TSTP Solution File: GRP376-1 by SPASS---3.9

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : GRP376-1 : TPTP v8.1.0. Released v2.5.0.
% Transfm  : none
% Format   : tptp
% Command  : run_spass %d %s

% Computer : n008.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 11:47:05 EDT 2022

% Result   : Unsatisfiable 0.19s 0.45s
% Output   : Refutation 0.19s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : GRP376-1 : TPTP v8.1.0. Released v2.5.0.
% 0.03/0.13  % Command  : run_spass %d %s
% 0.13/0.34  % Computer : n008.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 600
% 0.13/0.34  % DateTime : Mon Jun 13 13:33:07 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.19/0.45  
% 0.19/0.45  SPASS V 3.9 
% 0.19/0.45  SPASS beiseite: Proof found.
% 0.19/0.45  % SZS status Theorem
% 0.19/0.45  Problem: /export/starexec/sandbox/benchmark/theBenchmark.p 
% 0.19/0.45  SPASS derived 471 clauses, backtracked 251 clauses, performed 11 splits and kept 474 clauses.
% 0.19/0.45  SPASS allocated 63466 KBytes.
% 0.19/0.45  SPASS spent	0:00:00.10 on the problem.
% 0.19/0.45  		0:00:00.04 for the input.
% 0.19/0.45  		0:00:00.00 for the FLOTTER CNF translation.
% 0.19/0.45  		0:00:00.00 for inferences.
% 0.19/0.45  		0:00:00.00 for the backtracking.
% 0.19/0.45  		0:00:00.04 for the reduction.
% 0.19/0.45  
% 0.19/0.45  
% 0.19/0.45  Here is a proof with depth 4, length 238 :
% 0.19/0.45  % SZS output start Refutation
% 0.19/0.45  1[0:Inp] ||  -> equal(inverse(sk_c7),sk_c6) equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.19/0.45  2[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7)** equal(inverse(sk_c7),sk_c6).
% 0.19/0.45  3[0:Inp] ||  -> equal(inverse(sk_c7),sk_c6) equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.19/0.45  4[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6)** equal(inverse(sk_c7),sk_c6).
% 0.19/0.45  5[0:Inp] ||  -> equal(inverse(sk_c7),sk_c6) equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.19/0.45  6[0:Inp] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.19/0.45  11[0:Inp] ||  -> equal(inverse(sk_c1),sk_c7) equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.19/0.45  16[0:Inp] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  17[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  18[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)** equal(multiply(sk_c5,sk_c6),sk_c7).
% 0.19/0.45  19[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  20[0:Inp] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)** equal(multiply(sk_c5,sk_c6),sk_c7).
% 0.19/0.45  21[0:Inp] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  22[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  23[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7) equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  24[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  26[0:Inp] ||  -> equal(inverse(sk_c2),sk_c5) equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.19/0.45  27[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  28[0:Inp] ||  -> equal(inverse(sk_c2),sk_c5) equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.19/0.45  29[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  31[0:Inp] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(inverse(w),sk_c5) equal(inverse(x),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c5),sk_c6)**+ equal(multiply(v,sk_c6),sk_c7)** equal(multiply(w,sk_c5),sk_c7)** equal(multiply(x,sk_c7),sk_c6)** equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7)** -> .
% 0.19/0.45  32[0:Inp] ||  -> equal(multiply(identity,u),u)**.
% 0.19/0.45  33[0:Inp] ||  -> equal(multiply(inverse(u),u),identity)**.
% 0.19/0.45  34[0:Inp] ||  -> equal(multiply(multiply(u,v),w),multiply(u,multiply(v,w)))**.
% 0.19/0.45  35[1:Spt:31.1,31.6] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c6),sk_c7)** -> .
% 0.19/0.45  36[2:Spt:1.1] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.19/0.45  40[3:Spt:2.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.19/0.45  43[1:SpL:32.0,35.1] || equal(inverse(identity),sk_c7)** equal(sk_c6,sk_c7) -> .
% 0.19/0.45  46[4:Spt:3.1] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.19/0.45  48[4:SpL:46.0,35.1] || equal(inverse(sk_c3),sk_c7)** equal(sk_c7,sk_c7) -> .
% 0.19/0.45  49[4:Obv:48.1] || equal(inverse(sk_c3),sk_c7)** -> .
% 0.19/0.45  50[4:Rew:40.0,49.0] || equal(sk_c7,sk_c7)* -> .
