TSTP Solution File: GRP500-1 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : GRP500-1 : TPTP v8.1.0. Released v2.6.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n029.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 11:19:21 EDT 2022

% Result   : Unsatisfiable 1.26s 1.53s
% Output   : Refutation 1.26s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.08/0.13  % Problem  : GRP500-1 : TPTP v8.1.0. Released v2.6.0.
% 0.08/0.14  % Command  : tptp2X_and_run_prover9 %d %s
% 0.13/0.35  % Computer : n029.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit : 300
% 0.13/0.35  % WCLimit  : 600
% 0.13/0.35  % DateTime : Mon Jun 13 09:47:40 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 1.26/1.53  ============================== Prover9 ===============================
% 1.26/1.53  Prover9 (32) version 2009-11A, November 2009.
% 1.26/1.53  Process 32573 was started by sandbox on n029.cluster.edu,
% 1.26/1.53  Mon Jun 13 09:47:40 2022
% 1.26/1.53  The command was "/export/starexec/sandbox/solver/bin/prover9 -t 300 -f /tmp/Prover9_32420_n029.cluster.edu".
% 1.26/1.53  ============================== end of head ===========================
% 1.26/1.53  
% 1.26/1.53  ============================== INPUT =================================
% 1.26/1.53  
% 1.26/1.53  % Reading from file /tmp/Prover9_32420_n029.cluster.edu
% 1.26/1.53  
% 1.26/1.53  set(prolog_style_variables).
% 1.26/1.53  set(auto2).
% 1.26/1.53      % set(auto2) -> set(auto).
% 1.26/1.53      % set(auto) -> set(auto_inference).
% 1.26/1.53      % set(auto) -> set(auto_setup).
% 1.26/1.53      % set(auto_setup) -> set(predicate_elim).
% 1.26/1.53      % set(auto_setup) -> assign(eq_defs, unfold).
% 1.26/1.53      % set(auto) -> set(auto_limits).
% 1.26/1.53      % set(auto_limits) -> assign(max_weight, "100.000").
% 1.26/1.53      % set(auto_limits) -> assign(sos_limit, 20000).
% 1.26/1.53      % set(auto) -> set(auto_denials).
% 1.26/1.53      % set(auto) -> set(auto_process).
% 1.26/1.53      % set(auto2) -> assign(new_constants, 1).
% 1.26/1.53      % set(auto2) -> assign(fold_denial_max, 3).
% 1.26/1.53      % set(auto2) -> assign(max_weight, "200.000").
% 1.26/1.53      % set(auto2) -> assign(max_hours, 1).
% 1.26/1.53      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 1.26/1.53      % set(auto2) -> assign(max_seconds, 0).
% 1.26/1.53      % set(auto2) -> assign(max_minutes, 5).
% 1.26/1.53      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 1.26/1.53      % set(auto2) -> set(sort_initial_sos).
% 1.26/1.53      % set(auto2) -> assign(sos_limit, -1).
% 1.26/1.53      % set(auto2) -> assign(lrs_ticks, 3000).
% 1.26/1.53      % set(auto2) -> assign(max_megs, 400).
% 1.26/1.53      % set(auto2) -> assign(stats, some).
% 1.26/1.53      % set(auto2) -> clear(echo_input).
% 1.26/1.53      % set(auto2) -> set(quiet).
% 1.26/1.53      % set(auto2) -> clear(print_initial_clauses).
% 1.26/1.53      % set(auto2) -> clear(print_given).
% 1.26/1.53  assign(lrs_ticks,-1).
% 1.26/1.53  assign(sos_limit,10000).
% 1.26/1.53  assign(order,kbo).
% 1.26/1.53  set(lex_order_vars).
% 1.26/1.53  clear(print_given).
% 1.26/1.53  
% 1.26/1.53  % formulas(sos).  % not echoed (3 formulas)
% 1.26/1.53  
% 1.26/1.53  ============================== end of input ==========================
% 1.26/1.53  
% 1.26/1.53  % From the command line: assign(max_seconds, 300).
% 1.26/1.53  
% 1.26/1.53  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 1.26/1.53  
% 1.26/1.53  % Formulas that are not ordinary clauses:
% 1.26/1.53  
% 1.26/1.53  ============================== end of process non-clausal formulas ===
% 1.26/1.53  
% 1.26/1.53  ============================== PROCESS INITIAL CLAUSES ===============
% 1.26/1.53  
% 1.26/1.53  ============================== PREDICATE ELIMINATION =================
% 1.26/1.53  
% 1.26/1.53  ============================== end predicate elimination =============
% 1.26/1.53  
% 1.26/1.53  Auto_denials:
% 1.26/1.53    % copying label prove_these_axioms_2 to answer in negative clause
% 1.26/1.53  
% 1.26/1.53  Term ordering decisions:
% 1.26/1.53  
% 1.26/1.53  % Assigning unary symbol inverse kb_weight 0 and highest precedence (6).
% 1.26/1.53  Function symbol KB weights:  a2=1. b2=1. double_divide=1. multiply=1. inverse=0.
% 1.26/1.53  
% 1.26/1.53  ============================== end of process initial clauses ========
% 1.26/1.53  
% 1.26/1.53  ============================== CLAUSES FOR SEARCH ====================
% 1.26/1.53  
% 1.26/1.53  ============================== end of clauses for search =============
% 1.26/1.53  
% 1.26/1.53  ============================== SEARCH ================================
% 1.26/1.53  
% 1.26/1.53  % Starting search at 0.01 seconds.
% 1.26/1.53  
% 1.26/1.53  ============================== PROOF =================================
% 1.26/1.53  % SZS status Unsatisfiable
% 1.26/1.53  % SZS output start Refutation
% 1.26/1.53  
% 1.26/1.53  % Proof 1 at 0.53 (+ 0.01) seconds: prove_these_axioms_2.
