TSTP Solution File: LCL101-1 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : LCL101-1 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n020.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 07:50:19 EDT 2022

% Result   : Unsatisfiable 0.77s 1.15s
% Output   : Refutation 0.77s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.12  % Problem  : LCL101-1 : TPTP v8.1.0. Released v1.0.0.
% 0.04/0.13  % Command  : bliksem %s
% 0.13/0.35  % Computer : n020.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit : 300
% 0.13/0.35  % DateTime : Sat Jul  2 23:42:00 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 0.77/1.14  *** allocated 10000 integers for termspace/termends
% 0.77/1.14  *** allocated 10000 integers for clauses
% 0.77/1.14  *** allocated 10000 integers for justifications
% 0.77/1.14  Bliksem 1.12
% 0.77/1.14  
% 0.77/1.14  
% 0.77/1.14  Automatic Strategy Selection
% 0.77/1.14  
% 0.77/1.14  Clauses:
% 0.77/1.14  [
% 0.77/1.14     [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), ~( 'is_a_theorem'( X ) ), 
% 0.77/1.14    'is_a_theorem'( Y ) ],
% 0.77/1.14     [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.14    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), T ), T )
% 0.77/1.14     ) ],
% 0.77/1.14     [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( equivalent( 
% 0.77/1.14    equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T ) ), X ) ) ) ]
% 0.77/1.14    ,
% 0.77/1.14     [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b ), c ), 
% 0.77/1.14    equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), c ) ) ) )
% 0.77/1.14     ) ]
% 0.77/1.14  ] .
% 0.77/1.14  
% 0.77/1.14  
% 0.77/1.14  percentage equality = 0.000000, percentage horn = 1.000000
% 0.77/1.14  This is a near-Horn, non-equality  problem
% 0.77/1.14  
% 0.77/1.14  
% 0.77/1.14  Options Used:
% 0.77/1.14  
% 0.77/1.14  useres =            1
% 0.77/1.14  useparamod =        0
% 0.77/1.14  useeqrefl =         0
% 0.77/1.14  useeqfact =         0
% 0.77/1.14  usefactor =         1
% 0.77/1.14  usesimpsplitting =  0
% 0.77/1.14  usesimpdemod =      0
% 0.77/1.15  usesimpres =        4
% 0.77/1.15  
% 0.77/1.15  resimpinuse      =  1000
% 0.77/1.15  resimpclauses =     20000
% 0.77/1.15  substype =          standard
% 0.77/1.15  backwardsubs =      1
% 0.77/1.15  selectoldest =      5
% 0.77/1.15  
% 0.77/1.15  litorderings [0] =  split
% 0.77/1.15  litorderings [1] =  liftord
% 0.77/1.15  
% 0.77/1.15  termordering =      none
% 0.77/1.15  
% 0.77/1.15  litapriori =        1
% 0.77/1.15  termapriori =       0
% 0.77/1.15  litaposteriori =    0
% 0.77/1.15  termaposteriori =   0
% 0.77/1.15  demodaposteriori =  0
% 0.77/1.15  ordereqreflfact =   0
% 0.77/1.15  
% 0.77/1.15  litselect =         negative
% 0.77/1.15  
% 0.77/1.15  maxweight =         30000
% 0.77/1.15  maxdepth =          30000
% 0.77/1.15  maxlength =         115
% 0.77/1.15  maxnrvars =         195
% 0.77/1.15  excuselevel =       0
% 0.77/1.15  increasemaxweight = 0
% 0.77/1.15  
% 0.77/1.15  maxselected =       10000000
% 0.77/1.15  maxnrclauses =      10000000
% 0.77/1.15  
% 0.77/1.15  showgenerated =    0
% 0.77/1.15  showkept =         0
% 0.77/1.15  showselected =     0
% 0.77/1.15  showdeleted =      0
% 0.77/1.15  showresimp =       1
% 0.77/1.15  showstatus =       2000
% 0.77/1.15  
% 0.77/1.15  prologoutput =     1
% 0.77/1.15  nrgoals =          5000000
% 0.77/1.15  totalproof =       1
% 0.77/1.15  
% 0.77/1.15  Symbols occurring in the translation:
% 0.77/1.15  
% 0.77/1.15  {}  [0, 0]      (w:1, o:2, a:1, s:1, b:0), 
% 0.77/1.15  .  [1, 2]      (w:1, o:23, a:1, s:1, b:0), 
% 0.77/1.15  !  [4, 1]      (w:1, o:17, a:1, s:1, b:0), 
% 0.77/1.15  =  [13, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 0.77/1.15  ==>  [14, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 0.77/1.15  equivalent  [41, 2]      (w:1, o:48, a:1, s:1, b:0), 
% 0.77/1.15  'is_a_theorem'  [42, 1]      (w:1, o:22, a:1, s:1, b:0), 
% 0.77/1.15  a  [45, 0]      (w:1, o:13, a:1, s:1, b:0), 
% 0.77/1.15  b  [46, 0]      (w:1, o:14, a:1, s:1, b:0), 
% 0.77/1.15  c  [47, 0]      (w:1, o:15, a:1, s:1, b:0), 
% 0.77/1.15  e  [48, 0]      (w:1, o:16, a:1, s:1, b:0).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  Starting Search:
% 0.77/1.15  
