TSTP Solution File: GRP311-1 by SPASS---3.9

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : GRP311-1 : TPTP v8.1.0. Released v2.5.0.
% Transfm  : none
% Format   : tptp
% Command  : run_spass %d %s

% Computer : n003.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 11:46:48 EDT 2022

% Result   : Unsatisfiable 0.20s 0.47s
% Output   : Refutation 0.20s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : GRP311-1 : TPTP v8.1.0. Released v2.5.0.
% 0.07/0.13  % Command  : run_spass %d %s
% 0.13/0.34  % Computer : n003.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 : Tue Jun 14 06:28:40 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.20/0.47  
% 0.20/0.47  SPASS V 3.9 
% 0.20/0.47  SPASS beiseite: Proof found.
% 0.20/0.47  % SZS status Theorem
% 0.20/0.47  Problem: /export/starexec/sandbox2/benchmark/theBenchmark.p 
% 0.20/0.47  SPASS derived 686 clauses, backtracked 317 clauses, performed 13 splits and kept 583 clauses.
% 0.20/0.47  SPASS allocated 63554 KBytes.
% 0.20/0.47  SPASS spent	0:00:00.12 on the problem.
% 0.20/0.47  		0:00:00.04 for the input.
% 0.20/0.47  		0:00:00.00 for the FLOTTER CNF translation.
% 0.20/0.47  		0:00:00.00 for inferences.
% 0.20/0.47  		0:00:00.00 for the backtracking.
% 0.20/0.47  		0:00:00.05 for the reduction.
% 0.20/0.47  
% 0.20/0.47  
% 0.20/0.47  Here is a proof with depth 5, length 279 :
% 0.20/0.47  % SZS output start Refutation
% 0.20/0.47  1[0:Inp] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5)** equal(multiply(sk_c7,sk_c6),sk_c5).
% 0.20/0.47  2[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5)**.
% 0.20/0.47  3[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)** equal(multiply(sk_c7,sk_c6),sk_c5).
% 0.20/0.47  4[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(multiply(sk_c7,sk_c6),sk_c5)**.
% 0.20/0.47  5[0:Inp] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)** equal(multiply(sk_c7,sk_c6),sk_c5).
% 0.20/0.47  6[0:Inp] ||  -> equal(inverse(sk_c7),sk_c5) equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.20/0.47  7[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7)** equal(inverse(sk_c7),sk_c5).
% 0.20/0.47  8[0:Inp] ||  -> equal(inverse(sk_c7),sk_c5) equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.47  9[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6)** equal(inverse(sk_c7),sk_c5).
% 0.20/0.47  10[0:Inp] ||  -> equal(inverse(sk_c7),sk_c5) equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.47  12[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.20/0.47  13[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)** equal(multiply(sk_c5,sk_c6),sk_c7).
% 0.20/0.47  16[0:Inp] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5)** equal(multiply(sk_c7,sk_c2),sk_c6).
% 0.20/0.47  17[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c7,sk_c2),sk_c6)**.
% 0.20/0.47  18[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)** equal(multiply(sk_c7,sk_c2),sk_c6).
% 0.20/0.47  19[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(multiply(sk_c7,sk_c2),sk_c6)**.
% 0.20/0.47  20[0:Inp] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)** equal(multiply(sk_c7,sk_c2),sk_c6).
% 0.20/0.47  21[0:Inp] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  22[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  23[0:Inp] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7) equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  24[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  25[0:Inp] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6) equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  26[0:Inp] ||  -> equal(inverse(sk_c1),sk_c7) equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.20/0.47  27[0:Inp] ||  -> equal(inverse(sk_c3),sk_c7) equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.47  28[0:Inp] ||  -> equal(inverse(sk_c1),sk_c7) equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.47  29[0:Inp] ||  -> equal(inverse(sk_c4),sk_c6) equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.47  30[0:Inp] ||  -> equal(inverse(sk_c1),sk_c7) equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.47  31[0:Inp] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(inverse(w),sk_c7) equal(inverse(sk_c7),sk_c5) equal(multiply(w,sk_c7),x)*+ equal(multiply(u,sk_c5),sk_c6)** equal(multiply(v,sk_c6),sk_c7)** equal(multiply(sk_c7,x),sk_c6)** equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7)** equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  32[0:Inp] ||  -> equal(multiply(identity,u),u)**.
% 0.20/0.47  33[0:Inp] ||  -> equal(multiply(inverse(u),u),identity)**.
