TSTP Solution File: GEO187+3 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : GEO187+3 : TPTP v8.1.0. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n010.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 02:52:27 EDT 2022

% Result   : Theorem 6.65s 7.07s
% Output   : Refutation 6.65s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : GEO187+3 : TPTP v8.1.0. Released v4.0.0.
% 0.07/0.13  % Command  : bliksem %s
% 0.13/0.34  % Computer : n010.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % DateTime : Sat Jun 18 05:01:53 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 6.65/7.07  *** allocated 10000 integers for termspace/termends
% 6.65/7.07  *** allocated 10000 integers for clauses
% 6.65/7.07  *** allocated 10000 integers for justifications
% 6.65/7.07  Bliksem 1.12
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Automatic Strategy Selection
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Clauses:
% 6.65/7.07  
% 6.65/7.07  { ! distinct_points( X, X ) }.
% 6.65/7.07  { ! distinct_lines( X, X ) }.
% 6.65/7.07  { ! convergent_lines( X, X ) }.
% 6.65/7.07  { ! distinct_points( X, Y ), distinct_points( X, Z ), distinct_points( Y, Z
% 6.65/7.07     ) }.
% 6.65/7.07  { ! distinct_lines( X, Y ), distinct_lines( X, Z ), distinct_lines( Y, Z )
% 6.65/7.07     }.
% 6.65/7.07  { ! convergent_lines( X, Y ), convergent_lines( X, Z ), convergent_lines( Y
% 6.65/7.07    , Z ) }.
% 6.65/7.07  { ! distinct_points( X, Y ), ! apart_point_and_line( X, line_connecting( X
% 6.65/7.07    , Y ) ) }.
% 6.65/7.07  { ! distinct_points( X, Y ), ! apart_point_and_line( Y, line_connecting( X
% 6.65/7.07    , Y ) ) }.
% 6.65/7.07  { ! convergent_lines( X, Y ), ! apart_point_and_line( intersection_point( X
% 6.65/7.07    , Y ), X ) }.
% 6.65/7.07  { ! convergent_lines( X, Y ), ! apart_point_and_line( intersection_point( X
% 6.65/7.07    , Y ), Y ) }.
% 6.65/7.07  { ! distinct_points( X, Y ), ! distinct_lines( Z, T ), apart_point_and_line
% 6.65/7.07    ( X, Z ), apart_point_and_line( X, T ), apart_point_and_line( Y, Z ), 
% 6.65/7.07    apart_point_and_line( Y, T ) }.
% 6.65/7.07  { ! apart_point_and_line( X, Y ), distinct_points( X, Z ), 
% 6.65/7.07    apart_point_and_line( Z, Y ) }.
% 6.65/7.07  { ! apart_point_and_line( X, Y ), distinct_lines( Y, Z ), 
% 6.65/7.07    apart_point_and_line( X, Z ) }.
% 6.65/7.07  { ! convergent_lines( X, Y ), distinct_lines( Y, Z ), convergent_lines( X, 
% 6.65/7.07    Z ) }.
% 6.65/7.07  { ! distinct_lines( X, Y ), convergent_lines( X, Y ) }.
% 6.65/7.07  { ! convergent_lines( parallel_through_point( Y, X ), Y ) }.
% 6.65/7.07  { ! apart_point_and_line( X, parallel_through_point( Y, X ) ) }.
% 6.65/7.07  { ! distinct_lines( X, Y ), apart_point_and_line( Z, X ), 
% 6.65/7.07    apart_point_and_line( Z, Y ), convergent_lines( X, Y ) }.
% 6.65/7.07  { convergent_lines( X, Y ), unorthogonal_lines( X, Y ) }.
% 6.65/7.07  { ! convergent_lines( X, Y ), ! unorthogonal_lines( X, Y ), alpha1( X, Z )
% 6.65/7.07    , convergent_lines( Y, Z ) }.
% 6.65/7.07  { ! convergent_lines( X, Y ), ! unorthogonal_lines( X, Y ), alpha1( X, Z )
% 6.65/7.07    , unorthogonal_lines( Y, Z ) }.
% 6.65/7.07  { ! alpha1( X, Y ), convergent_lines( X, Y ) }.
% 6.65/7.07  { ! alpha1( X, Y ), unorthogonal_lines( X, Y ) }.
% 6.65/7.07  { ! convergent_lines( X, Y ), ! unorthogonal_lines( X, Y ), alpha1( X, Y )
% 6.65/7.07     }.
% 6.65/7.07  { ! unorthogonal_lines( orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.07  { ! apart_point_and_line( X, orthogonal_through_point( Y, X ) ) }.
% 6.65/7.07  { ! distinct_lines( X, Y ), apart_point_and_line( Z, X ), 
% 6.65/7.07    apart_point_and_line( Z, Y ), unorthogonal_lines( X, T ), 
% 6.65/7.07    unorthogonal_lines( Y, T ) }.
% 6.65/7.07  { convergent_lines( X, Y ), unorthogonal_lines( X, Y ) }.
% 6.65/7.07  { alpha2( X, Z ), convergent_lines( Z, Y ), ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ) }.
% 6.65/7.07  { alpha2( X, Z ), unorthogonal_lines( Z, Y ), ! convergent_lines( X, Y ), !
% 6.65/7.07     unorthogonal_lines( X, Y ) }.
% 6.65/7.07  { ! alpha2( X, Y ), convergent_lines( Y, X ) }.
% 6.65/7.07  { ! alpha2( X, Y ), unorthogonal_lines( Y, X ) }.
% 6.65/7.07  { ! convergent_lines( Y, X ), ! unorthogonal_lines( Y, X ), alpha2( X, Y )
% 6.65/7.07     }.
% 6.65/7.07  { unorthogonal_lines( Z, X ), unorthogonal_lines( Z, Y ), ! 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  { ! point( X ), ! point( Y ), ! distinct_points( X, Y ), line( 
% 6.65/7.07    line_connecting( X, Y ) ) }.
% 6.65/7.07  { ! line( X ), ! line( Y ), ! convergent_lines( X, Y ), point( 
% 6.65/7.07    intersection_point( X, Y ) ) }.
% 6.65/7.07  { ! line( X ), ! point( Y ), line( parallel_through_point( X, Y ) ) }.
% 6.65/7.07  { ! line( X ), ! point( Y ), line( orthogonal_through_point( X, Y ) ) }.
% 6.65/7.07  { ! equal_points( X, Y ), ! distinct_points( X, Y ) }.
% 6.65/7.07  { distinct_points( X, Y ), equal_points( X, Y ) }.
% 6.65/7.07  { ! equal_lines( X, Y ), ! distinct_lines( X, Y ) }.
% 6.65/7.07  { distinct_lines( X, Y ), equal_lines( X, Y ) }.
% 6.65/7.07  { ! parallel_lines( X, Y ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  { convergent_lines( X, Y ), parallel_lines( X, Y ) }.
% 6.65/7.07  { ! incident_point_and_line( X, Y ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.07  { apart_point_and_line( X, Y ), incident_point_and_line( X, Y ) }.
% 6.65/7.07  { ! orthogonal_lines( X, Y ), ! unorthogonal_lines( X, Y ) }.
% 6.65/7.07  { unorthogonal_lines( X, Y ), orthogonal_lines( X, Y ) }.
% 6.65/7.07  { distinct_points( skol1, skol2 ) }.
% 6.65/7.07  { distinct_points( skol3, skol4 ) }.
% 6.65/7.07  { incident_point_and_line( skol1, line_connecting( skol3, skol4 ) ) }.
% 6.65/7.07  { incident_point_and_line( skol2, line_connecting( skol3, skol4 ) ) }.
% 6.65/7.07  { ! incident_point_and_line( skol3, line_connecting( skol1, skol2 ) ), ! 
% 6.65/7.07    incident_point_and_line( skol4, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  
% 6.65/7.07  percentage equality = 0.000000, percentage horn = 0.627451
% 6.65/7.07  This a non-horn, non-equality problem
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Options Used:
% 6.65/7.07  
% 6.65/7.07  useres =            1
% 6.65/7.07  useparamod =        0
% 6.65/7.07  useeqrefl =         0
% 6.65/7.07  useeqfact =         0
% 6.65/7.07  usefactor =         1
% 6.65/7.07  usesimpsplitting =  0
% 6.65/7.07  usesimpdemod =      0
% 6.65/7.07  usesimpres =        3
% 6.65/7.07  
% 6.65/7.07  resimpinuse      =  1000
% 6.65/7.07  resimpclauses =     20000
% 6.65/7.07  substype =          standard
% 6.65/7.07  backwardsubs =      1
% 6.65/7.07  selectoldest =      5
% 6.65/7.07  
% 6.65/7.07  litorderings [0] =  split
% 6.65/7.07  litorderings [1] =  liftord
% 6.65/7.07  
% 6.65/7.07  termordering =      none
% 6.65/7.07  
% 6.65/7.07  litapriori =        1
% 6.65/7.07  termapriori =       0
% 6.65/7.07  litaposteriori =    0
% 6.65/7.07  termaposteriori =   0
% 6.65/7.07  demodaposteriori =  0
% 6.65/7.07  ordereqreflfact =   0
% 6.65/7.07  
% 6.65/7.07  litselect =         none
% 6.65/7.07  
% 6.65/7.07  maxweight =         15
% 6.65/7.07  maxdepth =          30000
% 6.65/7.07  maxlength =         115
% 6.65/7.07  maxnrvars =         195
% 6.65/7.07  excuselevel =       1
% 6.65/7.07  increasemaxweight = 1
% 6.65/7.07  
% 6.65/7.07  maxselected =       10000000
% 6.65/7.07  maxnrclauses =      10000000
% 6.65/7.07  
% 6.65/7.07  showgenerated =    0
% 6.65/7.07  showkept =         0
% 6.65/7.07  showselected =     0
% 6.65/7.07  showdeleted =      0
% 6.65/7.07  showresimp =       1
% 6.65/7.07  showstatus =       2000
% 6.65/7.07  
% 6.65/7.07  prologoutput =     0
% 6.65/7.07  nrgoals =          5000000
% 6.65/7.07  totalproof =       1
% 6.65/7.07  
% 6.65/7.07  Symbols occurring in the translation:
% 6.65/7.07  
% 6.65/7.07  {}  [0, 0]      (w:1, o:2, a:1, s:1, b:0), 
% 6.65/7.07  .  [1, 2]      (w:1, o:27, a:1, s:1, b:0), 
% 6.65/7.07  !  [4, 1]      (w:0, o:20, a:1, s:1, b:0), 
% 6.65/7.07  =  [13, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 6.65/7.07  ==>  [14, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 6.65/7.07  distinct_points  [36, 2]      (w:1, o:52, a:1, s:1, b:0), 
% 6.65/7.07  distinct_lines  [37, 2]      (w:1, o:53, a:1, s:1, b:0), 
% 6.65/7.07  convergent_lines  [38, 2]      (w:1, o:51, a:1, s:1, b:0), 
% 6.65/7.07  line_connecting  [41, 2]      (w:1, o:54, a:1, s:1, b:0), 
% 6.65/7.07  apart_point_and_line  [42, 2]      (w:1, o:55, a:1, s:1, b:0), 
% 6.65/7.07  intersection_point  [43, 2]      (w:1, o:56, a:1, s:1, b:0), 
% 6.65/7.07  parallel_through_point  [46, 2]      (w:1, o:59, a:1, s:1, b:0), 
% 6.65/7.07  unorthogonal_lines  [49, 2]      (w:1, o:60, a:1, s:1, b:0), 
% 6.65/7.07  orthogonal_through_point  [52, 2]      (w:1, o:57, a:1, s:1, b:0), 
% 6.65/7.07  point  [54, 1]      (w:1, o:25, a:1, s:1, b:0), 
% 6.65/7.07  line  [55, 1]      (w:1, o:26, a:1, s:1, b:0), 
% 6.65/7.07  equal_points  [56, 2]      (w:1, o:61, a:1, s:1, b:0), 
% 6.65/7.07  equal_lines  [57, 2]      (w:1, o:62, a:1, s:1, b:0), 
% 6.65/7.07  parallel_lines  [58, 2]      (w:1, o:63, a:1, s:1, b:0), 
% 6.65/7.07  incident_point_and_line  [59, 2]      (w:1, o:64, a:1, s:1, b:0), 
% 6.65/7.07  orthogonal_lines  [60, 2]      (w:1, o:58, a:1, s:1, b:0), 
% 6.65/7.07  alpha1  [61, 2]      (w:1, o:65, a:1, s:1, b:0), 
% 6.65/7.07  alpha2  [62, 2]      (w:1, o:66, a:1, s:1, b:0), 
% 6.65/7.07  skol1  [63, 0]      (w:1, o:16, a:1, s:1, b:0), 
% 6.65/7.07  skol2  [64, 0]      (w:1, o:17, a:1, s:1, b:0), 
% 6.65/7.07  skol3  [65, 0]      (w:1, o:18, a:1, s:1, b:0), 
% 6.65/7.07  skol4  [66, 0]      (w:1, o:19, a:1, s:1, b:0).
