TSTP Solution File: GRP039-3 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : GRP039-3 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n013.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 : Sat Jul 16 07:34:30 EDT 2022

% Result   : Unsatisfiable 19.75s 20.14s
% Output   : Refutation 19.75s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.11  % Problem  : GRP039-3 : TPTP v8.1.0. Released v1.0.0.
% 0.07/0.12  % Command  : bliksem %s
% 0.12/0.33  % Computer : n013.cluster.edu
% 0.12/0.33  % Model    : x86_64 x86_64
% 0.12/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33  % Memory   : 8042.1875MB
% 0.12/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33  % CPULimit : 300
% 0.12/0.33  % DateTime : Mon Jun 13 18:51:29 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 19.75/20.14  *** allocated 10000 integers for termspace/termends
% 19.75/20.14  *** allocated 10000 integers for clauses
% 19.75/20.14  *** allocated 10000 integers for justifications
% 19.75/20.14  Bliksem 1.12
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Automatic Strategy Selection
% 19.75/20.14  
% 19.75/20.14  Clauses:
% 19.75/20.14  [
% 19.75/20.14     [ product( identity, X, X ) ],
% 19.75/20.14     [ product( X, identity, X ) ],
% 19.75/20.14     [ product( inverse( X ), X, identity ) ],
% 19.75/20.14     [ product( X, inverse( X ), identity ) ],
% 19.75/20.14     [ product( X, Y, multiply( X, Y ) ) ],
% 19.75/20.14     [ ~( product( X, Y, Z ) ), ~( product( X, Y, T ) ), =( Z, T ) ],
% 19.75/20.14     [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( product( Z, T, W
% 19.75/20.14     ) ), product( X, U, W ) ],
% 19.75/20.14     [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( product( X, U, W
% 19.75/20.14     ) ), product( Z, T, W ) ],
% 19.75/20.14     [ ~( 'subgroup_member'( X ) ), ~( 'subgroup_member'( Y ) ), ~( product( 
% 19.75/20.14    X, inverse( Y ), Z ) ), 'subgroup_member'( Z ) ],
% 19.75/20.14     [ ~( product( X, Y, Z ) ), ~( product( X, T, Z ) ), =( T, Y ) ],
% 19.75/20.14     [ ~( product( X, Y, Z ) ), ~( product( T, Y, Z ) ), =( T, X ) ],
% 19.75/20.14     [ =( inverse( inverse( X ) ), X ) ],
% 19.75/20.14     [ 'subgroup_member'( identity ) ],
% 19.75/20.14     [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( X ) ) ],
% 19.75/20.14     [ 'subgroup_member'( 'element_in_O2'( X, Y ) ), 'subgroup_member'( Y ), 
% 19.75/20.14    'subgroup_member'( X ) ],
% 19.75/20.14     [ product( X, 'element_in_O2'( X, Y ), Y ), 'subgroup_member'( Y ), 
% 19.75/20.14    'subgroup_member'( X ) ],
% 19.75/20.14     [ 'subgroup_member'( b ) ],
% 19.75/20.14     [ product( b, inverse( a ), c ) ],
% 19.75/20.14     [ product( a, c, d ) ],
% 19.75/20.14     [ ~( 'subgroup_member'( d ) ) ]
% 19.75/20.14  ] .
