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SPASS---3.9.UNS-Ref.s

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%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : GRP234-1 : TPTP v8.1.0. Released v2.5.0.
% Transfm  : none
% Format   : tptp
% Command  : run_spass %d %s

% Computer : n007.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 11:46:27 EDT 2022

% Result   : Unsatisfiable 0.21s 0.46s
% Output   : Refutation 0.21s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.13  % Problem  : GRP234-1 : TPTP v8.1.0. Released v2.5.0.
% 0.11/0.13  % Command  : run_spass %d %s
% 0.13/0.35  % Computer : n007.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 23:03:54 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 0.21/0.46  
% 0.21/0.46  SPASS V 3.9 
% 0.21/0.46  SPASS beiseite: Proof found.
% 0.21/0.46  % SZS status Theorem
% 0.21/0.46  Problem: /export/starexec/sandbox/benchmark/theBenchmark.p 
% 0.21/0.46  SPASS derived 570 clauses, backtracked 174 clauses, performed 8 splits and kept 423 clauses.
% 0.21/0.46  SPASS allocated 63462 KBytes.
% 0.21/0.46  SPASS spent	0:00:00.10 on the problem.
% 0.21/0.46  		0:00:00.03 for the input.
% 0.21/0.46  		0:00:00.00 for the FLOTTER CNF translation.
% 0.21/0.46  		0:00:00.00 for inferences.
% 0.21/0.46  		0:00:00.00 for the backtracking.
% 0.21/0.46  		0:00:00.04 for the reduction.
% 0.21/0.46  
% 0.21/0.46  
% 0.21/0.46  Here is a proof with depth 5, length 277 :
% 0.21/0.46  % SZS output start Refutation
% 0.21/0.46  1[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7)** equal(inverse(sk_c7),sk_c6).
% 0.21/0.46  2[0:Inp] ||  -> equal(inverse(sk_c7),sk_c6) equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  3[0:Inp] ||  -> equal(inverse(sk_c7),sk_c6) equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  4[0:Inp] ||  -> equal(inverse(sk_c7),sk_c6) equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  5[0:Inp] ||  -> equal(inverse(sk_c4),sk_c7)** equal(inverse(sk_c7),sk_c6).
% 0.21/0.46  6[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.21/0.46  7[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7) equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.21/0.46  8[0:Inp] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6) equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.21/0.46  9[0:Inp] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5) equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.21/0.46  10[0:Inp] ||  -> equal(inverse(sk_c4),sk_c7) equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.21/0.46  11[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  12[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7) equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  13[0:Inp] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6) equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  14[0:Inp] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5) equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  15[0:Inp] ||  -> equal(inverse(sk_c4),sk_c7) equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  16[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(inverse(sk_c2),sk_c7)**.
% 0.21/0.46  17[0:Inp] ||  -> equal(inverse(sk_c2),sk_c7) equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  18[0:Inp] ||  -> equal(inverse(sk_c2),sk_c7) equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  19[0:Inp] ||  -> equal(inverse(sk_c2),sk_c7) equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  20[0:Inp] ||  -> equal(inverse(sk_c4),sk_c7) equal(inverse(sk_c2),sk_c7)**.
% 0.21/0.46  21[0:Inp] || equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c7),sk_c6)** equal(multiply(v,sk_c7),sk_c6)** equal(inverse(v),sk_c7) equal(inverse(w),sk_c7) equal(multiply(w,sk_c6),sk_c7)** equal(multiply(sk_c7,x),sk_c6)** equal(multiply(y,sk_c7),x)* equal(inverse(y),sk_c7) -> .
% 0.21/0.46  22[0:Inp] ||  -> equal(multiply(identity,u),u)**.
% 0.21/0.46  23[0:Inp] ||  -> equal(multiply(inverse(u),u),identity)**.
% 0.21/0.46  24[0:Inp] ||  -> equal(multiply(multiply(u,v),w),multiply(u,multiply(v,w)))**.
