TSTP Solution File: GEO265+3 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : GEO265+3 : TPTP v8.1.0. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n027.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 05:55:40 EDT 2022

% Result   : Theorem 0.83s 1.10s
% Output   : Refutation 0.83s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.08/0.14  % Problem  : GEO265+3 : TPTP v8.1.0. Released v4.0.0.
% 0.08/0.14  % Command  : tptp2X_and_run_prover9 %d %s
% 0.14/0.36  % Computer : n027.cluster.edu
% 0.14/0.36  % Model    : x86_64 x86_64
% 0.14/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.36  % Memory   : 8042.1875MB
% 0.14/0.36  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.36  % CPULimit : 300
% 0.14/0.36  % WCLimit  : 600
% 0.14/0.36  % DateTime : Fri Jun 17 22:29:22 EDT 2022
% 0.14/0.36  % CPUTime  : 
% 0.83/1.09  ============================== Prover9 ===============================
% 0.83/1.09  Prover9 (32) version 2009-11A, November 2009.
% 0.83/1.09  Process 14134 was started by sandbox2 on n027.cluster.edu,
% 0.83/1.09  Fri Jun 17 22:29:23 2022
% 0.83/1.09  The command was "/export/starexec/sandbox2/solver/bin/prover9 -t 300 -f /tmp/Prover9_13981_n027.cluster.edu".
% 0.83/1.09  ============================== end of head ===========================
% 0.83/1.09  
% 0.83/1.09  ============================== INPUT =================================
% 0.83/1.09  
% 0.83/1.09  % Reading from file /tmp/Prover9_13981_n027.cluster.edu
% 0.83/1.09  
% 0.83/1.09  set(prolog_style_variables).
% 0.83/1.09  set(auto2).
% 0.83/1.09      % set(auto2) -> set(auto).
% 0.83/1.09      % set(auto) -> set(auto_inference).
% 0.83/1.09      % set(auto) -> set(auto_setup).
% 0.83/1.09      % set(auto_setup) -> set(predicate_elim).
% 0.83/1.09      % set(auto_setup) -> assign(eq_defs, unfold).
% 0.83/1.09      % set(auto) -> set(auto_limits).
% 0.83/1.09      % set(auto_limits) -> assign(max_weight, "100.000").
% 0.83/1.09      % set(auto_limits) -> assign(sos_limit, 20000).
% 0.83/1.09      % set(auto) -> set(auto_denials).
% 0.83/1.09      % set(auto) -> set(auto_process).
% 0.83/1.09      % set(auto2) -> assign(new_constants, 1).
% 0.83/1.09      % set(auto2) -> assign(fold_denial_max, 3).
% 0.83/1.09      % set(auto2) -> assign(max_weight, "200.000").
% 0.83/1.09      % set(auto2) -> assign(max_hours, 1).
% 0.83/1.09      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 0.83/1.09      % set(auto2) -> assign(max_seconds, 0).
% 0.83/1.09      % set(auto2) -> assign(max_minutes, 5).
% 0.83/1.09      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 0.83/1.09      % set(auto2) -> set(sort_initial_sos).
% 0.83/1.09      % set(auto2) -> assign(sos_limit, -1).
% 0.83/1.09      % set(auto2) -> assign(lrs_ticks, 3000).
% 0.83/1.09      % set(auto2) -> assign(max_megs, 400).
% 0.83/1.09      % set(auto2) -> assign(stats, some).
% 0.83/1.09      % set(auto2) -> clear(echo_input).
% 0.83/1.09      % set(auto2) -> set(quiet).
% 0.83/1.09      % set(auto2) -> clear(print_initial_clauses).
% 0.83/1.09      % set(auto2) -> clear(print_given).
% 0.83/1.09  assign(lrs_ticks,-1).
% 0.83/1.09  assign(sos_limit,10000).
% 0.83/1.09  assign(order,kbo).
% 0.83/1.09  set(lex_order_vars).