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  percentage equality = 0.100000, percentage horn = 0.900000
% 19.75/20.14  This is a problem with some equality
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Options Used:
% 19.75/20.14  
% 19.75/20.14  useres =            1
% 19.75/20.14  useparamod =        1
% 19.75/20.14  useeqrefl =         1
% 19.75/20.14  useeqfact =         1
% 19.75/20.14  usefactor =         1
% 19.75/20.14  usesimpsplitting =  0
% 19.75/20.14  usesimpdemod =      5
% 19.75/20.14  usesimpres =        3
% 19.75/20.14  
% 19.75/20.14  resimpinuse      =  1000
% 19.75/20.14  resimpclauses =     20000
% 19.75/20.14  substype =          eqrewr
% 19.75/20.14  backwardsubs =      1
% 19.75/20.14  selectoldest =      5
% 19.75/20.14  
% 19.75/20.14  litorderings [0] =  split
% 19.75/20.14  litorderings [1] =  extend the termordering, first sorting on arguments
% 19.75/20.14  
% 19.75/20.14  termordering =      kbo
% 19.75/20.14  
% 19.75/20.14  litapriori =        0
% 19.75/20.14  termapriori =       1
% 19.75/20.14  litaposteriori =    0
% 19.75/20.14  termaposteriori =   0
% 19.75/20.14  demodaposteriori =  0
% 19.75/20.14  ordereqreflfact =   0
% 19.75/20.14  
% 19.75/20.14  litselect =         negord
% 19.75/20.14  
% 19.75/20.14  maxweight =         15
% 19.75/20.14  maxdepth =          30000
% 19.75/20.14  maxlength =         115
% 19.75/20.14  maxnrvars =         195
% 19.75/20.14  excuselevel =       1
% 19.75/20.14  increasemaxweight = 1
% 19.75/20.14  
% 19.75/20.14  maxselected =       10000000
% 19.75/20.14  maxnrclauses =      10000000
% 19.75/20.14  
% 19.75/20.14  showgenerated =    0
% 19.75/20.14  showkept =         0
% 19.75/20.14  showselected =     0
% 19.75/20.14  showdeleted =      0
% 19.75/20.14  showresimp =       1
% 19.75/20.14  showstatus =       2000
% 19.75/20.14  
% 19.75/20.14  prologoutput =     1
% 19.75/20.14  nrgoals =          5000000
% 19.75/20.14  totalproof =       1
% 19.75/20.14  
% 19.75/20.14  Symbols occurring in the translation:
% 19.75/20.14  
% 19.75/20.14  {}  [0, 0]      (w:1, o:2, a:1, s:1, b:0), 
% 19.75/20.14  .  [1, 2]      (w:1, o:31, a:1, s:1, b:0), 
% 19.75/20.14  !  [4, 1]      (w:0, o:24, a:1, s:1, b:0), 
% 19.75/20.14  =  [13, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 19.75/20.14  ==>  [14, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 19.75/20.14  identity  [39, 0]      (w:1, o:9, a:1, s:1, b:0), 
% 19.75/20.14  product  [41, 3]      (w:1, o:58, a:1, s:1, b:0), 
% 19.75/20.14  inverse  [42, 1]      (w:1, o:29, a:1, s:1, b:0), 
% 19.75/20.14  multiply  [44, 2]      (w:1, o:56, a:1, s:1, b:0), 
% 19.75/20.14  'subgroup_member'  [50, 1]      (w:1, o:30, a:1, s:1, b:0), 
% 19.75/20.14  'element_in_O2'  [54, 2]      (w:1, o:57, a:1, s:1, b:0), 
% 19.75/20.14  b  [55, 0]      (w:1, o:21, a:1, s:1, b:0), 
% 19.75/20.14  a  [56, 0]      (w:1, o:20, a:1, s:1, b:0), 
% 19.75/20.14  c  [57, 0]      (w:1, o:22, a:1, s:1, b:0), 
% 19.75/20.14  d  [58, 0]      (w:1, o:23, a:1, s:1, b:0).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Starting Search:
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    5366
% 19.75/20.14  Kept:         2087
% 19.75/20.14  Inuse:        93
% 19.75/20.14  Deleted:      4
% 19.75/20.14  Deletedinuse: 1
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    10732
% 19.75/20.14  Kept:         4129
% 19.75/20.14  Inuse:        136
% 19.75/20.14  Deleted:      25
% 19.75/20.14  Deletedinuse: 21
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    17170
% 19.75/20.14  Kept:         6146
% 19.75/20.14  Inuse:        181
% 19.75/20.14  Deleted:      31
% 19.75/20.14  Deletedinuse: 23
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    24889
% 19.75/20.14  Kept:         8164
% 19.75/20.14  Inuse:        229
% 19.75/20.14  Deleted:      43
% 19.75/20.14  Deletedinuse: 25
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    32705
% 19.75/20.14  Kept:         10192
% 19.75/20.14  Inuse:        287
% 19.75/20.14  Deleted:      92
% 19.75/20.14  Deletedinuse: 66
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    41477
% 19.75/20.14  Kept:         12202
% 19.75/20.14  Inuse:        332
% 19.75/20.14  Deleted:      97
% 19.75/20.14  Deletedinuse: 69
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    49474
% 19.75/20.14  Kept:         14205
% 19.75/20.14  Inuse:        374
% 19.75/20.14  Deleted:      98
% 19.75/20.14  Deletedinuse: 70