% 0.19/0.45  51[4:Obv:50.0] ||  -> .
% 0.19/0.45  52[4:Spt:51.0,3.1,46.0] || equal(multiply(sk_c3,sk_c6),sk_c7)** -> .
% 0.19/0.45  53[4:Spt:51.0,3.0] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  54[4:MRR:28.1,52.0] ||  -> equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  56[4:MRR:23.0,52.0] ||  -> equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  57[4:MRR:18.0,52.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  64[4:SpL:57.0,35.1] || equal(inverse(sk_c5),sk_c7)** equal(sk_c7,sk_c7) -> .
% 0.19/0.45  65[4:Obv:64.1] || equal(inverse(sk_c5),sk_c7)** -> .
% 0.19/0.45  70[4:SpR:53.0,33.0] ||  -> equal(multiply(sk_c6,sk_c7),identity)**.
% 0.19/0.45  71[4:SpR:54.0,33.0] ||  -> equal(multiply(sk_c5,sk_c2),identity)**.
% 0.19/0.45  73[1:SpL:33.0,35.1] || equal(inverse(inverse(sk_c6)),sk_c7)** equal(identity,sk_c7) -> .
% 0.19/0.45  74[4:Rew:36.0,70.0] ||  -> equal(identity,sk_c5)**.
% 0.19/0.45  75[4:Rew:74.0,32.0] ||  -> equal(multiply(sk_c5,u),u)**.
% 0.19/0.45  80[4:Rew:74.0,71.0] ||  -> equal(multiply(sk_c5,sk_c2),sk_c5)**.
% 0.19/0.45  83[4:Rew:75.0,80.0] ||  -> equal(sk_c2,sk_c5)**.
% 0.19/0.45  91[4:Rew:83.0,54.0] ||  -> equal(inverse(sk_c5),sk_c5)**.
% 0.19/0.45  92[4:Rew:83.0,56.0] ||  -> equal(multiply(sk_c5,sk_c5),sk_c7)**.
% 0.19/0.45  93[4:Rew:91.0,65.0] || equal(sk_c5,sk_c7)** -> .
% 0.19/0.45  95[4:Rew:75.0,92.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.45  96[4:MRR:95.0,93.0] ||  -> .
% 0.19/0.45  101[3:Spt:96.0,2.0,40.0] || equal(inverse(sk_c3),sk_c7)** -> .
% 0.19/0.45  102[3:Spt:96.0,2.1] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  103[3:MRR:27.0,101.0] ||  -> equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  105[3:MRR:22.0,101.0] ||  -> equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  106[3:MRR:17.0,101.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  119[3:SpR:102.0,33.0] ||  -> equal(multiply(sk_c6,sk_c7),identity)**.
% 0.19/0.45  120[3:SpR:103.0,33.0] ||  -> equal(multiply(sk_c5,sk_c2),identity)**.
% 0.19/0.45  123[3:Rew:36.0,119.0] ||  -> equal(identity,sk_c5)**.
% 0.19/0.45  125[3:Rew:123.0,32.0] ||  -> equal(multiply(sk_c5,u),u)**.
% 0.19/0.45  128[3:Rew:123.0,73.1] || equal(inverse(inverse(sk_c6)),sk_c7)** equal(sk_c5,sk_c7) -> .
% 0.19/0.45  129[3:Rew:123.0,120.0] ||  -> equal(multiply(sk_c5,sk_c2),sk_c5)**.
% 0.19/0.45  132[3:Rew:125.0,106.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.45  133[3:Rew:125.0,129.0] ||  -> equal(sk_c2,sk_c5)**.
% 0.19/0.45  134[3:Rew:132.0,102.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.19/0.45  141[3:Rew:133.0,105.0] ||  -> equal(multiply(sk_c5,sk_c5),sk_c7)**.
% 0.19/0.45  142[3:Rew:125.0,141.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.45  158[3:Rew:142.0,128.1,134.0,128.0,134.0,128.0,132.0,128.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.19/0.45  159[3:Obv:158.1] ||  -> .
% 0.19/0.45  160[2:Spt:159.0,1.1,36.0] || equal(multiply(sk_c6,sk_c7),sk_c5)** -> .
% 0.19/0.45  161[2:Spt:159.0,1.0] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  163[2:MRR:11.1,160.0] ||  -> equal(inverse(sk_c1),sk_c7)**.