% 1.26/1.53  % Length of proof is 132.
% 1.26/1.53  % Level of proof is 38.
% 1.26/1.53  % Maximum clause weight is 60.000.
% 1.26/1.53  % Given clauses 32.
% 1.26/1.53  
% 1.26/1.53  1 multiply(A,B) = inverse(double_divide(B,A)) # label(multiply) # label(axiom).  [assumption].
% 1.26/1.53  2 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,double_divide(B,C))),double_divide(D,double_divide(B,D))))) = C # label(single_axiom) # label(axiom).  [assumption].
% 1.26/1.53  3 multiply(multiply(inverse(b2),b2),a2) != a2 # label(prove_these_axioms_2) # label(negated_conjecture) # answer(prove_these_axioms_2).  [assumption].
% 1.26/1.53  4 inverse(double_divide(a2,inverse(double_divide(b2,inverse(b2))))) != a2 # answer(prove_these_axioms_2).  [copy(3),rewrite([1(4),1(7)])].
% 1.26/1.53  5 inverse(double_divide(inverse(double_divide(A,double_divide(B,C))),double_divide(D,double_divide(B,D)))) = double_divide(inverse(E),inverse(double_divide(inverse(double_divide(E,C)),double_divide(F,double_divide(inverse(A),F))))).  [para(2(a,1),2(a,1,2,1,1,1,2)),flip(a)].
% 1.26/1.53  6 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,double_divide(inverse(B),C))),double_divide(inverse(double_divide(inverse(double_divide(B,double_divide(D,E))),double_divide(F,double_divide(D,F)))),E)))) = C.  [para(2(a,1),2(a,1,2,1,2,2))].
% 1.26/1.53  7 inverse(inverse(double_divide(inverse(double_divide(A,double_divide(B,C))),double_divide(D,double_divide(B,D))))) = inverse(double_divide(inverse(E),inverse(double_divide(inverse(double_divide(E,C)),double_divide(F,double_divide(inverse(A),F)))))).  [para(5(a,2),1(a,2,1)),rewrite([1(9)]),flip(a)].
% 1.26/1.53  8 double_divide(double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(D),C))))),inverse(double_divide(inverse(double_divide(double_divide(inverse(double_divide(D,double_divide(E,B))),double_divide(F,double_divide(E,F))),double_divide(V6,V7))),double_divide(V8,double_divide(V6,V8))))) = V7.  [para(5(a,1),2(a,1,1))].
% 1.26/1.53  9 double_divide(inverse(inverse(double_divide(A,double_divide(B,C)))),inverse(double_divide(double_divide(inverse(D),inverse(double_divide(inverse(double_divide(D,C)),double_divide(E,double_divide(inverse(A),E))))),double_divide(F,double_divide(V6,F))))) = double_divide(B,V6).  [para(5(a,1),2(a,1,2,1,1))].
% 1.26/1.53  10 double_divide(inverse(A),double_divide(inverse(B),inverse(double_divide(inverse(double_divide(B,C)),double_divide(D,double_divide(inverse(A),D)))))) = C.  [para(5(a,1),2(a,1,2))].
% 1.26/1.53  11 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(D),C)))) = double_divide(inverse(E),inverse(double_divide(inverse(double_divide(E,inverse(double_divide(inverse(double_divide(D,double_divide(F,B))),double_divide(V6,double_divide(F,V6)))))),double_divide(V7,double_divide(inverse(A),V7))))).  [para(5(a,2),2(a,1,2,1,1,1,2)),flip(a)].
% 1.26/1.53  13 inverse(double_divide(inverse(double_divide(A,double_divide(B,double_divide(inverse(A),C)))),double_divide(D,double_divide(B,D)))) = C.  [para(5(a,2),2(a,1))].
% 1.26/1.53  48 double_divide(inverse(A),double_divide(B,inverse(A))) = double_divide(C,double_divide(B,C)).  [para(5(a,1),10(a,1,2,2,1,1)),rewrite([9(20)])].
% 1.26/1.53  54 double_divide(A,double_divide(inverse(B),inverse(double_divide(inverse(double_divide(B,C)),double_divide(D,double_divide(A,D)))))) = C.  [para(13(a,1),10(a,1,1)),rewrite([13(12)])].
% 1.26/1.53  82 double_divide(A,double_divide(B,A)) = double_divide(C,double_divide(B,C)).  [para(13(a,1),48(a,1,1)),rewrite([13(9)])].
% 1.26/1.53  85 inverse(double_divide(A,double_divide(B,A))) = inverse(double_divide(C,double_divide(B,C))).  [para(82(a,1),1(a,2,1)),rewrite([1(2)])].
% 1.26/1.53  86 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,double_divide(B,double_divide(C,B)))),double_divide(D,double_divide(E,D))))) = double_divide(C,E).  [para(82(a,1),2(a,1,2,1,1,1,2))].
% 1.26/1.53  87 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(B,double_divide(C,B))),double_divide(D,double_divide(C,D))))) = A.  [para(82(a,1),2(a,1,2,1,1,1))].
% 1.26/1.53  90 inverse(double_divide(inverse(double_divide(A,double_divide(B,A))),double_divide(C,double_divide(B,C)))) = double_divide(inverse(D),inverse(double_divide(inverse(double_divide(D,E)),double_divide(F,double_divide(inverse(E),F))))).  [para(82(a,1),5(a,1,1,1,1))].
% 1.26/1.54  93 inverse(double_divide(inverse(double_divide(A,double_divide(B,double_divide(inverse(A),B)))),double_divide(C,double_divide(D,C)))) = D.  [para(82(a,1),13(a,1,1,1,1,2))].
% 1.26/1.54  95 double_divide(double_divide(A,B),double_divide(C,double_divide(A,C))) = double_divide(D,double_divide(B,D)).  [para(82(a,1),82(a,1,2))].
