TSTP Solution File: SET705+4 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : SET705+4 : TPTP v8.1.0. Released v2.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n003.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 : Mon Jul 18 22:51:31 EDT 2022

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

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.11  % Problem  : SET705+4 : TPTP v8.1.0. Released v2.2.0.
% 0.03/0.12  % Command  : bliksem %s
% 0.12/0.33  % Computer : n003.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 : Sat Jul  9 23:07:14 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 0.69/1.08  *** allocated 10000 integers for termspace/termends
% 0.69/1.08  *** allocated 10000 integers for clauses
% 0.69/1.08  *** allocated 10000 integers for justifications
% 0.69/1.08  Bliksem 1.12
% 0.69/1.08  
% 0.69/1.08  
% 0.69/1.08  Automatic Strategy Selection
% 0.69/1.08  
% 0.69/1.08  
% 0.69/1.08  Clauses:
% 0.69/1.08  
% 0.69/1.08  { ! subset( X, Y ), ! member( Z, X ), member( Z, Y ) }.
% 0.69/1.08  { ! member( skol1( Z, Y ), Y ), subset( X, Y ) }.
% 0.69/1.08  { member( skol1( X, Y ), X ), subset( X, Y ) }.
% 0.69/1.08  { ! equal_set( X, Y ), subset( X, Y ) }.
% 0.69/1.08  { ! equal_set( X, Y ), subset( Y, X ) }.
% 0.69/1.08  { ! subset( X, Y ), ! subset( Y, X ), equal_set( X, Y ) }.
% 0.69/1.08  { ! member( X, power_set( Y ) ), subset( X, Y ) }.
% 0.69/1.08  { ! subset( X, Y ), member( X, power_set( Y ) ) }.
% 0.69/1.08  { ! member( X, intersection( Y, Z ) ), member( X, Y ) }.
% 0.69/1.08  { ! member( X, intersection( Y, Z ) ), member( X, Z ) }.
% 0.69/1.08  { ! member( X, Y ), ! member( X, Z ), member( X, intersection( Y, Z ) ) }.
% 0.69/1.08  { ! member( X, union( Y, Z ) ), member( X, Y ), member( X, Z ) }.
% 0.69/1.08  { ! member( X, Y ), member( X, union( Y, Z ) ) }.
% 0.69/1.08  { ! member( X, Z ), member( X, union( Y, Z ) ) }.
% 0.69/1.08  { ! member( X, empty_set ) }.
% 0.69/1.08  { ! member( X, difference( Z, Y ) ), member( X, Z ) }.
% 0.69/1.09  { ! member( X, difference( Z, Y ) ), ! member( X, Y ) }.
% 0.69/1.09  { ! member( X, Z ), member( X, Y ), member( X, difference( Z, Y ) ) }.
% 0.69/1.09  { ! member( X, singleton( Y ) ), X = Y }.
% 0.69/1.09  { ! X = Y, member( X, singleton( Y ) ) }.
% 0.69/1.09  { ! member( X, unordered_pair( Y, Z ) ), X = Y, X = Z }.
% 0.69/1.09  { ! X = Y, member( X, unordered_pair( Y, Z ) ) }.
% 0.69/1.09  { ! X = Z, member( X, unordered_pair( Y, Z ) ) }.
% 0.69/1.09  { ! member( X, sum( Y ) ), member( skol2( Z, Y ), Y ) }.
% 0.69/1.09  { ! member( X, sum( Y ) ), member( X, skol2( X, Y ) ) }.
% 0.69/1.09  { ! member( Z, Y ), ! member( X, Z ), member( X, sum( Y ) ) }.
% 0.69/1.09  { ! member( X, product( Y ) ), ! member( Z, Y ), member( X, Z ) }.
% 0.69/1.09  { member( skol3( Z, Y ), Y ), member( X, product( Y ) ) }.
% 0.69/1.09  { ! member( X, skol3( X, Y ) ), member( X, product( Y ) ) }.
% 0.69/1.09  { ! member( skol4, power_set( skol4 ) ) }.