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Starting Search:
% 6.65/7.07  
% 6.65/7.07  *** allocated 15000 integers for clauses
% 6.65/7.07  *** allocated 22500 integers for clauses
% 6.65/7.07  *** allocated 33750 integers for clauses
% 6.65/7.07  *** allocated 15000 integers for termspace/termends
% 6.65/7.07  *** allocated 50625 integers for clauses
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  *** allocated 22500 integers for termspace/termends
% 6.65/7.07  *** allocated 75937 integers for clauses
% 6.65/7.07  *** allocated 33750 integers for termspace/termends
% 6.65/7.07  *** allocated 113905 integers for clauses
% 6.65/7.07  
% 6.65/7.07  Intermediate Status:
% 6.65/7.07  Generated:    15119
% 6.65/7.07  Kept:         2001
% 6.65/7.07  Inuse:        297
% 6.65/7.07  Deleted:      2
% 6.65/7.07  Deletedinuse: 2
% 6.65/7.07  
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  *** allocated 50625 integers for termspace/termends
% 6.65/7.07  *** allocated 170857 integers for clauses
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  *** allocated 75937 integers for termspace/termends
% 6.65/7.07  
% 6.65/7.07  Intermediate Status:
% 6.65/7.07  Generated:    30105
% 6.65/7.07  Kept:         4050
% 6.65/7.07  Inuse:        472
% 6.65/7.07  Deleted:      6
% 6.65/7.07  Deletedinuse: 3
% 6.65/7.07  
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  *** allocated 256285 integers for clauses
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  *** allocated 113905 integers for termspace/termends
% 6.65/7.07  *** allocated 384427 integers for clauses
% 6.65/7.07  
% 6.65/7.07  Intermediate Status:
% 6.65/7.07  Generated:    134785
% 6.65/7.07  Kept:         6062
% 6.65/7.07  Inuse:        1117
% 6.65/7.07  Deleted:      19
% 6.65/7.07  Deletedinuse: 3
% 6.65/7.07  
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  Resimplifying inuse:
% 6.65/7.07  Done
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Bliksems!, er is een bewijs:
% 6.65/7.07  % SZS status Theorem
% 6.65/7.07  % SZS output start Refutation
% 6.65/7.07  
% 6.65/7.07  (1) {G0,W3,D2,L1,V1,M1} I { ! distinct_lines( X, X ) }.
% 6.65/7.07  (2) {G0,W3,D2,L1,V1,M1} I { ! convergent_lines( X, X ) }.
% 6.65/7.07  (4) {G0,W9,D2,L3,V3,M3} I { distinct_lines( X, Z ), distinct_lines( Y, Z )
% 6.65/7.07    , ! distinct_lines( X, Y ) }.
% 6.65/7.07  (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), convergent_lines( Y, 
% 6.65/7.07    Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  (12) {G0,W9,D2,L3,V3,M2} I { distinct_lines( Y, Z ), apart_point_and_line( 
% 6.65/7.07    X, Z ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.07  (14) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), ! distinct_lines( X
% 6.65/7.07    , Y ) }.
% 6.65/7.07  (15) {G0,W5,D3,L1,V2,M1} I { ! convergent_lines( parallel_through_point( Y
% 6.65/7.07    , X ), Y ) }.
% 6.65/7.07  (16) {G0,W5,D3,L1,V2,M1} I { ! apart_point_and_line( X, 
% 6.65/7.07    parallel_through_point( Y, X ) ) }.
% 6.65/7.07  (17) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), unorthogonal_lines( 
% 6.65/7.07    X, Y ) }.
% 6.65/7.07  (19) {G0,W12,D2,L4,V3,M1} I { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), unorthogonal_lines( Y, Z ), alpha1( X, Z )
% 6.65/7.07     }.
% 6.65/7.07  (20) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), ! alpha1( X, Y ) }.
% 6.65/7.07  (23) {G0,W5,D3,L1,V2,M1} I { ! unorthogonal_lines( orthogonal_through_point
% 6.65/7.07    ( Y, X ), Y ) }.
% 6.65/7.07  (31) {G0,W9,D2,L3,V3,M2} I { ! convergent_lines( X, Y ), unorthogonal_lines
% 6.65/7.07    ( Z, X ), unorthogonal_lines( Z, Y ) }.
% 6.65/7.07  (43) {G0,W6,D2,L2,V2,M1} I { apart_point_and_line( X, Y ), 
% 6.65/7.07    incident_point_and_line( X, Y ) }.
% 6.65/7.07  (50) {G0,W10,D3,L2,V0,M1} I { ! incident_point_and_line( skol3, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ), ! incident_point_and_line( skol4, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  (58) {G1,W6,D2,L2,V2,M2} R(4,1) { ! distinct_lines( Y, X ), distinct_lines
% 6.65/7.07    ( X, Y ) }.
% 6.65/7.07  (67) {G1,W8,D3,L2,V3,M2} R(5,15) { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, Z ), X ), convergent_lines( X, Y ) }.
% 6.65/7.07  (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  (72) {G2,W5,D3,L1,V2,M1} R(69,15) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  (73) {G3,W8,D3,L2,V3,M2} R(72,5) { ! convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( X, parallel_through_point( Y, Z ) ) }.
% 6.65/7.07  (74) {G3,W8,D3,L2,V3,M2} R(72,5) { ! convergent_lines( X, Y ), 
% 6.65/7.07    convergent_lines( X, parallel_through_point( Y, Z ) ) }.
% 6.65/7.07  (105) {G1,W5,D3,L1,V2,M1} R(17,23) { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), X ) }.
% 6.65/7.07  (107) {G2,W8,D3,L2,V3,M2} R(105,5) { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  (121) {G2,W6,D2,L2,V2,M1} R(14,58) { convergent_lines( X, Y ), ! 
% 6.65/7.07    distinct_lines( Y, X ) }.
% 6.65/7.07  (128) {G1,W12,D2,L4,V4,M2} R(12,12) { distinct_lines( X, Y ), 
% 6.65/7.07    distinct_lines( Y, T ), apart_point_and_line( Z, T ), ! 
% 6.65/7.07    apart_point_and_line( Z, X ) }.
% 6.65/7.07  (140) {G1,W8,D3,L2,V3,M1} R(12,16) { distinct_lines( X, 
% 6.65/7.07    parallel_through_point( Y, Z ) ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.07  (165) {G3,W8,D3,L2,V3,M2} R(107,69) { convergent_lines( Z, X ), 
% 6.65/7.07    convergent_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  (170) {G1,W12,D2,L4,V3,M2} R(19,20) { ! convergent_lines( X, Y ), 
% 6.65/7.07    convergent_lines( X, Z ), ! unorthogonal_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( Y, Z ) }.
% 6.65/7.07  (178) {G4,W8,D3,L2,V3,M2} R(165,69) { convergent_lines( X, 
% 6.65/7.07    orthogonal_through_point( Y, Z ) ), convergent_lines( X, Y ) }.
% 6.65/7.07  (236) {G4,W10,D3,L2,V4,M2} R(67,74) { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Z, T ), X ), convergent_lines( 
% 6.65/7.07    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  (240) {G4,W10,D3,L2,V4,M2} R(67,73) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( Z, T ) ), convergent_lines( 
% 6.65/7.07    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  (244) {G2,W8,D3,L2,V3,M2} R(67,69) { convergent_lines( X, Z ), ! 
% 6.65/7.07    convergent_lines( parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  (256) {G3,W8,D3,L2,V3,M2} R(244,69) { ! convergent_lines( Y, 
% 6.65/7.07    parallel_through_point( X, Z ) ), convergent_lines( X, Y ) }.
% 6.65/7.07  (271) {G1,W8,D3,L2,V3,M1} R(31,23) { ! convergent_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( orthogonal_through_point( Y, Z ), X ) }.