% 1.26/1.54  108 inverse(double_divide(inverse(double_divide(A,double_divide(inverse(B),C))),double_divide(inverse(double_divide(inverse(double_divide(B,double_divide(D,E))),double_divide(F,double_divide(D,F)))),E))) = inverse(double_divide(inverse(double_divide(A,double_divide(V6,C))),double_divide(V7,double_divide(V6,V7)))).  [para(6(a,1),13(a,1,1,1,1,2,2)),flip(a)].
% 1.26/1.54  127 inverse(double_divide(inverse(double_divide(double_divide(A,double_divide(B,A)),double_divide(C,D))),double_divide(E,double_divide(C,E)))) = double_divide(inverse(F),inverse(double_divide(inverse(double_divide(F,D)),double_divide(V6,double_divide(inverse(double_divide(V7,double_divide(B,V7))),V6))))).  [para(85(a,1),5(a,2,2,1,2,2,1))].
% 1.26/1.54  133 inverse(double_divide(inverse(double_divide(inverse(double_divide(A,double_divide(inverse(B),C))),double_divide(inverse(double_divide(inverse(double_divide(B,double_divide(D,E))),double_divide(F,double_divide(D,F)))),E))),C)) = inverse(double_divide(V6,double_divide(inverse(A),V6))).  [para(6(a,1),85(a,1,1,2))].
% 1.26/1.54  136 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,double_divide(double_divide(B,C),double_divide(D,double_divide(B,D))))),double_divide(E,double_divide(F,E))))) = double_divide(C,F).  [para(95(a,2),2(a,1,2,1,1,1,2))].
% 1.26/1.54  142 inverse(double_divide(inverse(double_divide(A,double_divide(B,double_divide(C,B)))),double_divide(D,double_divide(double_divide(E,C),D)))) = double_divide(E,inverse(A)).  [para(95(a,1),5(a,1,1,1,1,2)),rewrite([86(20)])].
% 1.26/1.54  145 inverse(double_divide(inverse(double_divide(A,double_divide(double_divide(B,C),double_divide(D,double_divide(B,D))))),double_divide(E,double_divide(F,E)))) = double_divide(inverse(V6),inverse(double_divide(inverse(double_divide(V6,double_divide(C,F))),double_divide(V7,double_divide(inverse(A),V7))))).  [para(95(a,2),5(a,1,1,1,1,2))].
% 1.26/1.54  169 double_divide(A,double_divide(inverse(double_divide(inverse(double_divide(B,double_divide(inverse(C),D))),double_divide(inverse(double_divide(inverse(double_divide(C,double_divide(E,F))),double_divide(V6,double_divide(E,V6)))),F))),A)) = double_divide(D,double_divide(V7,double_divide(inverse(B),V7))).  [para(6(a,1),95(a,1,1)),flip(a)].
% 1.26/1.54  215 inverse(double_divide(inverse(double_divide(A,double_divide(B,double_divide(inverse(C),inverse(double_divide(inverse(double_divide(C,D)),double_divide(E,double_divide(F,E)))))))),double_divide(V6,double_divide(B,V6)))) = double_divide(inverse(F),inverse(double_divide(inverse(D),double_divide(V7,double_divide(inverse(A),V7))))).  [para(54(a,1),5(a,2,2,1,1,1))].
% 1.26/1.54  233 double_divide(A,double_divide(double_divide(inverse(B),inverse(double_divide(inverse(double_divide(B,C)),double_divide(D,double_divide(E,D))))),A)) = double_divide(C,double_divide(F,double_divide(E,F))).  [para(54(a,1),95(a,1,1)),flip(a)].
% 1.26/1.54  234 double_divide(double_divide(A,B),double_divide(double_divide(inverse(C),inverse(double_divide(inverse(double_divide(C,D)),double_divide(E,double_divide(A,E))))),D)) = double_divide(F,double_divide(B,F)).  [para(54(a,1),95(a,1,2,2))].
% 1.26/1.54  235 double_divide(double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(D,C))))),B) = double_divide(double_divide(E,D),double_divide(F,double_divide(E,F))).  [para(54(a,1),95(a,2,2)),flip(a)].
% 1.26/1.54  244 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(D,C))))) = double_divide(E,double_divide(inverse(D),inverse(double_divide(inverse(B),double_divide(F,double_divide(E,F)))))).  [para(54(a,1),54(a,1,2,2,1,1,1)),flip(a)].
% 1.26/1.54  331 double_divide(inverse(A),double_divide(B,inverse(double_divide(C,double_divide(B,C))))) = A.  [para(95(a,1),87(a,1,2,1,1,1,2)),rewrite([142(12)])].
% 1.26/1.54  354 inverse(double_divide(inverse(double_divide(A,double_divide(inverse(B),C))),double_divide(double_divide(D,inverse(double_divide(E,double_divide(D,E)))),B))) = double_divide(inverse(F),inverse(double_divide(inverse(double_divide(F,C)),double_divide(V6,double_divide(inverse(A),V6))))).  [para(331(a,1),5(a,1,1,2,2))].
% 1.26/1.54  360 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(B),C)))) = inverse(double_divide(D,double_divide(inverse(A),D))).  [para(331(a,1),13(a,1,1,1,1,2))].
% 1.26/1.54  363 double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),C) = double_divide(D,double_divide(inverse(C),D)).  [para(331(a,1),82(a,1,2))].
% 1.26/1.54  364 double_divide(inverse(A),double_divide(B,inverse(double_divide(double_divide(C,B),double_divide(D,double_divide(C,D)))))) = A.  [para(82(a,1),331(a,1,2,2,1,2))].
% 1.26/1.54  371 inverse(double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),C)) = inverse(double_divide(D,double_divide(inverse(C),D))).  [para(331(a,1),85(a,1,1,2))].
% 1.26/1.54  393 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,double_divide(double_divide(B,inverse(double_divide(C,double_divide(B,C)))),D))),double_divide(E,double_divide(F,double_divide(inverse(E),F)))))) = D.  [para(363(a,1),2(a,1,2,1,2,2))].
