TSTP Solution File: GEO268+3 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : GEO268+3 : TPTP v8.1.0. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n024.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 600s
% DateTime : Sat Jul 16 05:55:41 EDT 2022

% Result   : Theorem 0.45s 1.04s
% Output   : Refutation 0.45s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.10/0.12  % Problem  : GEO268+3 : TPTP v8.1.0. Released v4.0.0.
% 0.10/0.13  % Command  : tptp2X_and_run_prover9 %d %s
% 0.14/0.34  % Computer : n024.cluster.edu
% 0.14/0.34  % Model    : x86_64 x86_64
% 0.14/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.34  % Memory   : 8042.1875MB
% 0.14/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.34  % CPULimit : 300
% 0.14/0.34  % WCLimit  : 600
% 0.14/0.34  % DateTime : Sat Jun 18 12:22:32 EDT 2022
% 0.14/0.34  % CPUTime  : 
% 0.45/1.03  ============================== Prover9 ===============================
% 0.45/1.03  Prover9 (32) version 2009-11A, November 2009.
% 0.45/1.03  Process 1403 was started by sandbox on n024.cluster.edu,
% 0.45/1.03  Sat Jun 18 12:22:33 2022
% 0.45/1.03  The command was "/export/starexec/sandbox/solver/bin/prover9 -t 300 -f /tmp/Prover9_914_n024.cluster.edu".
% 0.45/1.03  ============================== end of head ===========================
% 0.45/1.03  
% 0.45/1.03  ============================== INPUT =================================
% 0.45/1.03  
% 0.45/1.03  % Reading from file /tmp/Prover9_914_n024.cluster.edu
% 0.45/1.03  
% 0.45/1.03  set(prolog_style_variables).
% 0.45/1.03  set(auto2).
% 0.45/1.03      % set(auto2) -> set(auto).
% 0.45/1.03      % set(auto) -> set(auto_inference).
% 0.45/1.03      % set(auto) -> set(auto_setup).
% 0.45/1.03      % set(auto_setup) -> set(predicate_elim).
% 0.45/1.03      % set(auto_setup) -> assign(eq_defs, unfold).
% 0.45/1.03      % set(auto) -> set(auto_limits).
% 0.45/1.03      % set(auto_limits) -> assign(max_weight, "100.000").
% 0.45/1.03      % set(auto_limits) -> assign(sos_limit, 20000).
% 0.45/1.03      % set(auto) -> set(auto_denials).
% 0.45/1.03      % set(auto) -> set(auto_process).
% 0.45/1.03      % set(auto2) -> assign(new_constants, 1).
% 0.45/1.03      % set(auto2) -> assign(fold_denial_max, 3).
% 0.45/1.03      % set(auto2) -> assign(max_weight, "200.000").
% 0.45/1.03      % set(auto2) -> assign(max_hours, 1).
% 0.45/1.03      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 0.45/1.03      % set(auto2) -> assign(max_seconds, 0).
% 0.45/1.03      % set(auto2) -> assign(max_minutes, 5).
% 0.45/1.03      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 0.45/1.03      % set(auto2) -> set(sort_initial_sos).
% 0.45/1.03      % set(auto2) -> assign(sos_limit, -1).
% 0.45/1.03      % set(auto2) -> assign(lrs_ticks, 3000).
% 0.45/1.03      % set(auto2) -> assign(max_megs, 400).
% 0.45/1.03      % set(auto2) -> assign(stats, some).
% 0.45/1.03      % set(auto2) -> clear(echo_input).
% 0.45/1.03      % set(auto2) -> set(quiet).
% 0.45/1.03      % set(auto2) -> clear(print_initial_clauses).
% 0.45/1.03      % set(auto2) -> clear(print_given).
% 0.45/1.03  assign(lrs_ticks,-1).
% 0.45/1.03  assign(sos_limit,10000).
% 0.45/1.03  assign(order,kbo).
% 0.45/1.03  set(lex_order_vars).
% 0.45/1.03  clear(print_given).
