TSTP Solution File: GRP124-3.004 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : GRP124-3.004 : TPTP v8.1.0. Released v1.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n013.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 11:17:20 EDT 2022

% Result   : Unsatisfiable 0.74s 1.05s
% Output   : Refutation 0.74s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : GRP124-3.004 : TPTP v8.1.0. Released v1.2.0.
% 0.03/0.13  % Command  : tptp2X_and_run_prover9 %d %s
% 0.14/0.34  % Computer : n013.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 : Mon Jun 13 09:40:43 EDT 2022
% 0.14/0.34  % CPUTime  : 
% 0.43/1.00  ============================== Prover9 ===============================
% 0.43/1.00  Prover9 (32) version 2009-11A, November 2009.
% 0.43/1.00  Process 16785 was started by sandbox on n013.cluster.edu,
% 0.43/1.00  Mon Jun 13 09:40:44 2022
% 0.43/1.00  The command was "/export/starexec/sandbox/solver/bin/prover9 -t 300 -f /tmp/Prover9_16632_n013.cluster.edu".
% 0.43/1.00  ============================== end of head ===========================
% 0.43/1.00  
% 0.43/1.00  ============================== INPUT =================================
% 0.43/1.00  
% 0.43/1.00  % Reading from file /tmp/Prover9_16632_n013.cluster.edu
% 0.43/1.00  
% 0.43/1.00  set(prolog_style_variables).
% 0.43/1.00  set(auto2).
% 0.43/1.00      % set(auto2) -> set(auto).
% 0.43/1.00      % set(auto) -> set(auto_inference).
% 0.43/1.00      % set(auto) -> set(auto_setup).
% 0.43/1.00      % set(auto_setup) -> set(predicate_elim).
% 0.43/1.00      % set(auto_setup) -> assign(eq_defs, unfold).
% 0.43/1.00      % set(auto) -> set(auto_limits).
% 0.43/1.00      % set(auto_limits) -> assign(max_weight, "100.000").
% 0.43/1.00      % set(auto_limits) -> assign(sos_limit, 20000).
% 0.43/1.00      % set(auto) -> set(auto_denials).
% 0.43/1.00      % set(auto) -> set(auto_process).
% 0.43/1.00      % set(auto2) -> assign(new_constants, 1).
% 0.43/1.00      % set(auto2) -> assign(fold_denial_max, 3).
% 0.43/1.00      % set(auto2) -> assign(max_weight, "200.000").
% 0.43/1.00      % set(auto2) -> assign(max_hours, 1).
% 0.43/1.00      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 0.43/1.00      % set(auto2) -> assign(max_seconds, 0).
% 0.43/1.00      % set(auto2) -> assign(max_minutes, 5).
% 0.43/1.00      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 0.43/1.00      % set(auto2) -> set(sort_initial_sos).
% 0.43/1.00      % set(auto2) -> assign(sos_limit, -1).
% 0.43/1.00      % set(auto2) -> assign(lrs_ticks, 3000).
% 0.43/1.00      % set(auto2) -> assign(max_megs, 400).
% 0.43/1.00      % set(auto2) -> assign(stats, some).
% 0.43/1.00      % set(auto2) -> clear(echo_input).
% 0.43/1.00      % set(auto2) -> set(quiet).
% 0.43/1.00      % set(auto2) -> clear(print_initial_clauses).
% 0.43/1.00      % set(auto2) -> clear(print_given).
% 0.43/1.00  assign(lrs_ticks,-1).
% 0.43/1.00  assign(sos_limit,10000).
% 0.43/1.00  assign(order,kbo).
% 0.43/1.00  set(lex_order_vars).
% 0.43/1.00  clear(print_given).
% 0.43/1.00  
% 0.43/1.00  % formulas(sos).  % not echoed (44 formulas)
% 0.43/1.00  
% 0.43/1.00  ============================== end of input ==========================
% 0.43/1.00  
% 0.43/1.00  % From the command line: assign(max_seconds, 300).