% 0.69/1.09  
% 0.69/1.09  percentage equality = 0.090909, percentage horn = 0.833333
% 0.69/1.09  This is a problem with some equality
% 0.69/1.09  
% 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 =        1
% 0.69/1.09  useeqrefl =         1
% 0.69/1.09  useeqfact =         1
% 0.69/1.09  usefactor =         1
% 0.69/1.09  usesimpsplitting =  0
% 0.69/1.09  usesimpdemod =      5
% 0.69/1.09  usesimpres =        3
% 0.69/1.09  
% 0.69/1.09  resimpinuse      =  1000
% 0.69/1.09  resimpclauses =     20000
% 0.69/1.09  substype =          eqrewr
% 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] =  extend the termordering, first sorting on arguments
% 0.69/1.09  
% 0.69/1.09  termordering =      kbo
% 0.69/1.09  
% 0.69/1.09  litapriori =        0
% 0.69/1.09  termapriori =       1
% 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 =         negord
% 0.69/1.09  
% 0.69/1.09  maxweight =         15
% 0.69/1.09  maxdepth =          30000
% 0.69/1.09  maxlength =         115
% 0.69/1.09  maxnrvars =         195
% 0.69/1.09  excuselevel =       1
% 0.69/1.09  increasemaxweight = 1
% 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 =     0
% 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:22, a:1, s:1, b:0), 
% 0.69/1.09  !  [4, 1]      (w:0, o:13, 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  subset  [37, 2]      (w:1, o:46, a:1, s:1, b:0), 
% 0.69/1.09  member  [39, 2]      (w:1, o:47, a:1, s:1, b:0), 
% 0.69/1.09  equal_set  [40, 2]      (w:1, o:49, a:1, s:1, b:0), 
% 0.69/1.09  power_set  [41, 1]      (w:1, o:18, a:1, s:1, b:0), 
% 0.69/1.09  intersection  [42, 2]      (w:1, o:50, a:1, s:1, b:0), 
% 0.69/1.09  union  [43, 2]      (w:1, o:51, a:1, s:1, b:0), 
% 0.69/1.09  empty_set  [44, 0]      (w:1, o:9, a:1, s:1, b:0), 
% 0.69/1.09  difference  [46, 2]      (w:1, o:48, a:1, s:1, b:0), 
% 0.69/1.09  singleton  [47, 1]      (w:1, o:19, a:1, s:1, b:0), 
% 0.69/1.09  unordered_pair  [48, 2]      (w:1, o:52, a:1, s:1, b:0), 
% 0.69/1.09  sum  [49, 1]      (w:1, o:20, a:1, s:1, b:0), 
% 0.69/1.09  product  [51, 1]      (w:1, o:21, a:1, s:1, b:0), 
% 0.69/1.09  skol1  [52, 2]      (w:1, o:53, a:1, s:1, b:1), 
% 0.69/1.09  skol2  [53, 2]      (w:1, o:54, a:1, s:1, b:1), 
% 0.69/1.09  skol3  [54, 2]      (w:1, o:55, a:1, s:1, b:1), 
% 0.69/1.09  skol4  [55, 0]      (w:1, o:12, a:1, s:1, b:1).
% 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 Theorem
% 0.69/1.09  % SZS output start Refutation
% 0.69/1.09  
% 0.69/1.09  (1) {G0,W8,D3,L2,V3,M2} I { ! member( skol1( Z, Y ), Y ), subset( X, Y )
% 0.69/1.09     }.
% 0.69/1.09  (2) {G0,W8,D3,L2,V2,M2} I { member( skol1( X, Y ), X ), subset( X, Y ) }.
% 0.69/1.09  (7) {G0,W7,D3,L2,V2,M2} I { ! subset( X, Y ), member( X, power_set( Y ) )
% 0.69/1.09     }.
% 0.69/1.09  (29) {G0,W4,D3,L1,V0,M1} I { ! member( skol4, power_set( skol4 ) ) }.
% 0.69/1.09  (61) {G1,W6,D2,L2,V2,M2} R(2,1) { subset( X, X ), subset( Y, X ) }.