% 0.20/0.47  34[0:Inp] ||  -> equal(multiply(multiply(u,v),w),multiply(u,multiply(v,w)))**.
% 0.20/0.47  35[1:Spt:31.1,31.6] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c6),sk_c7)** -> .
% 0.20/0.47  36[2:Spt:6.1] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.20/0.47  40[3:Spt:7.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.20/0.47  46[4:Spt:8.1] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.47  48[4:SpL:46.0,35.1] || equal(inverse(sk_c3),sk_c7)** equal(sk_c7,sk_c7) -> .
% 0.20/0.47  49[4:Obv:48.1] || equal(inverse(sk_c3),sk_c7)** -> .
% 0.20/0.47  50[4:Rew:40.0,49.0] || equal(sk_c7,sk_c7)* -> .
% 0.20/0.47  51[4:Obv:50.0] ||  -> .
% 0.20/0.47  52[4:Spt:51.0,8.1,46.0] || equal(multiply(sk_c3,sk_c6),sk_c7)** -> .
% 0.20/0.47  53[4:Spt:51.0,8.0] ||  -> equal(inverse(sk_c7),sk_c5)**.
% 0.20/0.47  54[4:MRR:28.1,52.0] ||  -> equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.47  55[4:MRR:23.0,52.0] ||  -> equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  56[4:MRR:18.0,52.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c6)**.
% 0.20/0.47  57[4:MRR:13.0,52.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.20/0.47  58[4:MRR:3.0,52.0] ||  -> equal(multiply(sk_c7,sk_c6),sk_c5)**.
% 0.20/0.47  72[3:SpR:40.0,33.0] ||  -> equal(multiply(sk_c7,sk_c3),identity)**.
% 0.20/0.47  73[4:SpR:53.0,33.0] ||  -> equal(multiply(sk_c5,sk_c7),identity)**.
% 0.20/0.47  74[4:SpR:54.0,33.0] ||  -> equal(multiply(sk_c7,sk_c1),identity)**.
% 0.20/0.47  75[1:SpL:33.0,35.1] || equal(inverse(inverse(sk_c6)),sk_c7)** equal(identity,sk_c7) -> .
% 0.20/0.47  86[4:SpR:73.0,34.0] ||  -> equal(multiply(sk_c5,multiply(sk_c7,u)),multiply(identity,u))**.
% 0.20/0.47  88[0:SpR:33.0,34.0] ||  -> equal(multiply(inverse(u),multiply(u,v)),multiply(identity,v))**.
% 0.20/0.47  95[4:Rew:32.0,86.0] ||  -> equal(multiply(sk_c5,multiply(sk_c7,u)),u)**.
% 0.20/0.47  99[0:Rew:32.0,88.0] ||  -> equal(multiply(inverse(u),multiply(u,v)),v)**.
% 0.20/0.47  104[4:SpR:56.0,95.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c2)**.
% 0.20/0.47  105[4:SpR:72.0,95.0] ||  -> equal(multiply(sk_c5,identity),sk_c3)**.
% 0.20/0.47  106[4:SpR:74.0,95.0] ||  -> equal(multiply(sk_c5,identity),sk_c1)**.
% 0.20/0.47  107[4:Rew:57.0,104.0] ||  -> equal(sk_c2,sk_c7)**.
% 0.20/0.47  108[4:Rew:107.0,55.0] ||  -> equal(multiply(sk_c1,sk_c7),sk_c7)**.
% 0.20/0.47  109[4:Rew:107.0,56.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.47  112[4:Rew:105.0,106.0] ||  -> equal(sk_c1,sk_c3)**.
% 0.20/0.47  116[4:Rew:112.0,108.0] ||  -> equal(multiply(sk_c3,sk_c7),sk_c7)**.
% 0.20/0.47  125[4:SpR:105.0,34.0] ||  -> equal(multiply(sk_c5,multiply(identity,u)),multiply(sk_c3,u))**.
% 0.20/0.47  127[4:Rew:32.0,125.0] ||  -> equal(multiply(sk_c3,u),multiply(sk_c5,u))**.
% 0.20/0.47  128[4:Rew:127.0,116.0] ||  -> equal(multiply(sk_c5,sk_c7),sk_c7)**.
% 0.20/0.47  132[4:Rew:73.0,128.0] ||  -> equal(identity,sk_c7)**.
