), equivalent( equivalent( equivalent( 
% 0.69/1.09    U, W ), equivalent( U, V0 ) ), V1 ) ), equivalent( equivalent( W, V0 ), 
% 0.69/1.09    V1 ) ) ) ] )
% 0.69/1.09  , clause( 3, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), Z ), equivalent( 
% 0.69/1.09    equivalent( T, U ), equivalent( equivalent( equivalent( W, U ), 
% 0.69/1.09    equivalent( W, T ) ), V0 ) ) ), equivalent( Z, equivalent( equivalent( Y
% 0.69/1.09    , X ), V0 ) ) ), V1 ) ) ) ] )
% 0.69/1.09  , 1, clause( 6, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( equivalent( 
% 0.69/1.09    equivalent( T, equivalent( equivalent( U, W ), equivalent( U, V0 ) ) ), 
% 0.69/1.09    equivalent( T, equivalent( W, V0 ) ) ), V1 ) ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), V1 ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, V0 ), :=( Y, W ), :=( Z, equivalent( 
% 0.69/1.09    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.69/1.09    equivalent( X, equivalent( Z, T ) ) ) ), :=( T, V0 ), :=( U, W ), :=( W, 
% 0.69/1.09    U ), :=( V0, V1 ), :=( V1, equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X
% 0.69/1.09    , equivalent( Z, T ) ) ), equivalent( equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( U, V0 ) ), V1 ) ), equivalent( equivalent( W, V0 ), V1 ) ) )] )
% 0.69/1.09    , substitution( 1, [ :=( X, equivalent( V0, W ) ), :=( Y, equivalent( 
% 0.69/1.09    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.69/1.09    equivalent( X, equivalent( Z, T ) ) ) ), :=( Z, equivalent( equivalent( 
% 0.69/1.09    equivalent( U, W ), equivalent( U, V0 ) ), V1 ) ), :=( T, X ), :=( U, Y )
% 0.69/1.09    , :=( W, Z ), :=( V0, T ), :=( V1, equivalent( equivalent( W, V0 ), V1 )
% 0.69/1.09     )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 7, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X
% 0.69/1.09    , equivalent( Z, T ) ) ), equivalent( equivalent( equivalent( U, W ), 
% 0.69/1.09    equivalent( U, V0 ) ), V1 ) ), equivalent( equivalent( W, V0 ), V1 ) ) )
% 0.69/1.09     ] )
% 0.69/1.09  , clause( 269, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.69/1.09    equivalent( X, equivalent( Z, T ) ) ), equivalent( equivalent( equivalent( 
% 0.69/1.09    U, W ), equivalent( U, V0 ) ), V1 ) ), equivalent( equivalent( W, V0 ), 
% 0.69/1.09    V1 ) ) ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, W ), :=( V0, V0 ), :=( V1, V1 )] ), permutation( 0, [ ==>( 
% 0.69/1.09    0, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 270, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), T ) ) ) ] )
% 0.69/1.09  , clause( 3, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), Z ), equivalent( 
% 0.69/1.09    equivalent( T, U ), equivalent( equivalent( equivalent( W, U ), 
% 0.69/1.09    equivalent( W, T ) ), V0 ) ) ), equivalent( Z, equivalent( equivalent( Y
% 0.69/1.09    , X ), V0 ) ) ), V1 ) ) ) ] )
% 0.69/1.09  , 1, clause( 7, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.69/1.09    equivalent( X, equivalent( Z, T ) ) ), equivalent( equivalent( equivalent( 
% 0.69/1.09    U, W ), equivalent( U, V0 ) ), V1 ) ), equivalent( equivalent( W, V0 ), 
% 0.69/1.09    V1 ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, Z ), :=( Y, Y ), :=( Z, equivalent( 
% 0.69/1.09    equivalent( U, equivalent( equivalent( X, Y ), equivalent( X, Z ) ) ), 
% 0.69/1.09    equivalent( U, T ) ) ), :=( T, Z ), :=( U, Y ), :=( W, X ), :=( V0, T ), 
% 0.69/1.09    :=( V1, equivalent( equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    equivalent( X, Z ) ), T ), equivalent( equivalent( Y, Z ), T ) ) )] ), 
% 0.69/1.09    substitution( 1, [ :=( X, equivalent( Z, Y ) ), :=( Y, U ), :=( Z, 
% 0.69/1.09    equivalent( equivalent( X, Y ), equivalent( X, Z ) ) ), :=( T, T ), :=( U
% 0.69/1.09    , U ), :=( W, equivalent( equivalent( X, Y ), equivalent( X, Z ) ) ), 
% 0.69/1.09    :=( V0, T ), :=( V1, equivalent( equivalent( Y, Z ), T ) )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 9, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.69/1.09    X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y, Z ), T ) )
% 0.69/1.09     ) ] )