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    64746
% 19.75/20.14  Kept:         16232
% 19.75/20.14  Inuse:        415
% 19.75/20.14  Deleted:      140
% 19.75/20.14  Deletedinuse: 70
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    73615
% 19.75/20.14  Kept:         18550
% 19.75/20.14  Inuse:        431
% 19.75/20.14  Deleted:      140
% 19.75/20.14  Deletedinuse: 70
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying clauses:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    84028
% 19.75/20.14  Kept:         20552
% 19.75/20.14  Inuse:        468
% 19.75/20.14  Deleted:      4726
% 19.75/20.14  Deletedinuse: 71
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    90045
% 19.75/20.14  Kept:         22593
% 19.75/20.14  Inuse:        482
% 19.75/20.14  Deleted:      4729
% 19.75/20.14  Deletedinuse: 74
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    97485
% 19.75/20.14  Kept:         24628
% 19.75/20.14  Inuse:        514
% 19.75/20.14  Deleted:      4729
% 19.75/20.14  Deletedinuse: 74
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    105486
% 19.75/20.14  Kept:         26688
% 19.75/20.14  Inuse:        546
% 19.75/20.14  Deleted:      4729
% 19.75/20.14  Deletedinuse: 74
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    113422
% 19.75/20.14  Kept:         28703
% 19.75/20.14  Inuse:        578
% 19.75/20.14  Deleted:      4729
% 19.75/20.14  Deletedinuse: 74
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    125893
% 19.75/20.14  Kept:         30734
% 19.75/20.14  Inuse:        609
% 19.75/20.14  Deleted:      4734
% 19.75/20.14  Deletedinuse: 74
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    137642
% 19.75/20.14  Kept:         32788
% 19.75/20.14  Inuse:        643
% 19.75/20.14  Deleted:      4736
% 19.75/20.14  Deletedinuse: 76
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    155411
% 19.75/20.14  Kept:         34852
% 19.75/20.14  Inuse:        676
% 19.75/20.14  Deleted:      4736
% 19.75/20.14  Deletedinuse: 76
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    163583
% 19.75/20.14  Kept:         36890
% 19.75/20.14  Inuse:        696
% 19.75/20.14  Deleted:      4739
% 19.75/20.14  Deletedinuse: 79
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    172049
% 19.75/20.14  Kept:         38892
% 19.75/20.14  Inuse:        722
% 19.75/20.14  Deleted:      4742
% 19.75/20.14  Deletedinuse: 80
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying clauses:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    180383
% 19.75/20.14  Kept:         40980
% 19.75/20.14  Inuse:        747
% 19.75/20.14  Deleted:      5995
% 19.75/20.14  Deletedinuse: 82
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    192892
% 19.75/20.14  Kept:         43016
% 19.75/20.14  Inuse:        775
% 19.75/20.14  Deleted:      5998
% 19.75/20.14  Deletedinuse: 83
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    202763
% 19.75/20.14  Kept:         45104
% 19.75/20.14  Inuse:        802
% 19.75/20.14  Deleted:      5999
% 19.75/20.14  Deletedinuse: 83
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    212835
% 19.75/20.14  Kept:         47109
% 19.75/20.14  Inuse:        835
% 19.75/20.14  Deleted:      6003
% 19.75/20.14  Deletedinuse: 84
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    225628
% 19.75/20.14  Kept:         49144
% 19.75/20.14  Inuse:        877
% 19.75/20.14  Deleted:      6003
% 19.75/20.14  Deletedinuse: 84
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    238980
% 19.75/20.14  Kept:         51144
% 19.75/20.14  Inuse:        913
% 19.75/20.14  Deleted:      6004
% 19.75/20.14  Deletedinuse: 84
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Intermediate Status:
% 19.75/20.14  Generated:    245372
% 19.75/20.14  Kept:         53158
% 19.75/20.14  Inuse:        932
% 19.75/20.14  Deleted:      6004
% 19.75/20.14  Deletedinuse: 84
% 19.75/20.14  
% 19.75/20.14  Resimplifying inuse:
% 19.75/20.14  Done
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  Bliksems!, er is een bewijs:
% 19.75/20.14  % SZS status Unsatisfiable
% 19.75/20.14  % SZS output start Refutation
% 19.75/20.14  
% 19.75/20.14  clause( 0, [ product( identity, X, X ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 2, [ product( inverse( X ), X, identity ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 5, [ ~( product( X, Y, Z ) ), ~( product( X, Y, T ) ), =( Z, T ) ]
% 19.75/20.14     )
% 19.75/20.14  .