% 0.77/1.15  Resimplifying inuse:
% 0.77/1.15  
% 0.77/1.15  Bliksems!, er is een bewijs:
% 0.77/1.15  % SZS status Unsatisfiable
% 0.77/1.15  % SZS output start Refutation
% 0.77/1.15  
% 0.77/1.15  clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y )
% 0.77/1.15    , ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), T ), T )
% 0.77/1.15     ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 2, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 3, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b )
% 0.77/1.15    , c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), c
% 0.77/1.15     ) ) ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 4, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( equivalent( 
% 0.77/1.15    X, equivalent( equivalent( equivalent( equivalent( Y, Z ), equivalent( Y
% 0.77/1.15    , T ) ), equivalent( Z, T ) ), X ) ), U ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 5, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), T ), T ), U ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 6, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( T, U ), equivalent( T, W
% 0.77/1.15     ) ), equivalent( U, W ) ), V0 ), V0 ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 7, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( 
% 0.77/1.15    equivalent( equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W )
% 0.77/1.15     ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 8, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( T, 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( U, W ), equivalent( U, V0
% 0.77/1.15     ) ), equivalent( W, V0 ) ), T ) ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 9, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ) ), V0 ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 10, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( T, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( U, W ), equivalent( U, V0 ) ), equivalent( W, V0
% 0.77/1.15     ) ), T ) ) ), V1 ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 11, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W )
% 0.77/1.15     ), V0 ), V0 ) ), V1 ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 12, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 15, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U ) ), 
% 0.77/1.15    equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W, Y )
% 0.77/1.15     ) ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 16, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), equivalent( X
% 0.77/1.15    , Y ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 18, [ 'is_a_theorem'( Z ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Y ) ), Z ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 19, [ 'is_a_theorem'( equivalent( X, X ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 21, [ 'is_a_theorem'( Y ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( X, X ), Y ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 22, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), Z
% 0.77/1.15     ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y ) ), Z )
% 0.77/1.15     ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 24, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, T ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 25, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( T, T ) ), U ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 30, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ) ), equivalent( X, U ) ), U ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 63, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( Z, T ), equivalent( Z, U ) ), equivalent( T, U ) ), 
% 0.77/1.15    equivalent( equivalent( W, X ), equivalent( W, Y ) ) ) ), V0 ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 102, [ 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X, equivalent( Z
% 0.77/1.15    , T ) ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 906, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.77/1.15    Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z )
% 0.77/1.15     ) ) ) ] )
% 0.77/1.15  .
% 0.77/1.15  clause( 1010, [] )
% 0.77/1.15  .
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  % SZS output end Refutation
% 0.77/1.15  found a proof!