% 0.43/1.00  
% 0.43/1.00  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 0.43/1.00  
% 0.43/1.00  % Formulas that are not ordinary clauses:
% 0.43/1.00  
% 0.43/1.00  ============================== end of process non-clausal formulas ===
% 0.43/1.00  
% 0.43/1.00  ============================== PROCESS INITIAL CLAUSES ===============
% 0.43/1.00  
% 0.43/1.00  ============================== PREDICATE ELIMINATION =================
% 0.43/1.00  1 -cycle(A,B) | -cycle(A,C) | equalish(B,C) # label(cycle1) # label(axiom).  [assumption].
% 0.43/1.00  2 -equalish(e_1,e_2) # label(e_1_is_not_e_2) # label(axiom).  [assumption].
% 0.43/1.00  3 -equalish(e_1,e_3) # label(e_1_is_not_e_3) # label(axiom).  [assumption].
% 0.43/1.00  4 -equalish(e_1,e_4) # label(e_1_is_not_e_4) # label(axiom).  [assumption].
% 0.43/1.00  5 -equalish(e_2,e_1) # label(e_2_is_not_e_1) # label(axiom).  [assumption].
% 0.43/1.00  6 -equalish(e_2,e_3) # label(e_2_is_not_e_3) # label(axiom).  [assumption].
% 0.43/1.00  7 -equalish(e_2,e_4) # label(e_2_is_not_e_4) # label(axiom).  [assumption].
% 0.43/1.00  8 -equalish(e_3,e_1) # label(e_3_is_not_e_1) # label(axiom).  [assumption].
% 0.43/1.00  9 -equalish(e_3,e_2) # label(e_3_is_not_e_2) # label(axiom).  [assumption].
% 0.43/1.00  10 -equalish(e_3,e_4) # label(e_3_is_not_e_4) # label(axiom).  [assumption].
% 0.43/1.00  11 -equalish(e_4,e_1) # label(e_4_is_not_e_1) # label(axiom).  [assumption].
% 0.43/1.00  12 -equalish(e_4,e_2) # label(e_4_is_not_e_2) # label(axiom).  [assumption].
% 0.43/1.00  13 -equalish(e_4,e_3) # label(e_4_is_not_e_3) # label(axiom).  [assumption].
% 0.43/1.00  Derived: -cycle(A,e_1) | -cycle(A,e_2).  [resolve(1,c,2,a)].
% 0.43/1.00  Derived: -cycle(A,e_1) | -cycle(A,e_3).  [resolve(1,c,3,a)].
% 0.43/1.00  Derived: -cycle(A,e_1) | -cycle(A,e_4).  [resolve(1,c,4,a)].
% 0.43/1.00  Derived: -cycle(A,e_2) | -cycle(A,e_3).  [resolve(1,c,6,a)].
% 0.43/1.00  Derived: -cycle(A,e_2) | -cycle(A,e_4).  [resolve(1,c,7,a)].
% 0.43/1.00  Derived: -cycle(A,e_3) | -cycle(A,e_4).  [resolve(1,c,10,a)].
% 0.43/1.00  14 -product(A,B,C) | -product(A,B,D) | equalish(C,D) # label(product_total_function2) # label(axiom).  [assumption].
% 0.43/1.00  Derived: -product(A,B,e_1) | -product(A,B,e_2).  [resolve(14,c,2,a)].
% 0.43/1.00  Derived: -product(A,B,e_1) | -product(A,B,e_3).  [resolve(14,c,3,a)].
% 0.43/1.00  Derived: -product(A,B,e_1) | -product(A,B,e_4).  [resolve(14,c,4,a)].
% 0.43/1.00  Derived: -product(A,B,e_2) | -product(A,B,e_3).  [resolve(14,c,6,a)].
% 0.43/1.00  Derived: -product(A,B,e_2) | -product(A,B,e_4).  [resolve(14,c,7,a)].
% 0.43/1.00  Derived: -product(A,B,e_3) | -product(A,B,e_4).  [resolve(14,c,10,a)].
% 0.43/1.00  15 -product(A,B,C) | -product(A,D,C) | equalish(B,D) # label(product_right_cancellation) # label(axiom).  [assumption].