% 19.75/20.14  clause( 6, [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( product( 
% 19.75/20.14    Z, T, W ) ), product( X, U, W ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 8, [ ~( 'subgroup_member'( X ) ), ~( 'subgroup_member'( Y ) ), ~( 
% 19.75/20.14    product( X, inverse( Y ), Z ) ), 'subgroup_member'( Z ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 9, [ ~( product( X, Y, Z ) ), ~( product( X, T, Z ) ), =( T, Y ) ]
% 19.75/20.14     )
% 19.75/20.14  .
% 19.75/20.14  clause( 11, [ =( inverse( inverse( X ) ), X ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 13, [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( X )
% 19.75/20.14     ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 14, [ 'subgroup_member'( 'element_in_O2'( X, Y ) ), 
% 19.75/20.14    'subgroup_member'( Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 15, [ product( X, 'element_in_O2'( X, Y ), Y ), 'subgroup_member'( 
% 19.75/20.14    Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 16, [ 'subgroup_member'( b ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 17, [ product( b, inverse( a ), c ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 18, [ product( a, c, d ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 19, [ ~( 'subgroup_member'( d ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 30, [ 'subgroup_member'( inverse( b ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 31, [ ~( 'subgroup_member'( inverse( X ) ) ), 'subgroup_member'( X
% 19.75/20.14     ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 38, [ ~( product( identity, X, Y ) ), =( X, Y ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 40, [ ~( 'subgroup_member'( Y ) ), 'subgroup_member'( X ), ~( 
% 19.75/20.14    product( Z, T, inverse( X ) ) ), ~( product( Z, T, Y ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 95, [ ~( product( X, Y, Z ) ), ~( product( identity, Y, T ) ), 
% 19.75/20.14    product( inverse( X ), Z, T ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 164, [ product( b, X, c ), ~( product( identity, inverse( a ), X )
% 19.75/20.14     ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 301, [ ~( 'subgroup_member'( X ) ), ~( product( inverse( b ), 
% 19.75/20.14    inverse( X ), Y ) ), 'subgroup_member'( Y ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 308, [ ~( 'subgroup_member'( a ) ), 'subgroup_member'( c ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 397, [ ~( product( a, X, d ) ), =( X, c ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 730, [ 'subgroup_member'( 'element_in_O2'( X, d ) ), 
% 19.75/20.14    'subgroup_member'( X ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 1230, [ 'subgroup_member'( 'element_in_O2'( a, d ) ), 
% 19.75/20.14    'subgroup_member'( c ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 4576, [ =( 'element_in_O2'( a, d ), c ), 'subgroup_member'( a ) ]
% 19.75/20.14     )
% 19.75/20.14  .