% 0.45/1.03  
% 0.45/1.03  % formulas(sos).  % not echoed (37 formulas)
% 0.45/1.03  
% 0.45/1.03  ============================== end of input ==========================
% 0.45/1.03  
% 0.45/1.03  % From the command line: assign(max_seconds, 300).
% 0.45/1.03  
% 0.45/1.03  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 0.45/1.03  
% 0.45/1.03  % Formulas that are not ordinary clauses:
% 0.45/1.03  1 (all X all Y (unequally_directed_opposite_lines(X,Y) <-> unequally_directed_lines(X,reverse_line(Y)))) # label(a1_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  2 (all X all Y (right_apart_point(X,Y) <-> left_apart_point(X,reverse_line(Y)))) # label(a2_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  3 (all X all Y (right_convergent_lines(X,Y) <-> left_convergent_lines(X,reverse_line(Y)))) # label(a3_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  4 (all X all Y (equally_directed_lines(X,Y) <-> -unequally_directed_lines(X,Y))) # label(a4_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  5 (all X all Y (equally_directed_opposite_lines(X,Y) <-> -unequally_directed_opposite_lines(X,Y))) # label(a5_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  6 (all A all L (apart_point_and_line(A,L) <-> left_apart_point(A,L) | right_apart_point(A,L))) # label(a6_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  7 (all L all M (convergent_lines(L,M) <-> unequally_directed_lines(L,M) & unequally_directed_opposite_lines(L,M))) # label(a7_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  8 (all A all B all L (divides_points(L,A,B) <-> left_apart_point(A,L) & right_apart_point(B,L) | right_apart_point(A,L) & left_apart_point(B,L))) # label(a8_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  9 (all L all A all B (before_on_line(L,A,B) <-> distinct_points(A,B) & incident_point_and_line(A,L) & incident_point_and_line(B,L) & equally_directed_lines(L,line_connecting(A,B)))) # label(ax4_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  10 (all L all A all B all C (between_on_line(L,A,B,C) <-> before_on_line(L,A,B) & before_on_line(L,B,C) | before_on_line(L,C,B) & before_on_line(L,B,A))) # label(a9_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  11 (all A -distinct_points(A,A)) # label(ax1_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  12 (all A all B all C (distinct_points(A,B) -> distinct_points(A,C) | distinct_points(B,C))) # label(ax2_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  13 (all L -distinct_lines(L,L)) # label(ax3_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  14 (all L all M all N (distinct_lines(L,M) -> distinct_lines(L,N) | distinct_lines(M,N))) # label(ax4_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  15 (all L equally_directed_lines(L,L)) # label(ax5_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  16 (all L all M all N (unequally_directed_lines(L,M) -> unequally_directed_lines(L,N) | unequally_directed_lines(M,N))) # label(ax6_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  17 (all L all M all N (unequally_directed_lines(L,M) & unequally_directed_lines(L,reverse_line(M)) -> unequally_directed_lines(L,N) & unequally_directed_lines(L,reverse_line(N)) | unequally_directed_lines(M,N) & unequally_directed_lines(M,reverse_line(N)))) # label(ax7_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  18 (all L all M (unequally_directed_lines(L,M) | unequally_directed_lines(L,reverse_line(M)))) # label(ax8_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  19 (all L all M (unequally_directed_lines(L,M) & unequally_directed_lines(L,reverse_line(M)) -> left_convergent_lines(L,M) | left_convergent_lines(L,reverse_line(M)))) # label(ax9_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  20 (all A all L -(left_apart_point(A,L) | left_apart_point(A,reverse_line(L)))) # label(ax10_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  21 (all L all M -(left_convergent_lines(L,M) | left_convergent_lines(L,reverse_line(M)))) # label(ax11_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  22 (all A all B (point(A) & point(B) & distinct_points(A,B) -> line(line_connecting(A,B)))) # label(ax1_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  23 (all L all M (line(L) & line(M) & unequally_directed_lines(L,M) & unequally_directed_lines(L,reverse_line(M)) -> point(intersection_point(L,M)))) # label(ax2_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  24 (all L all A (point(A) & line(L) -> line(parallel_through_point(L,A)))) # label(ax3_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  25 (all L (line(L) -> line(reverse_line(L)))) # label(ax4_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  26 (all A all B (distinct_points(A,B) -> -apart_point_and_line(A,line_connecting(A,B)) & -apart_point_and_line(B,line_connecting(A,B)))) # label(ax5_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  27 (all L all M (unequally_directed_lines(L,M) & unequally_directed_lines(L,reverse_line(M)) -> -apart_point_and_line(intersection_point(L,M),L) & -apart_point_and_line(intersection_point(L,M),M))) # label(ax6_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  28 (all A all L -apart_point_and_line(A,parallel_through_point(L,A))) # label(ax7_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  29 (all L -distinct_lines(L,reverse_line(L))) # label(ax8_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  30 (all A all B (distinct_points(A,B) -> equally_directed_lines(line_connecting(A,B),reverse_line(line_connecting(B,A))))) # label(ax9_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  31 (all A all L equally_directed_lines(parallel_through_point(L,A),L)) # label(ax10_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  32 (all A all B all L all M (distinct_points(A,B) & distinct_lines(L,M) -> left_apart_point(A,L) | left_apart_point(B,L) | left_apart_point(A,M) | left_apart_point(B,M) | left_apart_point(A,reverse_line(L)) | left_apart_point(B,reverse_line(L)) | left_apart_point(A,reverse_line(M)) | left_apart_point(B,reverse_line(M)))) # label(ax1_uniq_cons) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  33 (all A all B all L (distinct_points(A,B) & left_apart_point(A,L) -> left_apart_point(B,L) | left_convergent_lines(line_connecting(A,B),L))) # label(ax2_uniq_cons) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  34 (all A all B all L (left_apart_point(A,L) -> distinct_points(A,B) | left_apart_point(B,L))) # label(ax1_subs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  35 (all A all L all M (left_apart_point(A,L) & unequally_directed_lines(L,M) -> distinct_lines(L,M) | left_apart_point(A,reverse_line(M)))) # label(ax2_subs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  36 (all L all M all N (left_convergent_lines(L,M) -> unequally_directed_lines(M,N) | left_convergent_lines(L,N))) # label(ax3_subs) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.03  37 -(all L all M (unequally_directed_lines(L,M) <-> unequally_directed_opposite_lines(L,reverse_line(M)))) # label(con) # label(negated_conjecture) # label(non_clause).  [assumption].
% 0.45/1.03  
% 0.45/1.03  ============================== end of process non-clausal formulas ===
% 0.45/1.03  
% 0.45/1.03  ============================== PROCESS INITIAL CLAUSES ===============
% 0.45/1.03  
% 0.45/1.03  ============================== PREDICATE ELIMINATION =================
% 0.45/1.03  38 -equally_directed_lines(A,B) | -unequally_directed_lines(A,B) # label(a4_defns) # label(axiom).  [clausify(4)].
% 0.45/1.03  39 equally_directed_lines(A,A) # label(ax5_basics) # label(axiom).  [clausify(15)].
% 0.45/1.03  40 equally_directed_lines(parallel_through_point(A,B),A) # label(ax10_cons_objs) # label(axiom).  [clausify(31)].
% 0.45/1.03  41 equally_directed_lines(A,B) | unequally_directed_lines(A,B) # label(a4_defns) # label(axiom).  [clausify(4)].
% 0.45/1.03  Derived: -unequally_directed_lines(A,A).  [resolve(38,a,39,a)].
% 0.45/1.03  Derived: -unequally_directed_lines(parallel_through_point(A,B),A).  [resolve(38,a,40,a)].
% 0.45/1.03  42 -before_on_line(A,B,C) | equally_directed_lines(A,line_connecting(B,C)) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.45/1.03  Derived: -before_on_line(A,B,C) | -unequally_directed_lines(A,line_connecting(B,C)).  [resolve(42,b,38,a)].
% 0.45/1.03  43 -distinct_points(A,B) | equally_directed_lines(line_connecting(A,B),reverse_line(line_connecting(B,A))) # label(ax9_cons_objs) # label(axiom).  [clausify(30)].