% 0.69/1.09  , clause( 270, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), T ) ) ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.69/1.09    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 272, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( 
% 0.69/1.09    equivalent( Y, Z ), T ) ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.69/1.09  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.69/1.09     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.69/1.09  , 2, clause( 9, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), T ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), T ) ) ), :=( Y, U )] ), substitution( 1, [ :=( X, X ), :=( Y, Y )
% 0.69/1.09    , :=( Z, Z ), :=( T, T )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 12, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.69/1.09     ) ), T ), equivalent( equivalent( Y, Z ), T ) ), U ) ) ) ] )
% 0.69/1.09  , clause( 272, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( 
% 0.69/1.09    equivalent( Y, Z ), T ) ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.69/1.09    , U )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 273, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.69/1.09    Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z )
% 0.69/1.09     ) ) ) ] )
% 0.69/1.09  , clause( 12, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.69/1.09    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.69/1.09     ) ), T ), equivalent( equivalent( Y, Z ), T ) ), U ) ) ) ] )
% 0.69/1.09  , 1, clause( 9, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), equivalent( X, Z ) ), T ), equivalent( equivalent( Y
% 0.69/1.09    , Z ), T ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [ :=( X, X ), :=( Y, T ), :=( Z, Y ), :=( T, 
% 0.69/1.09    equivalent( equivalent( X, T ), Z ) ), :=( U, equivalent( equivalent( 
% 0.69/1.09    equivalent( X, Y ), Z ), equivalent( equivalent( T, Y ), equivalent( 
% 0.69/1.09    equivalent( X, T ), Z ) ) ) )] ), substitution( 1, [ :=( X, equivalent( X
% 0.69/1.09    , T ) ), :=( Y, equivalent( X, Y ) ), :=( Z, Z ), :=( T, equivalent( 
% 0.69/1.09    equivalent( T, Y ), equivalent( equivalent( X, T ), Z ) ) )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 62, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), Z
% 0.69/1.09     ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z ) )
% 0.69/1.09     ) ) ] )
% 0.69/1.09  , clause( 273, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y )
% 0.69/1.09    , Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z
% 0.69/1.09     ) ) ) ) ] )
% 0.69/1.09  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.69/1.09    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  resolution(
% 0.69/1.09  clause( 274, [] )
% 0.69/1.09  , clause( 2, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b
% 0.69/1.09     ), c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), 
% 0.69/1.09    c ) ) ) ) ) ] )
% 0.69/1.09  , 0, clause( 62, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.69/1.09     ), Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), 
% 0.69/1.09    Z ) ) ) ) ] )
% 0.69/1.09  , 0, substitution( 0, [] ), substitution( 1, [ :=( X, a ), :=( Y, b ), :=( 
% 0.69/1.09    Z, c ), :=( T, e )] )).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  subsumption(
% 0.69/1.09  clause( 258, [] )
% 0.69/1.09  , clause( 274, [] )
% 0.69/1.09  , substitution( 0, [] ), permutation( 0, [] ) ).
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  end.
% 0.69/1.09  
% 0.69/1.09  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 0.69/1.09  
% 0.69/1.09  Memory use:
% 0.69/1.09  
% 0.69/1.09  space for terms:        6254
% 0.69/1.09  space for clauses:      35998
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  clauses generated:      451
% 0.69/1.09  clauses kept:           259
% 0.69/1.09  clauses selected:       68
% 0.69/1.09  clauses deleted:        0
% 0.69/1.09  clauses inuse deleted:  0
% 0.69/1.09  
% 0.69/1.09  subsentry:          260
% 0.69/1.09  literals s-matched: 192
% 0.69/1.09  literals matched:   192
% 0.69/1.09  full subsumption:   0
% 0.69/1.09  
% 0.69/1.09  checksum:           -2116716318
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Bliksem ended
%------------------------------------------------------------------------------