% 1.26/1.54  399 inverse(double_divide(inverse(double_divide(A,double_divide(B,double_divide(inverse(C),B)))),double_divide(D,double_divide(double_divide(E,inverse(double_divide(F,double_divide(E,F)))),D)))) = double_divide(inverse(V6),inverse(double_divide(inverse(double_divide(V6,C)),double_divide(V7,double_divide(inverse(A),V7))))).  [para(363(a,1),5(a,1,1,1,1,2))].
% 1.26/1.54  401 inverse(double_divide(inverse(double_divide(A,double_divide(double_divide(B,inverse(double_divide(C,double_divide(B,C)))),D))),double_divide(E,double_divide(F,double_divide(inverse(E),F))))) = double_divide(inverse(V6),inverse(double_divide(inverse(double_divide(V6,D)),double_divide(V7,double_divide(inverse(A),V7))))).  [para(363(a,1),5(a,1,1,2,2))].
% 1.26/1.54  460 double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),double_divide(inverse(C),inverse(double_divide(inverse(double_divide(C,D)),double_divide(E,double_divide(F,double_divide(inverse(E),F))))))) = D.  [para(363(a,1),54(a,1,2,2,1,2,2))].
% 1.26/1.54  463 double_divide(A,double_divide(inverse(B),inverse(double_divide(inverse(double_divide(double_divide(C,inverse(double_divide(D,double_divide(C,D)))),E)),double_divide(F,double_divide(A,F)))))) = double_divide(inverse(E),B).  [para(363(a,2),54(a,1,2,2,1,1,1))].
% 1.26/1.54  478 double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),double_divide(inverse(C),inverse(double_divide(inverse(double_divide(C,D)),double_divide(E,double_divide(inverse(F),E)))))) = double_divide(V6,double_divide(inverse(inverse(double_divide(inverse(double_divide(F,double_divide(V7,D))),double_divide(V8,double_divide(V7,V8))))),V6)).  [para(7(a,2),363(a,2,2,1))].
% 1.26/1.54  549 double_divide(inverse(A),double_divide(B,inverse(double_divide(double_divide(double_divide(C,inverse(double_divide(D,double_divide(C,D)))),B),double_divide(E,double_divide(F,double_divide(inverse(E),F))))))) = A.  [para(363(a,1),364(a,1,2,2,1,2,2))].
% 1.26/1.54  611 double_divide(double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(D),C))))),inverse(double_divide(inverse(double_divide(double_divide(inverse(double_divide(D,double_divide(E,B))),double_divide(double_divide(F,E),double_divide(double_divide(V6,F),double_divide(V7,double_divide(V6,V7))))),double_divide(V8,V9))),double_divide(V10,double_divide(V8,V10))))) = V9.  [para(95(a,2),8(a,1,2,1,1,1,1,2,2))].
% 1.26/1.54  612 double_divide(double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(D),C))))),inverse(double_divide(inverse(double_divide(double_divide(inverse(double_divide(D,double_divide(E,B))),double_divide(F,double_divide(E,F))),double_divide(double_divide(V6,V7),double_divide(V8,double_divide(V6,V8))))),double_divide(V9,double_divide(V10,V9))))) = double_divide(V7,V10).  [para(95(a,2),8(a,1,2,1,1,1,2))].
% 1.26/1.54  727 inverse(double_divide(A,double_divide(B,inverse(double_divide(C,double_divide(B,C)))))) = A.  [para(363(a,1),93(a,1,1,2)),rewrite([93(15)])].
% 1.26/1.54  741 inverse(double_divide(A,double_divide(B,A))) = double_divide(inverse(C),inverse(double_divide(C,double_divide(D,double_divide(B,D))))).  [para(727(a,1),2(a,1,2,1,1)),flip(a)].
% 1.26/1.54  749 inverse(double_divide(A,double_divide(B,inverse(double_divide(double_divide(C,B),double_divide(D,double_divide(C,D))))))) = A.  [para(82(a,1),727(a,1,1,2,2,1,2))].
% 1.26/1.54  843 inverse(double_divide(inverse(double_divide(A,double_divide(B,inverse(double_divide(C,double_divide(D,double_divide(E,D))))))),double_divide(F,double_divide(B,F)))) = double_divide(inverse(inverse(C)),inverse(double_divide(inverse(inverse(double_divide(V6,double_divide(E,V6)))),double_divide(V7,double_divide(inverse(A),V7))))).  [para(741(a,2),5(a,2,2,1,1,1))].
% 1.26/1.54  855 inverse(double_divide(A,double_divide(B,A))) = double_divide(inverse(double_divide(B,C)),inverse(double_divide(D,double_divide(C,D)))).  [para(82(a,1),741(a,2,2,1))].
% 1.26/1.54  903 double_divide(inverse(A),double_divide(B,double_divide(inverse(C),inverse(double_divide(C,double_divide(D,double_divide(B,D))))))) = A.  [para(741(a,1),331(a,1,2,2))].
% 1.26/1.54  906 inverse(double_divide(A,double_divide(inverse(B),A))) = double_divide(inverse(C),inverse(double_divide(C,double_divide(double_divide(D,inverse(double_divide(E,double_divide(D,E)))),B)))).  [para(331(a,1),741(a,2,2,1,2,2))].
% 1.26/1.54  940 inverse(double_divide(A,double_divide(B,double_divide(inverse(C),inverse(double_divide(C,double_divide(D,double_divide(B,D)))))))) = A.  [para(741(a,1),727(a,1,1,2,2))].
% 1.26/1.54  974 double_divide(inverse(inverse(double_divide(A,double_divide(B,A)))),inverse(double_divide(double_divide(inverse(C),inverse(double_divide(inverse(double_divide(C,D)),double_divide(E,double_divide(inverse(D),E))))),double_divide(F,double_divide(V6,F))))) = double_divide(B,V6).  [para(82(a,1),9(a,1,1,1,1))].