% 0.45/1.03  Derived: -distinct_points(A,B) | -unequally_directed_lines(line_connecting(A,B),reverse_line(line_connecting(B,A))).  [resolve(43,b,38,a)].
% 0.45/1.03  44 before_on_line(A,B,C) | -distinct_points(B,C) | -incident_point_and_line(B,A) | -incident_point_and_line(C,A) | -equally_directed_lines(A,line_connecting(B,C)) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.45/1.03  Derived: before_on_line(line_connecting(A,B),A,B) | -distinct_points(A,B) | -incident_point_and_line(A,line_connecting(A,B)) | -incident_point_and_line(B,line_connecting(A,B)).  [resolve(44,e,39,a)].
% 0.45/1.03  Derived: before_on_line(parallel_through_point(line_connecting(A,B),C),A,B) | -distinct_points(A,B) | -incident_point_and_line(A,parallel_through_point(line_connecting(A,B),C)) | -incident_point_and_line(B,parallel_through_point(line_connecting(A,B),C)).  [resolve(44,e,40,a)].
% 0.45/1.03  Derived: before_on_line(A,B,C) | -distinct_points(B,C) | -incident_point_and_line(B,A) | -incident_point_and_line(C,A) | unequally_directed_lines(A,line_connecting(B,C)).  [resolve(44,e,41,a)].
% 0.45/1.03  45 -equally_directed_opposite_lines(A,B) | -unequally_directed_opposite_lines(A,B) # label(a5_defns) # label(axiom).  [clausify(5)].
% 0.45/1.03  46 equally_directed_opposite_lines(A,B) | unequally_directed_opposite_lines(A,B) # label(a5_defns) # label(axiom).  [clausify(5)].
% 0.45/1.03  47 -unequally_directed_lines(c1,c2) | -unequally_directed_opposite_lines(c1,reverse_line(c2)) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.45/1.03  48 unequally_directed_lines(c1,c2) | unequally_directed_opposite_lines(c1,reverse_line(c2)) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.45/1.03  49 -convergent_lines(A,B) | unequally_directed_opposite_lines(A,B) # label(a7_defns) # label(axiom).  [clausify(7)].
% 0.45/1.03  Derived: -convergent_lines(c1,reverse_line(c2)) | -unequally_directed_lines(c1,c2).  [resolve(49,b,47,b)].
% 0.45/1.03  50 -unequally_directed_opposite_lines(A,B) | unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.45/1.03  Derived: unequally_directed_lines(c1,reverse_line(reverse_line(c2))) | unequally_directed_lines(c1,c2).  [resolve(50,a,48,b)].
% 0.45/1.03  Derived: unequally_directed_lines(A,reverse_line(B)) | -convergent_lines(A,B).  [resolve(50,a,49,b)].
% 0.45/1.03  51 unequally_directed_opposite_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.45/1.03  Derived: -unequally_directed_lines(c1,reverse_line(reverse_line(c2))) | -unequally_directed_lines(c1,c2).  [resolve(51,a,47,b)].
% 0.45/1.03  52 convergent_lines(A,B) | -unequally_directed_lines(A,B) | -unequally_directed_opposite_lines(A,B) # label(a7_defns) # label(axiom).  [clausify(7)].
% 0.45/1.03  Derived: convergent_lines(c1,reverse_line(c2)) | -unequally_directed_lines(c1,reverse_line(c2)) | unequally_directed_lines(c1,c2).  [resolve(52,c,48,b)].
% 0.45/1.03  Derived: convergent_lines(A,B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(52,c,51,a)].
% 0.45/1.03  53 apart_point_and_line(A,B) | -left_apart_point(A,B) # label(a6_defns) # label(axiom).  [clausify(6)].
% 0.45/1.03  54 -apart_point_and_line(A,parallel_through_point(B,A)) # label(ax7_cons_objs) # label(axiom).  [clausify(28)].
% 0.45/1.03  55 -distinct_points(A,B) | -apart_point_and_line(A,line_connecting(A,B)) # label(ax5_cons_objs) # label(axiom).  [clausify(26)].