% 0.69/1.09  (69) {G2,W3,D2,L1,V1,M1} F(61) { subset( X, X ) }.
% 0.69/1.09  (113) {G3,W0,D0,L0,V0,M0} R(7,29);r(69) {  }.
% 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  
% 0.69/1.09  Unprocessed initial clauses:
% 0.69/1.09  
% 0.69/1.09  (115) {G0,W9,D2,L3,V3,M3}  { ! subset( X, Y ), ! member( Z, X ), member( Z
% 0.69/1.09    , Y ) }.
% 0.69/1.09  (116) {G0,W8,D3,L2,V3,M2}  { ! member( skol1( Z, Y ), Y ), subset( X, Y )
% 0.69/1.09     }.
% 0.69/1.09  (117) {G0,W8,D3,L2,V2,M2}  { member( skol1( X, Y ), X ), subset( X, Y ) }.
% 0.69/1.09  (118) {G0,W6,D2,L2,V2,M2}  { ! equal_set( X, Y ), subset( X, Y ) }.
% 0.69/1.09  (119) {G0,W6,D2,L2,V2,M2}  { ! equal_set( X, Y ), subset( Y, X ) }.
% 0.69/1.09  (120) {G0,W9,D2,L3,V2,M3}  { ! subset( X, Y ), ! subset( Y, X ), equal_set
% 0.69/1.09    ( X, Y ) }.
% 0.69/1.09  (121) {G0,W7,D3,L2,V2,M2}  { ! member( X, power_set( Y ) ), subset( X, Y )
% 0.69/1.09     }.
% 0.69/1.09  (122) {G0,W7,D3,L2,V2,M2}  { ! subset( X, Y ), member( X, power_set( Y ) )
% 0.69/1.09     }.
% 0.69/1.09  (123) {G0,W8,D3,L2,V3,M2}  { ! member( X, intersection( Y, Z ) ), member( X
% 0.69/1.09    , Y ) }.
% 0.69/1.09  (124) {G0,W8,D3,L2,V3,M2}  { ! member( X, intersection( Y, Z ) ), member( X
% 0.69/1.09    , Z ) }.
% 0.69/1.09  (125) {G0,W11,D3,L3,V3,M3}  { ! member( X, Y ), ! member( X, Z ), member( X
% 0.69/1.09    , intersection( Y, Z ) ) }.
% 0.69/1.09  (126) {G0,W11,D3,L3,V3,M3}  { ! member( X, union( Y, Z ) ), member( X, Y )
% 0.69/1.09    , member( X, Z ) }.
% 0.69/1.09  (127) {G0,W8,D3,L2,V3,M2}  { ! member( X, Y ), member( X, union( Y, Z ) )
% 0.69/1.09     }.
% 0.69/1.09  (128) {G0,W8,D3,L2,V3,M2}  { ! member( X, Z ), member( X, union( Y, Z ) )
% 0.69/1.09     }.
% 0.69/1.09  (129) {G0,W3,D2,L1,V1,M1}  { ! member( X, empty_set ) }.
% 0.69/1.09  (130) {G0,W8,D3,L2,V3,M2}  { ! member( X, difference( Z, Y ) ), member( X, 
% 0.69/1.09    Z ) }.
% 0.69/1.09  (131) {G0,W8,D3,L2,V3,M2}  { ! member( X, difference( Z, Y ) ), ! member( X
% 0.69/1.09    , Y ) }.
% 0.69/1.09  (132) {G0,W11,D3,L3,V3,M3}  { ! member( X, Z ), member( X, Y ), member( X, 
% 0.69/1.09    difference( Z, Y ) ) }.
% 0.69/1.09  (133) {G0,W7,D3,L2,V2,M2}  { ! member( X, singleton( Y ) ), X = Y }.
% 0.69/1.09  (134) {G0,W7,D3,L2,V2,M2}  { ! X = Y, member( X, singleton( Y ) ) }.