% 0.43/1.00  Derived: -product(A,e_1,B) | -product(A,e_2,B).  [resolve(15,c,2,a)].
% 0.43/1.00  Derived: -product(A,e_1,B) | -product(A,e_3,B).  [resolve(15,c,3,a)].
% 0.43/1.00  Derived: -product(A,e_1,B) | -product(A,e_4,B).  [resolve(15,c,4,a)].
% 0.43/1.00  Derived: -product(A,e_2,B) | -product(A,e_3,B).  [resolve(15,c,6,a)].
% 0.43/1.00  Derived: -product(A,e_2,B) | -product(A,e_4,B).  [resolve(15,c,7,a)].
% 0.43/1.00  Derived: -product(A,e_3,B) | -product(A,e_4,B).  [resolve(15,c,10,a)].
% 0.43/1.00  16 -product(A,B,C) | -product(D,B,C) | equalish(A,D) # label(product_left_cancellation) # label(axiom).  [assumption].
% 0.43/1.00  Derived: -product(e_1,A,B) | -product(e_2,A,B).  [resolve(16,c,2,a)].
% 0.43/1.00  Derived: -product(e_1,A,B) | -product(e_3,A,B).  [resolve(16,c,3,a)].
% 0.43/1.00  Derived: -product(e_1,A,B) | -product(e_4,A,B).  [resolve(16,c,4,a)].
% 0.43/1.00  Derived: -product(e_2,A,B) | -product(e_3,A,B).  [resolve(16,c,6,a)].
% 0.43/1.00  Derived: -product(e_2,A,B) | -product(e_4,A,B).  [resolve(16,c,7,a)].
% 0.43/1.00  Derived: -product(e_3,A,B) | -product(e_4,A,B).  [resolve(16,c,10,a)].
% 0.43/1.00  17 -cycle(A,B) | -product(A,e_1,C) | -greater(B,e_0) | -next(A,D) | equalish(C,D) # label(cycle7) # label(axiom).  [assumption].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_1) | -greater(B,e_0) | -next(A,e_2).  [resolve(17,e,2,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_1) | -greater(B,e_0) | -next(A,e_3).  [resolve(17,e,3,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_1) | -greater(B,e_0) | -next(A,e_4).  [resolve(17,e,4,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_2) | -greater(B,e_0) | -next(A,e_1).  [resolve(17,e,5,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_2) | -greater(B,e_0) | -next(A,e_3).  [resolve(17,e,6,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_2) | -greater(B,e_0) | -next(A,e_4).  [resolve(17,e,7,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_3) | -greater(B,e_0) | -next(A,e_1).  [resolve(17,e,8,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_3) | -greater(B,e_0) | -next(A,e_2).  [resolve(17,e,9,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_3) | -greater(B,e_0) | -next(A,e_4).  [resolve(17,e,10,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_4) | -greater(B,e_0) | -next(A,e_1).  [resolve(17,e,11,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_4) | -greater(B,e_0) | -next(A,e_2).  [resolve(17,e,12,a)].
% 0.43/1.00  Derived: -cycle(A,B) | -product(A,e_1,e_4) | -greater(B,e_0) | -next(A,e_3).  [resolve(17,e,13,a)].
% 0.43/1.00  18 -cycle(A,B) | -cycle(C,D) | -next(A,C) | -greater(B,e_0) | -next(D,E) | equalish(B,E) # label(cycle4) # label(axiom).  [assumption].
% 0.43/1.00  Derived: -cycle(A,e_1) | -cycle(B,C) | -next(A,B) | -greater(e_1,e_0) | -next(C,e_2).  [resolve(18,f,2,a)].
% 0.43/1.00  Derived: -cycle(A,e_1) | -cycle(B,C) | -next(A,B) | -greater(e_1,e_0) | -next(C,e_3).  [resolve(18,f,3,a)].
% 0.43/1.00  Derived: -cycle(A,e_1) | -cycle(B,C) | -next(A,B) | -greater(e_1,e_0) | -next(C,e_4).  [resolve(18,f,4,a)].