% 0.83/1.09  clear(print_given).
% 0.83/1.09  
% 0.83/1.09  % formulas(sos).  % not echoed (37 formulas)
% 0.83/1.09  
% 0.83/1.09  ============================== end of input ==========================
% 0.83/1.09  
% 0.83/1.09  % From the command line: assign(max_seconds, 300).
% 0.83/1.09  
% 0.83/1.09  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 0.83/1.09  
% 0.83/1.09  % Formulas that are not ordinary clauses:
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  4 (all X all Y (equally_directed_lines(X,Y) <-> -unequally_directed_lines(X,Y))) # label(a4_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  11 (all A -distinct_points(A,A)) # label(ax1_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  13 (all L -distinct_lines(L,L)) # label(ax3_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  15 (all L equally_directed_lines(L,L)) # label(ax5_basics) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  25 (all L (line(L) -> line(reverse_line(L)))) # label(ax4_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  29 (all L -distinct_lines(L,reverse_line(L))) # label(ax8_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  31 (all A all L equally_directed_lines(parallel_through_point(L,A),L)) # label(ax10_cons_objs) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  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].
% 0.83/1.09  37 -(all L all M (equally_directed_lines(L,reverse_line(M)) -> equally_directed_opposite_lines(L,M))) # label(con) # label(negated_conjecture) # label(non_clause).  [assumption].
% 0.83/1.09  
% 0.83/1.09  ============================== end of process non-clausal formulas ===
% 0.83/1.09  
% 0.83/1.09  ============================== PROCESS INITIAL CLAUSES ===============
% 0.83/1.09  
% 0.83/1.09  ============================== PREDICATE ELIMINATION =================
% 0.83/1.09  38 -equally_directed_lines(A,B) | -unequally_directed_lines(A,B) # label(a4_defns) # label(axiom).  [clausify(4)].
% 0.83/1.09  39 equally_directed_lines(A,A) # label(ax5_basics) # label(axiom).  [clausify(15)].
% 0.83/1.09  40 equally_directed_lines(c1,reverse_line(c2)) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.83/1.09  41 equally_directed_lines(parallel_through_point(A,B),A) # label(ax10_cons_objs) # label(axiom).  [clausify(31)].
% 0.83/1.09  42 equally_directed_lines(A,B) | unequally_directed_lines(A,B) # label(a4_defns) # label(axiom).  [clausify(4)].
% 0.83/1.09  Derived: -unequally_directed_lines(A,A).  [resolve(38,a,39,a)].
% 0.83/1.09  Derived: -unequally_directed_lines(c1,reverse_line(c2)).  [resolve(38,a,40,a)].
% 0.83/1.09  Derived: -unequally_directed_lines(parallel_through_point(A,B),A).  [resolve(38,a,41,a)].
% 0.83/1.09  43 -before_on_line(A,B,C) | equally_directed_lines(A,line_connecting(B,C)) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.83/1.09  Derived: -before_on_line(A,B,C) | -unequally_directed_lines(A,line_connecting(B,C)).  [resolve(43,b,38,a)].
% 0.83/1.09  44 -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)].
% 0.83/1.09  Derived: -distinct_points(A,B) | -unequally_directed_lines(line_connecting(A,B),reverse_line(line_connecting(B,A))).  [resolve(44,b,38,a)].
% 0.83/1.09  45 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)].
% 0.83/1.09  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(45,e,39,a)].
% 0.83/1.09  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(45,e,41,a)].
% 0.83/1.09  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(45,e,42,a)].
% 0.83/1.09  46 -equally_directed_opposite_lines(c1,c2) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.83/1.09  47 equally_directed_opposite_lines(A,B) | unequally_directed_opposite_lines(A,B) # label(a5_defns) # label(axiom).  [clausify(5)].
% 0.83/1.09  Derived: unequally_directed_opposite_lines(c1,c2).  [resolve(46,a,47,a)].