% 0.69/1.09  (135) {G0,W11,D3,L3,V3,M3}  { ! member( X, unordered_pair( Y, Z ) ), X = Y
% 0.69/1.09    , X = Z }.
% 0.69/1.09  (136) {G0,W8,D3,L2,V3,M2}  { ! X = Y, member( X, unordered_pair( Y, Z ) )
% 0.69/1.09     }.
% 0.69/1.09  (137) {G0,W8,D3,L2,V3,M2}  { ! X = Z, member( X, unordered_pair( Y, Z ) )
% 0.69/1.09     }.
% 0.69/1.09  (138) {G0,W9,D3,L2,V3,M2}  { ! member( X, sum( Y ) ), member( skol2( Z, Y )
% 0.69/1.09    , Y ) }.
% 0.69/1.09  (139) {G0,W9,D3,L2,V2,M2}  { ! member( X, sum( Y ) ), member( X, skol2( X, 
% 0.69/1.09    Y ) ) }.
% 0.69/1.09  (140) {G0,W10,D3,L3,V3,M3}  { ! member( Z, Y ), ! member( X, Z ), member( X
% 0.69/1.09    , sum( Y ) ) }.
% 0.69/1.09  (141) {G0,W10,D3,L3,V3,M3}  { ! member( X, product( Y ) ), ! member( Z, Y )
% 0.69/1.09    , member( X, Z ) }.
% 0.69/1.09  (142) {G0,W9,D3,L2,V3,M2}  { member( skol3( Z, Y ), Y ), member( X, product
% 0.69/1.09    ( Y ) ) }.
% 0.69/1.09  (143) {G0,W9,D3,L2,V2,M2}  { ! member( X, skol3( X, Y ) ), member( X, 
% 0.69/1.09    product( Y ) ) }.
% 0.69/1.09  (144) {G0,W4,D3,L1,V0,M1}  { ! member( skol4, power_set( skol4 ) ) }.
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Total Proof:
% 0.69/1.09  
% 0.69/1.09  subsumption: (1) {G0,W8,D3,L2,V3,M2} I { ! member( skol1( Z, Y ), Y ), 
% 0.69/1.09    subset( X, Y ) }.
% 0.69/1.09  parent0: (116) {G0,W8,D3,L2,V3,M2}  { ! member( skol1( Z, Y ), Y ), subset
% 0.69/1.09    ( X, Y ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := X
% 0.69/1.09     Y := Y
% 0.69/1.09     Z := Z
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09     0 ==> 0
% 0.69/1.09     1 ==> 1
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  subsumption: (2) {G0,W8,D3,L2,V2,M2} I { member( skol1( X, Y ), X ), subset
% 0.69/1.09    ( X, Y ) }.
% 0.69/1.09  parent0: (117) {G0,W8,D3,L2,V2,M2}  { member( skol1( X, Y ), X ), subset( X
% 0.69/1.09    , Y ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := X
% 0.69/1.09     Y := Y
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09     0 ==> 0
% 0.69/1.09     1 ==> 1
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  subsumption: (7) {G0,W7,D3,L2,V2,M2} I { ! subset( X, Y ), member( X, 
% 0.69/1.09    power_set( Y ) ) }.
% 0.69/1.09  parent0: (122) {G0,W7,D3,L2,V2,M2}  { ! subset( X, Y ), member( X, 
% 0.69/1.09    power_set( Y ) ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := X
% 0.69/1.09     Y := Y
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09     0 ==> 0
% 0.69/1.09     1 ==> 1
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  subsumption: (29) {G0,W4,D3,L1,V0,M1} I { ! member( skol4, power_set( skol4
% 0.69/1.09     ) ) }.
% 0.69/1.09  parent0: (144) {G0,W4,D3,L1,V0,M1}  { ! member( skol4, power_set( skol4 ) )
% 0.69/1.09     }.
% 0.69/1.09  substitution0:
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09     0 ==> 0
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  resolution: (159) {G1,W6,D2,L2,V2,M2}  { subset( Y, X ), subset( X, X ) }.