% 0.43/1.00  Derived: -cycle(A,e_2) | -cycle(B,C) | -next(A,B) | -greater(e_2,e_0) | -next(C,e_1).  [resolve(18,f,5,a)].
% 0.43/1.00  Derived: -cycle(A,e_2) | -cycle(B,C) | -next(A,B) | -greater(e_2,e_0) | -next(C,e_3).  [resolve(18,f,6,a)].
% 0.43/1.00  Derived: -cycle(A,e_2) | -cycle(B,C) | -next(A,B) | -greater(e_2,e_0) | -next(C,e_4).  [resolve(18,f,7,a)].
% 0.43/1.00  Derived: -cycle(A,e_3) | -cycle(B,C) | -next(A,B) | -greater(e_3,e_0) | -next(C,e_1).  [resolve(18,f,8,a)].
% 0.43/1.00  Derived: -cycle(A,e_3) | -cycle(B,C) | -next(A,B) | -greater(e_3,e_0) | -next(C,e_2).  [resolve(18,f,9,a)].
% 0.43/1.00  Derived: -cycle(A,e_3) | -cycle(B,C) | -next(A,B) | -greater(e_3,e_0) | -next(C,e_4).  [resolve(18,f,10,a)].
% 0.43/1.00  Derived: -cycle(A,e_4) | -cycle(B,C) | -next(A,B) | -greater(e_4,e_0) | -next(C,e_1).  [resolve(18,f,11,a)].
% 0.43/1.00  Derived: -cycle(A,e_4) | -cycle(B,C) | -next(A,B) | -greater(e_4,e_0) | -next(C,e_2).  [resolve(18,f,12,a)].
% 0.43/1.00  Derived: -cycle(A,e_4) | -cycle(B,C) | -next(A,B) | -greater(e_4,e_0) | -next(C,e_3).  [resolve(18,f,13,a)].
% 0.43/1.00  19 -product(A,B,C) | -product(D,E,C) | -product(F,A,B) | -product(F,D,E) | equalish(A,D) # label(qg2_1) # label(negated_conjecture).  [assumption].
% 0.74/1.05  Derived: -product(e_1,A,B) | -product(e_2,C,B) | -product(D,e_1,A) | -product(D,e_2,C).  [resolve(19,e,2,a)].
% 0.74/1.05  Derived: -product(e_1,A,B) | -product(e_3,C,B) | -product(D,e_1,A) | -product(D,e_3,C).  [resolve(19,e,3,a)].
% 0.74/1.05  Derived: -product(e_1,A,B) | -product(e_4,C,B) | -product(D,e_1,A) | -product(D,e_4,C).  [resolve(19,e,4,a)].
% 0.74/1.05  Derived: -product(e_2,A,B) | -product(e_3,C,B) | -product(D,e_2,A) | -product(D,e_3,C).  [resolve(19,e,6,a)].
% 0.74/1.05  Derived: -product(e_2,A,B) | -product(e_4,C,B) | -product(D,e_2,A) | -product(D,e_4,C).  [resolve(19,e,7,a)].
% 0.74/1.05  Derived: -product(e_3,A,B) | -product(e_4,C,B) | -product(D,e_3,A) | -product(D,e_4,C).  [resolve(19,e,10,a)].
% 0.74/1.05  20 -product(A,B,C) | -product(D,E,C) | -product(F,A,B) | -product(F,D,E) | equalish(B,E) # label(qg2_2) # label(negated_conjecture).  [assumption].
% 0.74/1.05  Derived: -product(A,e_1,B) | -product(C,e_2,B) | -product(D,A,e_1) | -product(D,C,e_2).  [resolve(20,e,2,a)].
% 0.74/1.05  Derived: -product(A,e_1,B) | -product(C,e_3,B) | -product(D,A,e_1) | -product(D,C,e_3).  [resolve(20,e,3,a)].
% 0.74/1.05  Derived: -product(A,e_1,B) | -product(C,e_4,B) | -product(D,A,e_1) | -product(D,C,e_4).  [resolve(20,e,4,a)].