% 0.83/1.09  48 -equally_directed_opposite_lines(A,B) | -unequally_directed_opposite_lines(A,B) # label(a5_defns) # label(axiom).  [clausify(5)].
% 0.83/1.09  49 apart_point_and_line(A,B) | -left_apart_point(A,B) # label(a6_defns) # label(axiom).  [clausify(6)].
% 0.83/1.09  50 -apart_point_and_line(A,parallel_through_point(B,A)) # label(ax7_cons_objs) # label(axiom).  [clausify(28)].
% 0.83/1.09  51 -distinct_points(A,B) | -apart_point_and_line(A,line_connecting(A,B)) # label(ax5_cons_objs) # label(axiom).  [clausify(26)].
% 0.83/1.09  52 -distinct_points(A,B) | -apart_point_and_line(B,line_connecting(A,B)) # label(ax5_cons_objs) # label(axiom).  [clausify(26)].
% 0.83/1.09  53 -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)].
% 0.83/1.09  54 -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)].
% 0.83/1.09  Derived: -left_apart_point(A,parallel_through_point(B,A)).  [resolve(49,a,50,a)].
% 0.83/1.09  Derived: -left_apart_point(A,line_connecting(A,B)) | -distinct_points(A,B).  [resolve(49,a,51,b)].
% 0.83/1.09  Derived: -left_apart_point(A,line_connecting(B,A)) | -distinct_points(B,A).  [resolve(49,a,52,b)].
% 0.83/1.09  Derived: -left_apart_point(intersection_point(A,B),A) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(49,a,53,c)].
% 0.83/1.09  Derived: -left_apart_point(intersection_point(A,B),B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(49,a,54,c)].
% 0.83/1.09  55 apart_point_and_line(A,B) | -right_apart_point(A,B) # label(a6_defns) # label(axiom).  [clausify(6)].
% 0.83/1.09  Derived: -right_apart_point(A,parallel_through_point(B,A)).  [resolve(55,a,50,a)].
% 0.83/1.09  Derived: -right_apart_point(A,line_connecting(A,B)) | -distinct_points(A,B).  [resolve(55,a,51,b)].
% 0.83/1.09  Derived: -right_apart_point(A,line_connecting(B,A)) | -distinct_points(B,A).  [resolve(55,a,52,b)].
% 0.83/1.09  Derived: -right_apart_point(intersection_point(A,B),A) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(55,a,53,c)].
% 0.83/1.09  Derived: -right_apart_point(intersection_point(A,B),B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(55,a,54,c)].
% 0.83/1.09  56 -apart_point_and_line(A,B) | left_apart_point(A,B) | right_apart_point(A,B) # label(a6_defns) # label(axiom).  [clausify(6)].
% 0.83/1.09  57 convergent_lines(A,B) | -unequally_directed_lines(A,B) | -unequally_directed_opposite_lines(A,B) # label(a7_defns) # label(axiom).  [clausify(7)].
% 0.83/1.09  58 -convergent_lines(A,B) | unequally_directed_lines(A,B) # label(a7_defns) # label(axiom).  [clausify(7)].
% 0.83/1.09  59 -convergent_lines(A,B) | unequally_directed_opposite_lines(A,B) # label(a7_defns) # label(axiom).  [clausify(7)].
% 0.83/1.09  60 unequally_directed_opposite_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.83/1.09  61 -unequally_directed_opposite_lines(A,B) | unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.83/1.09  62 unequally_directed_opposite_lines(c1,c2).  [resolve(46,a,47,a)].
% 0.83/1.09  Derived: unequally_directed_lines(c1,reverse_line(c2)).  [resolve(62,a,61,a)].
% 0.83/1.09  63 right_convergent_lines(A,B) | -left_convergent_lines(A,reverse_line(B)) # label(a3_defns) # label(axiom).  [clausify(3)].
% 0.83/1.09  64 -right_convergent_lines(A,B) | left_convergent_lines(A,reverse_line(B)) # label(a3_defns) # label(axiom).  [clausify(3)].