% 0.77/1.15  
% 0.77/1.15  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 0.77/1.15  
% 0.77/1.15  initialclauses(
% 0.77/1.15  [ clause( 1012, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), ~( 
% 0.77/1.15    'is_a_theorem'( X ) ), 'is_a_theorem'( Y ) ] )
% 0.77/1.15  , clause( 1013, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), T ), T ) ) ] )
% 0.77/1.15  , clause( 1014, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , clause( 1015, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a
% 0.77/1.15    , b ), c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e
% 0.77/1.15     ), c ) ) ) ) ) ] )
% 0.77/1.15  ] ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y )
% 0.77/1.15    , ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , clause( 1012, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), ~( 
% 0.77/1.15    'is_a_theorem'( X ) ), 'is_a_theorem'( Y ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 0.77/1.15     ), ==>( 1, 2 ), ==>( 2, 1 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), T ), T )
% 0.77/1.15     ) ] )
% 0.77/1.15  , clause( 1013, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), T ), T ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 2, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , clause( 1014, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 3, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b )
% 0.77/1.15    , c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), c
% 0.77/1.15     ) ) ) ) ) ] )
% 0.77/1.15  , clause( 1015, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a
% 0.77/1.15    , b ), c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e
% 0.77/1.15     ), c ) ) ) ) ) ] )
% 0.77/1.15  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1017, [ ~( 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ), X ) ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 2, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ), :=( Y, U )] ), substitution( 1, [ :=( X, X ), :=( Y, Y ), 
% 0.77/1.15    :=( Z, Z ), :=( T, T )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 4, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( equivalent( 
% 0.77/1.15    X, equivalent( equivalent( equivalent( equivalent( Y, Z ), equivalent( Y
% 0.77/1.15    , T ) ), equivalent( Z, T ) ), X ) ), U ) ) ) ] )
% 0.77/1.15  , clause( 1017, [ ~( 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ), X ) ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1019, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z ) ), 
% 0.77/1.15    equivalent( Y, Z ) ), T ), T ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), T ), T ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), T ), T ) ), :=( Y, U )] ), substitution( 1, [ :=( X, X ), :=( Y, Y )
% 0.77/1.15    , :=( Z, Z ), :=( T, T )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 5, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), T ), T ), U ) ) ) ] )
% 0.77/1.15  , clause( 1019, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z ) ), 
% 0.77/1.15    equivalent( Y, Z ) ), T ), T ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1020, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ), V0 ), V0 ) ) ) ] )
% 0.77/1.15  , clause( 5, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Z ) ), equivalent( Y, Z ) ), T ), T ), U ) ) ) ] )
% 0.77/1.15  , 1, clause( 2, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, T ), :=( Y, U ), :=( Z, W ), :=( T, V0 ), 
% 0.77/1.15    :=( U, equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    X, Z ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W )
% 0.77/1.15     ), V0 ), V0 ) ) )] ), substitution( 1, [ :=( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ), V0 ), V0 ) ), :=( Y, X ), :=( Z, Y ), :=( T, Z )] )
% 0.77/1.15    ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 6, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( T, U ), equivalent( T, W
% 0.77/1.15     ) ), equivalent( U, W ) ), V0 ), V0 ) ) ) ] )
% 0.77/1.15  , clause( 1020, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ), V0 ), V0 ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 )] ), permutation( 0, [ ==>( 0, 0 )] )
% 0.77/1.15     ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1021, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ) ) ) ] )
% 0.77/1.15  , clause( 4, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( X, equivalent( equivalent( equivalent( equivalent( Y, Z ), 
% 0.77/1.15    equivalent( Y, T ) ), equivalent( Z, T ) ), X ) ), U ) ) ) ] )