% 0.74/1.05  Derived: -product(A,e_2,B) | -product(C,e_3,B) | -product(D,A,e_2) | -product(D,C,e_3).  [resolve(20,e,6,a)].
% 0.74/1.05  Derived: -product(A,e_2,B) | -product(C,e_4,B) | -product(D,A,e_2) | -product(D,C,e_4).  [resolve(20,e,7,a)].
% 0.74/1.05  Derived: -product(A,e_3,B) | -product(C,e_4,B) | -product(D,A,e_3) | -product(D,C,e_4).  [resolve(20,e,10,a)].
% 0.74/1.05  
% 0.74/1.05  ============================== end predicate elimination =============
% 0.74/1.05  
% 0.74/1.05  Auto_denials:  (non-Horn, no changes).
% 0.74/1.05  
% 0.74/1.05  Term ordering decisions:
% 0.74/1.05  Function symbol KB weights:  e_1=1. e_2=1. e_3=1. e_4=1. e_0=1.
% 0.74/1.05  
% 0.74/1.05  ============================== end of process initial clauses ========
% 0.74/1.05  
% 0.74/1.05  ============================== CLAUSES FOR SEARCH ====================
% 0.74/1.05  
% 0.74/1.05  ============================== end of clauses for search =============
% 0.74/1.05  
% 0.74/1.05  ============================== SEARCH ================================
% 0.74/1.05  
% 0.74/1.05  % Starting search at 0.02 seconds.
% 0.74/1.05  
% 0.74/1.05  ============================== PROOF =================================
% 0.74/1.05  % SZS status Unsatisfiable
% 0.74/1.05  % SZS output start Refutation
% 0.74/1.05  
% 0.74/1.05  % Proof 1 at 0.06 (+ 0.00) seconds.
% 0.74/1.05  % Length of proof is 88.
% 0.74/1.05  % Level of proof is 14.
% 0.74/1.05  % Maximum clause weight is 20.000.
% 0.74/1.05  % Given clauses 269.
% 0.74/1.05  
% 0.74/1.05  2 -equalish(e_1,e_2) # label(e_1_is_not_e_2) # label(axiom).  [assumption].
% 0.74/1.05  3 -equalish(e_1,e_3) # label(e_1_is_not_e_3) # label(axiom).  [assumption].
% 0.74/1.05  4 -equalish(e_1,e_4) # label(e_1_is_not_e_4) # label(axiom).  [assumption].
% 0.74/1.05  5 -equalish(e_2,e_1) # label(e_2_is_not_e_1) # label(axiom).  [assumption].
% 0.74/1.05  6 -equalish(e_2,e_3) # label(e_2_is_not_e_3) # label(axiom).  [assumption].
% 0.74/1.05  7 -equalish(e_2,e_4) # label(e_2_is_not_e_4) # label(axiom).  [assumption].
% 0.74/1.05  8 -equalish(e_3,e_1) # label(e_3_is_not_e_1) # label(axiom).  [assumption].
% 0.74/1.05  10 -equalish(e_3,e_4) # label(e_3_is_not_e_4) # label(axiom).  [assumption].
% 0.74/1.05  15 -product(A,B,C) | -product(A,D,C) | equalish(B,D) # label(product_right_cancellation) # label(axiom).  [assumption].
% 0.74/1.05  16 -product(A,B,C) | -product(D,B,C) | equalish(A,D) # label(product_left_cancellation) # label(axiom).  [assumption].
% 0.74/1.05  17 -cycle(A,B) | -product(A,e_1,C) | -greater(B,e_0) | -next(A,D) | equalish(C,D) # label(cycle7) # label(axiom).  [assumption].
% 0.74/1.05  18 -cycle(A,B) | -cycle(C,D) | -next(A,C) | -greater(B,e_0) | -next(D,E) | equalish(B,E) # label(cycle4) # label(axiom).  [assumption].
% 0.74/1.05  20 -product(A,B,C) | -product(D,E,C) | -product(F,A,B) | -product(F,D,E) | equalish(B,E) # label(qg2_2) # label(negated_conjecture).  [assumption].
