TSTP Solution File: GRP754-1 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : GRP754-1 : TPTP v8.1.0. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n025.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 11:20:55 EDT 2022

% Result   : Unsatisfiable 3.16s 3.47s
% Output   : Refutation 3.16s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : GRP754-1 : TPTP v8.1.0. Released v4.0.0.
% 0.00/0.12  % Command  : tptp2X_and_run_prover9 %d %s
% 0.12/0.34  % Computer : n025.cluster.edu
% 0.12/0.34  % Model    : x86_64 x86_64
% 0.12/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34  % Memory   : 8042.1875MB
% 0.12/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34  % CPULimit : 300
% 0.12/0.34  % WCLimit  : 600
% 0.12/0.34  % DateTime : Tue Jun 14 09:43:54 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 3.16/3.47  ============================== Prover9 ===============================
% 3.16/3.47  Prover9 (32) version 2009-11A, November 2009.
% 3.16/3.47  Process 10080 was started by sandbox on n025.cluster.edu,
% 3.16/3.47  Tue Jun 14 09:43:55 2022
% 3.16/3.47  The command was "/export/starexec/sandbox/solver/bin/prover9 -t 300 -f /tmp/Prover9_9926_n025.cluster.edu".
% 3.16/3.47  ============================== end of head ===========================
% 3.16/3.47  
% 3.16/3.47  ============================== INPUT =================================
% 3.16/3.47  
% 3.16/3.47  % Reading from file /tmp/Prover9_9926_n025.cluster.edu
% 3.16/3.47  
% 3.16/3.47  set(prolog_style_variables).
% 3.16/3.47  set(auto2).
% 3.16/3.47      % set(auto2) -> set(auto).
% 3.16/3.47      % set(auto) -> set(auto_inference).
% 3.16/3.47      % set(auto) -> set(auto_setup).
% 3.16/3.47      % set(auto_setup) -> set(predicate_elim).
% 3.16/3.47      % set(auto_setup) -> assign(eq_defs, unfold).
% 3.16/3.47      % set(auto) -> set(auto_limits).
% 3.16/3.47      % set(auto_limits) -> assign(max_weight, "100.000").
% 3.16/3.47      % set(auto_limits) -> assign(sos_limit, 20000).
% 3.16/3.47      % set(auto) -> set(auto_denials).
% 3.16/3.47      % set(auto) -> set(auto_process).
% 3.16/3.47      % set(auto2) -> assign(new_constants, 1).
% 3.16/3.47      % set(auto2) -> assign(fold_denial_max, 3).
% 3.16/3.47      % set(auto2) -> assign(max_weight, "200.000").
% 3.16/3.47      % set(auto2) -> assign(max_hours, 1).
% 3.16/3.47      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 3.16/3.47      % set(auto2) -> assign(max_seconds, 0).
% 3.16/3.47      % set(auto2) -> assign(max_minutes, 5).
% 3.16/3.47      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 3.16/3.47      % set(auto2) -> set(sort_initial_sos).
% 3.16/3.47      % set(auto2) -> assign(sos_limit, -1).
% 3.16/3.47      % set(auto2) -> assign(lrs_ticks, 3000).
% 3.16/3.47      % set(auto2) -> assign(max_megs, 400).
% 3.16/3.47      % set(auto2) -> assign(stats, some).
% 3.16/3.47      % set(auto2) -> clear(echo_input).
% 3.16/3.47      % set(auto2) -> set(quiet).
% 3.16/3.47      % set(auto2) -> clear(print_initial_clauses).
% 3.16/3.47      % set(auto2) -> clear(print_given).
% 3.16/3.47  assign(lrs_ticks,-1).
% 3.16/3.47  assign(sos_limit,10000).
% 3.16/3.47  assign(order,kbo).
% 3.16/3.47  set(lex_order_vars).
% 3.16/3.47  clear(print_given).
% 3.16/3.47  
% 3.16/3.47  % formulas(sos).  % not echoed (7 formulas)
% 3.16/3.47  
% 3.16/3.47  ============================== end of input ==========================
% 3.16/3.47  
% 3.16/3.47  % From the command line: assign(max_seconds, 300).