% 0.19/0.45  166[2:MRR:6.0,160.0] ||  -> equal(multiply(sk_c1,sk_c7),sk_c6)**.
% 0.19/0.45  175[2:SpR:161.0,33.0] ||  -> equal(multiply(sk_c6,sk_c7),identity)**.
% 0.19/0.45  177[2:SpR:163.0,33.0] ||  -> equal(multiply(sk_c7,sk_c1),identity)**.
% 0.19/0.45  185[0:SpR:33.0,34.0] ||  -> equal(multiply(inverse(u),multiply(u,v)),multiply(identity,v))**.
% 0.19/0.45  186[0:Rew:32.0,185.0] ||  -> equal(multiply(inverse(u),multiply(u,v)),v)**.
% 0.19/0.45  189[2:SpR:175.0,34.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),multiply(identity,u))**.
% 0.19/0.45  190[2:Rew:32.0,189.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.19/0.45  199[2:SpR:177.0,190.0] ||  -> equal(multiply(sk_c6,identity),sk_c1)**.
% 0.19/0.45  202[0:SpR:186.0,186.0] ||  -> equal(multiply(inverse(inverse(u)),v),multiply(u,v))**.
% 0.19/0.45  207[2:SpR:166.0,186.0] ||  -> equal(multiply(inverse(sk_c1),sk_c6),sk_c7)**.
% 0.19/0.45  210[0:SpR:33.0,186.0] ||  -> equal(multiply(inverse(inverse(u)),identity),u)**.
% 0.19/0.45  218[2:Rew:163.0,207.0] ||  -> equal(multiply(sk_c7,sk_c6),sk_c7)**.
% 0.19/0.45  221[0:Rew:202.0,210.0] ||  -> equal(multiply(u,identity),u)**.
% 0.19/0.45  223[2:Rew:221.0,199.0] ||  -> equal(sk_c1,sk_c6)**.
% 0.19/0.45  225[2:Rew:223.0,166.0] ||  -> equal(multiply(sk_c6,sk_c7),sk_c6)**.
% 0.19/0.45  226[2:Rew:223.0,177.0] ||  -> equal(multiply(sk_c7,sk_c6),identity)**.
% 0.19/0.45  232[2:Rew:175.0,225.0] ||  -> equal(identity,sk_c6)**.
% 0.19/0.45  238[2:Rew:232.0,43.0] || equal(inverse(sk_c6),sk_c7)** equal(sk_c6,sk_c7) -> .
% 0.19/0.45  241[2:Rew:218.0,226.0,232.0,226.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.45  242[2:Rew:241.0,161.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.19/0.45  281[2:Rew:241.0,238.1,242.0,238.0,241.0,238.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.19/0.45  282[2:Obv:281.1] ||  -> .
% 0.19/0.45  285[1:Spt:282.0,31.0,31.2,31.3,31.4,31.5,31.7,31.8,31.9,31.10] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c5),sk_c6)**+ equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7)** -> .
% 0.19/0.45  287[2:Spt:1.1] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.19/0.45  288[2:Rew:287.0,285.7] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(sk_c5,sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7)** -> .
% 0.19/0.45  290[2:Obv:288.7] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(inverse(sk_c7),sk_c6) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(multiply(sk_c5,sk_c6),sk_c7)** -> .
% 0.19/0.45  292[2:SpR:287.0,34.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),multiply(sk_c5,u))**.
% 0.19/0.45  293[2:SpR:287.0,186.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c7)**.
% 0.19/0.45  295[3:Spt:2.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.19/0.45  296[3:SpR:295.0,186.0] ||  -> equal(multiply(sk_c7,multiply(sk_c3,u)),u)**.
% 0.19/0.45  298[4:Spt:4.0] ||  -> equal(inverse(sk_c4),sk_c6)**.
% 0.19/0.45  299[4:SpR:298.0,186.0] ||  -> equal(multiply(sk_c6,multiply(sk_c4,u)),u)**.
% 0.19/0.45  301[5:Spt:3.1] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.19/0.45  303[5:SpR:301.0,186.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c6)**.
% 0.19/0.45  305[5:Rew:295.0,303.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.19/0.45  309[6:Spt:5.1] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.19/0.45  311[6:SpR:309.0,186.0] ||  -> equal(multiply(inverse(sk_c4),sk_c6),sk_c5)**.
% 0.19/0.45  313[6:Rew:298.0,311.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.19/0.45  315[6:SpR:313.0,186.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c6)**.