% 1.26/1.54  999 double_divide(inverse(inverse(double_divide(A,double_divide(B,C)))),inverse(double_divide(double_divide(inverse(D),inverse(double_divide(inverse(double_divide(D,C)),double_divide(E,double_divide(inverse(A),E))))),double_divide(double_divide(F,V6),double_divide(double_divide(V7,F),double_divide(V8,double_divide(V7,V8))))))) = double_divide(B,V6).  [para(95(a,2),9(a,1,2,1,2,2))].
% 1.26/1.54  1014 double_divide(inverse(inverse(double_divide(A,double_divide(B,C)))),inverse(double_divide(double_divide(inverse(D),inverse(double_divide(inverse(double_divide(D,C)),double_divide(E,double_divide(inverse(A),E))))),double_divide(double_divide(inverse(F),inverse(double_divide(inverse(double_divide(F,V6)),double_divide(V7,double_divide(V8,V7))))),V6)))) = double_divide(B,V8).  [para(54(a,1),9(a,1,2,1,2,2))].
% 1.26/1.54  1041 double_divide(inverse(inverse(double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),C))),inverse(double_divide(double_divide(inverse(D),inverse(double_divide(inverse(double_divide(D,E)),double_divide(F,double_divide(inverse(E),F))))),double_divide(V6,double_divide(V7,V6))))) = double_divide(inverse(C),V7).  [para(363(a,2),9(a,1,1,1,1))].
% 1.26/1.54  1163 double_divide(inverse(A),double_divide(B,double_divide(inverse(double_divide(B,C)),inverse(double_divide(D,double_divide(C,D)))))) = A.  [para(855(a,1),331(a,1,2,2))].
% 1.26/1.54  1173 inverse(double_divide(A,double_divide(B,A))) = double_divide(B,inverse(double_divide(C,double_divide(D,double_divide(inverse(C),D))))).  [para(363(a,1),855(a,2,2,1,2)),rewrite([727(9)])].
% 1.26/1.54  1231 inverse(double_divide(A,double_divide(inverse(double_divide(B,C)),A))) = double_divide(inverse(inverse(double_divide(D,double_divide(B,D)))),inverse(double_divide(E,double_divide(inverse(double_divide(F,double_divide(C,F))),E)))).  [para(855(a,2),855(a,2,1,1))].
% 1.26/1.54  1233 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(B),C))))) = double_divide(D,double_divide(inverse(E),inverse(double_divide(E,double_divide(F,double_divide(D,F)))))).  [para(903(a,1),2(a,1,2,1,1,1,2))].
% 1.26/1.54  1305 double_divide(inverse(A),double_divide(B,double_divide(inverse(inverse(double_divide(C,double_divide(D,double_divide(inverse(C),D))))),B))) = A.  [para(93(a,1),903(a,1,2,2,2))].
% 1.26/1.54  1345 inverse(double_divide(A,double_divide(B,double_divide(C,B)))) = inverse(double_divide(A,double_divide(D,double_divide(C,D)))).  [para(940(a,1),13(a,1,1,1))].
% 1.26/1.54  1423 double_divide(A,double_divide(B,double_divide(C,B))) = double_divide(A,double_divide(D,double_divide(C,D))).  [para(1345(a,1),87(a,1,1)),rewrite([87(12)])].
% 1.26/1.54  1481 inverse(double_divide(inverse(double_divide(A,B)),double_divide(inverse(double_divide(inverse(double_divide(C,double_divide(inverse(D),E))),double_divide(inverse(double_divide(inverse(double_divide(D,double_divide(F,V6))),double_divide(V7,double_divide(F,V7)))),V6))),E))) = double_divide(inverse(V8),inverse(double_divide(inverse(double_divide(V8,inverse(double_divide(inverse(double_divide(C,double_divide(V9,B))),double_divide(V10,double_divide(V9,V10)))))),double_divide(V11,double_divide(inverse(A),V11))))).  [para(6(a,1),11(a,1,1,2,2))].
% 1.26/1.54  1551 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(double_divide(D,inverse(double_divide(E,double_divide(D,E))))),C)))) = double_divide(inverse(F),inverse(double_divide(inverse(double_divide(F,inverse(double_divide(inverse(double_divide(V6,double_divide(inverse(double_divide(V7,B)),V6))),double_divide(V8,double_divide(V7,V8)))))),double_divide(V9,double_divide(inverse(A),V9))))).  [para(363(a,1),11(a,2,2,1,1,1,2,1,1,1))].
% 1.26/1.54  1552 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(D),C)))) = double_divide(inverse(E),inverse(double_divide(inverse(double_divide(E,inverse(double_divide(inverse(double_divide(D,double_divide(double_divide(F,inverse(double_divide(V6,double_divide(F,V6)))),B))),double_divide(V7,double_divide(V8,double_divide(inverse(V7),V8))))))),double_divide(V9,double_divide(inverse(A),V9))))).  [para(363(a,1),11(a,2,2,1,1,1,2,1,2,2))].
% 1.26/1.54  1587 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,inverse(double_divide(B,double_divide(C,double_divide(D,C)))))),double_divide(E,double_divide(inverse(F),E))))) = inverse(double_divide(F,double_divide(B,D))).  [para(93(a,1),11(a,2,2,1,1,1,2,1,1)),rewrite([1305(12)]),flip(a)].
% 1.26/1.54  1695 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(double_divide(D,inverse(double_divide(E,double_divide(D,E))))),C)))) = inverse(double_divide(A,double_divide(inverse(double_divide(F,double_divide(inverse(double_divide(V6,B)),F))),V6))).  [back_rewrite(1551),rewrite([1587(29)])].