% 3.16/3.47  
% 3.16/3.47  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 3.16/3.47  
% 3.16/3.47  % Formulas that are not ordinary clauses:
% 3.16/3.47  
% 3.16/3.47  ============================== end of process non-clausal formulas ===
% 3.16/3.47  
% 3.16/3.47  ============================== PROCESS INITIAL CLAUSES ===============
% 3.16/3.47  
% 3.16/3.47  ============================== PREDICATE ELIMINATION =================
% 3.16/3.47  
% 3.16/3.47  ============================== end predicate elimination =============
% 3.16/3.47  
% 3.16/3.47  Auto_denials:
% 3.16/3.47    % copying label goals to answer in negative clause
% 3.16/3.47  
% 3.16/3.47  Term ordering decisions:
% 3.16/3.47  Function symbol KB weights:  a=1. b=1. c=1. mult=1. ld=1. rd=1.
% 3.16/3.47  
% 3.16/3.47  ============================== end of process initial clauses ========
% 3.16/3.47  
% 3.16/3.47  ============================== CLAUSES FOR SEARCH ====================
% 3.16/3.47  
% 3.16/3.47  ============================== end of clauses for search =============
% 3.16/3.47  
% 3.16/3.47  ============================== SEARCH ================================
% 3.16/3.47  
% 3.16/3.47  % Starting search at 0.01 seconds.
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=91.000, iters=3369
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=59.000, iters=3392
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=51.000, iters=3353
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=47.000, iters=3381
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=43.000, iters=3333
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=39.000, iters=3343
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=35.000, iters=3338
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=31.000, iters=3346
% 3.16/3.47  
% 3.16/3.47  Low Water (keep): wt=27.000, iters=3421
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=6410, wt=187.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=6382, wt=151.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=7407, wt=115.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=8289, wt=107.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=5366, wt=103.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=3612, wt=99.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=4629, wt=95.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=8264, wt=91.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=6023, wt=87.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=6682, wt=83.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=8277, wt=79.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=16270, wt=23.000
% 3.16/3.47  
% 3.16/3.47  Low Water (displace): id=16335, wt=19.000
% 3.16/3.47  
% 3.16/3.47  ============================== PROOF =================================
% 3.16/3.47  % SZS status Unsatisfiable
% 3.16/3.47  % SZS output start Refutation
% 3.16/3.47  
% 3.16/3.47  % Proof 1 at 2.45 (+ 0.04) seconds: goals.
% 3.16/3.47  % Length of proof is 91.
% 3.16/3.47  % Level of proof is 14.
% 3.16/3.47  % Maximum clause weight is 27.000.
% 3.16/3.47  % Given clauses 275.
% 3.16/3.47  
% 3.16/3.47  1 mult(A,ld(A,B)) = B # label(f01) # label(axiom).  [assumption].
% 3.16/3.47  2 ld(A,mult(A,B)) = B # label(f02) # label(axiom).  [assumption].
% 3.16/3.47  3 mult(rd(A,B),B) = A # label(f03) # label(axiom).  [assumption].
% 3.16/3.47  4 rd(mult(A,B),B) = A # label(f04) # label(axiom).  [assumption].
% 3.16/3.47  5 mult(A,mult(B,C)) = mult(mult(rd(A,A),B),mult(A,C)) # label(f05) # label(axiom).  [assumption].
% 3.16/3.47  6 mult(mult(rd(A,A),B),mult(A,C)) = mult(A,mult(B,C)).  [copy(5),flip(a)].
% 3.16/3.47  7 mult(mult(A,B),C) = mult(mult(A,C),mult(B,ld(C,C))) # label(f06) # label(axiom).  [assumption].
% 3.16/3.47  8 mult(mult(A,B),mult(C,ld(B,B))) = mult(mult(A,C),B).  [copy(7),flip(a)].
% 3.16/3.47  9 mult(mult(a,a),mult(b,c)) != mult(mult(a,b),mult(a,c)) # label(goals) # label(negated_conjecture) # answer(goals).  [assumption].
% 3.16/3.47  10 mult(mult(a,b),mult(a,c)) != mult(mult(a,a),mult(b,c)) # answer(goals).  [copy(9),flip(a)].
% 3.16/3.47  11 ld(rd(A,B),A) = B.  [para(3(a,1),2(a,1,2))].
% 3.16/3.47  12 rd(A,ld(B,A)) = B.  [para(1(a,1),4(a,1,1))].