% 0.77/1.15  , 1, clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), T ), T ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ) ), :=( Y, X ), :=( Z, Y ), 
% 0.77/1.15    :=( T, Z ), :=( U, equivalent( equivalent( equivalent( equivalent( X, Y )
% 0.77/1.15    , equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( equivalent( 
% 0.77/1.15    equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W ) ) ) )] ), 
% 0.77/1.15    substitution( 1, [ :=( X, T ), :=( Y, U ), :=( Z, W ), :=( T, equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z ) ), 
% 0.77/1.15    equivalent( Y, Z ) ), equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ) ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 7, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( 
% 0.77/1.15    equivalent( equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W )
% 0.77/1.15     ) ) ) ] )
% 0.77/1.15  , clause( 1021, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1022, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, equivalent( equivalent( equivalent( equivalent( U, W ), 
% 0.77/1.15    equivalent( U, V0 ) ), equivalent( W, V0 ) ), T ) ) ) ) ] )
% 0.77/1.15  , clause( 4, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( X, equivalent( equivalent( equivalent( equivalent( Y, Z ), 
% 0.77/1.15    equivalent( Y, T ) ), equivalent( Z, T ) ), X ) ), U ) ) ) ] )
% 0.77/1.15  , 1, clause( 2, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, T ), :=( Y, U ), :=( Z, W ), :=( T, V0 ), 
% 0.77/1.15    :=( U, equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    X, Z ) ), equivalent( Y, Z ) ), equivalent( T, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( U, W ), equivalent( U, V0 ) ), equivalent( W, V0
% 0.77/1.15     ) ), T ) ) ) )] ), substitution( 1, [ :=( X, equivalent( T, equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( U, W ), equivalent( U, V0 ) ), 
% 0.77/1.15    equivalent( W, V0 ) ), T ) ) ), :=( Y, X ), :=( Z, Y ), :=( T, Z )] )
% 0.77/1.15    ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 8, [ 'is_a_theorem'( equivalent( equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), equivalent( T, 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( U, W ), equivalent( U, V0
% 0.77/1.15     ) ), equivalent( W, V0 ) ), T ) ) ) ) ] )
% 0.77/1.15  , clause( 1022, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, equivalent( equivalent( equivalent( equivalent( U, W ), 
% 0.77/1.15    equivalent( U, V0 ) ), equivalent( W, V0 ) ), T ) ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 )] ), permutation( 0, [ ==>( 0, 0 )] )
% 0.77/1.15     ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1024, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ) ), V0 ) ) ), 'is_a_theorem'( V0 ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 7, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ) ) ), :=( Y, V0 )] ), substitution( 1, [ :=( X, X ), 
% 0.77/1.15    :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U, U ), :=( W, W )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 9, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ) ), V0 ) ) ) ] )
% 0.77/1.15  , clause( 1024, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( equivalent( equivalent( T, U ), equivalent( T, W ) ), 
% 0.77/1.15    equivalent( U, W ) ) ), V0 ) ) ), 'is_a_theorem'( V0 ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1
% 0.77/1.15    , 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1026, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( T, equivalent( equivalent( equivalent( equivalent( U, W )
% 0.77/1.15    , equivalent( U, V0 ) ), equivalent( W, V0 ) ), T ) ) ), V1 ) ) ), 
% 0.77/1.15    'is_a_theorem'( V1 ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 8, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, equivalent( equivalent( equivalent( equivalent( U, W ), 
% 0.77/1.15    equivalent( U, V0 ) ), equivalent( W, V0 ) ), T ) ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, equivalent( equivalent( equivalent( equivalent( U, W ), 
% 0.77/1.15    equivalent( U, V0 ) ), equivalent( W, V0 ) ), T ) ) ) ), :=( Y, V1 )] ), 
% 0.77/1.15    substitution( 1, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 10, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( T, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( U, W ), equivalent( U, V0 ) ), equivalent( W, V0
% 0.77/1.15     ) ), T ) ) ), V1 ) ) ) ] )
% 0.77/1.15  , clause( 1026, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( T, equivalent( equivalent( equivalent( equivalent( U, W )
% 0.77/1.15    , equivalent( U, V0 ) ), equivalent( W, V0 ) ), T ) ) ), V1 ) ) ), 