% 0.21/0.46  25[0:Con:21.1] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(inverse(w),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c7),x)*+ equal(multiply(v,sk_c6),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(multiply(sk_c7,x),sk_c6)** -> .
% 0.21/0.46  26[1:Spt:25.2,25.6] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c6)** -> .
% 0.21/0.46  27[2:Spt:5.1] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.21/0.46  29[3:Spt:20.1] ||  -> equal(inverse(sk_c2),sk_c7)**.
% 0.21/0.46  33[4:Spt:15.1] ||  -> equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  35[4:SpL:33.0,26.1] || equal(inverse(sk_c2),sk_c7)** equal(sk_c6,sk_c6) -> .
% 0.21/0.46  36[4:Obv:35.1] || equal(inverse(sk_c2),sk_c7)** -> .
% 0.21/0.46  37[4:Rew:29.0,36.0] || equal(sk_c7,sk_c7)* -> .
% 0.21/0.46  38[4:Obv:37.0] ||  -> .
% 0.21/0.46  39[4:Spt:38.0,15.1,33.0] || equal(multiply(sk_c2,sk_c7),sk_c6)** -> .
% 0.21/0.46  40[4:Spt:38.0,15.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.46  41[4:MRR:11.1,39.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.46  42[4:MRR:14.1,39.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  43[4:MRR:13.1,39.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  44[4:MRR:12.1,39.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  48[4:SpL:42.0,26.1] || equal(inverse(sk_c4),sk_c7)** equal(sk_c6,sk_c5) -> .
% 0.21/0.46  49[4:Rew:40.0,48.0] || equal(sk_c7,sk_c7) equal(sk_c6,sk_c5)** -> .
% 0.21/0.46  50[4:Obv:49.0] || equal(sk_c6,sk_c5)** -> .
% 0.21/0.46  54[2:SpR:27.0,23.0] ||  -> equal(multiply(sk_c6,sk_c7),identity)**.
% 0.21/0.46  55[3:SpR:29.0,23.0] ||  -> equal(multiply(sk_c7,sk_c2),identity)**.
% 0.21/0.46  56[4:SpR:40.0,23.0] ||  -> equal(multiply(sk_c7,sk_c4),identity)**.
% 0.21/0.46  57[4:SpR:41.0,23.0] ||  -> equal(multiply(sk_c7,sk_c3),identity)**.
% 0.21/0.46  65[2:SpR:54.0,24.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),multiply(identity,u))**.
% 0.21/0.46  67[0:SpR:23.0,24.0] ||  -> equal(multiply(inverse(u),multiply(u,v)),multiply(identity,v))**.
% 0.21/0.46  71[2:Rew:22.0,65.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.21/0.46  72[0:Rew:22.0,67.0] ||  -> equal(multiply(inverse(u),multiply(u,v)),v)**.
% 0.21/0.46  85[4:SpR:43.0,71.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.21/0.46  86[3:SpR:55.0,71.0] ||  -> equal(multiply(sk_c6,identity),sk_c2)**.
% 0.21/0.46  87[4:SpR:56.0,71.0] ||  -> equal(multiply(sk_c6,identity),sk_c4)**.
% 0.21/0.46  88[4:SpR:57.0,71.0] ||  -> equal(multiply(sk_c6,identity),sk_c3)**.
% 0.21/0.46  89[4:Rew:86.0,87.0] ||  -> equal(sk_c2,sk_c4)**.
% 0.21/0.46  94[4:Rew:89.0,86.0] ||  -> equal(multiply(sk_c6,identity),sk_c4)**.
% 0.21/0.46  95[4:Rew:88.0,94.0] ||  -> equal(sk_c4,sk_c3)**.
% 0.21/0.46  97[4:Rew:95.0,42.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c5)**.
% 0.21/0.46  112[4:SpR:88.0,24.0] ||  -> equal(multiply(sk_c6,multiply(identity,u)),multiply(sk_c3,u))**.
% 0.21/0.46  114[4:Rew:22.0,112.0] ||  -> equal(multiply(sk_c6,u),multiply(sk_c3,u))**.