% 3.16/3.47  13 mult(A,mult(ld(rd(A,A),B),C)) = mult(B,mult(A,C)).  [para(1(a,1),6(a,1,1)),flip(a)].
% 3.16/3.47  14 mult(mult(rd(A,A),B),C) = mult(A,mult(B,ld(A,C))).  [para(1(a,1),6(a,1,2))].
% 3.16/3.47  15 ld(mult(rd(A,A),B),mult(A,mult(B,C))) = mult(A,C).  [para(6(a,1),2(a,1,2))].
% 3.16/3.47  16 rd(mult(A,mult(B,C)),mult(A,C)) = mult(rd(A,A),B).  [para(6(a,1),4(a,1,1))].
% 3.16/3.47  18 ld(mult(A,B),mult(mult(A,C),B)) = mult(C,ld(B,B)).  [para(8(a,1),2(a,1,2))].
% 3.16/3.47  19 mult(mult(rd(A,B),C),B) = mult(A,mult(C,ld(B,B))).  [para(3(a,1),8(a,1,1)),flip(a)].
% 3.16/3.47  20 mult(mult(A,rd(B,ld(C,C))),C) = mult(mult(A,C),B).  [para(3(a,1),8(a,1,2)),flip(a)].
% 3.16/3.47  21 rd(mult(mult(A,B),C),mult(B,ld(C,C))) = mult(A,C).  [para(8(a,1),4(a,1,1))].
% 3.16/3.47  24 ld(A,mult(B,mult(A,C))) = mult(ld(rd(A,A),B),C).  [para(13(a,1),2(a,1,2))].
% 3.16/3.47  30 rd(mult(A,mult(B,ld(A,C))),C) = mult(rd(A,A),B).  [para(14(a,1),4(a,1,1))].
% 3.16/3.47  31 mult(mult(A,mult(B,ld(A,C))),mult(D,ld(C,C))) = mult(mult(A,mult(B,ld(A,D))),C).  [para(14(a,1),8(a,1,1)),rewrite([14(9)])].
% 3.16/3.47  33 mult(A,mult(B,ld(A,mult(C,ld(B,B))))) = mult(A,mult(C,ld(A,B))).  [para(14(a,1),8(a,1)),rewrite([14(8)])].
% 3.16/3.47  36 ld(mult(rd(A,A),B),mult(A,C)) = mult(A,ld(B,C)).  [para(1(a,1),15(a,1,2,2))].
% 3.16/3.47  42 rd(mult(A,B),mult(A,C)) = mult(rd(A,A),rd(B,C)).  [para(3(a,1),16(a,1,1,2))].
% 3.16/3.47  45 rd(mult(mult(A,B),C),mult(mult(A,C),ld(C,C))) = mult(A,mult(rd(C,C),ld(A,B))).  [para(8(a,1),16(a,1,1)),rewrite([42(9),14(10)])].
% 3.16/3.47  54 ld(mult(A,B),mult(C,B)) = mult(ld(A,C),ld(B,B)).  [para(1(a,1),18(a,1,2,1))].
% 3.16/3.47  62 mult(A,ld(B,mult(C,ld(A,B)))) = mult(C,ld(B,B)).  [para(14(a,1),18(a,1,2)),rewrite([36(6)])].
% 3.16/3.47  67 rd(mult(A,mult(B,ld(C,C))),C) = mult(rd(A,C),B).  [para(19(a,1),4(a,1,1))].
% 3.16/3.47  75 mult(mult(rd(A,rd(B,ld(C,C))),C),B) = mult(A,C).  [para(3(a,1),20(a,1,1)),flip(a)].
% 3.16/3.47  87 rd(mult(A,B),mult(C,ld(B,B))) = mult(rd(A,C),B).  [para(3(a,1),21(a,1,1,1))].
% 3.16/3.47  93 mult(A,mult(rd(B,C),ld(A,C))) = mult(A,mult(rd(C,C),ld(A,B))).  [back_rewrite(45),rewrite([87(6),42(3),14(4)])].
% 3.16/3.47  108 mult(ld(rd(A,A),B),ld(A,C)) = ld(A,mult(B,C)).  [para(1(a,1),24(a,1,2,2)),flip(a)].
% 3.16/3.47  110 mult(ld(rd(A,A),rd(B,mult(A,C))),C) = ld(A,B).  [para(3(a,1),24(a,1,2)),flip(a)].