% 0.45/1.03  56 -distinct_points(A,B) | -apart_point_and_line(B,line_connecting(A,B)) # label(ax5_cons_objs) # label(axiom).  [clausify(26)].
% 0.45/1.03  57 -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | -apart_point_and_line(intersection_point(A,B),A) # label(ax6_cons_objs) # label(axiom).  [clausify(27)].
% 0.45/1.03  58 -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | -apart_point_and_line(intersection_point(A,B),B) # label(ax6_cons_objs) # label(axiom).  [clausify(27)].
% 0.45/1.03  Derived: -left_apart_point(A,parallel_through_point(B,A)).  [resolve(53,a,54,a)].
% 0.45/1.03  Derived: -left_apart_point(A,line_connecting(A,B)) | -distinct_points(A,B).  [resolve(53,a,55,b)].
% 0.45/1.03  Derived: -left_apart_point(A,line_connecting(B,A)) | -distinct_points(B,A).  [resolve(53,a,56,b)].
% 0.45/1.03  Derived: -left_apart_point(intersection_point(A,B),A) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(53,a,57,c)].
% 0.45/1.03  Derived: -left_apart_point(intersection_point(A,B),B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(53,a,58,c)].
% 0.45/1.03  59 apart_point_and_line(A,B) | -right_apart_point(A,B) # label(a6_defns) # label(axiom).  [clausify(6)].
% 0.45/1.03  Derived: -right_apart_point(A,parallel_through_point(B,A)).  [resolve(59,a,54,a)].
% 0.45/1.03  Derived: -right_apart_point(A,line_connecting(A,B)) | -distinct_points(A,B).  [resolve(59,a,55,b)].
% 0.45/1.03  Derived: -right_apart_point(A,line_connecting(B,A)) | -distinct_points(B,A).  [resolve(59,a,56,b)].
% 0.45/1.03  Derived: -right_apart_point(intersection_point(A,B),A) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(59,a,57,c)].
% 0.45/1.03  Derived: -right_apart_point(intersection_point(A,B),B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(59,a,58,c)].
% 0.45/1.03  60 -apart_point_and_line(A,B) | left_apart_point(A,B) | right_apart_point(A,B) # label(a6_defns) # label(axiom).  [clausify(6)].
% 0.45/1.03  61 convergent_lines(c1,reverse_line(c2)) | -unequally_directed_lines(c1,reverse_line(c2)) | unequally_directed_lines(c1,c2).  [resolve(52,c,48,b)].
% 0.45/1.03  62 -convergent_lines(A,B) | unequally_directed_lines(A,B) # label(a7_defns) # label(axiom).  [clausify(7)].
% 0.45/1.03  63 -convergent_lines(c1,reverse_line(c2)) | -unequally_directed_lines(c1,c2).  [resolve(49,b,47,b)].
% 0.45/1.03  64 unequally_directed_lines(A,reverse_line(B)) | -convergent_lines(A,B).  [resolve(50,a,49,b)].
% 0.45/1.03  Derived: -unequally_directed_lines(c1,reverse_line(c2)) | unequally_directed_lines(c1,c2) | unequally_directed_lines(c1,reverse_line(reverse_line(c2))).  [resolve(61,a,64,b)].
% 0.45/1.03  65 convergent_lines(A,B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(52,c,51,a)].
% 0.45/1.03  Derived: -unequally_directed_lines(c1,reverse_line(c2)) | -unequally_directed_lines(c1,reverse_line(reverse_line(c2))) | -unequally_directed_lines(c1,c2).  [resolve(65,a,63,a)].
% 0.45/1.03  66 right_convergent_lines(A,B) | -left_convergent_lines(A,reverse_line(B)) # label(a3_defns) # label(axiom).  [clausify(3)].
% 0.45/1.03  67 -right_convergent_lines(A,B) | left_convergent_lines(A,reverse_line(B)) # label(a3_defns) # label(axiom).  [clausify(3)].