% 0.21/0.46  116[4:Rew:114.0,85.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c5)**.
% 0.21/0.46  118[4:Rew:114.0,54.0] ||  -> equal(multiply(sk_c3,sk_c7),identity)**.
% 0.21/0.46  122[4:Rew:44.0,116.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.46  123[4:Rew:122.0,50.0] || equal(sk_c6,sk_c7)** -> .
% 0.21/0.46  125[4:Rew:122.0,97.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.21/0.46  127[4:Rew:118.0,125.0] ||  -> equal(identity,sk_c7)**.
% 0.21/0.46  128[4:Rew:127.0,22.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.21/0.46  130[4:Rew:127.0,57.0] ||  -> equal(multiply(sk_c7,sk_c3),sk_c7)**.
% 0.21/0.46  137[4:Rew:128.0,130.0] ||  -> equal(sk_c3,sk_c7)**.
% 0.21/0.46  139[4:Rew:137.0,44.0] ||  -> equal(multiply(sk_c7,sk_c6),sk_c7)**.
% 0.21/0.46  148[4:Rew:128.0,139.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.46  149[4:MRR:148.0,123.0] ||  -> .
% 0.21/0.46  156[3:Spt:149.0,20.1,29.0] || equal(inverse(sk_c2),sk_c7)** -> .
% 0.21/0.46  157[3:Spt:149.0,20.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.46  158[3:MRR:16.1,156.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.46  159[3:MRR:19.0,156.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  160[3:MRR:18.0,156.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  161[3:MRR:17.0,156.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  170[3:SpL:159.0,26.1] || equal(inverse(sk_c4),sk_c7)** equal(sk_c6,sk_c5) -> .
% 0.21/0.46  171[3:Rew:157.0,170.0] || equal(sk_c7,sk_c7) equal(sk_c6,sk_c5)** -> .
% 0.21/0.46  172[3:Obv:171.0] || equal(sk_c6,sk_c5)** -> .
% 0.21/0.46  175[3:SpR:161.0,24.0] ||  -> equal(multiply(sk_c3,multiply(sk_c6,u)),multiply(sk_c7,u))**.
% 0.21/0.46  183[3:SpR:157.0,23.0] ||  -> equal(multiply(sk_c7,sk_c4),identity)**.
% 0.21/0.46  184[3:SpR:158.0,23.0] ||  -> equal(multiply(sk_c7,sk_c3),identity)**.
% 0.21/0.46  196[3:SpR:160.0,71.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.21/0.46  197[3:SpR:183.0,71.0] ||  -> equal(multiply(sk_c6,identity),sk_c4)**.
% 0.21/0.46  198[3:SpR:184.0,71.0] ||  -> equal(multiply(sk_c6,identity),sk_c3)**.
% 0.21/0.46  199[3:Rew:197.0,198.0] ||  -> equal(sk_c4,sk_c3)**.
% 0.21/0.46  201[3:Rew:199.0,159.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c5)**.
% 0.21/0.46  205[3:Rew:199.0,197.0] ||  -> equal(multiply(sk_c6,identity),sk_c3)**.
% 0.21/0.46  214[0:SpR:72.0,72.0] ||  -> equal(multiply(inverse(inverse(u)),v),multiply(u,v))**.
% 0.21/0.46  217[3:SpR:201.0,72.0] ||  -> equal(multiply(inverse(sk_c3),sk_c5),sk_c7)**.
% 0.21/0.46  223[0:SpR:23.0,72.0] ||  -> equal(multiply(inverse(inverse(u)),identity),u)**.
% 0.21/0.46  226[2:SpR:27.0,72.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.21/0.46  228[3:Rew:160.0,217.0,158.0,217.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.46  231[3:Rew:228.0,54.0] ||  -> equal(multiply(sk_c7,sk_c7),identity)**.
% 0.21/0.46  232[3:Rew:228.0,172.0] || equal(sk_c5,sk_c7)** -> .