% 3.16/3.47  143 mult(rd(A,A),rd(B,ld(A,C))) = rd(mult(A,B),C).  [para(3(a,1),30(a,1,1,2)),flip(a)].
% 3.16/3.47  148 ld(mult(rd(A,A),B),C) = mult(A,ld(B,ld(A,C))).  [para(1(a,1),36(a,1,2))].
% 3.16/3.47  190 mult(ld(rd(A,B),C),ld(B,B)) = ld(A,mult(C,B)).  [para(3(a,1),54(a,1,1)),flip(a)].
% 3.16/3.47  208 mult(mult(A,mult(B,C)),mult(D,mult(ld(A,A),ld(C,C)))) = mult(mult(A,mult(B,ld(A,D))),mult(A,C)).  [para(2(a,1),31(a,1,1,2,2)),rewrite([54(5)])].
% 3.16/3.47  235 ld(A,mult(B,ld(C,C))) = ld(C,mult(B,ld(A,C))).  [para(62(a,1),2(a,1,2))].
% 3.16/3.47  237 mult(rd(A,ld(B,C)),ld(C,C)) = mult(B,ld(C,A)).  [para(3(a,1),62(a,1,2,2)),flip(a)].
% 3.16/3.47  240 mult(rd(A,B),ld(A,mult(C,B))) = mult(C,ld(A,A)).  [para(11(a,1),62(a,1,2,2,2))].
% 3.16/3.47  272 mult(rd(A,B),ld(rd(A,A),C)) = mult(rd(C,B),A).  [para(13(a,1),67(a,1,1)),rewrite([67(4)]),flip(a)].
% 3.16/3.47  333 mult(rd(A,rd(B,ld(C,C))),C) = rd(mult(A,C),B).  [para(75(a,1),4(a,1,1)),flip(a)].
% 3.16/3.47  362 rd(A,mult(B,ld(C,C))) = mult(rd(rd(A,C),B),C).  [para(3(a,1),87(a,1,1))].
% 3.16/3.47  424 mult(A,ld(B,mult(C,ld(A,A)))) = mult(C,ld(B,A)).  [para(33(a,1),2(a,1,2)),rewrite([2(4)]),flip(a)].
% 3.16/3.47  476 ld(rd(A,A),rd(B,mult(A,C))) = rd(ld(A,B),C).  [para(110(a,1),4(a,1,1)),flip(a)].
% 3.16/3.47  483 ld(rd(A,A),rd(mult(A,B),C)) = rd(B,ld(A,C)).  [para(143(a,1),2(a,1,2))].
% 3.16/3.47  498 rd(A,mult(B,ld(C,ld(B,A)))) = mult(rd(B,B),C).  [para(148(a,1),12(a,1,2))].
% 3.16/3.47  565 ld(ld(rd(A,B),C),ld(A,mult(C,B))) = ld(B,B).  [para(190(a,1),2(a,1,2))].
% 3.16/3.47  566 rd(ld(A,mult(B,C)),ld(C,C)) = ld(rd(A,C),B).  [para(190(a,1),4(a,1,1))].
% 3.16/3.47  625 ld(rd(A,B),mult(C,ld(A,A))) = ld(A,mult(C,B)).  [para(11(a,1),235(a,2,2,2))].
% 3.16/3.47  710 rd(mult(A,ld(B,C)),ld(B,B)) = rd(C,ld(A,B)).  [para(237(a,1),4(a,1,1))].
% 3.16/3.47  712 mult(mult(A,rd(B,ld(C,D))),D) = mult(mult(A,D),mult(C,ld(D,B))).  [para(237(a,1),8(a,1,2)),flip(a)].
% 3.16/3.47  713 mult(rd(A,B),ld(C,C)) = mult(rd(C,B),ld(C,A)).  [para(11(a,1),237(a,1,1,2))].
% 3.16/3.47  730 rd(mult(A,mult(B,ld(C,D))),C) = mult(rd(A,C),rd(D,ld(B,C))).  [para(237(a,1),67(a,1,1,2))].
% 3.16/3.47  888 mult(rd(mult(rd(A,A),B),C),A) = mult(rd(A,C),B).  [para(2(a,1),272(a,1,2)),flip(a)].