% 1.26/1.54  1727 inverse(double_divide(inverse(double_divide(A,B)),double_divide(inverse(double_divide(inverse(double_divide(C,double_divide(inverse(D),E))),double_divide(inverse(double_divide(inverse(double_divide(D,double_divide(F,V6))),double_divide(V7,double_divide(F,V7)))),V6))),E))) = inverse(double_divide(A,double_divide(inverse(double_divide(C,double_divide(V8,B))),V8))).  [back_rewrite(1481),rewrite([1587(35)])].
% 1.26/1.54  1856 double_divide(A,double_divide(inverse(double_divide(inverse(double_divide(B,double_divide(inverse(C),D))),double_divide(inverse(double_divide(inverse(double_divide(C,double_divide(E,F))),double_divide(V6,double_divide(E,V6)))),F))),D)) = double_divide(A,double_divide(V7,double_divide(inverse(B),V7))).  [para(6(a,1),1423(a,1,2,2))].
% 1.26/1.54  1867 double_divide(A,double_divide(double_divide(inverse(B),inverse(double_divide(inverse(double_divide(B,C)),double_divide(D,double_divide(E,D))))),C)) = double_divide(A,double_divide(F,double_divide(E,F))).  [para(54(a,1),1423(a,1,2,2))].
% 1.26/1.54  1970 double_divide(inverse(A),double_divide(B,double_divide(inverse(double_divide(inverse(double_divide(double_divide(C,inverse(double_divide(D,double_divide(C,D)))),E)),inverse(double_divide(F,double_divide(E,F))))),B))) = A.  [para(363(a,1),1163(a,1,2))].
% 1.26/1.54  2041 inverse(double_divide(A,double_divide(B,A))) = double_divide(B,inverse(double_divide(C,double_divide(inverse(double_divide(inverse(double_divide(C,double_divide(D,E))),double_divide(F,double_divide(D,F)))),E)))).  [para(2(a,1),1173(a,2,2,1,2,2))].
% 1.26/1.54  2055 inverse(double_divide(inverse(double_divide(A,double_divide(B,inverse(double_divide(C,double_divide(inverse(A),C)))))),double_divide(D,double_divide(B,D)))) = inverse(double_divide(E,double_divide(F,double_divide(inverse(E),F)))).  [para(1173(a,2),13(a,1,1,1,1,2,2))].
% 1.26/1.54  2121 double_divide(inverse(A),double_divide(B,double_divide(C,double_divide(inverse(B),C)))) = A.  [para(1173(a,2),364(a,1,2,2,1,1)),rewrite([87(14)])].
% 1.26/1.54  2145 inverse(double_divide(A,double_divide(B,double_divide(C,double_divide(inverse(B),C))))) = A.  [para(1173(a,2),749(a,1,1,2,2,1,1)),rewrite([87(13)])].
% 1.26/1.54  2201 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(D),C)))) = double_divide(inverse(E),inverse(double_divide(inverse(double_divide(E,inverse(double_divide(D,double_divide(double_divide(F,inverse(double_divide(V6,double_divide(F,V6)))),B))))),double_divide(V7,double_divide(inverse(A),V7))))).  [back_rewrite(1552),rewrite([2121(20)])].
% 1.26/1.54  2207 double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),double_divide(inverse(C),inverse(double_divide(C,D)))) = D.  [back_rewrite(460),rewrite([2121(12)])].
% 1.26/1.54  2210 inverse(double_divide(A,double_divide(double_divide(B,inverse(double_divide(C,double_divide(B,C)))),D))) = double_divide(inverse(E),inverse(double_divide(inverse(double_divide(E,D)),double_divide(F,double_divide(inverse(A),F))))).  [back_rewrite(401),rewrite([2121(12)])].
% 1.26/1.54  2211 double_divide(inverse(A),inverse(double_divide(A,double_divide(double_divide(B,inverse(double_divide(C,double_divide(B,C)))),D)))) = D.  [back_rewrite(393),rewrite([2121(13)])].
% 1.26/1.54  2217 double_divide(inverse(A),double_divide(B,double_divide(double_divide(C,inverse(double_divide(D,double_divide(C,D)))),B))) = A.  [back_rewrite(549),rewrite([2145(12)])].
% 1.26/1.54  2221 inverse(double_divide(A,double_divide(inverse(B),A))) = B.  [back_rewrite(906),rewrite([2211(13)])].
% 1.26/1.54  2230 inverse(double_divide(A,double_divide(B,double_divide(inverse(C),B)))) = double_divide(inverse(D),inverse(double_divide(inverse(double_divide(D,C)),double_divide(E,double_divide(inverse(A),E))))).  [back_rewrite(399),rewrite([2217(12)])].
% 1.26/1.54  2249 inverse(double_divide(inverse(double_divide(A,double_divide(B,A))),double_divide(C,double_divide(B,C)))) = inverse(double_divide(D,double_divide(E,double_divide(inverse(D),E)))).  [back_rewrite(2055),rewrite([2221(4)])].
% 1.26/1.54  2271 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(double_divide(D,inverse(double_divide(E,double_divide(D,E))))),C)))) = inverse(double_divide(A,double_divide(double_divide(F,B),F))).  [back_rewrite(1695),rewrite([2221(16)])].
% 1.26/1.54  2281 double_divide(inverse(inverse(double_divide(A,double_divide(B,A)))),double_divide(C,double_divide(D,C))) = double_divide(B,D).  [back_rewrite(1231),rewrite([2221(5),2221(11)]),flip(a)].
% 1.26/1.54  2332 inverse(double_divide(double_divide(A,inverse(double_divide(B,double_divide(A,B)))),C)) = C.  [back_rewrite(371),rewrite([2221(10)])].
% 1.26/1.54  2333 inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(inverse(B),C)))) = A.  [back_rewrite(360),rewrite([2221(11)])].