% 0.21/0.46  233[3:Rew:228.0,160.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  236[3:Rew:228.0,196.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.21/0.46  242[3:Rew:228.0,175.0] ||  -> equal(multiply(sk_c3,multiply(sk_c7,u)),multiply(sk_c7,u))**.
% 0.21/0.46  243[3:Rew:228.0,205.0] ||  -> equal(multiply(sk_c7,identity),sk_c3)**.
% 0.21/0.46  247[3:Rew:231.0,236.0] ||  -> equal(identity,sk_c5)**.
% 0.21/0.46  250[3:Rew:247.0,184.0] ||  -> equal(multiply(sk_c7,sk_c3),sk_c5)**.
% 0.21/0.46  252[3:Rew:233.0,243.0,247.0,243.0] ||  -> equal(sk_c3,sk_c7)**.
% 0.21/0.46  258[3:Rew:252.0,250.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.21/0.46  267[3:Rew:228.0,226.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),u)**.
% 0.21/0.46  276[3:Rew:267.0,242.0,252.0,242.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.21/0.46  278[3:Rew:276.0,258.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.46  279[3:MRR:278.0,232.0] ||  -> .
% 0.21/0.46  283[2:Spt:279.0,5.1,27.0] || equal(inverse(sk_c7),sk_c6)** -> .
% 0.21/0.46  284[2:Spt:279.0,5.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.46  285[0:Rew:214.0,223.0] ||  -> equal(multiply(u,identity),u)**.
% 0.21/0.46  286[2:MRR:1.1,283.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.46  287[2:MRR:4.0,283.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  288[2:MRR:3.0,283.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  289[2:MRR:2.0,283.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  295[2:SpR:287.0,72.0] ||  -> equal(multiply(inverse(sk_c4),sk_c5),sk_c7)**.
% 0.21/0.46  297[2:Rew:284.0,295.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  298[2:Rew:288.0,297.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.46  299[2:Rew:298.0,283.0] || equal(inverse(sk_c7),sk_c7)** -> .
% 0.21/0.46  301[2:Rew:298.0,288.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  302[2:Rew:298.0,289.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.21/0.46  309[2:SpR:301.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c5)**.
% 0.21/0.46  311[2:Rew:23.0,309.0] ||  -> equal(identity,sk_c5)**.
% 0.21/0.46  313[2:Rew:311.0,23.0] ||  -> equal(multiply(inverse(u),u),sk_c5)**.
% 0.21/0.46  316[2:Rew:311.0,285.0] ||  -> equal(multiply(u,sk_c5),u)**.
% 0.21/0.46  322[2:SpR:302.0,72.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c7)**.
% 0.21/0.46  324[2:Rew:286.0,322.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.21/0.46  329[2:SpR:324.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c7)**.
% 0.21/0.46  331[2:Rew:313.0,329.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.46  332[2:Rew:331.0,287.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c7)**.
% 0.21/0.46  337[2:Rew:331.0,316.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.21/0.46  345[2:Rew:337.0,332.0] ||  -> equal(sk_c4,sk_c7)**.
% 0.21/0.46  349[2:Rew:345.0,284.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.21/0.46  351[2:MRR:349.0,299.0] ||  -> .
% 0.21/0.46  357[1:Spt:351.0,25.0,25.1,25.3,25.4,25.5,25.7] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c7),w)*+ equal(multiply(v,sk_c6),sk_c7)** equal(multiply(sk_c7,w),sk_c6)** -> .
% 0.21/0.46  358[1:EqR:357.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(v,sk_c6),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c6)** -> .
% 0.21/0.46  360[2:Spt:1.1] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.21/0.46  363[2:Rew:360.0,358.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(sk_c6,sk_c6) equal(multiply(v,sk_c6),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c6)** -> .
% 0.21/0.46  364[2:Obv:363.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c6),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c6)** -> .
% 0.21/0.46  367[2:SpR:360.0,72.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.21/0.46  369[3:Spt:20.1] ||  -> equal(inverse(sk_c2),sk_c7)**.