% 0.77/1.15    'is_a_theorem'( V1 ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 ), :=( V1, V1 )] ), permutation( 0, [ ==>( 
% 0.77/1.15    0, 1 ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1028, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( equivalent( equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ), V0 ), V0 ) ), V1 ) ) ), 
% 0.77/1.15    'is_a_theorem'( V1 ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 6, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ), V0 ), V0 ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ), V0 ), V0 ) ) ), :=( Y, V1 )] )
% 0.77/1.15    , substitution( 1, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( 
% 0.77/1.15    U, U ), :=( W, W ), :=( V0, V0 )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 11, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W )
% 0.77/1.15     ), V0 ), V0 ) ), V1 ) ) ) ] )
% 0.77/1.15  , clause( 1028, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( equivalent( equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ), V0 ), V0 ) ), V1 ) ) ), 
% 0.77/1.15    'is_a_theorem'( V1 ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 ), :=( V1, V1 )] ), permutation( 0, [ ==>( 
% 0.77/1.15    0, 1 ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1029, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y )
% 0.77/1.15    , equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , clause( 9, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ) ), V0 ) ) ) ] )
% 0.77/1.15  , 1, clause( 1, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), T ), T ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, T ), :=( Y, U ), :=( Z, W ), :=( T, X ), 
% 0.77/1.15    :=( U, Y ), :=( W, Z ), :=( V0, equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Z ) ), equivalent( Y, Z ) ) )] ), substitution( 1, [ 
% 0.77/1.15    :=( X, T ), :=( Y, U ), :=( Z, W ), :=( T, equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 12, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , clause( 1029, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1030, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U ) ), 
% 0.77/1.15    equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W, Y )
% 0.77/1.15     ) ) ) ) ] )
% 0.77/1.15  , clause( 10, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( T, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( U, W ), equivalent( U, V0 ) ), equivalent( W, V0
% 0.77/1.15     ) ), T ) ) ), V1 ) ) ) ] )
% 0.77/1.15  , 1, clause( 12, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, W ), :=( Y, X ), :=( Z, Y ), :=( T, 
% 0.77/1.15    equivalent( equivalent( W, X ), equivalent( W, Y ) ) ), :=( U, Z ), :=( W
% 0.77/1.15    , T ), :=( V0, U ), :=( V1, equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U ) ), 
% 0.77/1.15    equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W, Y )
% 0.77/1.15     ) ) ) )] ), substitution( 1, [ :=( X, equivalent( equivalent( W, X ), 
% 0.77/1.15    equivalent( W, Y ) ) ), :=( Y, equivalent( X, Y ) ), :=( Z, equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U ) ), 
% 0.77/1.15    equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W, Y )
% 0.77/1.15     ) ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 15, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U ) ), 
% 0.77/1.15    equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W, Y )
% 0.77/1.15     ) ) ) ) ] )
% 0.77/1.15  , clause( 1030, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U
% 0.77/1.15     ) ), equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W
% 0.77/1.15    , Y ) ) ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1031, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    X, Y ) ) ) ] )
% 0.77/1.15  , clause( 9, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( T, U ), 
% 0.77/1.15    equivalent( T, W ) ), equivalent( U, W ) ) ), V0 ) ) ) ] )
% 0.77/1.15  , 1, clause( 12, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, Z ), :=( Y, X ), :=( Z, Y ), :=( T, Z ), 
% 0.77/1.15    :=( U, X ), :=( W, Y ), :=( V0, equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Y ) ) )] ), substitution( 1, [ :=( X, equivalent( 
% 0.77/1.15    equivalent( Z, X ), equivalent( Z, Y ) ) ), :=( Y, equivalent( X, Y ) ), 
% 0.77/1.15    :=( Z, equivalent( X, Y ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 16, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), equivalent( X
% 0.77/1.15    , Y ) ) ) ] )