% 6.65/7.07  (347) {G1,W10,D3,L2,V0,M1} R(50,43) { apart_point_and_line( skol4, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ), ! incident_point_and_line( skol3, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  (1222) {G2,W10,D3,L2,V0,M1} R(347,43) { apart_point_and_line( skol3, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ), apart_point_and_line( skol4, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  (1225) {G3,W13,D3,L3,V1,M2} R(1222,12) { distinct_lines( line_connecting( 
% 6.65/7.07    skol1, skol2 ), X ), apart_point_and_line( skol4, X ), 
% 6.65/7.07    apart_point_and_line( skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  (2159) {G2,W14,D3,L4,V5,M1} R(128,140) { distinct_lines( X, Y ), 
% 6.65/7.07    distinct_lines( Y, Z ), distinct_lines( Z, parallel_through_point( U, T )
% 6.65/7.07     ), ! apart_point_and_line( T, X ) }.
% 6.65/7.07  (2167) {G3,W8,D3,L2,V3,M1} F(2159);r(58) { distinct_lines( 
% 6.65/7.07    parallel_through_point( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.07  (2657) {G5,W8,D3,L2,V3,M1} R(170,23);r(178) { convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ) }.
% 6.65/7.07  (2664) {G6,W10,D3,L2,V4,M2} R(2657,271) { ! convergent_lines( 
% 6.65/7.07    orthogonal_through_point( Z, T ), X ), convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  (2833) {G7,W7,D4,L1,V3,M1} R(2664,2) { ! convergent_lines( 
% 6.65/7.07    orthogonal_through_point( orthogonal_through_point( X, Y ), Z ), X ) }.
% 6.65/7.07  (2931) {G8,W9,D5,L1,V4,M1} R(2833,256) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( orthogonal_through_point( 
% 6.65/7.07    orthogonal_through_point( X, Y ), Z ), T ) ) }.
% 6.65/7.07  (3323) {G9,W13,D7,L1,V6,M1} R(2931,240) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.07    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.07    , W ) ) }.
% 6.65/7.07  (3325) {G9,W13,D7,L1,V6,M1} R(2931,236) { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.07    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.07    , W ), X ) }.
% 6.65/7.07  (7298) {G4,W15,D3,L3,V2,M1} R(1225,140) { distinct_lines( line_connecting( 
% 6.65/7.07    skol1, skol2 ), X ), distinct_lines( line_connecting( skol1, skol2 ), 
% 6.65/7.07    parallel_through_point( Y, skol3 ) ), apart_point_and_line( skol4, X )
% 6.65/7.07     }.
% 6.65/7.07  (7299) {G5,W12,D3,L2,V1,M1} F(7298) { distinct_lines( line_connecting( 
% 6.65/7.07    skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.07    apart_point_and_line( skol4, parallel_through_point( X, skol3 ) ) }.
% 6.65/7.07  (7312) {G6,W14,D3,L2,V2,M1} R(7299,2167) { distinct_lines( line_connecting
% 6.65/7.07    ( skol1, skol2 ), parallel_through_point( X, skol3 ) ), distinct_lines( 
% 6.65/7.07    parallel_through_point( Y, skol4 ), parallel_through_point( X, skol3 ) )
% 6.65/7.07     }.
% 6.65/7.07  (7369) {G7,W14,D3,L2,V2,M1} R(7312,121) { convergent_lines( 
% 6.65/7.07    parallel_through_point( X, skol3 ), parallel_through_point( Y, skol4 ) )
% 6.65/7.07    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.07    ( X, skol3 ) ) }.
% 6.65/7.07  (7371) {G8,W14,D3,L2,V2,M1} R(7369,121) { convergent_lines( 
% 6.65/7.07    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ), 
% 6.65/7.07    convergent_lines( parallel_through_point( X, skol3 ), 
% 6.65/7.07    parallel_through_point( Y, skol4 ) ) }.
% 6.65/7.07  (7376) {G10,W7,D3,L1,V1,M1} R(7371,3323) { convergent_lines( 
% 6.65/7.07    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  (7377) {G11,W0,D0,L0,V0,M0} R(7376,3325) {  }.
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  % SZS output end Refutation
% 6.65/7.07  found a proof!
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Unprocessed initial clauses:
% 6.65/7.07  
% 6.65/7.07  (7379) {G0,W3,D2,L1,V1,M1}  { ! distinct_points( X, X ) }.
% 6.65/7.07  (7380) {G0,W3,D2,L1,V1,M1}  { ! distinct_lines( X, X ) }.
% 6.65/7.07  (7381) {G0,W3,D2,L1,V1,M1}  { ! convergent_lines( X, X ) }.
% 6.65/7.07  (7382) {G0,W9,D2,L3,V3,M3}  { ! distinct_points( X, Y ), distinct_points( X
% 6.65/7.07    , Z ), distinct_points( Y, Z ) }.
% 6.65/7.07  (7383) {G0,W9,D2,L3,V3,M3}  { ! distinct_lines( X, Y ), distinct_lines( X, 
% 6.65/7.07    Z ), distinct_lines( Y, Z ) }.
% 6.65/7.07  (7384) {G0,W9,D2,L3,V3,M3}  { ! convergent_lines( X, Y ), convergent_lines
% 6.65/7.07    ( X, Z ), convergent_lines( Y, Z ) }.
% 6.65/7.07  (7385) {G0,W8,D3,L2,V2,M2}  { ! distinct_points( X, Y ), ! 
% 6.65/7.07    apart_point_and_line( X, line_connecting( X, Y ) ) }.
% 6.65/7.07  (7386) {G0,W8,D3,L2,V2,M2}  { ! distinct_points( X, Y ), ! 
% 6.65/7.07    apart_point_and_line( Y, line_connecting( X, Y ) ) }.
% 6.65/7.07  (7387) {G0,W8,D3,L2,V2,M2}  { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    apart_point_and_line( intersection_point( X, Y ), X ) }.
% 6.65/7.07  (7388) {G0,W8,D3,L2,V2,M2}  { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    apart_point_and_line( intersection_point( X, Y ), Y ) }.
% 6.65/7.07  (7389) {G0,W18,D2,L6,V4,M6}  { ! distinct_points( X, Y ), ! distinct_lines
% 6.65/7.07    ( Z, T ), apart_point_and_line( X, Z ), apart_point_and_line( X, T ), 
% 6.65/7.07    apart_point_and_line( Y, Z ), apart_point_and_line( Y, T ) }.
% 6.65/7.07  (7390) {G0,W9,D2,L3,V3,M3}  { ! apart_point_and_line( X, Y ), 
% 6.65/7.07    distinct_points( X, Z ), apart_point_and_line( Z, Y ) }.
% 6.65/7.07  (7391) {G0,W9,D2,L3,V3,M3}  { ! apart_point_and_line( X, Y ), 
% 6.65/7.07    distinct_lines( Y, Z ), apart_point_and_line( X, Z ) }.
% 6.65/7.07  (7392) {G0,W9,D2,L3,V3,M3}  { ! convergent_lines( X, Y ), distinct_lines( Y
% 6.65/7.07    , Z ), convergent_lines( X, Z ) }.
% 6.65/7.07  (7393) {G0,W6,D2,L2,V2,M2}  { ! distinct_lines( X, Y ), convergent_lines( X
% 6.65/7.07    , Y ) }.
% 6.65/7.07  (7394) {G0,W5,D3,L1,V2,M1}  { ! convergent_lines( parallel_through_point( Y
% 6.65/7.07    , X ), Y ) }.
% 6.65/7.07  (7395) {G0,W5,D3,L1,V2,M1}  { ! apart_point_and_line( X, 
% 6.65/7.07    parallel_through_point( Y, X ) ) }.
% 6.65/7.07  (7396) {G0,W12,D2,L4,V3,M4}  { ! distinct_lines( X, Y ), 
% 6.65/7.07    apart_point_and_line( Z, X ), apart_point_and_line( Z, Y ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  (7397) {G0,W6,D2,L2,V2,M2}  { convergent_lines( X, Y ), unorthogonal_lines
% 6.65/7.07    ( X, Y ) }.
% 6.65/7.07  (7398) {G0,W12,D2,L4,V3,M4}  { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), alpha1( X, Z ), convergent_lines( Y, Z ) }.
% 6.65/7.07  (7399) {G0,W12,D2,L4,V3,M4}  { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), alpha1( X, Z ), unorthogonal_lines( Y, Z )
% 6.65/7.07     }.
% 6.65/7.07  (7400) {G0,W6,D2,L2,V2,M2}  { ! alpha1( X, Y ), convergent_lines( X, Y )
% 6.65/7.07     }.
% 6.65/7.07  (7401) {G0,W6,D2,L2,V2,M2}  { ! alpha1( X, Y ), unorthogonal_lines( X, Y )
% 6.65/7.07     }.
% 6.65/7.07  (7402) {G0,W9,D2,L3,V2,M3}  { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), alpha1( X, Y ) }.
% 6.65/7.07  (7403) {G0,W5,D3,L1,V2,M1}  { ! unorthogonal_lines( 
% 6.65/7.07    orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.07  (7404) {G0,W5,D3,L1,V2,M1}  { ! apart_point_and_line( X, 
% 6.65/7.07    orthogonal_through_point( Y, X ) ) }.
% 6.65/7.07  (7405) {G0,W15,D2,L5,V4,M5}  { ! distinct_lines( X, Y ), 
% 6.65/7.07    apart_point_and_line( Z, X ), apart_point_and_line( Z, Y ), 
% 6.65/7.07    unorthogonal_lines( X, T ), unorthogonal_lines( Y, T ) }.
% 6.65/7.07  (7406) {G0,W6,D2,L2,V2,M2}  { convergent_lines( X, Y ), unorthogonal_lines
% 6.65/7.07    ( X, Y ) }.
% 6.65/7.07  (7407) {G0,W12,D2,L4,V3,M4}  { alpha2( X, Z ), convergent_lines( Z, Y ), ! 
% 6.65/7.07    convergent_lines( X, Y ), ! unorthogonal_lines( X, Y ) }.
% 6.65/7.07  (7408) {G0,W12,D2,L4,V3,M4}  { alpha2( X, Z ), unorthogonal_lines( Z, Y ), 
% 6.65/7.07    ! convergent_lines( X, Y ), ! unorthogonal_lines( X, Y ) }.
% 6.65/7.07  (7409) {G0,W6,D2,L2,V2,M2}  { ! alpha2( X, Y ), convergent_lines( Y, X )
% 6.65/7.07     }.
% 6.65/7.07  (7410) {G0,W6,D2,L2,V2,M2}  { ! alpha2( X, Y ), unorthogonal_lines( Y, X )
% 6.65/7.07     }.