% 1.26/1.54  2341 inverse(double_divide(inverse(double_divide(inverse(double_divide(A,double_divide(inverse(B),C))),double_divide(inverse(double_divide(inverse(double_divide(B,double_divide(D,E))),double_divide(F,double_divide(D,F)))),E))),C)) = A.  [back_rewrite(133),rewrite([2221(20)])].
% 1.26/1.54  2370 inverse(double_divide(inverse(double_divide(A,double_divide(B,inverse(double_divide(C,double_divide(D,double_divide(E,D))))))),double_divide(F,double_divide(B,F)))) = double_divide(inverse(inverse(C)),inverse(double_divide(E,inverse(A)))).  [back_rewrite(843),rewrite([2281(21)])].
% 1.26/1.54  2376 double_divide(inverse(A),double_divide(B,double_divide(inverse(double_divide(C,inverse(double_divide(D,double_divide(C,D))))),B))) = A.  [back_rewrite(1970),rewrite([2332(7)])].
% 1.26/1.54  2382 double_divide(inverse(A),inverse(double_divide(double_divide(inverse(B),B),double_divide(C,double_divide(D,C))))) = double_divide(inverse(A),D).  [back_rewrite(1041),rewrite([2332(6),2333(9)])].
% 1.26/1.54  2388 double_divide(A,double_divide(inverse(B),inverse(double_divide(C,double_divide(D,double_divide(A,D)))))) = double_divide(inverse(C),B).  [back_rewrite(463),rewrite([2332(7)])].
% 1.26/1.54  2401 double_divide(inverse(A),A) = double_divide(inverse(B),B).  [back_rewrite(1233),rewrite([2333(8),2388(9)])].
% 1.26/1.54  2408 double_divide(inverse(inverse(double_divide(A,double_divide(B,A)))),C) = double_divide(B,C).  [back_rewrite(974),rewrite([2333(12),2382(11)])].
% 1.26/1.54  2422 inverse(double_divide(inverse(double_divide(A,double_divide(B,A))),double_divide(C,double_divide(B,C)))) = double_divide(inverse(D),D).  [back_rewrite(90),rewrite([2333(15)])].
% 1.26/1.54  2464 inverse(double_divide(A,double_divide(double_divide(B,C),B))) = inverse(double_divide(A,C)).  [back_rewrite(2271),rewrite([2376(10)]),flip(a)].
% 1.26/1.54  2557 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),double_divide(C,double_divide(D,C))))) = double_divide(inverse(inverse(B)),D).  [back_rewrite(244),rewrite([2388(16)])].
% 1.26/1.54  2564 double_divide(A,double_divide(inverse(inverse(B)),A)) = B.  [back_rewrite(54),rewrite([2557(8)])].
% 1.26/1.54  2566 double_divide(inverse(A),A) = c_0.  [new_symbol(2401)].
% 1.26/1.54  2568 double_divide(A,double_divide(B,double_divide(C,B))) = double_divide(A,C).  [back_rewrite(2281),rewrite([2408(7)])].
% 1.26/1.54  2738 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),inverse(C)))) = inverse(double_divide(C,inverse(B))).  [back_rewrite(2230),rewrite([2568(4),2568(10)]),flip(a)].
% 1.26/1.54  2740 inverse(double_divide(A,double_divide(double_divide(B,inverse(double_divide(C,double_divide(B,C)))),D))) = inverse(double_divide(A,inverse(D))).  [back_rewrite(2210),rewrite([2568(14),2738(14)])].
% 1.26/1.54  2743 inverse(double_divide(inverse(double_divide(A,B)),inverse(C))) = inverse(double_divide(A,inverse(inverse(double_divide(C,inverse(B)))))).  [back_rewrite(2201),rewrite([2568(6),2740(13),2568(15),2738(15)])].
% 1.26/1.54  2773 double_divide(A,double_divide(double_divide(inverse(B),inverse(double_divide(inverse(double_divide(B,C)),D))),C)) = double_divide(A,D).  [back_rewrite(1867),rewrite([2568(6),2568(11)])].
% 1.26/1.54  2867 double_divide(inverse(inverse(double_divide(A,double_divide(B,C)))),inverse(double_divide(double_divide(inverse(D),inverse(double_divide(D,inverse(inverse(double_divide(A,inverse(C))))))),E))) = double_divide(B,E).  [back_rewrite(1014),rewrite([2568(11),2743(10),2568(18),2773(20)])].
% 1.26/1.54  2873 double_divide(A,double_divide(double_divide(B,C),double_divide(double_divide(D,B),D))) = double_divide(A,C).  [back_rewrite(999),rewrite([2568(11),2743(10),2568(17),2867(19)])].
% 1.26/1.54  2949 double_divide(double_divide(inverse(A),inverse(double_divide(A,inverse(inverse(double_divide(B,inverse(C))))))),inverse(double_divide(inverse(double_divide(double_divide(inverse(double_divide(B,double_divide(D,C))),D),E)),F))) = double_divide(E,F).  [back_rewrite(612),rewrite([2568(7),2743(6),2568(14),2568(16),2464(16),2568(17)])].
% 1.26/1.54  2950 double_divide(double_divide(A,B),A) = B.  [back_rewrite(611),rewrite([2568(7),2743(6),2568(16),2873(16),2568(18),2949(18)])].
% 1.26/1.54  2975 double_divide(inverse(double_divide(A,double_divide(B,C))),B) = inverse(inverse(double_divide(A,inverse(C)))).  [back_rewrite(478),rewrite([2568(11),2743(10),2207(13),2568(10),2564(12)]),flip(a)].
% 1.26/1.54  2988 double_divide(inverse(A),inverse(double_divide(A,inverse(inverse(double_divide(B,inverse(C))))))) = inverse(inverse(inverse(double_divide(B,inverse(C))))).  [back_rewrite(354),rewrite([2740(11),2975(6),2568(12),2743(11)]),flip(a)].