% 0.45/1.04  68 divides_points(A,B,C) | -left_apart_point(B,A) | -right_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.45/1.04  69 -divides_points(A,B,C) | left_apart_point(B,A) | right_apart_point(B,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.45/1.04  70 -divides_points(A,B,C) | left_apart_point(B,A) | left_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.45/1.04  71 -divides_points(A,B,C) | right_apart_point(C,A) | right_apart_point(B,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.45/1.04  72 -divides_points(A,B,C) | right_apart_point(C,A) | left_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.45/1.04  73 divides_points(A,B,C) | -right_apart_point(B,A) | -left_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.45/1.04  74 right_apart_point(A,B) | -left_apart_point(A,reverse_line(B)) # label(a2_defns) # label(axiom).  [clausify(2)].
% 0.45/1.04  75 -right_apart_point(A,B) | left_apart_point(A,reverse_line(B)) # label(a2_defns) # label(axiom).  [clausify(2)].
% 0.45/1.04  76 -right_apart_point(A,parallel_through_point(B,A)).  [resolve(59,a,54,a)].
% 0.45/1.04  Derived: -left_apart_point(A,reverse_line(parallel_through_point(B,A))).  [resolve(76,a,74,a)].
% 0.45/1.04  77 -right_apart_point(A,line_connecting(A,B)) | -distinct_points(A,B).  [resolve(59,a,55,b)].
% 0.45/1.04  Derived: -distinct_points(A,B) | -left_apart_point(A,reverse_line(line_connecting(A,B))).  [resolve(77,a,74,a)].
% 0.45/1.04  78 -right_apart_point(A,line_connecting(B,A)) | -distinct_points(B,A).  [resolve(59,a,56,b)].
% 0.45/1.04  Derived: -distinct_points(A,B) | -left_apart_point(B,reverse_line(line_connecting(A,B))).  [resolve(78,a,74,a)].
% 0.45/1.04  79 -right_apart_point(intersection_point(A,B),A) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(59,a,57,c)].
% 0.45/1.04  Derived: -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | -left_apart_point(intersection_point(A,B),reverse_line(A)).  [resolve(79,a,74,a)].
% 0.45/1.04  80 -right_apart_point(intersection_point(A,B),B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(59,a,58,c)].
% 0.45/1.04  Derived: -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | -left_apart_point(intersection_point(A,B),reverse_line(B)).  [resolve(80,a,74,a)].
% 0.45/1.04  81 between_on_line(A,B,C,D) | -before_on_line(A,B,C) | -before_on_line(A,C,D) # label(a9_defns) # label(axiom).  [clausify(10)].
% 0.45/1.04  82 -between_on_line(A,B,C,D) | before_on_line(A,B,C) | before_on_line(A,D,C) # label(a9_defns) # label(axiom).  [clausify(10)].
% 0.45/1.04  83 -between_on_line(A,B,C,D) | before_on_line(A,B,C) | before_on_line(A,C,B) # label(a9_defns) # label(axiom).  [clausify(10)].
% 0.45/1.04  84 -between_on_line(A,B,C,D) | before_on_line(A,C,D) | before_on_line(A,D,C) # label(a9_defns) # label(axiom).  [clausify(10)].
% 0.45/1.04  85 -between_on_line(A,B,C,D) | before_on_line(A,C,D) | before_on_line(A,C,B) # label(a9_defns) # label(axiom).  [clausify(10)].
% 0.45/1.04  86 between_on_line(A,B,C,D) | -before_on_line(A,D,C) | -before_on_line(A,C,B) # label(a9_defns) # label(axiom).  [clausify(10)].
% 0.45/1.04  87 before_on_line(line_connecting(A,B),A,B) | -distinct_points(A,B) | -incident_point_and_line(A,line_connecting(A,B)) | -incident_point_and_line(B,line_connecting(A,B)).  [resolve(44,e,39,a)].
% 0.45/1.04  88 -before_on_line(A,B,C) | distinct_points(B,C) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.45/1.04  89 -before_on_line(A,B,C) | incident_point_and_line(B,A) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.45/1.04  90 -before_on_line(A,B,C) | incident_point_and_line(C,A) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.45/1.04  91 -before_on_line(A,B,C) | -unequally_directed_lines(A,line_connecting(B,C)).  [resolve(42,b,38,a)].