% 6.65/7.07  (7411) {G0,W9,D2,L3,V2,M3}  { ! convergent_lines( Y, X ), ! 
% 6.65/7.07    unorthogonal_lines( Y, X ), alpha2( X, Y ) }.
% 6.65/7.07  (7412) {G0,W9,D2,L3,V3,M3}  { unorthogonal_lines( Z, X ), 
% 6.65/7.07    unorthogonal_lines( Z, Y ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  (7413) {G0,W11,D3,L4,V2,M4}  { ! point( X ), ! point( Y ), ! 
% 6.65/7.07    distinct_points( X, Y ), line( line_connecting( X, Y ) ) }.
% 6.65/7.07  (7414) {G0,W11,D3,L4,V2,M4}  { ! line( X ), ! line( Y ), ! convergent_lines
% 6.65/7.07    ( X, Y ), point( intersection_point( X, Y ) ) }.
% 6.65/7.07  (7415) {G0,W8,D3,L3,V2,M3}  { ! line( X ), ! point( Y ), line( 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  (7416) {G0,W8,D3,L3,V2,M3}  { ! line( X ), ! point( Y ), line( 
% 6.65/7.07    orthogonal_through_point( X, Y ) ) }.
% 6.65/7.07  (7417) {G0,W6,D2,L2,V2,M2}  { ! equal_points( X, Y ), ! distinct_points( X
% 6.65/7.07    , Y ) }.
% 6.65/7.07  (7418) {G0,W6,D2,L2,V2,M2}  { distinct_points( X, Y ), equal_points( X, Y )
% 6.65/7.07     }.
% 6.65/7.07  (7419) {G0,W6,D2,L2,V2,M2}  { ! equal_lines( X, Y ), ! distinct_lines( X, Y
% 6.65/7.07     ) }.
% 6.65/7.07  (7420) {G0,W6,D2,L2,V2,M2}  { distinct_lines( X, Y ), equal_lines( X, Y )
% 6.65/7.07     }.
% 6.65/7.07  (7421) {G0,W6,D2,L2,V2,M2}  { ! parallel_lines( X, Y ), ! convergent_lines
% 6.65/7.07    ( X, Y ) }.
% 6.65/7.07  (7422) {G0,W6,D2,L2,V2,M2}  { convergent_lines( X, Y ), parallel_lines( X, 
% 6.65/7.07    Y ) }.
% 6.65/7.07  (7423) {G0,W6,D2,L2,V2,M2}  { ! incident_point_and_line( X, Y ), ! 
% 6.65/7.07    apart_point_and_line( X, Y ) }.
% 6.65/7.07  (7424) {G0,W6,D2,L2,V2,M2}  { apart_point_and_line( X, Y ), 
% 6.65/7.07    incident_point_and_line( X, Y ) }.
% 6.65/7.07  (7425) {G0,W6,D2,L2,V2,M2}  { ! orthogonal_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ) }.
% 6.65/7.07  (7426) {G0,W6,D2,L2,V2,M2}  { unorthogonal_lines( X, Y ), orthogonal_lines
% 6.65/7.07    ( X, Y ) }.
% 6.65/7.07  (7427) {G0,W3,D2,L1,V0,M1}  { distinct_points( skol1, skol2 ) }.
% 6.65/7.07  (7428) {G0,W3,D2,L1,V0,M1}  { distinct_points( skol3, skol4 ) }.
% 6.65/7.07  (7429) {G0,W5,D3,L1,V0,M1}  { incident_point_and_line( skol1, 
% 6.65/7.07    line_connecting( skol3, skol4 ) ) }.
% 6.65/7.07  (7430) {G0,W5,D3,L1,V0,M1}  { incident_point_and_line( skol2, 
% 6.65/7.07    line_connecting( skol3, skol4 ) ) }.
% 6.65/7.07  (7431) {G0,W10,D3,L2,V0,M2}  { ! incident_point_and_line( skol3, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ), ! incident_point_and_line( skol4, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  
% 6.65/7.07  
% 6.65/7.07  Total Proof:
% 6.65/7.07  
% 6.65/7.07  subsumption: (1) {G0,W3,D2,L1,V1,M1} I { ! distinct_lines( X, X ) }.
% 6.65/7.07  parent0: (7380) {G0,W3,D2,L1,V1,M1}  { ! distinct_lines( X, X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (2) {G0,W3,D2,L1,V1,M1} I { ! convergent_lines( X, X ) }.
% 6.65/7.07  parent0: (7381) {G0,W3,D2,L1,V1,M1}  { ! convergent_lines( X, X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (4) {G0,W9,D2,L3,V3,M3} I { distinct_lines( X, Z ), 
% 6.65/7.07    distinct_lines( Y, Z ), ! distinct_lines( X, Y ) }.
% 6.65/7.07  parent0: (7383) {G0,W9,D2,L3,V3,M3}  { ! distinct_lines( X, Y ), 
% 6.65/7.07    distinct_lines( X, Z ), distinct_lines( Y, Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 2
% 6.65/7.07     1 ==> 0
% 6.65/7.07     2 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( Y, Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  parent0: (7384) {G0,W9,D2,L3,V3,M3}  { ! convergent_lines( X, Y ), 
% 6.65/7.07    convergent_lines( X, Z ), convergent_lines( Y, Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 2
% 6.65/7.07     1 ==> 0
% 6.65/7.07     2 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (12) {G0,W9,D2,L3,V3,M2} I { distinct_lines( Y, Z ), 
% 6.65/7.07    apart_point_and_line( X, Z ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.07  parent0: (7391) {G0,W9,D2,L3,V3,M3}  { ! apart_point_and_line( X, Y ), 
% 6.65/7.07    distinct_lines( Y, Z ), apart_point_and_line( X, Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 2
% 6.65/7.07     1 ==> 0
% 6.65/7.07     2 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (14) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), ! 
% 6.65/7.07    distinct_lines( X, Y ) }.
% 6.65/7.07  parent0: (7393) {G0,W6,D2,L2,V2,M2}  { ! distinct_lines( X, Y ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (15) {G0,W5,D3,L1,V2,M1} I { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, X ), Y ) }.
% 6.65/7.07  parent0: (7394) {G0,W5,D3,L1,V2,M1}  { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, X ), Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (16) {G0,W5,D3,L1,V2,M1} I { ! apart_point_and_line( X, 
% 6.65/7.07    parallel_through_point( Y, X ) ) }.
% 6.65/7.07  parent0: (7395) {G0,W5,D3,L1,V2,M1}  { ! apart_point_and_line( X, 
% 6.65/7.07    parallel_through_point( Y, X ) ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (17) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( X, Y ) }.
% 6.65/7.07  parent0: (7397) {G0,W6,D2,L2,V2,M2}  { convergent_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (19) {G0,W12,D2,L4,V3,M1} I { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), unorthogonal_lines( Y, Z ), alpha1( X, Z )
% 6.65/7.07     }.
% 6.65/7.07  parent0: (7399) {G0,W12,D2,L4,V3,M4}  { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), alpha1( X, Z ), unorthogonal_lines( Y, Z )
% 6.65/7.07     }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07     2 ==> 3
% 6.65/7.07     3 ==> 2
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (20) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), ! 
% 6.65/7.07    alpha1( X, Y ) }.
% 6.65/7.07  parent0: (7400) {G0,W6,D2,L2,V2,M2}  { ! alpha1( X, Y ), convergent_lines( 
% 6.65/7.07    X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (23) {G0,W5,D3,L1,V2,M1} I { ! unorthogonal_lines( 
% 6.65/7.07    orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.07  parent0: (7403) {G0,W5,D3,L1,V2,M1}  { ! unorthogonal_lines( 
% 6.65/7.07    orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (31) {G0,W9,D2,L3,V3,M2} I { ! convergent_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( Z, X ), unorthogonal_lines( Z, Y ) }.
% 6.65/7.07  parent0: (7412) {G0,W9,D2,L3,V3,M3}  { unorthogonal_lines( Z, X ), 
% 6.65/7.07    unorthogonal_lines( Z, Y ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 2
% 6.65/7.07     2 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (43) {G0,W6,D2,L2,V2,M1} I { apart_point_and_line( X, Y ), 
% 6.65/7.07    incident_point_and_line( X, Y ) }.
% 6.65/7.07  parent0: (7424) {G0,W6,D2,L2,V2,M2}  { apart_point_and_line( X, Y ), 
% 6.65/7.07    incident_point_and_line( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (50) {G0,W10,D3,L2,V0,M1} I { ! incident_point_and_line( skol3
% 6.65/7.07    , line_connecting( skol1, skol2 ) ), ! incident_point_and_line( skol4, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  parent0: (7431) {G0,W10,D3,L2,V0,M2}  { ! incident_point_and_line( skol3, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ), ! incident_point_and_line( skol4, 
% 6.65/7.07    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7556) {G1,W6,D2,L2,V2,M2}  { distinct_lines( Y, X ), ! 
% 6.65/7.07    distinct_lines( X, Y ) }.
% 6.65/7.07  parent0[0]: (1) {G0,W3,D2,L1,V1,M1} I { ! distinct_lines( X, X ) }.
% 6.65/7.07  parent1[0]: (4) {G0,W9,D2,L3,V3,M3} I { distinct_lines( X, Z ), 
% 6.65/7.07    distinct_lines( Y, Z ), ! distinct_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (58) {G1,W6,D2,L2,V2,M2} R(4,1) { ! distinct_lines( Y, X ), 
% 6.65/7.07    distinct_lines( X, Y ) }.
% 6.65/7.07  parent0: (7556) {G1,W6,D2,L2,V2,M2}  { distinct_lines( Y, X ), ! 
% 6.65/7.07    distinct_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7558) {G1,W8,D3,L2,V3,M2}  { convergent_lines( Z, X ), ! 
% 6.65/7.07    convergent_lines( parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  parent0[0]: (15) {G0,W5,D3,L1,V2,M1} I { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, X ), Y ) }.
% 6.65/7.07  parent1[0]: (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( Y, Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := parallel_through_point( X, Y )
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (67) {G1,W8,D3,L2,V3,M2} R(5,15) { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, Z ), X ), convergent_lines( X, Y ) }.
% 6.65/7.07  parent0: (7558) {G1,W8,D3,L2,V3,M2}  { convergent_lines( Z, X ), ! 
% 6.65/7.07    convergent_lines( parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7560) {G1,W6,D2,L2,V2,M2}  { convergent_lines( Y, X ), ! 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  parent0[0]: (2) {G0,W3,D2,L1,V1,M1} I { ! convergent_lines( X, X ) }.