% 0.77/1.15  , clause( 1031, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Y ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 0.77/1.15     )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1033, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Y ) ), Z ) ) ), 'is_a_theorem'( Z ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 16, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Y ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    X, Y ) ) ), :=( Y, Z )] ), substitution( 1, [ :=( X, X ), :=( Y, Y )] )
% 0.77/1.15    ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 18, [ 'is_a_theorem'( Z ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Y ) ), Z ) ) ) ] )
% 0.77/1.15  , clause( 1033, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( X
% 0.77/1.15    , Y ), equivalent( X, Y ) ), Z ) ) ), 'is_a_theorem'( Z ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 1 ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1034, [ 'is_a_theorem'( equivalent( X, X ) ) ] )
% 0.77/1.15  , clause( 18, [ 'is_a_theorem'( Z ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Y ) ), Z ) ) ) ] )
% 0.77/1.15  , 1, clause( 12, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, Y ), :=( Y, X ), :=( Z, equivalent( X, X ) )] )
% 0.77/1.15    , substitution( 1, [ :=( X, Y ), :=( Y, X ), :=( Z, X )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 19, [ 'is_a_theorem'( equivalent( X, X ) ) ] )
% 0.77/1.15  , clause( 1034, [ 'is_a_theorem'( equivalent( X, X ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1036, [ ~( 'is_a_theorem'( equivalent( equivalent( X, X ), Y ) ) )
% 0.77/1.15    , 'is_a_theorem'( Y ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 19, [ 'is_a_theorem'( equivalent( X, X ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( X, X ) ), :=( Y, Y )] ), 
% 0.77/1.15    substitution( 1, [ :=( X, X )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 21, [ 'is_a_theorem'( Y ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( X, X ), Y ) ) ) ] )
% 0.77/1.15  , clause( 1036, [ ~( 'is_a_theorem'( equivalent( equivalent( X, X ), Y ) )
% 0.77/1.15     ), 'is_a_theorem'( Y ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 1
% 0.77/1.15     ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1037, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y )
% 0.77/1.15    , Z ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y ) ), 
% 0.77/1.15    Z ) ) ) ] )
% 0.77/1.15  , clause( 11, [ 'is_a_theorem'( V1 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( T, U ), equivalent( T, W ) ), equivalent( U, W )
% 0.77/1.15     ), V0 ), V0 ) ), V1 ) ) ) ] )
% 0.77/1.15  , 1, clause( 12, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( X, Z ) ), equivalent( Y, Z ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( T, X ), equivalent( 
% 0.77/1.15    T, Y ) ) ), :=( Y, equivalent( X, Y ) ), :=( Z, Z ), :=( T, T ), :=( U, X
% 0.77/1.15     ), :=( W, Y ), :=( V0, equivalent( equivalent( equivalent( T, X ), 
% 0.77/1.15    equivalent( T, Y ) ), Z ) ), :=( V1, equivalent( equivalent( equivalent( 
% 0.77/1.15    X, Y ), Z ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y
% 0.77/1.15     ) ), Z ) ) )] ), substitution( 1, [ :=( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( T, X ), equivalent( T, Y ) ), equivalent( X, Y )
% 0.77/1.15     ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y ) ), Z )
% 0.77/1.15     ) ), :=( Y, equivalent( equivalent( X, Y ), Z ) ), :=( Z, equivalent( 
% 0.77/1.15    equivalent( equivalent( T, X ), equivalent( T, Y ) ), Z ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 22, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), Z
% 0.77/1.15     ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y ) ), Z )
% 0.77/1.15     ) ) ] )
% 0.77/1.15  , clause( 1037, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), Z ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y ) )
% 0.77/1.15    , Z ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1038, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, T ) ) ) ] )
% 0.77/1.15  , clause( 21, [ 'is_a_theorem'( Y ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( X, X ), Y ) ) ) ] )
% 0.77/1.15  , 1, clause( 2, [ 'is_a_theorem'( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ), X ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, T ), :=( Y, equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( T, T ) ) )] ), substitution( 1, [ :=( X, equivalent( T, T
% 0.77/1.15     ) ), :=( Y, X ), :=( Z, Y ), :=( T, Z )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 24, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, T ) ) ) ] )