% 0.83/1.09  65 divides_points(A,B,C) | -left_apart_point(B,A) | -right_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.83/1.09  66 -divides_points(A,B,C) | left_apart_point(B,A) | right_apart_point(B,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.83/1.09  67 -divides_points(A,B,C) | left_apart_point(B,A) | left_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.83/1.09  68 -divides_points(A,B,C) | right_apart_point(C,A) | right_apart_point(B,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.83/1.09  69 -divides_points(A,B,C) | right_apart_point(C,A) | left_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.83/1.09  70 divides_points(A,B,C) | -right_apart_point(B,A) | -left_apart_point(C,A) # label(a8_defns) # label(axiom).  [clausify(8)].
% 0.83/1.09  71 right_apart_point(A,B) | -left_apart_point(A,reverse_line(B)) # label(a2_defns) # label(axiom).  [clausify(2)].
% 0.83/1.09  72 -right_apart_point(A,B) | left_apart_point(A,reverse_line(B)) # label(a2_defns) # label(axiom).  [clausify(2)].
% 0.83/1.09  73 -right_apart_point(A,parallel_through_point(B,A)).  [resolve(55,a,50,a)].
% 0.83/1.09  Derived: -left_apart_point(A,reverse_line(parallel_through_point(B,A))).  [resolve(73,a,71,a)].
% 0.83/1.09  74 -right_apart_point(A,line_connecting(A,B)) | -distinct_points(A,B).  [resolve(55,a,51,b)].
% 0.83/1.09  Derived: -distinct_points(A,B) | -left_apart_point(A,reverse_line(line_connecting(A,B))).  [resolve(74,a,71,a)].
% 0.83/1.10  75 -right_apart_point(A,line_connecting(B,A)) | -distinct_points(B,A).  [resolve(55,a,52,b)].
% 0.83/1.10  Derived: -distinct_points(A,B) | -left_apart_point(B,reverse_line(line_connecting(A,B))).  [resolve(75,a,71,a)].
% 0.83/1.10  76 -right_apart_point(intersection_point(A,B),A) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(55,a,53,c)].
% 0.83/1.10  Derived: -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | -left_apart_point(intersection_point(A,B),reverse_line(A)).  [resolve(76,a,71,a)].
% 0.83/1.10  77 -right_apart_point(intersection_point(A,B),B) | -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)).  [resolve(55,a,54,c)].
% 0.83/1.10  Derived: -unequally_directed_lines(A,B) | -unequally_directed_lines(A,reverse_line(B)) | -left_apart_point(intersection_point(A,B),reverse_line(B)).  [resolve(77,a,71,a)].
% 0.83/1.10  78 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)].
% 0.83/1.10  79 -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)].
% 0.83/1.10  80 -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)].
% 0.83/1.10  81 -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)].
% 0.83/1.10  82 -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)].
% 0.83/1.10  83 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)].
% 0.83/1.10  84 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(45,e,39,a)].
% 0.83/1.10  85 -before_on_line(A,B,C) | distinct_points(B,C) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.83/1.10  86 -before_on_line(A,B,C) | incident_point_and_line(B,A) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.83/1.10  87 -before_on_line(A,B,C) | incident_point_and_line(C,A) # label(ax4_defns) # label(axiom).  [clausify(9)].
% 0.83/1.10  88 -before_on_line(A,B,C) | -unequally_directed_lines(A,line_connecting(B,C)).  [resolve(43,b,38,a)].
% 0.83/1.10  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(84,a,88,a)].
% 0.83/1.10  89 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(45,e,41,a)].
% 0.83/1.10  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(89,a,88,a)].
% 0.83/1.10  90 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(45,e,42,a)].
% 0.83/1.10  
% 0.83/1.10  ============================== end predicate elimination =============
% 0.83/1.10  
% 0.83/1.10  Auto_denials:  (non-Horn, no changes).