% 6.65/7.07  parent1[0]: (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( Y, Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  parent0: (7560) {G1,W6,D2,L2,V2,M2}  { convergent_lines( Y, X ), ! 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7562) {G1,W5,D3,L1,V2,M1}  { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  parent0[0]: (15) {G0,W5,D3,L1,V2,M1} I { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, X ), Y ) }.
% 6.65/7.07  parent1[1]: (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := parallel_through_point( X, Y )
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (72) {G2,W5,D3,L1,V2,M1} R(69,15) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  parent0: (7562) {G1,W5,D3,L1,V2,M1}  { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7563) {G1,W8,D3,L2,V3,M2}  { convergent_lines( Z, 
% 6.65/7.07    parallel_through_point( X, Y ) ), ! convergent_lines( X, Z ) }.
% 6.65/7.07  parent0[0]: (72) {G2,W5,D3,L1,V2,M1} R(69,15) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  parent1[0]: (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( Y, Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := parallel_through_point( X, Y )
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (73) {G3,W8,D3,L2,V3,M2} R(72,5) { ! convergent_lines( Y, X )
% 6.65/7.07    , convergent_lines( X, parallel_through_point( Y, Z ) ) }.
% 6.65/7.07  parent0: (7563) {G1,W8,D3,L2,V3,M2}  { convergent_lines( Z, 
% 6.65/7.07    parallel_through_point( X, Y ) ), ! convergent_lines( X, Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7566) {G1,W8,D3,L2,V3,M2}  { convergent_lines( Z, 
% 6.65/7.07    parallel_through_point( X, Y ) ), ! convergent_lines( Z, X ) }.
% 6.65/7.07  parent0[0]: (72) {G2,W5,D3,L1,V2,M1} R(69,15) { ! convergent_lines( X, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  parent1[1]: (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( Y, Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := Z
% 6.65/7.07     Y := X
% 6.65/7.07     Z := parallel_through_point( X, Y )
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (74) {G3,W8,D3,L2,V3,M2} R(72,5) { ! convergent_lines( X, Y )
% 6.65/7.07    , convergent_lines( X, parallel_through_point( Y, Z ) ) }.
% 6.65/7.07  parent0: (7566) {G1,W8,D3,L2,V3,M2}  { convergent_lines( Z, 
% 6.65/7.07    parallel_through_point( X, Y ) ), ! convergent_lines( Z, X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7567) {G1,W5,D3,L1,V2,M1}  { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), X ) }.
% 6.65/7.07  parent0[0]: (23) {G0,W5,D3,L1,V2,M1} I { ! unorthogonal_lines( 
% 6.65/7.07    orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.07  parent1[1]: (17) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := orthogonal_through_point( X, Y )
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (105) {G1,W5,D3,L1,V2,M1} R(17,23) { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), X ) }.
% 6.65/7.07  parent0: (7567) {G1,W5,D3,L1,V2,M1}  { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7568) {G1,W8,D3,L2,V3,M2}  { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), Z ), convergent_lines( X, Z ) }.
% 6.65/7.07  parent0[2]: (5) {G0,W9,D2,L3,V3,M3} I { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( Y, Z ), ! convergent_lines( X, Y ) }.
% 6.65/7.07  parent1[0]: (105) {G1,W5,D3,L1,V2,M1} R(17,23) { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := orthogonal_through_point( X, Y )
% 6.65/7.07     Y := X
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (107) {G2,W8,D3,L2,V3,M2} R(105,5) { convergent_lines( X, Z )
% 6.65/7.07    , convergent_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  parent0: (7568) {G1,W8,D3,L2,V3,M2}  { convergent_lines( 
% 6.65/7.07    orthogonal_through_point( X, Y ), Z ), convergent_lines( X, Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7569) {G1,W6,D2,L2,V2,M2}  { convergent_lines( X, Y ), ! 
% 6.65/7.07    distinct_lines( Y, X ) }.
% 6.65/7.07  parent0[1]: (14) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), ! 
% 6.65/7.07    distinct_lines( X, Y ) }.
% 6.65/7.07  parent1[1]: (58) {G1,W6,D2,L2,V2,M2} R(4,1) { ! distinct_lines( Y, X ), 
% 6.65/7.07    distinct_lines( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (121) {G2,W6,D2,L2,V2,M1} R(14,58) { convergent_lines( X, Y )
% 6.65/7.07    , ! distinct_lines( Y, X ) }.
% 6.65/7.07  parent0: (7569) {G1,W6,D2,L2,V2,M2}  { convergent_lines( X, Y ), ! 
% 6.65/7.07    distinct_lines( Y, X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7570) {G1,W12,D2,L4,V4,M4}  { distinct_lines( X, Y ), 
% 6.65/7.07    apart_point_and_line( Z, Y ), distinct_lines( T, X ), ! 
% 6.65/7.07    apart_point_and_line( Z, T ) }.
% 6.65/7.07  parent0[2]: (12) {G0,W9,D2,L3,V3,M2} I { distinct_lines( Y, Z ), 
% 6.65/7.07    apart_point_and_line( X, Z ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.07  parent1[1]: (12) {G0,W9,D2,L3,V3,M2} I { distinct_lines( Y, Z ), 
% 6.65/7.07    apart_point_and_line( X, Z ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Z
% 6.65/7.07     Y := X
% 6.65/7.07     Z := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := Z
% 6.65/7.07     Y := T
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (128) {G1,W12,D2,L4,V4,M2} R(12,12) { distinct_lines( X, Y ), 
% 6.65/7.07    distinct_lines( Y, T ), apart_point_and_line( Z, T ), ! 
% 6.65/7.07    apart_point_and_line( Z, X ) }.
% 6.65/7.07  parent0: (7570) {G1,W12,D2,L4,V4,M4}  { distinct_lines( X, Y ), 
% 6.65/7.07    apart_point_and_line( Z, Y ), distinct_lines( T, X ), ! 
% 6.65/7.07    apart_point_and_line( Z, T ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := T
% 6.65/7.07     Z := Z
% 6.65/7.07     T := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 2
% 6.65/7.07     2 ==> 0
% 6.65/7.07     3 ==> 3
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7572) {G1,W8,D3,L2,V3,M2}  { distinct_lines( Z, 
% 6.65/7.07    parallel_through_point( Y, X ) ), ! apart_point_and_line( X, Z ) }.
% 6.65/7.07  parent0[0]: (16) {G0,W5,D3,L1,V2,M1} I { ! apart_point_and_line( X, 
% 6.65/7.07    parallel_through_point( Y, X ) ) }.
% 6.65/7.07  parent1[1]: (12) {G0,W9,D2,L3,V3,M2} I { distinct_lines( Y, Z ), 
% 6.65/7.07    apart_point_and_line( X, Z ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := parallel_through_point( Y, X )
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (140) {G1,W8,D3,L2,V3,M1} R(12,16) { distinct_lines( X, 
% 6.65/7.07    parallel_through_point( Y, Z ) ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.07  parent0: (7572) {G1,W8,D3,L2,V3,M2}  { distinct_lines( Z, 
% 6.65/7.07    parallel_through_point( Y, X ) ), ! apart_point_and_line( X, Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Z
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7573) {G2,W8,D3,L2,V3,M2}  { convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( orthogonal_through_point( X, Z ), Y ) }.
% 6.65/7.07  parent0[0]: (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  parent1[0]: (107) {G2,W8,D3,L2,V3,M2} R(105,5) { convergent_lines( X, Z ), 
% 6.65/7.07    convergent_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := X
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := Y
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (165) {G3,W8,D3,L2,V3,M2} R(107,69) { convergent_lines( Z, X )
% 6.65/7.07    , convergent_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  parent0: (7573) {G2,W8,D3,L2,V3,M2}  { convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( orthogonal_through_point( X, Z ), Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7576) {G1,W12,D2,L4,V3,M4}  { convergent_lines( X, Y ), ! 
% 6.65/7.07    convergent_lines( X, Z ), ! unorthogonal_lines( X, Z ), 
% 6.65/7.07    unorthogonal_lines( Z, Y ) }.
% 6.65/7.07  parent0[1]: (20) {G0,W6,D2,L2,V2,M1} I { convergent_lines( X, Y ), ! alpha1
% 6.65/7.07    ( X, Y ) }.
% 6.65/7.07  parent1[3]: (19) {G0,W12,D2,L4,V3,M1} I { ! convergent_lines( X, Y ), ! 
% 6.65/7.07    unorthogonal_lines( X, Y ), unorthogonal_lines( Y, Z ), alpha1( X, Z )
% 6.65/7.07     }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := Y
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (170) {G1,W12,D2,L4,V3,M2} R(19,20) { ! convergent_lines( X, Y
% 6.65/7.07     ), convergent_lines( X, Z ), ! unorthogonal_lines( X, Y ), 
% 6.65/7.07    unorthogonal_lines( Y, Z ) }.
% 6.65/7.07  parent0: (7576) {G1,W12,D2,L4,V3,M4}  { convergent_lines( X, Y ), ! 
% 6.65/7.07    convergent_lines( X, Z ), ! unorthogonal_lines( X, Z ), 
% 6.65/7.07    unorthogonal_lines( Z, Y ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07     2 ==> 2
% 6.65/7.07     3 ==> 3
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7578) {G2,W8,D3,L2,V3,M2}  { convergent_lines( Z, 
% 6.65/7.07    orthogonal_through_point( X, Y ) ), convergent_lines( Z, X ) }.
% 6.65/7.07  parent0[0]: (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.07    convergent_lines( X, Y ) }.
% 6.65/7.07  parent1[1]: (165) {G3,W8,D3,L2,V3,M2} R(107,69) { convergent_lines( Z, X )
% 6.65/7.07    , convergent_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Z
% 6.65/7.07     Y := orthogonal_through_point( X, Y )
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := X
% 6.65/7.07     Y := Y
% 6.65/7.07     Z := Z
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (178) {G4,W8,D3,L2,V3,M2} R(165,69) { convergent_lines( X, 
% 6.65/7.07    orthogonal_through_point( Y, Z ) ), convergent_lines( X, Y ) }.
% 6.65/7.07  parent0: (7578) {G2,W8,D3,L2,V3,M2}  { convergent_lines( Z, 
% 6.65/7.07    orthogonal_through_point( X, Y ) ), convergent_lines( Z, X ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Y
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := X
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 0
% 6.65/7.07     1 ==> 1
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7579) {G2,W10,D3,L2,V4,M2}  { convergent_lines( 
% 6.65/7.07    parallel_through_point( Z, T ), X ), ! convergent_lines( 
% 6.65/7.07    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  parent0[0]: (67) {G1,W8,D3,L2,V3,M2} R(5,15) { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Y, Z ), X ), convergent_lines( X, Y ) }.