% 0.45/1.04  Derived: -distinct_points(A,B) | -incident_point_and_line(A,line_connecting(A,B)) | -incident_point_and_line(B,line_connecting(A,B)) | -unequally_directed_lines(line_connecting(A,B),line_connecting(A,B)).  [resolve(87,a,91,a)].
% 0.45/1.04  92 before_on_line(parallel_through_point(line_connecting(A,B),C),A,B) | -distinct_points(A,B) | -incident_point_and_line(A,parallel_through_point(line_connecting(A,B),C)) | -incident_point_and_line(B,parallel_through_point(line_connecting(A,B),C)).  [resolve(44,e,40,a)].
% 0.45/1.04  Derived: -distinct_points(A,B) | -incident_point_and_line(A,parallel_through_point(line_connecting(A,B),C)) | -incident_point_and_line(B,parallel_through_point(line_connecting(A,B),C)) | -unequally_directed_lines(parallel_through_point(line_connecting(A,B),C),line_connecting(A,B)).  [resolve(92,a,91,a)].
% 0.45/1.04  93 before_on_line(A,B,C) | -distinct_points(B,C) | -incident_point_and_line(B,A) | -incident_point_and_line(C,A) | unequally_directed_lines(A,line_connecting(B,C)).  [resolve(44,e,41,a)].
% 0.45/1.04  
% 0.45/1.04  ============================== end predicate elimination =============
% 0.45/1.04  
% 0.45/1.04  Auto_denials:  (non-Horn, no changes).
% 0.45/1.04  
% 0.45/1.04  Term ordering decisions:
% 0.45/1.04  
% 0.45/1.04  % Assigning unary symbol reverse_line kb_weight 0 and highest precedence (14).
% 0.45/1.04  Function symbol KB weights:  c1=1. c2=1. line_connecting=1. intersection_point=1. parallel_through_point=1. reverse_line=0.
% 0.45/1.04  
% 0.45/1.04  ============================== end of process initial clauses ========
% 0.45/1.04  
% 0.45/1.04  ============================== CLAUSES FOR SEARCH ====================
% 0.45/1.04  
% 0.45/1.04  ============================== end of clauses for search =============
% 0.45/1.04  
% 0.45/1.04  ============================== SEARCH ================================
% 0.45/1.04  
% 0.45/1.04  % Starting search at 0.02 seconds.
% 0.45/1.04  
% 0.45/1.04  ============================== PROOF =================================
% 0.45/1.04  % SZS status Theorem
% 0.45/1.04  % SZS output start Refutation
% 0.45/1.04  
% 0.45/1.04  % Proof 1 at 0.02 (+ 0.01) seconds.
% 0.45/1.04  % Length of proof is 26.
% 0.45/1.04  % Level of proof is 7.
% 0.45/1.04  % Maximum clause weight is 11.000.
% 0.45/1.04  % Given clauses 26.
% 0.45/1.04  
% 0.45/1.04  1 (all X all Y (unequally_directed_opposite_lines(X,Y) <-> unequally_directed_lines(X,reverse_line(Y)))) # label(a1_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.04  16 (all L all M all N (unequally_directed_lines(L,M) -> unequally_directed_lines(L,N) | unequally_directed_lines(M,N))) # label(ax6_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.04  18 (all L all M (unequally_directed_lines(L,M) | unequally_directed_lines(L,reverse_line(M)))) # label(ax8_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.04  19 (all L all M (unequally_directed_lines(L,M) & unequally_directed_lines(L,reverse_line(M)) -> left_convergent_lines(L,M) | left_convergent_lines(L,reverse_line(M)))) # label(ax9_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.04  21 (all L all M -(left_convergent_lines(L,M) | left_convergent_lines(L,reverse_line(M)))) # label(ax11_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.45/1.04  37 -(all L all M (unequally_directed_lines(L,M) <-> unequally_directed_opposite_lines(L,reverse_line(M)))) # label(con) # label(negated_conjecture) # label(non_clause).  [assumption].