% 19.75/20.14  clause( 8208, [ 'subgroup_member'( c ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 8235, [ 'subgroup_member'( inverse( c ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 8236, [ 'subgroup_member'( X ), ~( product( a, X, d ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 8784, [ ~( product( a, inverse( X ), d ) ), 'subgroup_member'( X )
% 19.75/20.14     ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 9414, [ ~( product( a, inverse( X ), d ) ), ~( 'subgroup_member'( Y
% 19.75/20.14     ) ), ~( product( Y, inverse( X ), Z ) ), 'subgroup_member'( Z ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 9444, [ ~( product( a, inverse( X ), d ) ), ~( 'subgroup_member'( a
% 19.75/20.14     ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 9518, [ ~( product( a, X, d ) ), ~( 'subgroup_member'( a ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 9563, [ ~( 'subgroup_member'( a ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 24576, [ ~( product( identity, inverse( a ), X ) ), ~( product( 
% 19.75/20.14    identity, X, Y ) ), product( inverse( b ), c, Y ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 24627, [ product( inverse( b ), c, inverse( a ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 24662, [ ~( 'subgroup_member'( X ) ), ~( product( inverse( b ), c, 
% 19.75/20.14    X ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 53999, [ ~( product( inverse( b ), c, X ) ) ] )
% 19.75/20.14  .
% 19.75/20.14  clause( 54111, [] )
% 19.75/20.14  .
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  % SZS output end Refutation
% 19.75/20.14  found a proof!
% 19.75/20.14  
% 19.75/20.14  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 19.75/20.14  
% 19.75/20.14  initialclauses(
% 19.75/20.14  [ clause( 54113, [ product( identity, X, X ) ] )
% 19.75/20.14  , clause( 54114, [ product( X, identity, X ) ] )
% 19.75/20.14  , clause( 54115, [ product( inverse( X ), X, identity ) ] )
% 19.75/20.14  , clause( 54116, [ product( X, inverse( X ), identity ) ] )
% 19.75/20.14  , clause( 54117, [ product( X, Y, multiply( X, Y ) ) ] )
% 19.75/20.14  , clause( 54118, [ ~( product( X, Y, Z ) ), ~( product( X, Y, T ) ), =( Z, 
% 19.75/20.14    T ) ] )
% 19.75/20.14  , clause( 54119, [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( 
% 19.75/20.14    product( Z, T, W ) ), product( X, U, W ) ] )
% 19.75/20.14  , clause( 54120, [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( 
% 19.75/20.14    product( X, U, W ) ), product( Z, T, W ) ] )
% 19.75/20.14  , clause( 54121, [ ~( 'subgroup_member'( X ) ), ~( 'subgroup_member'( Y ) )
% 19.75/20.14    , ~( product( X, inverse( Y ), Z ) ), 'subgroup_member'( Z ) ] )
% 19.75/20.14  , clause( 54122, [ ~( product( X, Y, Z ) ), ~( product( X, T, Z ) ), =( T, 
% 19.75/20.14    Y ) ] )
% 19.75/20.14  , clause( 54123, [ ~( product( X, Y, Z ) ), ~( product( T, Y, Z ) ), =( T, 
% 19.75/20.14    X ) ] )
% 19.75/20.14  , clause( 54124, [ =( inverse( inverse( X ) ), X ) ] )
% 19.75/20.14  , clause( 54125, [ 'subgroup_member'( identity ) ] )
% 19.75/20.14  , clause( 54126, [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( 
% 19.75/20.14    X ) ) ] )
% 19.75/20.14  , clause( 54127, [ 'subgroup_member'( 'element_in_O2'( X, Y ) ), 
% 19.75/20.14    'subgroup_member'( Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  , clause( 54128, [ product( X, 'element_in_O2'( X, Y ), Y ), 
% 19.75/20.14    'subgroup_member'( Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  , clause( 54129, [ 'subgroup_member'( b ) ] )
% 19.75/20.14  , clause( 54130, [ product( b, inverse( a ), c ) ] )
% 19.75/20.14  , clause( 54131, [ product( a, c, d ) ] )
% 19.75/20.14  , clause( 54132, [ ~( 'subgroup_member'( d ) ) ] )
% 19.75/20.14  ] ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 0, [ product( identity, X, X ) ] )
% 19.75/20.14  , clause( 54113, [ product( identity, X, X ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 2, [ product( inverse( X ), X, identity ) ] )
% 19.75/20.14  , clause( 54115, [ product( inverse( X ), X, identity ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 5, [ ~( product( X, Y, Z ) ), ~( product( X, Y, T ) ), =( Z, T ) ]