% 6.65/7.07  parent1[1]: (74) {G3,W8,D3,L2,V3,M2} R(72,5) { ! convergent_lines( X, Y ), 
% 6.65/7.07    convergent_lines( X, parallel_through_point( Y, Z ) ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := parallel_through_point( Z, T )
% 6.65/7.07     Y := X
% 6.65/7.07     Z := Y
% 6.65/7.07  end
% 6.65/7.07  substitution1:
% 6.65/7.07     X := parallel_through_point( X, Y )
% 6.65/7.07     Y := Z
% 6.65/7.07     Z := T
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  subsumption: (236) {G4,W10,D3,L2,V4,M2} R(67,74) { ! convergent_lines( 
% 6.65/7.07    parallel_through_point( Z, T ), X ), convergent_lines( 
% 6.65/7.07    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  parent0: (7579) {G2,W10,D3,L2,V4,M2}  { convergent_lines( 
% 6.65/7.07    parallel_through_point( Z, T ), X ), ! convergent_lines( 
% 6.65/7.07    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.07  substitution0:
% 6.65/7.07     X := Z
% 6.65/7.07     Y := T
% 6.65/7.07     Z := X
% 6.65/7.07     T := Y
% 6.65/7.07  end
% 6.65/7.07  permutation0:
% 6.65/7.07     0 ==> 1
% 6.65/7.07     1 ==> 0
% 6.65/7.07  end
% 6.65/7.07  
% 6.65/7.07  resolution: (7580) {G2,W10,D3,L2,V4,M2}  { convergent_lines( 
% 6.65/7.07    parallel_through_point( Z, T ), X ), ! convergent_lines( Z, 
% 6.65/7.07    parallel_through_point( X, Y ) ) }.
% 6.65/7.07  parent0[0]: (67) {G1,W8,D3,L2,V3,M2} R(5,15) { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), convergent_lines( X, Y ) }.
% 6.65/7.08  parent1[1]: (73) {G3,W8,D3,L2,V3,M2} R(72,5) { ! convergent_lines( Y, X ), 
% 6.65/7.08    convergent_lines( X, parallel_through_point( Y, Z ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( Z, T )
% 6.65/7.08     Y := X
% 6.65/7.08     Z := Y
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := parallel_through_point( X, Y )
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := T
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (240) {G4,W10,D3,L2,V4,M2} R(67,73) { ! convergent_lines( X, 
% 6.65/7.08    parallel_through_point( Z, T ) ), convergent_lines( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.08  parent0: (7580) {G2,W10,D3,L2,V4,M2}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( Z, T ), X ), ! convergent_lines( Z, 
% 6.65/7.08    parallel_through_point( X, Y ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Z
% 6.65/7.08     Y := T
% 6.65/7.08     Z := X
% 6.65/7.08     T := Y
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7582) {G2,W8,D3,L2,V3,M2}  { convergent_lines( Y, X ), ! 
% 6.65/7.08    convergent_lines( parallel_through_point( Y, Z ), X ) }.
% 6.65/7.08  parent0[0]: (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.08    convergent_lines( X, Y ) }.
% 6.65/7.08  parent1[1]: (67) {G1,W8,D3,L2,V3,M2} R(5,15) { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), convergent_lines( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (244) {G2,W8,D3,L2,V3,M2} R(67,69) { convergent_lines( X, Z )
% 6.65/7.08    , ! convergent_lines( parallel_through_point( X, Y ), Z ) }.
% 6.65/7.08  parent0: (7582) {G2,W8,D3,L2,V3,M2}  { convergent_lines( Y, X ), ! 
% 6.65/7.08    convergent_lines( parallel_through_point( Y, Z ), X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Z
% 6.65/7.08     Y := X
% 6.65/7.08     Z := Y
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7583) {G2,W8,D3,L2,V3,M2}  { convergent_lines( X, Y ), ! 
% 6.65/7.08    convergent_lines( Y, parallel_through_point( X, Z ) ) }.
% 6.65/7.08  parent0[1]: (244) {G2,W8,D3,L2,V3,M2} R(67,69) { convergent_lines( X, Z ), 
% 6.65/7.08    ! convergent_lines( parallel_through_point( X, Y ), Z ) }.
% 6.65/7.08  parent1[1]: (69) {G1,W6,D2,L2,V2,M2} R(5,2) { ! convergent_lines( Y, X ), 
% 6.65/7.08    convergent_lines( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := Y
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := parallel_through_point( X, Z )
% 6.65/7.08     Y := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (256) {G3,W8,D3,L2,V3,M2} R(244,69) { ! convergent_lines( Y, 
% 6.65/7.08    parallel_through_point( X, Z ) ), convergent_lines( X, Y ) }.
% 6.65/7.08  parent0: (7583) {G2,W8,D3,L2,V3,M2}  { convergent_lines( X, Y ), ! 
% 6.65/7.08    convergent_lines( Y, parallel_through_point( X, Z ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7585) {G1,W8,D3,L2,V3,M2}  { ! convergent_lines( Z, X ), 
% 6.65/7.08    unorthogonal_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.08  parent0[0]: (23) {G0,W5,D3,L1,V2,M1} I { ! unorthogonal_lines( 
% 6.65/7.08    orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.08  parent1[2]: (31) {G0,W9,D2,L3,V3,M2} I { ! convergent_lines( X, Y ), 
% 6.65/7.08    unorthogonal_lines( Z, X ), unorthogonal_lines( Z, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := Z
% 6.65/7.08     Y := X
% 6.65/7.08     Z := orthogonal_through_point( X, Y )
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (271) {G1,W8,D3,L2,V3,M1} R(31,23) { ! convergent_lines( X, Y
% 6.65/7.08     ), unorthogonal_lines( orthogonal_through_point( Y, Z ), X ) }.
% 6.65/7.08  parent0: (7585) {G1,W8,D3,L2,V3,M2}  { ! convergent_lines( Z, X ), 
% 6.65/7.08    unorthogonal_lines( orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7587) {G1,W10,D3,L2,V0,M2}  { ! incident_point_and_line( skol3
% 6.65/7.08    , line_connecting( skol1, skol2 ) ), apart_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0[1]: (50) {G0,W10,D3,L2,V0,M1} I { ! incident_point_and_line( skol3
% 6.65/7.08    , line_connecting( skol1, skol2 ) ), ! incident_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent1[1]: (43) {G0,W6,D2,L2,V2,M1} I { apart_point_and_line( X, Y ), 
% 6.65/7.08    incident_point_and_line( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := skol4
% 6.65/7.08     Y := line_connecting( skol1, skol2 )
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (347) {G1,W10,D3,L2,V0,M1} R(50,43) { apart_point_and_line( 
% 6.65/7.08    skol4, line_connecting( skol1, skol2 ) ), ! incident_point_and_line( 
% 6.65/7.08    skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0: (7587) {G1,W10,D3,L2,V0,M2}  { ! incident_point_and_line( skol3, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ), apart_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7588) {G1,W10,D3,L2,V0,M2}  { apart_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ), apart_point_and_line( skol3, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0[1]: (347) {G1,W10,D3,L2,V0,M1} R(50,43) { apart_point_and_line( 
% 6.65/7.08    skol4, line_connecting( skol1, skol2 ) ), ! incident_point_and_line( 
% 6.65/7.08    skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent1[1]: (43) {G0,W6,D2,L2,V2,M1} I { apart_point_and_line( X, Y ), 
% 6.65/7.08    incident_point_and_line( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := skol3
% 6.65/7.08     Y := line_connecting( skol1, skol2 )
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (1222) {G2,W10,D3,L2,V0,M1} R(347,43) { apart_point_and_line( 
% 6.65/7.08    skol3, line_connecting( skol1, skol2 ) ), apart_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0: (7588) {G1,W10,D3,L2,V0,M2}  { apart_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ), apart_point_and_line( skol3, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7590) {G1,W13,D3,L3,V1,M3}  { distinct_lines( line_connecting
% 6.65/7.08    ( skol1, skol2 ), X ), apart_point_and_line( skol4, X ), 
% 6.65/7.08    apart_point_and_line( skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0[2]: (12) {G0,W9,D2,L3,V3,M2} I { distinct_lines( Y, Z ), 
% 6.65/7.08    apart_point_and_line( X, Z ), ! apart_point_and_line( X, Y ) }.
% 6.65/7.08  parent1[1]: (1222) {G2,W10,D3,L2,V0,M1} R(347,43) { apart_point_and_line( 
% 6.65/7.08    skol3, line_connecting( skol1, skol2 ) ), apart_point_and_line( skol4, 
% 6.65/7.08    line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := skol4
% 6.65/7.08     Y := line_connecting( skol1, skol2 )
% 6.65/7.08     Z := X
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (1225) {G3,W13,D3,L3,V1,M2} R(1222,12) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), X ), apart_point_and_line( skol4, X ), 
% 6.65/7.08    apart_point_and_line( skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0: (7590) {G1,W13,D3,L3,V1,M3}  { distinct_lines( line_connecting( 
% 6.65/7.08    skol1, skol2 ), X ), apart_point_and_line( skol4, X ), 
% 6.65/7.08    apart_point_and_line( skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08     2 ==> 2
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7591) {G2,W14,D3,L4,V5,M4}  { distinct_lines( X, 
% 6.65/7.08    parallel_through_point( Y, Z ) ), distinct_lines( T, U ), distinct_lines
% 6.65/7.08    ( U, X ), ! apart_point_and_line( Z, T ) }.
% 6.65/7.08  parent0[1]: (140) {G1,W8,D3,L2,V3,M1} R(12,16) { distinct_lines( X, 
% 6.65/7.08    parallel_through_point( Y, Z ) ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  parent1[2]: (128) {G1,W12,D2,L4,V4,M2} R(12,12) { distinct_lines( X, Y ), 
% 6.65/7.08    distinct_lines( Y, T ), apart_point_and_line( Z, T ), ! 
% 6.65/7.08    apart_point_and_line( Z, X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := T
% 6.65/7.08     Y := U
% 6.65/7.08     Z := Z
% 6.65/7.08     T := X
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (2159) {G2,W14,D3,L4,V5,M1} R(128,140) { distinct_lines( X, Y
% 6.65/7.08     ), distinct_lines( Y, Z ), distinct_lines( Z, parallel_through_point( U
% 6.65/7.08    , T ) ), ! apart_point_and_line( T, X ) }.