% 0.21/0.46  370[3:SpR:369.0,72.0] ||  -> equal(multiply(sk_c7,multiply(sk_c2,u)),u)**.
% 0.21/0.46  372[4:Spt:10.1] ||  -> equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.21/0.46  382[5:Spt:11.1] ||  -> equal(multiply(sk_c2,sk_c7),sk_c6)**.
% 0.21/0.46  384[5:SpR:382.0,72.0] ||  -> equal(multiply(inverse(sk_c2),sk_c6),sk_c7)**.
% 0.21/0.46  386[5:Rew:369.0,384.0] ||  -> equal(multiply(sk_c7,sk_c6),sk_c7)**.
% 0.21/0.46  388[5:SpR:386.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c6)**.
% 0.21/0.46  390[5:Rew:360.0,388.0] ||  -> equal(multiply(sk_c6,sk_c7),sk_c6)**.
% 0.21/0.46  392[5:SpR:390.0,72.0] ||  -> equal(multiply(inverse(sk_c6),sk_c6),sk_c7)**.
% 0.21/0.46  394[5:Rew:23.0,392.0] ||  -> equal(identity,sk_c7)**.
% 0.21/0.46  395[5:Rew:394.0,285.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.21/0.46  396[5:Rew:394.0,22.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.21/0.46  399[5:Rew:395.0,382.0] ||  -> equal(sk_c6,sk_c2)**.
% 0.21/0.46  400[5:Rew:395.0,372.0] ||  -> equal(sk_c6,sk_c1)**.
% 0.21/0.46  402[5:Rew:395.0,364.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c6),sk_c7)** equal(multiply(sk_c7,u),sk_c6)** -> .
% 0.21/0.46  404[5:Rew:399.0,360.0] ||  -> equal(inverse(sk_c7),sk_c2)**.
% 0.21/0.46  405[5:Rew:399.0,386.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c7)**.
% 0.21/0.46  411[5:Rew:399.0,400.0] ||  -> equal(sk_c2,sk_c1)**.
% 0.21/0.46  414[5:Rew:411.0,399.0] ||  -> equal(sk_c6,sk_c1)**.
% 0.21/0.46  415[5:Rew:411.0,404.0] ||  -> equal(inverse(sk_c7),sk_c1)**.
% 0.21/0.46  416[5:Rew:396.0,405.0,411.0,405.0] ||  -> equal(sk_c1,sk_c7)**.
% 0.21/0.46  418[5:Rew:416.0,414.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.46  419[5:Rew:416.0,415.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.21/0.46  429[5:Rew:396.0,402.3,418.0,402.3,395.0,402.2,418.0,402.2] || equal(inverse(u),sk_c7)** equal(inverse(v),sk_c7)** equal(v,sk_c7) equal(u,sk_c7) -> .
% 0.21/0.46  430[5:Con:429.0] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.21/0.46  472[5:SpL:419.0,430.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.21/0.46  474[5:Obv:472.1] ||  -> .
% 0.21/0.46  475[5:Spt:474.0,11.1,382.0] || equal(multiply(sk_c2,sk_c7),sk_c6)** -> .
% 0.21/0.46  476[5:Spt:474.0,11.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.46  477[5:MRR:15.1,475.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.46  478[5:MRR:14.1,475.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  479[5:MRR:13.1,475.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  480[5:MRR:12.1,475.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  493[5:SpR:478.0,72.0] ||  -> equal(multiply(inverse(sk_c4),sk_c5),sk_c7)**.
% 0.21/0.46  495[5:Rew:477.0,493.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  496[5:Rew:479.0,495.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.46  497[5:Rew:496.0,360.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.21/0.46  500[5:Rew:496.0,475.0] || equal(multiply(sk_c2,sk_c7),sk_c7)** -> .
% 0.21/0.46  501[5:Rew:496.0,367.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),u)**.
% 0.21/0.46  503[5:Rew:496.0,479.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  504[5:Rew:496.0,480.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.21/0.46  517[5:SpR:503.0,24.0] ||  -> equal(multiply(sk_c7,multiply(sk_c5,u)),multiply(sk_c7,u))**.