% 0.74/1.05  21 group_element(e_1) # label(element_1) # label(axiom).  [assumption].
% 0.74/1.05  22 group_element(e_2) # label(element_2) # label(axiom).  [assumption].
% 0.74/1.05  23 group_element(e_3) # label(element_3) # label(axiom).  [assumption].
% 0.74/1.05  24 group_element(e_4) # label(element_4) # label(axiom).  [assumption].
% 0.74/1.05  25 next(e_0,e_1) # label(e_0_then_e_1) # label(axiom).  [assumption].
% 0.74/1.05  28 next(e_3,e_4) # label(e_3_then_e_4) # label(axiom).  [assumption].
% 0.74/1.05  29 greater(e_1,e_0) # label(e_1_greater_e_0) # label(axiom).  [assumption].
% 0.74/1.05  30 greater(e_2,e_0) # label(e_2_greater_e_0) # label(axiom).  [assumption].
% 0.74/1.05  31 greater(e_3,e_0) # label(e_3_greater_e_0) # label(axiom).  [assumption].
% 0.74/1.05  38 greater(e_4,e_3) # label(e_4_greater_e_3) # label(axiom).  [assumption].
% 0.74/1.05  39 cycle(e_4,e_0) # label(cycle3) # label(axiom).  [assumption].
% 0.74/1.05  40 product(A,A,A) # label(product_idempotence) # label(axiom).  [assumption].
% 0.74/1.05  41 -cycle(A,e_0) | -product(A,e_1,B) | -greater(B,A) # label(cycle6) # label(axiom).  [assumption].
% 0.74/1.05  43 -group_element(A) | cycle(A,e_0) | cycle(A,e_1) | cycle(A,e_2) | cycle(A,e_3) # label(cycle2) # label(axiom).  [assumption].
% 0.74/1.05  44 -group_element(A) | -group_element(B) | product(A,B,e_1) | product(A,B,e_2) | product(A,B,e_3) | product(A,B,e_4) # label(product_total_function1) # label(axiom).  [assumption].
% 0.74/1.05  57 -product(A,e_1,B) | -product(A,e_2,B).  [resolve(15,c,2,a)].
% 0.74/1.05  58 -product(A,e_1,B) | -product(A,e_3,B).  [resolve(15,c,3,a)].
% 0.74/1.05  59 -product(A,e_1,B) | -product(A,e_4,B).  [resolve(15,c,4,a)].
% 0.74/1.05  62 -product(A,e_3,B) | -product(A,e_4,B).  [resolve(15,c,10,a)].
% 0.74/1.05  63 -product(e_1,A,B) | -product(e_2,A,B).  [resolve(16,c,2,a)].
% 0.74/1.05  64 -product(e_1,A,B) | -product(e_3,A,B).  [resolve(16,c,3,a)].
% 0.74/1.05  65 -product(e_1,A,B) | -product(e_4,A,B).  [resolve(16,c,4,a)].
% 0.74/1.05  66 -product(e_2,A,B) | -product(e_3,A,B).  [resolve(16,c,6,a)].
% 0.74/1.05  67 -product(e_2,A,B) | -product(e_4,A,B).  [resolve(16,c,7,a)].
% 0.74/1.05  68 -product(e_3,A,B) | -product(e_4,A,B).  [resolve(16,c,10,a)].
% 0.74/1.05  74 -cycle(A,B) | -product(A,e_1,e_2) | -greater(B,e_0) | -next(A,e_4).  [resolve(17,e,7,a)].
% 0.74/1.05  87 -cycle(A,e_2) | -cycle(B,C) | -next(A,B) | -greater(e_2,e_0) | -next(C,e_1).  [resolve(18,f,5,a)].
% 0.74/1.05  88 -cycle(A,e_2) | -cycle(B,C) | -next(A,B) | -next(C,e_1).  [copy(87),unit_del(d,30)].
% 0.74/1.05  93 -cycle(A,e_3) | -cycle(B,C) | -next(A,B) | -greater(e_3,e_0) | -next(C,e_1).  [resolve(18,f,8,a)].