% 6.65/7.08  parent0: (7591) {G2,W14,D3,L4,V5,M4}  { distinct_lines( X, 
% 6.65/7.08    parallel_through_point( Y, Z ) ), distinct_lines( T, U ), distinct_lines
% 6.65/7.08    ( U, X ), ! apart_point_and_line( Z, T ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Z
% 6.65/7.08     Y := U
% 6.65/7.08     Z := T
% 6.65/7.08     T := X
% 6.65/7.08     U := Y
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 2
% 6.65/7.08     1 ==> 0
% 6.65/7.08     2 ==> 1
% 6.65/7.08     3 ==> 3
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  factor: (7597) {G2,W13,D3,L3,V3,M3}  { distinct_lines( X, 
% 6.65/7.08    parallel_through_point( Y, Z ) ), distinct_lines( parallel_through_point
% 6.65/7.08    ( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  parent0[0, 2]: (2159) {G2,W14,D3,L4,V5,M1} R(128,140) { distinct_lines( X, 
% 6.65/7.08    Y ), distinct_lines( Y, Z ), distinct_lines( Z, parallel_through_point( U
% 6.65/7.08    , T ) ), ! apart_point_and_line( T, X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := parallel_through_point( Y, Z )
% 6.65/7.08     Z := X
% 6.65/7.08     T := Z
% 6.65/7.08     U := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7603) {G2,W13,D3,L3,V3,M3}  { distinct_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), distinct_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  parent0[0]: (58) {G1,W6,D2,L2,V2,M2} R(4,1) { ! distinct_lines( Y, X ), 
% 6.65/7.08    distinct_lines( X, Y ) }.
% 6.65/7.08  parent1[0]: (7597) {G2,W13,D3,L3,V3,M3}  { distinct_lines( X, 
% 6.65/7.08    parallel_through_point( Y, Z ) ), distinct_lines( parallel_through_point
% 6.65/7.08    ( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( Y, Z )
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  factor: (7605) {G2,W8,D3,L2,V3,M2}  { distinct_lines( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ), ! apart_point_and_line( Y, Z ) }.
% 6.65/7.08  parent0[0, 1]: (7603) {G2,W13,D3,L3,V3,M3}  { distinct_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), distinct_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Z
% 6.65/7.08     Y := X
% 6.65/7.08     Z := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (2167) {G3,W8,D3,L2,V3,M1} F(2159);r(58) { distinct_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  parent0: (7605) {G2,W8,D3,L2,V3,M2}  { distinct_lines( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ), ! apart_point_and_line( Y, Z ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7607) {G1,W13,D3,L3,V3,M3}  { ! convergent_lines( Z, 
% 6.65/7.08    orthogonal_through_point( X, Y ) ), convergent_lines( Z, X ), ! 
% 6.65/7.08    unorthogonal_lines( Z, orthogonal_through_point( X, Y ) ) }.
% 6.65/7.08  parent0[0]: (23) {G0,W5,D3,L1,V2,M1} I { ! unorthogonal_lines( 
% 6.65/7.08    orthogonal_through_point( Y, X ), Y ) }.
% 6.65/7.08  parent1[3]: (170) {G1,W12,D2,L4,V3,M2} R(19,20) { ! convergent_lines( X, Y
% 6.65/7.08     ), convergent_lines( X, Z ), ! unorthogonal_lines( X, Y ), 
% 6.65/7.08    unorthogonal_lines( Y, Z ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := Z
% 6.65/7.08     Y := orthogonal_through_point( X, Y )
% 6.65/7.08     Z := X
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7608) {G2,W11,D3,L3,V3,M3}  { convergent_lines( X, Y ), ! 
% 6.65/7.08    unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ), 
% 6.65/7.08    convergent_lines( X, Y ) }.
% 6.65/7.08  parent0[0]: (7607) {G1,W13,D3,L3,V3,M3}  { ! convergent_lines( Z, 
% 6.65/7.08    orthogonal_through_point( X, Y ) ), convergent_lines( Z, X ), ! 
% 6.65/7.08    unorthogonal_lines( Z, orthogonal_through_point( X, Y ) ) }.
% 6.65/7.08  parent1[0]: (178) {G4,W8,D3,L2,V3,M2} R(165,69) { convergent_lines( X, 
% 6.65/7.08    orthogonal_through_point( Y, Z ) ), convergent_lines( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := X
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  factor: (7609) {G2,W8,D3,L2,V3,M2}  { convergent_lines( X, Y ), ! 
% 6.65/7.08    unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ) }.
% 6.65/7.08  parent0[0, 2]: (7608) {G2,W11,D3,L3,V3,M3}  { convergent_lines( X, Y ), ! 
% 6.65/7.08    unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ), 
% 6.65/7.08    convergent_lines( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (2657) {G5,W8,D3,L2,V3,M1} R(170,23);r(178) { convergent_lines
% 6.65/7.08    ( X, Y ), ! unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ) }.
% 6.65/7.08  parent0: (7609) {G2,W8,D3,L2,V3,M2}  { convergent_lines( X, Y ), ! 
% 6.65/7.08    unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7610) {G2,W10,D3,L2,V4,M2}  { convergent_lines( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( Z, T ), X ) }.
% 6.65/7.08  parent0[1]: (2657) {G5,W8,D3,L2,V3,M1} R(170,23);r(178) { convergent_lines
% 6.65/7.08    ( X, Y ), ! unorthogonal_lines( X, orthogonal_through_point( Y, Z ) ) }.
% 6.65/7.08  parent1[1]: (271) {G1,W8,D3,L2,V3,M1} R(31,23) { ! convergent_lines( X, Y )
% 6.65/7.08    , unorthogonal_lines( orthogonal_through_point( Y, Z ), X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := orthogonal_through_point( X, Y )
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := T
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := orthogonal_through_point( Z, T )
% 6.65/7.08     Y := X
% 6.65/7.08     Z := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (2664) {G6,W10,D3,L2,V4,M2} R(2657,271) { ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( Z, T ), X ), convergent_lines( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.08  parent0: (7610) {G2,W10,D3,L2,V4,M2}  { convergent_lines( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( Z, T ), X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08     T := T
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7611) {G1,W7,D4,L1,V3,M1}  { ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( orthogonal_through_point( X, Y ), Z ), X ) }.
% 6.65/7.08  parent0[0]: (2) {G0,W3,D2,L1,V1,M1} I { ! convergent_lines( X, X ) }.
% 6.65/7.08  parent1[1]: (2664) {G6,W10,D3,L2,V4,M2} R(2657,271) { ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( Z, T ), X ), convergent_lines( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := orthogonal_through_point( X, Y )
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := orthogonal_through_point( X, Y )
% 6.65/7.08     T := Z
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (2833) {G7,W7,D4,L1,V3,M1} R(2664,2) { ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( orthogonal_through_point( X, Y ), Z ), X ) }.
% 6.65/7.08  parent0: (7611) {G1,W7,D4,L1,V3,M1}  { ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( orthogonal_through_point( X, Y ), Z ), X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7612) {G4,W9,D5,L1,V4,M1}  { ! convergent_lines( X, 
% 6.65/7.08    parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), T ) ) }.
% 6.65/7.08  parent0[0]: (2833) {G7,W7,D4,L1,V3,M1} R(2664,2) { ! convergent_lines( 
% 6.65/7.08    orthogonal_through_point( orthogonal_through_point( X, Y ), Z ), X ) }.
% 6.65/7.08  parent1[1]: (256) {G3,W8,D3,L2,V3,M2} R(244,69) { ! convergent_lines( Y, 
% 6.65/7.08    parallel_through_point( X, Z ) ), convergent_lines( X, Y ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := orthogonal_through_point( orthogonal_through_point( X, Y ), Z )
% 6.65/7.08     Y := X
% 6.65/7.08     Z := T
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (2931) {G8,W9,D5,L1,V4,M1} R(2833,256) { ! convergent_lines( X
% 6.65/7.08    , parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), T ) ) }.
% 6.65/7.08  parent0: (7612) {G4,W9,D5,L1,V4,M1}  { ! convergent_lines( X, 
% 6.65/7.08    parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), T ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08     T := T
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7613) {G5,W13,D7,L1,V6,M1}  { ! convergent_lines( X, 
% 6.65/7.08    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.08    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08    , W ) ) }.
% 6.65/7.08  parent0[0]: (2931) {G8,W9,D5,L1,V4,M1} R(2833,256) { ! convergent_lines( X
% 6.65/7.08    , parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), T ) ) }.
% 6.65/7.08  parent1[1]: (240) {G4,W10,D3,L2,V4,M2} R(67,73) { ! convergent_lines( X, 
% 6.65/7.08    parallel_through_point( Z, T ) ), convergent_lines( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( X, Y )
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := T
% 6.65/7.08     T := U
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08     T := W
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (3323) {G9,W13,D7,L1,V6,M1} R(2931,240) { ! convergent_lines( 
% 6.65/7.08    X, parallel_through_point( parallel_through_point( 
% 6.65/7.08    orthogonal_through_point( orthogonal_through_point( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ), T ), U ), W ) ) }.
% 6.65/7.08  parent0: (7613) {G5,W13,D7,L1,V6,M1}  { ! convergent_lines( X, 
% 6.65/7.08    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.08    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08    , W ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08     T := T
% 6.65/7.08     U := U
% 6.65/7.08     W := W
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7614) {G5,W13,D7,L1,V6,M1}  { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.08    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08    , W ), X ) }.
% 6.65/7.08  parent0[0]: (2931) {G8,W9,D5,L1,V4,M1} R(2833,256) { ! convergent_lines( X
% 6.65/7.08    , parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( X, Y ), Z ), T ) ) }.
% 6.65/7.08  parent1[1]: (236) {G4,W10,D3,L2,V4,M2} R(67,74) { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( Z, T ), X ), convergent_lines( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( X, Y )
% 6.65/7.08     Y := Z
% 6.65/7.08     Z := T
% 6.65/7.08     T := U
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08     T := W
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (3325) {G9,W13,D7,L1,V6,M1} R(2931,236) { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.08    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08    , W ), X ) }.
% 6.65/7.08  parent0: (7614) {G5,W13,D7,L1,V6,M1}  { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.08    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08    , W ), X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08     T := T
% 6.65/7.08     U := U
% 6.65/7.08     W := W
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7616) {G2,W15,D3,L3,V2,M3}  { distinct_lines( line_connecting
% 6.65/7.08    ( skol1, skol2 ), parallel_through_point( X, skol3 ) ), distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), Y ), apart_point_and_line( skol4, Y )
% 6.65/7.08     }.