% 0.21/0.46  518[5:SpR:503.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c5)**.
% 0.21/0.46  520[5:Rew:497.0,518.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.21/0.46  522[5:SpR:504.0,72.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c7)**.
% 0.21/0.46  524[5:Rew:476.0,522.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.21/0.46  525[5:Rew:520.0,524.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.46  529[5:Rew:525.0,517.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),multiply(sk_c7,u))**.
% 0.21/0.46  531[5:Rew:501.0,529.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.21/0.46  541[5:Rew:531.0,370.0] ||  -> equal(multiply(sk_c2,u),u)**.
% 0.21/0.46  542[5:UnC:541.0,500.0] ||  -> .
% 0.21/0.46  544[4:Spt:542.0,10.1,372.0] || equal(multiply(sk_c1,sk_c7),sk_c6)** -> .
% 0.21/0.46  545[4:Spt:542.0,10.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.46  546[4:MRR:6.1,544.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.46  547[4:MRR:9.1,544.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.46  548[4:MRR:8.1,544.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.46  549[4:MRR:7.1,544.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.46  557[4:SpR:547.0,72.0] ||  -> equal(multiply(inverse(sk_c4),sk_c5),sk_c7)**.
% 0.21/0.46  559[4:Rew:545.0,557.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  560[4:Rew:548.0,559.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.46  561[4:Rew:560.0,360.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.21/0.46  563[4:Rew:560.0,367.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),u)**.
% 0.21/0.46  564[4:Rew:560.0,548.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.46  565[4:Rew:560.0,549.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.21/0.46  567[4:Rew:560.0,364.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c7),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c6)** -> .
% 0.21/0.46  569[4:Rew:560.0,567.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c7),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c7)** -> .
% 0.21/0.46  573[4:SpR:564.0,24.0] ||  -> equal(multiply(sk_c7,multiply(sk_c5,u)),multiply(sk_c7,u))**.
% 0.21/0.46  574[4:SpR:564.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c5)**.
% 0.21/0.46  576[4:Rew:561.0,574.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.21/0.46  580[4:SpR:565.0,72.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c7)**.
% 0.21/0.46  582[4:Rew:546.0,580.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.21/0.46  583[4:Rew:576.0,582.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.46  587[4:Rew:583.0,573.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),multiply(sk_c7,u))**.
% 0.21/0.46  589[4:Rew:563.0,587.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.21/0.46  595[4:Rew:589.0,569.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c7),sk_c7)** equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.21/0.46  599[4:Con:595.0] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.21/0.46  613[4:SpR:589.0,285.0] ||  -> equal(identity,sk_c7)**.
% 0.21/0.46  615[4:Rew:613.0,285.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.21/0.47  620[4:Rew:615.0,599.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.21/0.47  657[4:SpL:561.0,620.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.21/0.47  658[4:Obv:657.1] ||  -> .
% 0.21/0.47  659[3:Spt:658.0,20.1,369.0] || equal(inverse(sk_c2),sk_c7)** -> .
% 0.21/0.47  660[3:Spt:658.0,20.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.47  661[3:MRR:16.1,659.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.47  662[3:MRR:19.0,659.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.47  663[3:MRR:18.0,659.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.47  664[3:MRR:17.0,659.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.47  672[3:SpR:662.0,72.0] ||  -> equal(multiply(inverse(sk_c4),sk_c5),sk_c7)**.
% 0.21/0.47  674[3:Rew:660.0,672.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.47  675[3:Rew:663.0,674.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.47  676[3:Rew:675.0,360.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.21/0.47  677[3:Rew:675.0,367.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),u)**.
% 0.21/0.47  678[3:Rew:675.0,663.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.47  679[3:Rew:675.0,664.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.21/0.47  681[3:Rew:675.0,364.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c7),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c6)** -> .