% 0.74/1.05  94 -cycle(A,e_3) | -cycle(B,C) | -next(A,B) | -next(C,e_1).  [copy(93),unit_del(d,31)].
% 0.74/1.05  112 -product(A,e_1,B) | -product(C,e_3,B) | -product(D,A,e_1) | -product(D,C,e_3).  [resolve(20,e,3,a)].
% 0.74/1.05  113 -product(A,e_1,B) | -product(C,e_4,B) | -product(D,A,e_1) | -product(D,C,e_4).  [resolve(20,e,4,a)].
% 0.74/1.05  174 -product(A,e_1,e_3) | -product(e_3,A,e_1).  [factor(112,b,d),unit_del(b,40)].
% 0.74/1.05  178 -product(A,e_1,e_4) | -product(e_4,A,e_1).  [factor(113,b,d),unit_del(b,40)].
% 0.74/1.05  213 cycle(e_3,e_0) | cycle(e_3,e_1) | cycle(e_3,e_2) | cycle(e_3,e_3).  [resolve(43,a,23,a)].
% 0.74/1.05  216 -group_element(A) | product(e_4,A,e_1) | product(e_4,A,e_2) | product(e_4,A,e_3) | product(e_4,A,e_4).  [resolve(44,a,24,a)].
% 0.74/1.05  217 -group_element(A) | product(e_3,A,e_1) | product(e_3,A,e_2) | product(e_3,A,e_3) | product(e_3,A,e_4).  [resolve(44,a,23,a)].
% 0.74/1.05  218 -group_element(A) | product(e_2,A,e_1) | product(e_2,A,e_2) | product(e_2,A,e_3) | product(e_2,A,e_4).  [resolve(44,a,22,a)].
% 0.74/1.05  236 -product(e_2,e_1,e_2).  [resolve(57,b,40,a)].
% 0.74/1.05  238 -product(e_3,e_1,e_3).  [resolve(58,b,40,a)].
% 0.74/1.05  240 -product(e_4,e_1,e_4).  [resolve(59,b,40,a)].
% 0.74/1.05  246 -product(e_4,e_3,e_4).  [resolve(62,b,40,a)].
% 0.74/1.05  247 -product(e_3,e_4,e_3).  [ur(62,a,40,a)].
% 0.74/1.05  249 -product(e_2,e_1,e_1).  [ur(63,a,40,a)].
% 0.74/1.05  251 -product(e_3,e_1,e_1).  [ur(64,a,40,a)].
% 0.74/1.05  253 -product(e_4,e_1,e_1).  [ur(65,a,40,a)].
% 0.74/1.05  258 -product(e_3,e_4,e_4).  [resolve(68,b,40,a)].
% 0.74/1.05  259 -product(e_4,e_3,e_3).  [ur(68,a,40,a)].
% 0.74/1.05  286 -cycle(e_3,e_2).  [ur(88,b,39,a,c,28,a,d,25,a)].
% 0.74/1.05  287 cycle(e_3,e_0) | cycle(e_3,e_1) | cycle(e_3,e_3).  [back_unit_del(213),unit_del(c,286)].
% 0.74/1.05  298 -cycle(e_3,e_3).  [ur(94,b,39,a,c,28,a,d,25,a)].
% 0.74/1.05  299 cycle(e_3,e_0) | cycle(e_3,e_1).  [back_unit_del(287),unit_del(c,298)].
% 0.74/1.05  393 product(e_4,e_3,e_1) | product(e_4,e_3,e_2).  [resolve(216,a,23,a),unit_del(c,259),unit_del(d,246)].
% 0.74/1.05  395 product(e_4,e_1,e_2) | product(e_4,e_1,e_3).  [resolve(216,a,21,a),unit_del(a,253),unit_del(d,240)].
% 0.74/1.05  411 product(e_4,e_3,e_1) | -product(e_4,e_1,e_2).  [resolve(393,b,58,b)].