% 0.19/0.45  317[6:Rew:293.0,315.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.45  318[6:Rew:317.0,287.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.19/0.45  319[6:Rew:317.0,298.0] ||  -> equal(inverse(sk_c4),sk_c7)**.
% 0.19/0.45  321[6:Rew:317.0,305.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.19/0.45  322[6:Rew:317.0,309.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c7)**.
% 0.19/0.45  325[6:Rew:317.0,290.3] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(inverse(sk_c7),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(multiply(sk_c5,sk_c6),sk_c7)** -> .
% 0.19/0.45  326[6:Rew:317.0,293.0] ||  -> equal(multiply(inverse(sk_c7),sk_c5),sk_c7)**.
% 0.19/0.45  333[6:Rew:318.0,321.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.45  335[6:Rew:333.0,322.0] ||  -> equal(multiply(sk_c4,sk_c7),sk_c7)**.
% 0.19/0.45  337[6:Rew:33.0,326.0,333.0,326.0] ||  -> equal(identity,sk_c7)**.
% 0.19/0.45  339[6:Rew:337.0,221.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.19/0.45  343[6:Rew:339.0,335.0] ||  -> equal(sk_c4,sk_c7)**.
% 0.19/0.45  345[6:Rew:343.0,319.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.19/0.45  355[6:Rew:333.0,325.7,339.0,325.7,317.0,325.7,339.0,325.6,317.0,325.6,339.0,325.5,333.0,325.5,339.0,325.4,333.0,325.4,317.0,325.4,345.0,325.3,333.0,325.1,317.0,325.0] || equal(inverse(u),sk_c7)** equal(inverse(v),sk_c7)** equal(inverse(w),sk_c7)** equal(sk_c7,sk_c7) equal(u,sk_c7) equal(v,sk_c7) equal(w,sk_c7) equal(sk_c7,sk_c7) -> .
% 0.19/0.45  356[6:Obv:355.7] || equal(inverse(u),sk_c7)** equal(inverse(v),sk_c7)** equal(inverse(w),sk_c7)** equal(u,sk_c7) equal(v,sk_c7) equal(w,sk_c7) -> .
% 0.19/0.45  357[6:Con:356.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.19/0.45  387[6:SpL:345.0,357.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.19/0.45  388[6:Obv:387.1] ||  -> .
% 0.19/0.45  389[6:Spt:388.0,5.1,309.0] || equal(multiply(sk_c4,sk_c5),sk_c6)** -> .
% 0.19/0.45  390[6:Spt:388.0,5.0] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  395[6:MRR:20.0,389.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  401[6:SpR:390.0,186.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.19/0.45  403[6:Rew:292.0,401.0] ||  -> equal(multiply(sk_c5,u),u)**.
% 0.19/0.45  405[6:Rew:403.0,395.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.45  408[6:Rew:405.0,305.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.19/0.45  410[6:Rew:405.0,287.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.19/0.45  413[6:Rew:405.0,389.0] || equal(multiply(sk_c4,sk_c5),sk_c7)** -> .
% 0.19/0.45  414[6:Rew:405.0,299.0] ||  -> equal(multiply(sk_c7,multiply(sk_c4,u)),u)**.
% 0.19/0.45  420[6:Rew:408.0,410.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.45  423[6:Rew:420.0,403.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.19/0.45  426[6:Rew:420.0,413.0] || equal(multiply(sk_c4,sk_c7),sk_c7)** -> .
% 0.19/0.45  428[6:Rew:423.0,414.0] ||  -> equal(multiply(sk_c4,u),u)**.
% 0.19/0.45  429[6:UnC:428.0,426.0] ||  -> .
% 0.19/0.45  434[5:Spt:429.0,3.1,301.0] || equal(multiply(sk_c3,sk_c6),sk_c7)** -> .
% 0.19/0.45  435[5:Spt:429.0,3.0] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  436[5:MRR:28.1,434.0] ||  -> equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  438[5:MRR:23.0,434.0] ||  -> equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  439[5:MRR:18.0,434.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  445[5:SpR:435.0,186.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.19/0.45  447[5:Rew:292.0,445.0] ||  -> equal(multiply(sk_c5,u),u)**.
% 0.19/0.45  448[5:Rew:447.0,439.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.45  454[5:Rew:448.0,434.0] || equal(multiply(sk_c3,sk_c7),sk_c7)** -> .