% 0.69/1.09  parent0[0]: (1) {G0,W8,D3,L2,V3,M2} I { ! member( skol1( Z, Y ), Y ), 
% 0.69/1.09    subset( X, Y ) }.
% 0.69/1.09  parent1[0]: (2) {G0,W8,D3,L2,V2,M2} I { member( skol1( X, Y ), X ), subset
% 0.69/1.09    ( X, Y ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := Y
% 0.69/1.09     Y := X
% 0.69/1.09     Z := X
% 0.69/1.09  end
% 0.69/1.09  substitution1:
% 0.69/1.09     X := X
% 0.69/1.09     Y := X
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  subsumption: (61) {G1,W6,D2,L2,V2,M2} R(2,1) { subset( X, X ), subset( Y, X
% 0.69/1.09     ) }.
% 0.69/1.09  parent0: (159) {G1,W6,D2,L2,V2,M2}  { subset( Y, X ), subset( X, X ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := X
% 0.69/1.09     Y := X
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09     0 ==> 0
% 0.69/1.09     1 ==> 0
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  factor: (161) {G1,W3,D2,L1,V1,M1}  { subset( X, X ) }.
% 0.69/1.09  parent0[0, 1]: (61) {G1,W6,D2,L2,V2,M2} R(2,1) { subset( X, X ), subset( Y
% 0.69/1.09    , X ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := X
% 0.69/1.09     Y := X
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  subsumption: (69) {G2,W3,D2,L1,V1,M1} F(61) { subset( X, X ) }.
% 0.69/1.09  parent0: (161) {G1,W3,D2,L1,V1,M1}  { subset( X, X ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09     X := X
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09     0 ==> 0
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  resolution: (162) {G1,W3,D2,L1,V0,M1}  { ! subset( skol4, skol4 ) }.
% 0.69/1.09  parent0[0]: (29) {G0,W4,D3,L1,V0,M1} I { ! member( skol4, power_set( skol4
% 0.69/1.09     ) ) }.
% 0.69/1.09  parent1[1]: (7) {G0,W7,D3,L2,V2,M2} I { ! subset( X, Y ), member( X, 
% 0.69/1.09    power_set( Y ) ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09  end
% 0.69/1.09  substitution1:
% 0.69/1.09     X := skol4
% 0.69/1.09     Y := skol4
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  resolution: (163) {G2,W0,D0,L0,V0,M0}  {  }.
% 0.69/1.09  parent0[0]: (162) {G1,W3,D2,L1,V0,M1}  { ! subset( skol4, skol4 ) }.
% 0.69/1.09  parent1[0]: (69) {G2,W3,D2,L1,V1,M1} F(61) { subset( X, X ) }.
% 0.69/1.09  substitution0:
% 0.69/1.09  end
% 0.69/1.09  substitution1:
% 0.69/1.09     X := skol4
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  subsumption: (113) {G3,W0,D0,L0,V0,M0} R(7,29);r(69) {  }.
% 0.69/1.09  parent0: (163) {G2,W0,D0,L0,V0,M0}  {  }.
% 0.69/1.09  substitution0:
% 0.69/1.09  end
% 0.69/1.09  permutation0:
% 0.69/1.09  end
% 0.69/1.09  
% 0.69/1.09  Proof check complete!
% 0.69/1.09  
% 0.69/1.09  Memory use:
% 0.69/1.09  
% 0.69/1.09  space for terms:        1565
% 0.69/1.09  space for clauses:      5707
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  clauses generated:      194
% 0.69/1.09  clauses kept:           114
% 0.69/1.09  clauses selected:       30
% 0.69/1.09  clauses deleted:        1
% 0.69/1.09  clauses inuse deleted:  0
% 0.69/1.09  
% 0.69/1.09  subsentry:          221
% 0.69/1.09  literals s-matched: 200
% 0.69/1.09  literals matched:   200
% 0.69/1.09  full subsumption:   52
% 0.69/1.09  
% 0.69/1.09  checksum:           -1034858746
% 0.69/1.09  
% 0.69/1.09  
% 0.69/1.09  Bliksem ended
%------------------------------------------------------------------------------