% 3.16/3.47  894 mult(rd(A,ld(B,C)),C) = mult(B,ld(rd(C,C),A)).  [para(12(a,1),272(a,1,1)),flip(a)].
% 3.16/3.47  1145 mult(rd(A,ld(B,C)),ld(D,C)) = mult(C,ld(D,mult(B,ld(C,A)))).  [para(237(a,1),424(a,1,2,2)),flip(a)].
% 3.16/3.47  1335 ld(A,mult(rd(mult(A,B),C),D)) = mult(rd(B,ld(A,C)),ld(A,D)).  [para(483(a,1),108(a,1,1)),flip(a)].
% 3.16/3.47  1514 mult(rd(A,A),ld(rd(A,B),C)) = mult(rd(C,A),B).  [para(565(a,1),498(a,1,2,2)),rewrite([362(4),4(2)]),flip(a)].
% 3.16/3.47  1539 rd(mult(A,B),ld(C,mult(D,B))) = mult(rd(A,ld(rd(C,B),D)),B).  [para(566(a,1),333(a,1,1,2)),flip(a)].
% 3.16/3.47  1542 ld(rd(A,A),mult(rd(B,A),C)) = ld(rd(A,C),B).  [para(566(a,1),476(a,2)),rewrite([362(5),4(3)])].
% 3.16/3.47  1669 ld(A,mult(rd(B,ld(A,A)),C)) = ld(rd(A,C),B).  [para(3(a,1),625(a,1,2)),flip(a)].
% 3.16/3.47  1815 rd(mult(A,ld(B,B)),ld(B,C)) = rd(B,ld(A,C)).  [para(424(a,1),710(a,1,1)),rewrite([710(4)]),flip(a)].
% 3.16/3.47  1886 mult(rd(mult(A,B),C),ld(A,A)) = mult(rd(A,C),B).  [para(2(a,1),713(a,2,2))].
% 3.16/3.47  2271 ld(rd(mult(rd(A,A),B),C),mult(rd(A,C),B)) = A.  [para(888(a,1),2(a,1,2))].
% 3.16/3.47  2272 rd(mult(rd(A,B),C),A) = rd(mult(rd(A,A),C),B).  [para(888(a,1),4(a,1,1))].
% 3.16/3.47  2275 mult(rd(A,ld(B,mult(rd(A,A),C))),C) = mult(B,A).  [para(12(a,1),888(a,1,1)),flip(a)].
% 3.16/3.47  2534 mult(rd(A,B),ld(C,B)) = mult(rd(B,B),ld(C,A)).  [para(93(a,1),2(a,1,2)),rewrite([2(5)]),flip(a)].
% 3.16/3.47  3316 mult(mult(rd(A,B),C),mult(B,D)) = mult(B,mult(ld(rd(B,C),A),D)).  [para(1542(a,1),13(a,1,2,1)),flip(a)].
% 3.16/3.47  3336 ld(rd(A,ld(rd(B,B),C)),B) = ld(rd(A,B),C).  [para(272(a,1),1542(a,1,2)),rewrite([1542(4)]),flip(a)].
% 3.16/3.47  3465 ld(rd(A,B),mult(C,ld(A,D))) = ld(A,mult(rd(D,ld(C,A)),B)).  [para(710(a,1),1669(a,1,2,1)),flip(a)].
% 3.16/3.47  4112 rd(mult(A,ld(B,B)),C) = rd(B,ld(A,mult(B,C))).  [para(2(a,1),1815(a,1,2))].
% 3.16/3.47  4113 rd(A,ld(rd(B,ld(A,A)),C)) = rd(B,ld(A,C)).  [para(3(a,1),1815(a,1,1)),flip(a)].
% 3.16/3.47  4126 mult(rd(A,ld(rd(B,ld(C,C)),D)),ld(C,C)) = rd(C,ld(A,mult(D,ld(B,C)))).  [para(235(a,2),1815(a,1,2)),rewrite([1539(6)])].
% 3.16/3.47  4435 mult(mult(A,B),mult(ld(A,A),ld(C,C))) = mult(A,mult(B,ld(C,C))).  [para(1886(a,1),19(a,1,1)),rewrite([19(3)]),flip(a)].