% 1.26/1.54  3010 double_divide(double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),C))),B) = C.  [back_rewrite(235),rewrite([2568(6),2568(11),2950(9)])].
% 1.26/1.54  3011 double_divide(A,double_divide(B,A)) = B.  [back_rewrite(234),rewrite([2568(7),3010(8),2950(2)]),flip(a)].
% 1.26/1.54  3012 double_divide(inverse(A),inverse(double_divide(inverse(double_divide(A,B)),C))) = double_divide(B,C).  [back_rewrite(233),rewrite([3011(5),3011(8),3011(8)])].
% 1.26/1.54  3017 inverse(inverse(inverse(double_divide(A,inverse(double_divide(B,C)))))) = double_divide(inverse(C),inverse(double_divide(inverse(B),inverse(A)))).  [back_rewrite(215),rewrite([3011(5),3012(6),3011(6),2975(5),3011(11)])].
% 1.26/1.54  3019 inverse(double_divide(inverse(double_divide(A,B)),C)) = double_divide(inverse(C),inverse(double_divide(inverse(B),inverse(A)))).  [back_rewrite(145),rewrite([3011(3),2950(2),3011(4),3011(11),2743(11),2988(13),3017(10)])].
% 1.26/1.54  3022 double_divide(inverse(A),double_divide(inverse(B),inverse(double_divide(inverse(C),inverse(A))))) = double_divide(C,B).  [back_rewrite(136),rewrite([3011(4),2950(3),3011(5),3019(5)])].
% 1.26/1.54  3023 inverse(inverse(inverse(double_divide(A,inverse(B))))) = double_divide(B,inverse(A)).  [back_rewrite(127),rewrite([3011(2),3011(5),2975(4),3011(10),3011(11),3019(11),3022(14)])].
% 1.26/1.54  3030 inverse(inverse(A)) = A.  [back_rewrite(2341),rewrite([3011(9),2975(8),3023(9),2950(7),2975(6),3023(5),2950(3)])].
% 1.26/1.54  3035 double_divide(A,double_divide(double_divide(double_divide(inverse(B),inverse(double_divide(B,inverse(C)))),double_divide(D,inverse(double_divide(inverse(E),C)))),E)) = double_divide(A,inverse(D)).  [back_rewrite(1856),rewrite([3011(9),2975(8),3030(8),3019(10),3019(5),3030(3),3019(11),3030(7),3030(8),3011(15)])].
% 1.26/1.54  3038 inverse(double_divide(A,double_divide(B,inverse(C)))) = double_divide(B,inverse(double_divide(inverse(C),inverse(A)))).  [back_rewrite(1727),rewrite([3011(11),2975(10),3030(10),3019(12),3019(7),3030(5),3019(13),3030(9),3030(10),3035(14),3019(5),3030(2),2975(9),3030(9)]),flip(a)].
% 1.26/1.54  3056 double_divide(double_divide(inverse(A),inverse(double_divide(A,inverse(B)))),double_divide(C,inverse(double_divide(inverse(D),B)))) = double_divide(D,inverse(C)).  [back_rewrite(169),rewrite([3011(9),2975(8),3030(8),3019(10),3019(5),3030(3),3019(11),3030(7),3030(8),3011(12),3011(13)])].
% 1.26/1.54  3060 inverse(double_divide(A,inverse(B))) = double_divide(B,inverse(A)).  [back_rewrite(108),rewrite([3011(9),2975(8),3030(8),3019(10),3019(5),3030(3),3019(11),3030(7),3030(8),3056(10),3011(7),2975(6),3030(6)]),flip(a)].
% 1.26/1.54  3067 inverse(c_0) = c_0.  [back_rewrite(2422),rewrite([3011(2),3011(3),2566(2),2566(4)])].
% 1.26/1.54  3073 inverse(double_divide(A,double_divide(B,C))) = double_divide(B,double_divide(A,inverse(C))).  [back_rewrite(2370),rewrite([3011(2),3038(5),3060(5),3030(3),3011(5),2950(4),3030(5),3060(6)])].
% 1.26/1.54  3079 double_divide(A,inverse(A)) = c_0.  [back_rewrite(2249),rewrite([3011(2),3011(3),2566(2),3067(2),3011(4),3060(4)]),flip(a)].
% 1.26/1.54  3085 double_divide(A,c_0) = inverse(A).  [back_rewrite(2041),rewrite([3011(2),3073(4),3011(6),2950(5),3060(4),2950(4),3079(3),3067(3)]),flip(a)].
% 1.26/1.54  3140 $F # answer(prove_these_axioms_2).  [back_rewrite(4),rewrite([3079(5),3067(3),3085(3),3030(3)]),xx(a)].
% 1.26/1.54  
% 1.26/1.54  % SZS output end Refutation
% 1.26/1.54  ============================== end of proof ==========================
% 1.26/1.54  
% 1.26/1.54  ============================== STATISTICS ============================
% 1.26/1.54  
% 1.26/1.54  Given=32. Generated=6174. Kept=3138. proofs=1.
% 1.26/1.54  Usable=1. Sos=27. Demods=121. Limbo=94, Disabled=3019. Hints=0.
% 1.26/1.54  Megabytes=4.98.
% 1.26/1.54  User_CPU=0.53, System_CPU=0.01, Wall_clock=1.
% 1.26/1.54  
% 1.26/1.54  ============================== end of statistics =====================
% 1.26/1.54  
% 1.26/1.54  ============================== end of search =========================
% 1.26/1.54  
% 1.26/1.54  THEOREM PROVED
% 1.26/1.54  % SZS status Unsatisfiable
% 1.26/1.54  
% 1.26/1.54  Exiting with 1 proof.
% 1.26/1.54  
% 1.26/1.54  Process 32573 exit (max_proofs) Mon Jun 13 09:47:41 2022
% 1.26/1.54  Prover9 interrupted
%------------------------------------------------------------------------------