% 6.65/7.08  parent0[1]: (140) {G1,W8,D3,L2,V3,M1} R(12,16) { distinct_lines( X, 
% 6.65/7.08    parallel_through_point( Y, Z ) ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  parent1[2]: (1225) {G3,W13,D3,L3,V1,M2} R(1222,12) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), X ), apart_point_and_line( skol4, X ), 
% 6.65/7.08    apart_point_and_line( skol3, line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := line_connecting( skol1, skol2 )
% 6.65/7.08     Y := X
% 6.65/7.08     Z := skol3
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7298) {G4,W15,D3,L3,V2,M1} R(1225,140) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), X ), distinct_lines( line_connecting( 
% 6.65/7.08    skol1, skol2 ), parallel_through_point( Y, skol3 ) ), 
% 6.65/7.08    apart_point_and_line( skol4, X ) }.
% 6.65/7.08  parent0: (7616) {G2,W15,D3,L3,V2,M3}  { distinct_lines( line_connecting( 
% 6.65/7.08    skol1, skol2 ), parallel_through_point( X, skol3 ) ), distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), Y ), apart_point_and_line( skol4, Y )
% 6.65/7.08     }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08     2 ==> 2
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  factor: (7618) {G4,W12,D3,L2,V1,M2}  { distinct_lines( line_connecting( 
% 6.65/7.08    skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.08    apart_point_and_line( skol4, parallel_through_point( X, skol3 ) ) }.
% 6.65/7.08  parent0[0, 1]: (7298) {G4,W15,D3,L3,V2,M1} R(1225,140) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), X ), distinct_lines( line_connecting( 
% 6.65/7.08    skol1, skol2 ), parallel_through_point( Y, skol3 ) ), 
% 6.65/7.08    apart_point_and_line( skol4, X ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( X, skol3 )
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7299) {G5,W12,D3,L2,V1,M1} F(7298) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.08    apart_point_and_line( skol4, parallel_through_point( X, skol3 ) ) }.
% 6.65/7.08  parent0: (7618) {G4,W12,D3,L2,V1,M2}  { distinct_lines( line_connecting( 
% 6.65/7.08    skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.08    apart_point_and_line( skol4, parallel_through_point( X, skol3 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7619) {G4,W14,D3,L2,V2,M2}  { distinct_lines( 
% 6.65/7.08    parallel_through_point( X, skol4 ), parallel_through_point( Y, skol3 ) )
% 6.65/7.08    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.08    ( Y, skol3 ) ) }.
% 6.65/7.08  parent0[1]: (2167) {G3,W8,D3,L2,V3,M1} F(2159);r(58) { distinct_lines( 
% 6.65/7.08    parallel_through_point( Y, Z ), X ), ! apart_point_and_line( Z, X ) }.
% 6.65/7.08  parent1[1]: (7299) {G5,W12,D3,L2,V1,M1} F(7298) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.08    apart_point_and_line( skol4, parallel_through_point( X, skol3 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( Y, skol3 )
% 6.65/7.08     Y := X
% 6.65/7.08     Z := skol4
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7312) {G6,W14,D3,L2,V2,M1} R(7299,2167) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.08    distinct_lines( parallel_through_point( Y, skol4 ), 
% 6.65/7.08    parallel_through_point( X, skol3 ) ) }.
% 6.65/7.08  parent0: (7619) {G4,W14,D3,L2,V2,M2}  { distinct_lines( 
% 6.65/7.08    parallel_through_point( X, skol4 ), parallel_through_point( Y, skol3 ) )
% 6.65/7.08    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.08    ( Y, skol3 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := Y
% 6.65/7.08     Y := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 1
% 6.65/7.08     1 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7621) {G3,W14,D3,L2,V2,M2}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), parallel_through_point( Y, skol4 ) )
% 6.65/7.08    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.08    ( X, skol3 ) ) }.
% 6.65/7.08  parent0[1]: (121) {G2,W6,D2,L2,V2,M1} R(14,58) { convergent_lines( X, Y ), 
% 6.65/7.08    ! distinct_lines( Y, X ) }.
% 6.65/7.08  parent1[1]: (7312) {G6,W14,D3,L2,V2,M1} R(7299,2167) { distinct_lines( 
% 6.65/7.08    line_connecting( skol1, skol2 ), parallel_through_point( X, skol3 ) ), 
% 6.65/7.08    distinct_lines( parallel_through_point( Y, skol4 ), 
% 6.65/7.08    parallel_through_point( X, skol3 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( X, skol3 )
% 6.65/7.08     Y := parallel_through_point( Y, skol4 )
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7369) {G7,W14,D3,L2,V2,M1} R(7312,121) { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), parallel_through_point( Y, skol4 ) )
% 6.65/7.08    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.08    ( X, skol3 ) ) }.
% 6.65/7.08  parent0: (7621) {G3,W14,D3,L2,V2,M2}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), parallel_through_point( Y, skol4 ) )
% 6.65/7.08    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.08    ( X, skol3 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7622) {G3,W14,D3,L2,V2,M2}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ), 
% 6.65/7.08    convergent_lines( parallel_through_point( X, skol3 ), 
% 6.65/7.08    parallel_through_point( Y, skol4 ) ) }.
% 6.65/7.08  parent0[1]: (121) {G2,W6,D2,L2,V2,M1} R(14,58) { convergent_lines( X, Y ), 
% 6.65/7.08    ! distinct_lines( Y, X ) }.
% 6.65/7.08  parent1[1]: (7369) {G7,W14,D3,L2,V2,M1} R(7312,121) { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), parallel_through_point( Y, skol4 ) )
% 6.65/7.08    , distinct_lines( line_connecting( skol1, skol2 ), parallel_through_point
% 6.65/7.08    ( X, skol3 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( X, skol3 )
% 6.65/7.08     Y := line_connecting( skol1, skol2 )
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7371) {G8,W14,D3,L2,V2,M1} R(7369,121) { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ), 
% 6.65/7.08    convergent_lines( parallel_through_point( X, skol3 ), 
% 6.65/7.08    parallel_through_point( Y, skol4 ) ) }.
% 6.65/7.08  parent0: (7622) {G3,W14,D3,L2,V2,M2}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ), 
% 6.65/7.08    convergent_lines( parallel_through_point( X, skol3 ), 
% 6.65/7.08    parallel_through_point( Y, skol4 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08     Y := Y
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08     1 ==> 1
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7623) {G9,W7,D3,L1,V1,M1}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0[0]: (3323) {G9,W13,D7,L1,V6,M1} R(2931,240) { ! convergent_lines( X
% 6.65/7.08    , parallel_through_point( parallel_through_point( 
% 6.65/7.08    orthogonal_through_point( orthogonal_through_point( 
% 6.65/7.08    parallel_through_point( X, Y ), Z ), T ), U ), W ) ) }.
% 6.65/7.08  parent1[1]: (7371) {G8,W14,D3,L2,V2,M1} R(7369,121) { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ), 
% 6.65/7.08    convergent_lines( parallel_through_point( X, skol3 ), 
% 6.65/7.08    parallel_through_point( Y, skol4 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := parallel_through_point( X, skol3 )
% 6.65/7.08     Y := Y
% 6.65/7.08     Z := Z
% 6.65/7.08     T := T
% 6.65/7.08     U := U
% 6.65/7.08     W := skol4
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := X
% 6.65/7.08     Y := parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( parallel_through_point( parallel_through_point
% 6.65/7.08    ( X, skol3 ), Y ), Z ), T ), U )
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7376) {G10,W7,D3,L1,V1,M1} R(7371,3323) { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  parent0: (7623) {G9,W7,D3,L1,V1,M1}  { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := X
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08     0 ==> 0
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  resolution: (7624) {G10,W0,D0,L0,V0,M0}  {  }.
% 6.65/7.08  parent0[0]: (3325) {G9,W13,D7,L1,V6,M1} R(2931,236) { ! convergent_lines( 
% 6.65/7.08    parallel_through_point( parallel_through_point( orthogonal_through_point
% 6.65/7.08    ( orthogonal_through_point( parallel_through_point( X, Y ), Z ), T ), U )
% 6.65/7.08    , W ), X ) }.
% 6.65/7.08  parent1[0]: (7376) {G10,W7,D3,L1,V1,M1} R(7371,3323) { convergent_lines( 
% 6.65/7.08    parallel_through_point( X, skol3 ), line_connecting( skol1, skol2 ) ) }.
% 6.65/7.08  substitution0:
% 6.65/7.08     X := line_connecting( skol1, skol2 )
% 6.65/7.08     Y := X
% 6.65/7.08     Z := Y
% 6.65/7.08     T := Z
% 6.65/7.08     U := T
% 6.65/7.08     W := skol3
% 6.65/7.08  end
% 6.65/7.08  substitution1:
% 6.65/7.08     X := parallel_through_point( orthogonal_through_point( 
% 6.65/7.08    orthogonal_through_point( parallel_through_point( line_connecting( skol1
% 6.65/7.08    , skol2 ), X ), Y ), Z ), T )
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  subsumption: (7377) {G11,W0,D0,L0,V0,M0} R(7376,3325) {  }.
% 6.65/7.08  parent0: (7624) {G10,W0,D0,L0,V0,M0}  {  }.
% 6.65/7.08  substitution0:
% 6.65/7.08  end
% 6.65/7.08  permutation0:
% 6.65/7.08  end
% 6.65/7.08  
% 6.65/7.08  Proof check complete!
% 6.65/7.08  
% 6.65/7.08  Memory use:
% 6.65/7.08  
% 6.65/7.08  space for terms:        107006
% 6.65/7.08  space for clauses:      324201
% 6.65/7.08  
% 6.65/7.08  
% 6.65/7.08  clauses generated:      1242553
% 6.65/7.08  clauses kept:           7378
% 6.65/7.08  clauses selected:       3261
% 6.65/7.08  clauses deleted:        89
% 6.65/7.08  clauses inuse deleted:  3
% 6.65/7.08  
% 6.65/7.08  subsentry:          8872538
% 6.65/7.08  literals s-matched: 3519556
% 6.65/7.08  literals matched:   3519057
% 6.65/7.08  full subsumption:   2478850
% 6.65/7.08  
% 6.65/7.08  checksum:           2037774553
% 6.65/7.08  
% 6.65/7.08  
% 6.65/7.08  Bliksem ended
%------------------------------------------------------------------------------