% 19.75/20.14     )
% 19.75/20.14  , clause( 54118, [ ~( product( X, Y, Z ) ), ~( product( X, Y, T ) ), =( Z, 
% 19.75/20.14    T ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 19.75/20.14    permutation( 0, [ ==>( 0, 0 ), ==>( 1, 1 ), ==>( 2, 2 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 6, [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( product( 
% 19.75/20.14    Z, T, W ) ), product( X, U, W ) ] )
% 19.75/20.14  , clause( 54119, [ ~( product( X, Y, Z ) ), ~( product( Y, T, U ) ), ~( 
% 19.75/20.14    product( Z, T, W ) ), product( X, U, W ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 19.75/20.14    , U ), :=( W, W )] ), permutation( 0, [ ==>( 0, 0 ), ==>( 1, 1 ), ==>( 2
% 19.75/20.14    , 2 ), ==>( 3, 3 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 8, [ ~( 'subgroup_member'( X ) ), ~( 'subgroup_member'( Y ) ), ~( 
% 19.75/20.14    product( X, inverse( Y ), Z ) ), 'subgroup_member'( Z ) ] )
% 19.75/20.14  , clause( 54121, [ ~( 'subgroup_member'( X ) ), ~( 'subgroup_member'( Y ) )
% 19.75/20.14    , ~( product( X, inverse( Y ), Z ) ), 'subgroup_member'( Z ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z )] ), 
% 19.75/20.14    permutation( 0, [ ==>( 0, 0 ), ==>( 1, 1 ), ==>( 2, 2 ), ==>( 3, 3 )] )
% 19.75/20.14     ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 9, [ ~( product( X, Y, Z ) ), ~( product( X, T, Z ) ), =( T, Y ) ]
% 19.75/20.14     )
% 19.75/20.14  , clause( 54122, [ ~( product( X, Y, Z ) ), ~( product( X, T, Z ) ), =( T, 
% 19.75/20.14    Y ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 19.75/20.14    permutation( 0, [ ==>( 0, 0 ), ==>( 1, 1 ), ==>( 2, 2 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 11, [ =( inverse( inverse( X ) ), X ) ] )
% 19.75/20.14  , clause( 54124, [ =( inverse( inverse( X ) ), X ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 13, [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( X )
% 19.75/20.14     ) ] )
% 19.75/20.14  , clause( 54126, [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( 
% 19.75/20.14    X ) ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 ), ==>( 1, 
% 19.75/20.14    1 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 14, [ 'subgroup_member'( 'element_in_O2'( X, Y ) ), 
% 19.75/20.14    'subgroup_member'( Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  , clause( 54127, [ 'subgroup_member'( 'element_in_O2'( X, Y ) ), 
% 19.75/20.14    'subgroup_member'( Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 19.75/20.14     ), ==>( 1, 1 ), ==>( 2, 2 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 15, [ product( X, 'element_in_O2'( X, Y ), Y ), 'subgroup_member'( 
% 19.75/20.14    Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  , clause( 54128, [ product( X, 'element_in_O2'( X, Y ), Y ), 
% 19.75/20.14    'subgroup_member'( Y ), 'subgroup_member'( X ) ] )
% 19.75/20.14  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 19.75/20.14     ), ==>( 1, 1 ), ==>( 2, 2 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 16, [ 'subgroup_member'( b ) ] )
% 19.75/20.14  , clause( 54129, [ 'subgroup_member'( b ) ] )
% 19.75/20.14  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 17, [ product( b, inverse( a ), c ) ] )
% 19.75/20.14  , clause( 54130, [ product( b, inverse( a ), c ) ] )
% 19.75/20.14  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 18, [ product( a, c, d ) ] )
% 19.75/20.14  , clause( 54131, [ product( a, c, d ) ] )
% 19.75/20.14  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  subsumption(
% 19.75/20.14  clause( 19, [ ~( 'subgroup_member'( d ) ) ] )
% 19.75/20.14  , clause( 54132, [ ~( 'subgroup_member'( d ) ) ] )
% 19.75/20.14  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 19.75/20.14  
% 19.75/20.14  
% 19.75/20.14  resolution(
% 19.75/20.14  clause( 54275, [ 'subgroup_member'( inverse( b ) ) ] )
% 19.75/20.14  , clause( 13, [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( X
% 30.33/30.72     ) ) ] )
% 30.33/30.72  , 0, clause( 16, [ 'subgroup_member'( b ) ] )
% 30.33/30.72  , 0, substitution( 0, [ :=( X, b )] ), substitution( 1, [] )).