% 0.19/0.45  466[5:SpR:436.0,186.0] ||  -> equal(multiply(sk_c5,multiply(sk_c2,u)),u)**.
% 0.19/0.45  468[5:Rew:447.0,466.0] ||  -> equal(multiply(sk_c2,u),u)**.
% 0.19/0.45  469[5:Rew:468.0,438.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.45  471[5:Rew:469.0,447.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.19/0.45  478[5:Rew:471.0,296.0] ||  -> equal(multiply(sk_c3,u),u)**.
% 0.19/0.45  479[5:UnC:478.0,454.0] ||  -> .
% 0.19/0.45  483[4:Spt:479.0,4.0,298.0] || equal(inverse(sk_c4),sk_c6)** -> .
% 0.19/0.45  484[4:Spt:479.0,4.1] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  485[4:MRR:29.0,483.0] ||  -> equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  487[4:MRR:24.0,483.0] ||  -> equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  488[4:MRR:19.0,483.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  490[4:Rew:488.0,290.7,484.0,290.3] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(sk_c6,sk_c6) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(sk_c7,sk_c7) -> .
% 0.19/0.45  491[4:Obv:490.7] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** -> .
% 0.19/0.45  494[4:SpR:484.0,186.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.19/0.45  496[4:Rew:292.0,494.0] ||  -> equal(multiply(sk_c5,u),u)**.
% 0.19/0.45  497[4:Rew:496.0,488.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.45  499[4:Rew:497.0,484.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.19/0.45  504[4:Rew:497.0,491.0] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** -> .
% 0.19/0.45  508[4:Rew:497.0,504.5,497.0,504.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c7)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c7)** -> .
% 0.19/0.45  511[4:SpR:485.0,186.0] ||  -> equal(multiply(sk_c5,multiply(sk_c2,u)),u)**.
% 0.19/0.45  513[4:Rew:496.0,511.0] ||  -> equal(multiply(sk_c2,u),u)**.
% 0.19/0.45  514[4:Rew:513.0,487.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.45  516[4:Rew:514.0,496.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.19/0.45  519[4:Rew:514.0,508.1] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c7)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c7)** -> .
% 0.19/0.45  523[4:Con:519.1] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c7)** equal(multiply(v,sk_c7),sk_c7)** -> .
% 0.19/0.45  524[4:Rew:514.0,523.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c7),sk_c7)** equal(multiply(v,sk_c7),sk_c7)** -> .
% 0.19/0.45  525[4:Con:524.1] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.19/0.45  548[0:SpR:33.0,221.0] ||  -> equal(inverse(identity),identity)**.
% 0.19/0.45  550[3:SpR:295.0,33.0] ||  -> equal(multiply(sk_c7,sk_c3),identity)**.
% 0.19/0.45  555[4:Rew:516.0,550.0] ||  -> equal(identity,sk_c3)**.
% 0.19/0.45  556[4:Rew:555.0,221.0] ||  -> equal(multiply(u,sk_c3),u)**.
% 0.19/0.45  559[4:Rew:555.0,548.0] ||  -> equal(inverse(sk_c3),sk_c3)**.
% 0.19/0.45  560[4:Rew:295.0,559.0] ||  -> equal(sk_c3,sk_c7)**.
% 0.19/0.45  572[4:Rew:560.0,556.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.19/0.45  573[4:Rew:572.0,525.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.19/0.45  601[4:SpL:499.0,573.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.19/0.45  602[4:Obv:601.1] ||  -> .
% 0.19/0.45  603[3:Spt:602.0,2.0,295.0] || equal(inverse(sk_c3),sk_c7)** -> .
% 0.19/0.45  604[3:Spt:602.0,2.1] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.45  606[3:MRR:27.0,603.0] ||  -> equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.45  608[3:MRR:22.0,603.0] ||  -> equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.45  609[3:MRR:17.0,603.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.45  612[3:Rew:609.0,290.7,604.0,290.3] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(sk_c6,sk_c6) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** equal(sk_c7,sk_c7) -> .
% 0.19/0.45  613[3:Obv:612.7] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** -> .
% 0.19/0.45  616[3:SpR:604.0,186.0] ||  -> equal(multiply(sk_c6,multiply(sk_c7,u)),u)**.
% 0.19/0.45  618[3:Rew:292.0,616.0] ||  -> equal(multiply(sk_c5,u),u)**.