% 0.21/0.47  683[3:Rew:675.0,681.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c7),sk_c7)** equal(multiply(sk_c7,multiply(u,sk_c7)),sk_c7)** -> .
% 0.21/0.47  686[3:SpR:678.0,24.0] ||  -> equal(multiply(sk_c7,multiply(sk_c5,u)),multiply(sk_c7,u))**.
% 0.21/0.47  687[3:SpR:678.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c5)**.
% 0.21/0.47  689[3:Rew:676.0,687.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.21/0.47  694[3:SpR:679.0,72.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c7)**.
% 0.21/0.47  696[3:Rew:661.0,694.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.21/0.47  697[3:Rew:689.0,696.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.47  701[3:Rew:697.0,686.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),multiply(sk_c7,u))**.
% 0.21/0.47  703[3:Rew:677.0,701.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.21/0.47  709[3:Rew:703.0,683.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(v,sk_c7),sk_c7)** equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.21/0.47  712[3:Con:709.0] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.21/0.47  726[3:SpR:703.0,285.0] ||  -> equal(identity,sk_c7)**.
% 0.21/0.47  729[3:Rew:726.0,285.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.21/0.47  732[3:Rew:729.0,712.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.21/0.47  764[3:SpL:676.0,732.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.21/0.47  765[3:Obv:764.1] ||  -> .
% 0.21/0.47  766[2:Spt:765.0,1.1,360.0] || equal(inverse(sk_c7),sk_c6)** -> .
% 0.21/0.47  767[2:Spt:765.0,1.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.21/0.47  768[2:MRR:5.1,766.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.21/0.47  769[2:MRR:4.0,766.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c5)**.
% 0.21/0.47  770[2:MRR:3.0,766.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c6)**.
% 0.21/0.47  771[2:MRR:2.0,766.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.21/0.47  777[2:SpR:769.0,72.0] ||  -> equal(multiply(inverse(sk_c4),sk_c5),sk_c7)**.
% 0.21/0.47  779[2:Rew:768.0,777.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.47  780[2:Rew:770.0,779.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.21/0.47  781[2:Rew:780.0,766.0] || equal(inverse(sk_c7),sk_c7)** -> .
% 0.21/0.47  782[2:Rew:780.0,770.0] ||  -> equal(multiply(sk_c7,sk_c5),sk_c7)**.
% 0.21/0.47  783[2:Rew:780.0,771.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.21/0.47  786[2:SpR:782.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c5)**.
% 0.21/0.47  788[2:Rew:23.0,786.0] ||  -> equal(identity,sk_c5)**.
% 0.21/0.47  789[2:Rew:788.0,285.0] ||  -> equal(multiply(u,sk_c5),u)**.
% 0.21/0.47  791[2:Rew:788.0,23.0] ||  -> equal(multiply(inverse(u),u),sk_c5)**.
% 0.21/0.47  797[2:SpR:783.0,72.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c7)**.
% 0.21/0.47  799[2:Rew:767.0,797.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.21/0.47  801[2:SpR:799.0,72.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c7)**.
% 0.21/0.47  803[2:Rew:791.0,801.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.21/0.47  804[2:Rew:803.0,769.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c7)**.
% 0.21/0.47  806[2:Rew:803.0,789.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.21/0.47  811[2:Rew:806.0,804.0] ||  -> equal(sk_c4,sk_c7)**.
% 0.21/0.47  815[2:Rew:811.0,768.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.21/0.47  819[2:MRR:815.0,781.0] ||  -> .
% 0.21/0.47  % SZS output end Refutation
% 0.21/0.47  Formulae used in the proof : prove_this_1 prove_this_2 prove_this_3 prove_this_4 prove_this_5 prove_this_6 prove_this_7 prove_this_8 prove_this_9 prove_this_10 prove_this_11 prove_this_12 prove_this_13 prove_this_14 prove_this_15 prove_this_16 prove_this_17 prove_this_18 prove_this_19 prove_this_20 prove_this_21 left_identity left_inverse associativity
% 0.21/0.47  
%------------------------------------------------------------------------------