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  subsumption(
% 30.33/30.72  clause( 30, [ 'subgroup_member'( inverse( b ) ) ] )
% 30.33/30.72  , clause( 54275, [ 'subgroup_member'( inverse( b ) ) ] )
% 30.33/30.72  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  paramod(
% 30.33/30.72  clause( 54277, [ 'subgroup_member'( X ), ~( 'subgroup_member'( inverse( X )
% 30.33/30.72     ) ) ] )
% 30.33/30.72  , clause( 11, [ =( inverse( inverse( X ) ), X ) ] )
% 30.33/30.72  , 0, clause( 13, [ ~( 'subgroup_member'( X ) ), 'subgroup_member'( inverse( 
% 30.33/30.72    X ) ) ] )
% 30.33/30.72  , 1, 1, substitution( 0, [ :=( X, X )] ), substitution( 1, [ :=( X, inverse( 
% 30.33/30.72    X ) )] )).
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  subsumption(
% 30.33/30.72  clause( 31, [ ~( 'subgroup_member'( inverse( X ) ) ), 'subgroup_member'( X
% 30.33/30.72     ) ] )
% 30.33/30.72  , clause( 54277, [ 'subgroup_member'( X ), ~( 'subgroup_member'( inverse( X
% 30.33/30.72     ) ) ) ] )
% 30.33/30.72  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1, 
% 30.33/30.72    0 )] ) ).
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  resolution(
% 30.33/30.72  clause( 54278, [ ~( product( identity, X, Y ) ), =( X, Y ) ] )
% 30.33/30.72  , clause( 5, [ ~( product( X, Y, Z ) ), ~( product( X, Y, T ) ), =( Z, T )
% 30.33/30.72     ] )
% 30.33/30.72  , 0, clause( 0, [ product( identity, X, X ) ] )
% 30.33/30.72  , 0, substitution( 0, [ :=( X, identity ), :=( Y, X ), :=( Z, X ), :=( T, Y
% 30.33/30.72     )] ), substitution( 1, [ :=( X, X )] )).
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  subsumption(
% 30.33/30.72  clause( 38, [ ~( product( identity, X, Y ) ), =( X, Y ) ] )
% 30.33/30.72  , clause( 54278, [ ~( product( identity, X, Y ) ), =( X, Y ) ] )
% 30.33/30.72  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 30.33/30.72     ), ==>( 1, 1 )] ) ).
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  assignments is full
% 30.33/30.72  
% 30.33/30.72  Memory use:
% 30.33/30.72  
% 30.33/30.72  space for terms:        785341
% 30.33/30.72  space for clauses:      2234581
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  clauses generated:      248326
% 30.33/30.72  clauses kept:           54112
% 30.33/30.72  clauses selected:       941
% 30.33/30.72  clauses deleted:        6004
% 30.33/30.72  clauses inuse deleted:  84
% 30.33/30.72  
% 30.33/30.72  subsentry:          5646707
% 30.33/30.72  literals s-matched: 2255474
% 30.33/30.72  literals matched:   1518133
% 30.33/30.72  full subsumption:   889574
% 30.33/30.72  
% 30.33/30.72  checksum:           796315988
% 30.33/30.72  
% 30.33/30.72  
% 30.33/30.72  Bliksem ended
%------------------------------------------------------------------------------