% 0.19/0.46  619[3:Rew:618.0,609.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.46  621[3:Rew:619.0,604.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.19/0.46  625[3:Rew:619.0,613.0] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c6)** -> .
% 0.19/0.46  629[3:Rew:619.0,625.5,619.0,625.3] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c5) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c7)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c7)** -> .
% 0.19/0.46  632[3:SpR:606.0,186.0] ||  -> equal(multiply(sk_c5,multiply(sk_c2,u)),u)**.
% 0.19/0.46  634[3:Rew:618.0,632.0] ||  -> equal(multiply(sk_c2,u),u)**.
% 0.19/0.46  635[3:Rew:634.0,608.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.46  636[3:Rew:635.0,606.0] ||  -> equal(inverse(sk_c2),sk_c7)**.
% 0.19/0.46  640[3:Rew:635.0,629.1] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(inverse(w),sk_c7) equal(multiply(u,sk_c5),sk_c7)** equal(multiply(v,sk_c5),sk_c7)** equal(multiply(w,sk_c7),sk_c7)** -> .
% 0.19/0.46  643[3:Con:640.1] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c7)** equal(multiply(v,sk_c7),sk_c7)** -> .
% 0.19/0.46  644[3:Rew:635.0,643.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c7),sk_c7)** equal(multiply(v,sk_c7),sk_c7)** -> .
% 0.19/0.46  645[3:Con:644.1] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.19/0.46  672[3:SpR:634.0,221.0] ||  -> equal(identity,sk_c2)**.
% 0.19/0.46  674[3:Rew:672.0,548.0] ||  -> equal(inverse(sk_c2),sk_c2)**.
% 0.19/0.46  676[3:Rew:672.0,221.0] ||  -> equal(multiply(u,sk_c2),u)**.
% 0.19/0.46  678[3:Rew:636.0,674.0] ||  -> equal(sk_c2,sk_c7)**.
% 0.19/0.46  683[3:Rew:678.0,676.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.19/0.46  684[3:Rew:683.0,645.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.19/0.46  706[3:SpL:621.0,684.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.19/0.46  707[3:Obv:706.1] ||  -> .
% 0.19/0.46  708[2:Spt:707.0,1.1,287.0] || equal(multiply(sk_c6,sk_c7),sk_c5)** -> .
% 0.19/0.46  709[2:Spt:707.0,1.0] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.19/0.46  710[2:MRR:26.1,708.0] ||  -> equal(inverse(sk_c2),sk_c5)**.
% 0.19/0.46  712[2:MRR:21.0,708.0] ||  -> equal(multiply(sk_c2,sk_c5),sk_c7)**.
% 0.19/0.46  713[2:MRR:16.0,708.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.19/0.46  725[2:SpR:712.0,186.0] ||  -> equal(multiply(inverse(sk_c2),sk_c7),sk_c5)**.
% 0.19/0.46  727[2:Rew:710.0,725.0] ||  -> equal(multiply(sk_c5,sk_c7),sk_c5)**.
% 0.19/0.46  736[2:SpR:727.0,186.0] ||  -> equal(multiply(inverse(sk_c5),sk_c5),sk_c7)**.
% 0.19/0.46  738[2:Rew:33.0,736.0] ||  -> equal(identity,sk_c7)**.
% 0.19/0.46  739[2:Rew:738.0,548.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.19/0.46  740[2:Rew:738.0,221.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.19/0.46  741[2:Rew:738.0,32.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.19/0.46  743[2:Rew:709.0,739.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.19/0.46  745[2:Rew:743.0,713.0] ||  -> equal(multiply(sk_c5,sk_c7),sk_c7)**.
% 0.19/0.46  747[2:Rew:743.0,708.0] || equal(multiply(sk_c7,sk_c7),sk_c5)** -> .
% 0.19/0.46  755[2:Rew:740.0,745.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.19/0.46  764[2:Rew:741.0,747.0,755.0,747.0] || equal(sk_c7,sk_c7)* -> .
% 0.19/0.46  765[2:Obv:764.0] ||  -> .
% 0.19/0.46  % SZS output end Refutation
% 0.19/0.46  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_11 prove_this_16 prove_this_17 prove_this_18 prove_this_19 prove_this_20 prove_this_21 prove_this_22 prove_this_23 prove_this_24 prove_this_26 prove_this_27 prove_this_28 prove_this_29 prove_this_31 left_identity left_inverse associativity
% 0.19/0.46  
%------------------------------------------------------------------------------