% 0.77/1.15  , clause( 1038, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, T ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1040, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( T, T ) ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 24, [ 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, T ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z ) ), 
% 0.77/1.15    equivalent( T, T ) ) ), :=( Y, U )] ), substitution( 1, [ :=( X, X ), 
% 0.77/1.15    :=( Y, Y ), :=( Z, Z ), :=( T, T )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 25, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( T, T ) ), U ) ) ) ] )
% 0.77/1.15  , clause( 1040, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( X, Z ) ), equivalent( Y, Z )
% 0.77/1.15     ), equivalent( T, T ) ), U ) ) ), 'is_a_theorem'( U ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1041, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ) ), equivalent( X, U ) ), U ) ) ] )
% 0.77/1.15  , clause( 5, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( X, Z ) ), equivalent( Y, Z ) ), T ), T ), U ) ) ) ] )
% 0.77/1.15  , 1, clause( 22, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), Z ), equivalent( equivalent( equivalent( T, X ), equivalent( T, Y ) )
% 0.77/1.15    , Z ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, Y ), :=( Y, Z ), :=( Z, T ), :=( T, U ), 
% 0.77/1.15    :=( U, equivalent( equivalent( equivalent( X, equivalent( equivalent( 
% 0.77/1.15    equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T ) ) ), 
% 0.77/1.15    equivalent( X, U ) ), U ) )] ), substitution( 1, [ :=( X, equivalent( 
% 0.77/1.15    equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), equivalent( Z, T )
% 0.77/1.15     ) ), :=( Y, U ), :=( Z, U ), :=( T, X )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 30, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ) ), equivalent( X, U ) ), U ) ) ] )
% 0.77/1.15  , clause( 1041, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ) ), equivalent( X, U ) ), U ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1043, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), equivalent( equivalent( equivalent( equivalent( Z, T ), equivalent( Z
% 0.77/1.15    , U ) ), equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( 
% 0.77/1.15    W, Y ) ) ) ), V0 ) ) ), 'is_a_theorem'( V0 ) ] )
% 0.77/1.15  , clause( 0, [ ~( 'is_a_theorem'( equivalent( X, Y ) ) ), 'is_a_theorem'( Y
% 0.77/1.15     ), ~( 'is_a_theorem'( X ) ) ] )
% 0.77/1.15  , 2, clause( 15, [ 'is_a_theorem'( equivalent( equivalent( X, Y ), 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U
% 0.77/1.15     ) ), equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W
% 0.77/1.15    , Y ) ) ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( equivalent( X, Y ), equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( Z, T ), equivalent( Z, U ) ), 
% 0.77/1.15    equivalent( T, U ) ), equivalent( equivalent( W, X ), equivalent( W, Y )
% 0.77/1.15     ) ) ) ), :=( Y, V0 )] ), substitution( 1, [ :=( X, X ), :=( Y, Y ), :=( 
% 0.77/1.15    Z, Z ), :=( T, T ), :=( U, U ), :=( W, W )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 63, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( Z, T ), equivalent( Z, U ) ), equivalent( T, U ) ), 
% 0.77/1.15    equivalent( equivalent( W, X ), equivalent( W, Y ) ) ) ), V0 ) ) ) ] )
% 0.77/1.15  , clause( 1043, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( X
% 0.77/1.15    , Y ), equivalent( equivalent( equivalent( equivalent( Z, T ), equivalent( 
% 0.77/1.15    Z, U ) ), equivalent( T, U ) ), equivalent( equivalent( W, X ), 
% 0.77/1.15    equivalent( W, Y ) ) ) ), V0 ) ) ), 'is_a_theorem'( V0 ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T ), :=( U
% 0.77/1.15    , U ), :=( W, W ), :=( V0, V0 )] ), permutation( 0, [ ==>( 0, 1 ), ==>( 1
% 0.77/1.15    , 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1044, [ 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X, equivalent( Z
% 0.77/1.15    , T ) ) ) ) ] )
% 0.77/1.15  , clause( 25, [ 'is_a_theorem'( U ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( equivalent( equivalent( X, Y ), equivalent( X, Z
% 0.77/1.15     ) ), equivalent( Y, Z ) ), equivalent( T, T ) ), U ) ) ) ] )
% 0.77/1.15  , 1, clause( 30, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, 
% 0.77/1.15    equivalent( equivalent( equivalent( Y, Z ), equivalent( Y, T ) ), 
% 0.77/1.15    equivalent( Z, T ) ) ), equivalent( X, U ) ), U ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, X ), :=( Y, equivalent( equivalent( Y, Z ), 