% 0.83/1.10  
% 0.83/1.10  Term ordering decisions:
% 0.83/1.10  
% 0.83/1.10  % Assigning unary symbol reverse_line kb_weight 0 and highest precedence (14).
% 0.83/1.10  Function symbol KB weights:  c1=1. c2=1. line_connecting=1. intersection_point=1. parallel_through_point=1. reverse_line=0.
% 0.83/1.10  
% 0.83/1.10  ============================== PROOF =================================
% 0.83/1.10  % SZS status Theorem
% 0.83/1.10  % SZS output start Refutation
% 0.83/1.10  
% 0.83/1.10  % Proof 1 at 0.02 (+ 0.00) seconds.
% 0.83/1.10  % Length of proof is 13.
% 0.83/1.10  % Level of proof is 4.
% 0.83/1.10  % Maximum clause weight is 4.000.
% 0.83/1.10  % Given clauses 0.
% 0.83/1.10  
% 0.83/1.10  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].
% 0.83/1.10  4 (all X all Y (equally_directed_lines(X,Y) <-> -unequally_directed_lines(X,Y))) # label(a4_defns) # label(axiom) # label(non_clause).  [assumption].
% 0.83/1.10  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].
% 0.83/1.10  37 -(all L all M (equally_directed_lines(L,reverse_line(M)) -> equally_directed_opposite_lines(L,M))) # label(con) # label(negated_conjecture) # label(non_clause).  [assumption].
% 0.83/1.10  38 -equally_directed_lines(A,B) | -unequally_directed_lines(A,B) # label(a4_defns) # label(axiom).  [clausify(4)].
% 0.83/1.10  40 equally_directed_lines(c1,reverse_line(c2)) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.83/1.10  46 -equally_directed_opposite_lines(c1,c2) # label(con) # label(negated_conjecture).  [clausify(37)].
% 0.83/1.10  47 equally_directed_opposite_lines(A,B) | unequally_directed_opposite_lines(A,B) # label(a5_defns) # label(axiom).  [clausify(5)].
% 0.83/1.10  61 -unequally_directed_opposite_lines(A,B) | unequally_directed_lines(A,reverse_line(B)) # label(a1_defns) # label(axiom).  [clausify(1)].
% 0.83/1.10  62 unequally_directed_opposite_lines(c1,c2).  [resolve(46,a,47,a)].
% 0.83/1.10  114 -unequally_directed_lines(c1,reverse_line(c2)).  [resolve(38,a,40,a)].
% 0.83/1.10  117 unequally_directed_lines(c1,reverse_line(c2)).  [resolve(62,a,61,a)].
% 0.83/1.10  118 $F.  [copy(117),unit_del(a,114)].
% 0.83/1.10  
% 0.83/1.10  % SZS output end Refutation
% 0.83/1.10  ============================== end of proof ==========================
% 0.83/1.10  
% 0.83/1.10  ============================== STATISTICS ============================
% 0.83/1.10  
% 0.83/1.10  Given=0. Generated=35. Kept=20. proofs=1.
% 0.83/1.10  Usable=0. Sos=0. Demods=0. Limbo=20, Disabled=88. Hints=0.
% 0.83/1.10  Megabytes=0.10.
% 0.83/1.10  User_CPU=0.02, System_CPU=0.00, Wall_clock=0.
% 0.83/1.10  
% 0.83/1.10  ============================== end of statistics =====================
% 0.83/1.10  
% 0.83/1.10  ============================== end of search =========================
% 0.83/1.10  
% 0.83/1.10  THEOREM PROVED
% 0.83/1.10  % SZS status Theorem
% 0.83/1.10  
% 0.83/1.10  Exiting with 1 proof.
% 0.83/1.10  
% 0.83/1.10  Process 14134 exit (max_proofs) Fri Jun 17 22:29:23 2022
% 0.83/1.10  Prover9 interrupted
%------------------------------------------------------------------------------