% 0.74/1.05  429 product(e_4,e_1,e_2) | -product(e_3,e_4,e_1).  [resolve(395,b,174,a)].
% 0.74/1.05  445 product(e_4,e_1,e_2) | -product(e_2,e_1,e_3).  [resolve(395,b,67,b)].
% 0.74/1.05  464 product(e_3,e_4,e_1) | product(e_3,e_4,e_2).  [resolve(217,a,24,a),unit_del(c,247),unit_del(d,258)].
% 0.74/1.05  466 product(e_3,e_1,e_2) | product(e_3,e_1,e_4).  [resolve(217,a,21,a),unit_del(a,251),unit_del(c,238)].
% 0.74/1.05  484 product(e_3,e_4,e_1) | -product(e_3,e_1,e_2).  [resolve(464,b,59,b)].
% 0.74/1.05  504 product(e_3,e_1,e_2) | -product(e_4,e_3,e_1).  [resolve(466,b,178,a)].
% 0.74/1.05  520 product(e_3,e_1,e_2) | -product(e_2,e_1,e_4).  [resolve(466,b,66,b)].
% 0.74/1.05  521 product(e_3,e_1,e_2) | -cycle(e_3,e_0).  [resolve(466,b,41,b),unit_del(c,38)].
% 0.74/1.05  522 product(e_3,e_1,e_2) | cycle(e_3,e_1).  [resolve(521,b,299,a)].
% 0.74/1.05  525 product(e_2,e_1,e_3) | product(e_2,e_1,e_4).  [resolve(218,a,21,a),unit_del(a,249),unit_del(b,236)].
% 0.74/1.05  559 product(e_3,e_4,e_1) | cycle(e_3,e_1).  [resolve(484,b,522,a)].
% 0.74/1.05  561 cycle(e_3,e_1) | product(e_4,e_1,e_2).  [resolve(559,a,429,b)].
% 0.74/1.05  595 cycle(e_3,e_1) | -product(e_3,e_1,e_2).  [resolve(561,b,68,b)].
% 0.74/1.05  615 cycle(e_3,e_1).  [resolve(595,b,522,a),merge(b)].
% 0.74/1.05  641 -product(e_3,e_1,e_2).  [ur(74,a,615,a,c,29,a,d,28,a)].
% 0.74/1.05  651 -product(e_2,e_1,e_4).  [back_unit_del(520),unit_del(a,641)].
% 0.74/1.05  666 -product(e_4,e_3,e_1).  [back_unit_del(504),unit_del(a,641)].
% 0.74/1.05  669 product(e_2,e_1,e_3).  [back_unit_del(525),unit_del(b,651)].
% 0.74/1.05  673 -product(e_4,e_1,e_2).  [back_unit_del(411),unit_del(a,666)].
% 0.74/1.05  691 $F.  [back_unit_del(445),unit_del(a,673),unit_del(b,669)].
% 0.74/1.05  
% 0.74/1.05  % SZS output end Refutation
% 0.74/1.05  ============================== end of proof ==========================
% 0.74/1.05  
% 0.74/1.05  ============================== STATISTICS ============================
% 0.74/1.05  
% 0.74/1.05  Given=269. Generated=1000. Kept=658. proofs=1.
% 0.74/1.05  Usable=216. Sos=195. Demods=0. Limbo=22, Disabled=329. Hints=0.
% 0.74/1.05  Megabytes=0.41.
% 0.74/1.05  User_CPU=0.06, System_CPU=0.00, Wall_clock=0.
% 0.74/1.05  
% 0.74/1.05  ============================== end of statistics =====================
% 0.74/1.05  
% 0.74/1.05  ============================== end of search =========================
% 0.74/1.05  
% 0.74/1.05  THEOREM PROVED
% 0.74/1.05  % SZS status Unsatisfiable
% 0.74/1.05  
% 0.74/1.05  Exiting with 1 proof.
% 0.74/1.05  
% 0.74/1.05  Process 16785 exit (max_proofs) Mon Jun 13 09:40:44 2022
% 0.74/1.05  Prover9 interrupted
%------------------------------------------------------------------------------