% 0.77/1.15    equivalent( Y, T ) ) ), :=( Z, equivalent( Z, T ) ), :=( T, equivalent( 
% 0.77/1.15    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.77/1.15    equivalent( X, equivalent( Z, T ) ) ) ), :=( U, equivalent( equivalent( X
% 0.77/1.15    , equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X, 
% 0.77/1.15    equivalent( Z, T ) ) ) )] ), substitution( 1, [ :=( X, equivalent( 
% 0.77/1.15    equivalent( X, equivalent( equivalent( Y, Z ), equivalent( Y, T ) ) ), 
% 0.77/1.15    equivalent( X, equivalent( Z, T ) ) ) ), :=( Y, Y ), :=( Z, Z ), :=( T, T
% 0.77/1.15     ), :=( U, equivalent( equivalent( X, equivalent( equivalent( Y, Z ), 
% 0.77/1.15    equivalent( Y, T ) ) ), equivalent( X, equivalent( Z, T ) ) ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 102, [ 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X, equivalent( Z
% 0.77/1.15    , T ) ) ) ) ] )
% 0.77/1.15  , clause( 1044, [ 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X, equivalent( Z
% 0.77/1.15    , T ) ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1045, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y )
% 0.77/1.15    , Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z
% 0.77/1.15     ) ) ) ) ] )
% 0.77/1.15  , clause( 63, [ 'is_a_theorem'( V0 ), ~( 'is_a_theorem'( equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), equivalent( equivalent( equivalent( 
% 0.77/1.15    equivalent( Z, T ), equivalent( Z, U ) ), equivalent( T, U ) ), 
% 0.77/1.15    equivalent( equivalent( W, X ), equivalent( W, Y ) ) ) ), V0 ) ) ) ] )
% 0.77/1.15  , 1, clause( 102, [ 'is_a_theorem'( equivalent( equivalent( X, equivalent( 
% 0.77/1.15    equivalent( Y, Z ), equivalent( Y, T ) ) ), equivalent( X, equivalent( Z
% 0.77/1.15    , T ) ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [ :=( X, equivalent( X, Y ) ), :=( Y, Z ), :=( Z, X )
% 0.77/1.15    , :=( T, T ), :=( U, Y ), :=( W, equivalent( X, T ) ), :=( V0, equivalent( 
% 0.77/1.15    equivalent( equivalent( X, Y ), Z ), equivalent( equivalent( T, Y ), 
% 0.77/1.15    equivalent( equivalent( X, T ), Z ) ) ) )] ), substitution( 1, [ :=( X, 
% 0.77/1.15    equivalent( equivalent( X, Y ), Z ) ), :=( Y, equivalent( equivalent( X, 
% 0.77/1.15    T ), equivalent( X, Y ) ) ), :=( Z, equivalent( T, Y ) ), :=( T, 
% 0.77/1.15    equivalent( equivalent( X, T ), Z ) )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 906, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y ), 
% 0.77/1.15    Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), Z )
% 0.77/1.15     ) ) ) ] )
% 0.77/1.15  , clause( 1045, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, Y
% 0.77/1.15     ), Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T ), 
% 0.77/1.15    Z ) ) ) ) ] )
% 0.77/1.15  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z ), :=( T, T )] ), 
% 0.77/1.15    permutation( 0, [ ==>( 0, 0 )] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  resolution(
% 0.77/1.15  clause( 1046, [] )
% 0.77/1.15  , clause( 3, [ ~( 'is_a_theorem'( equivalent( equivalent( equivalent( a, b
% 0.77/1.15     ), c ), equivalent( equivalent( e, b ), equivalent( equivalent( a, e ), 
% 0.77/1.15    c ) ) ) ) ) ] )
% 0.77/1.15  , 0, clause( 906, [ 'is_a_theorem'( equivalent( equivalent( equivalent( X, 
% 0.77/1.15    Y ), Z ), equivalent( equivalent( T, Y ), equivalent( equivalent( X, T )
% 0.77/1.15    , Z ) ) ) ) ] )
% 0.77/1.15  , 0, substitution( 0, [] ), substitution( 1, [ :=( X, a ), :=( Y, b ), :=( 
% 0.77/1.15    Z, c ), :=( T, e )] )).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  subsumption(
% 0.77/1.15  clause( 1010, [] )
% 0.77/1.15  , clause( 1046, [] )
% 0.77/1.15  , substitution( 0, [] ), permutation( 0, [] ) ).
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  end.
% 0.77/1.15  
% 0.77/1.15  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 0.77/1.15  
% 0.77/1.15  Memory use:
% 0.77/1.15  
% 0.77/1.15  space for terms:        26692
% 0.77/1.15  space for clauses:      130795
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  clauses generated:      3123
% 0.77/1.15  clauses kept:           1011
% 0.77/1.15  clauses selected:       186
% 0.77/1.15  clauses deleted:        9
% 0.77/1.15  clauses inuse deleted:  8
% 0.77/1.15  
% 0.77/1.15  subsentry:          2345
% 0.77/1.15  literals s-matched: 2121
% 0.77/1.15  literals matched:   2121
% 0.77/1.15  full subsumption:   0
% 0.77/1.15  
% 0.77/1.15  checksum:           -1255613677
% 0.77/1.15  
% 0.77/1.15  
% 0.77/1.15  Bliksem ended
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