% 0.45/1.04  47 -unequally_directed_lines(c1,c2) | -unequally_directed_opposite_lines(c1,reverse_line(c2)) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.45/1.04  48 unequally_directed_lines(c1,c2) | unequally_directed_opposite_lines(c1,reverse_line(c2)) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.45/1.04  50 -unequally_directed_opposite_lines(A,B) | unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.45/1.04  51 unequally_directed_opposite_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.45/1.04  94 unequally_directed_lines(A,B) | unequally_directed_lines(A,reverse_line(B)) # label(ax8_basics) # label(axiom).  [clausify(18)].
% 0.45/1.04  98 -left_convergent_lines(A,B) # label(ax11_basics) # label(axiom).  [clausify(21)].
% 0.45/1.04  104 -unequally_directed_lines(A,B) | unequally_directed_lines(A,C) | unequally_directed_lines(B,C) # label(ax6_basics) # label(axiom).  [clausify(16)].
% 0.45/1.04  111 -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | left_convergent_lines(A,B) | left_convergent_lines(A,reverse_line(B)) # label(ax9_basics) # label(axiom).  [clausify(19)].
% 0.45/1.04  112 -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [copy(111),unit_del(c,98),unit_del(d,98)].
% 0.45/1.04  119 unequally_directed_lines(c1,reverse_line(reverse_line(c2))) | unequally_directed_lines(c1,c2).  [resolve(50,a,48,b)].
% 0.45/1.04  120 -unequally_directed_lines(c1,reverse_line(reverse_line(c2))) | -unequally_directed_lines(c1,c2).  [resolve(51,a,47,b)].
% 0.45/1.04  122 unequally_directed_lines(A,B) | unequally_directed_lines(reverse_line(C),B) | unequally_directed_lines(A,C).  [resolve(104,a,94,b)].
% 0.45/1.04  125 unequally_directed_lines(reverse_line(A),A).  [factor(122,b,c),merge(b)].
% 0.45/1.04  130 unequally_directed_lines(c1,c2) | unequally_directed_lines(c1,A) | unequally_directed_lines(reverse_line(reverse_line(c2)),A).  [resolve(119,a,104,a)].
% 0.45/1.04  131 unequally_directed_lines(c1,c2) | unequally_directed_lines(reverse_line(reverse_line(c2)),c2).  [factor(130,a,b)].
% 0.45/1.04  132 -unequally_directed_lines(c1,c2) | unequally_directed_lines(c1,reverse_line(c2)).  [resolve(120,a,94,b)].
% 0.45/1.04  143 -unequally_directed_lines(reverse_line(reverse_line(A)),A).  [resolve(125,a,112,b)].
% 0.45/1.04  145 unequally_directed_lines(c1,c2).  [back_unit_del(131),unit_del(b,143)].
% 0.45/1.04  146 unequally_directed_lines(c1,reverse_line(c2)).  [back_unit_del(132),unit_del(a,145)].
% 0.45/1.04  149 $F.  [ur(112,a,145,a),unit_del(a,146)].
% 0.45/1.04  
% 0.45/1.04  % SZS output end Refutation
% 0.45/1.04  ============================== end of proof ==========================
% 0.45/1.04  
% 0.45/1.04  ============================== STATISTICS ============================
% 0.45/1.04  
% 0.45/1.04  Given=26. Generated=124. Kept=49. proofs=1.
% 0.45/1.04  Usable=24. Sos=14. Demods=0. Limbo=1, Disabled=110. Hints=0.
% 0.45/1.04  Megabytes=0.13.
% 0.45/1.04  User_CPU=0.02, System_CPU=0.01, Wall_clock=0.
% 0.45/1.04  
% 0.45/1.04  ============================== end of statistics =====================
% 0.45/1.04  
% 0.45/1.04  ============================== end of search =========================
% 0.45/1.04  
% 0.45/1.04  THEOREM PROVED
% 0.45/1.04  % SZS status Theorem
% 0.45/1.04  
% 0.45/1.04  Exiting with 1 proof.
% 0.45/1.04  
% 0.45/1.04  Process 1403 exit (max_proofs) Sat Jun 18 12:22:33 2022
% 0.45/1.04  Prover9 interrupted
%------------------------------------------------------------------------------