% 3.16/3.47  4993 ld(A,mult(rd(mult(B,A),C),ld(B,mult(A,C)))) = A.  [para(240(a,1),2271(a,1,1,1)),rewrite([4112(3),3465(8),11(3)])].
% 3.16/3.47  5160 mult(rd(A,ld(rd(B,B),C)),ld(rd(B,B),D)) = ld(rd(B,D),mult(rd(B,C),A)).  [para(2272(a,1),1542(a,1,2,1)),rewrite([1335(6)])].
% 3.16/3.47  5234 rd(A,ld(B,mult(rd(A,A),C))) = rd(mult(B,A),C).  [para(2275(a,1),4(a,1,1)),flip(a)].
% 3.16/3.47  6065 mult(rd(A,A),ld(B,mult(C,A))) = mult(C,ld(B,A)).  [para(4(a,1),2534(a,1,1)),flip(a)].
% 3.16/3.47  6730 ld(rd(A,B),mult(rd(A,C),D)) = mult(rd(B,ld(rd(D,A),C)),A).  [para(3336(a,1),894(a,1,1,2)),rewrite([5160(10)]),flip(a)].
% 3.16/3.47  7993 rd(A,ld(B,mult(C,ld(D,A)))) = mult(rd(D,ld(A,C)),ld(A,B)).  [para(4113(a,1),713(a,2,1)),rewrite([4126(6)])].
% 3.16/3.47  8400 mult(rd(mult(A,B),C),ld(A,mult(B,C))) = mult(B,B).  [para(4993(a,1),1(a,1,2)),flip(a)].
% 3.16/3.47  10097 mult(rd(A,ld(rd(B,C),D)),C) = mult(rd(B,ld(C,D)),ld(C,A)).  [para(6065(a,1),5234(a,1,2,2)),rewrite([7993(4),1539(8)]),flip(a)].
% 3.16/3.47  10189 ld(rd(A,B),mult(rd(A,C),D)) = mult(rd(D,ld(A,C)),ld(A,B)).  [back_rewrite(6730),rewrite([10097(8)])].
% 3.16/3.47  11024 mult(A,ld(B,mult(C,ld(A,mult(B,C))))) = mult(C,C).  [para(1(a,1),8400(a,1,2,2)),rewrite([1145(5)])].
% 3.16/3.47  13967 mult(A,mult(ld(rd(A,B),C),ld(B,C))) = mult(C,C).  [para(11024(a,1),1514(a,1)),rewrite([10189(5),730(7),12(6),712(6),3316(6)]),flip(a)].
% 3.16/3.47  15988 mult(mult(A,mult(B,C)),mult(A,mult(D,ld(C,C)))) = mult(mult(A,mult(B,D)),mult(A,C)).  [para(2(a,1),208(a,2,1,2,2)),rewrite([4435(7)])].
% 3.16/3.47  16612 mult(mult(A,B),mult(A,C)) = mult(mult(A,A),mult(B,C)).  [para(13967(a,1),208(a,2,1)),rewrite([13(4),15988(7),1(2)])].
% 3.16/3.47  16613 $F # answer(goals).  [resolve(16612,a,10,a)].
% 3.16/3.47  
% 3.16/3.47  % SZS output end Refutation
% 3.16/3.47  ============================== end of proof ==========================
% 3.16/3.47  
% 3.16/3.47  ============================== STATISTICS ============================
% 3.16/3.47  
% 3.16/3.47  Given=275. Generated=65863. Kept=16609. proofs=1.
% 3.16/3.47  Usable=189. Sos=9999. Demods=9368. Limbo=84, Disabled=6343. Hints=0.
% 3.16/3.47  Megabytes=22.69.
% 3.16/3.47  User_CPU=2.45, System_CPU=0.04, Wall_clock=2.
% 3.16/3.47  
% 3.16/3.47  ============================== end of statistics =====================
% 3.16/3.47  
% 3.16/3.47  ============================== end of search =========================
% 3.16/3.47  
% 3.16/3.47  THEOREM PROVED
% 3.16/3.47  % SZS status Unsatisfiable
% 3.16/3.47  
% 3.16/3.47  Exiting with 1 proof.
% 3.16/3.47  
% 3.16/3.47  Process 10080 exit (max_proofs) Tue Jun 14 09:43:57 2022
% 3.16/3.47  Prover9 interrupted
%------------------------------------------------------------------------------