% 0.20/0.47  133[4:Rew:132.0,32.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.20/0.47  140[4:Rew:132.0,75.1] || equal(inverse(inverse(sk_c6)),sk_c7)** equal(sk_c7,sk_c7) -> .
% 0.20/0.47  142[4:Rew:133.0,58.0] ||  -> equal(sk_c5,sk_c6)**.
% 0.20/0.47  143[4:Rew:133.0,109.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.47  150[4:Rew:142.0,53.0] ||  -> equal(inverse(sk_c7),sk_c6)**.
% 0.20/0.47  163[4:Rew:143.0,150.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.20/0.47  194[4:Obv:140.1] || equal(inverse(inverse(sk_c6)),sk_c7)** -> .
% 0.20/0.47  195[4:Rew:163.0,194.0,163.0,194.0,143.0,194.0] || equal(sk_c7,sk_c7)* -> .
% 0.20/0.47  196[4:Obv:195.0] ||  -> .
% 0.20/0.47  197[3:Spt:196.0,7.0,40.0] || equal(inverse(sk_c3),sk_c7)** -> .
% 0.20/0.47  198[3:Spt:196.0,7.1] ||  -> equal(inverse(sk_c7),sk_c5)**.
% 0.20/0.47  199[3:MRR:27.0,197.0] ||  -> equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.47  200[3:MRR:22.0,197.0] ||  -> equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  201[3:MRR:17.0,197.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c6)**.
% 0.20/0.47  202[3:MRR:12.0,197.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.20/0.47  224[3:SpR:198.0,33.0] ||  -> equal(multiply(sk_c5,sk_c7),identity)**.
% 0.20/0.47  235[0:SpR:99.0,99.0] ||  -> equal(multiply(inverse(inverse(u)),v),multiply(u,v))**.
% 0.20/0.47  240[3:SpR:200.0,99.0] ||  -> equal(multiply(inverse(sk_c1),sk_c2),sk_c7)**.
% 0.20/0.47  247[0:SpR:33.0,99.0] ||  -> equal(multiply(inverse(inverse(u)),identity),u)**.
% 0.20/0.47  251[3:Rew:201.0,240.0,199.0,240.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.47  254[3:Rew:251.0,36.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.47  256[3:Rew:251.0,202.0] ||  -> equal(multiply(sk_c5,sk_c7),sk_c7)**.
% 0.20/0.47  261[3:Rew:251.0,75.0] || equal(inverse(inverse(sk_c7)),sk_c7)** equal(identity,sk_c7) -> .
% 0.20/0.47  269[3:Rew:224.0,256.0] ||  -> equal(identity,sk_c7)**.
% 0.20/0.47  270[3:Rew:269.0,32.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.20/0.47  276[3:Rew:270.0,254.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.20/0.47  281[3:Rew:276.0,198.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.20/0.47  312[3:Rew:269.0,261.1,281.0,261.0,281.0,261.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.20/0.47  313[3:Obv:312.1] ||  -> .
% 0.20/0.47  317[2:Spt:313.0,6.1,36.0] || equal(multiply(sk_c6,sk_c7),sk_c5)** -> .
% 0.20/0.47  318[2:Spt:313.0,6.0] ||  -> equal(inverse(sk_c7),sk_c5)**.
% 0.20/0.47  319[0:Rew:235.0,247.0] ||  -> equal(multiply(u,identity),u)**.
% 0.20/0.47  320[2:MRR:26.1,317.0] ||  -> equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.47  321[2:MRR:21.0,317.0] ||  -> equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  322[2:MRR:16.0,317.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c6)**.
% 0.20/0.47  324[2:MRR:1.0,317.0] ||  -> equal(multiply(sk_c7,sk_c6),sk_c5)**.
% 0.20/0.47  330[2:SpR:321.0,99.0] ||  -> equal(multiply(inverse(sk_c1),sk_c2),sk_c7)**.
% 0.20/0.47  332[2:Rew:320.0,330.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c7)**.
% 0.20/0.47  333[2:Rew:322.0,332.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.47  334[2:Rew:333.0,317.0] || equal(multiply(sk_c7,sk_c7),sk_c5)** -> .
% 0.20/0.47  339[2:Rew:333.0,324.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.47  342[2:Rew:339.0,334.0] || equal(sk_c5,sk_c5)* -> .
% 0.20/0.47  343[2:Obv:342.0] ||  -> .
% 0.20/0.47  346[1:Spt:343.0,31.0,31.2,31.3,31.4,31.5,31.7,31.8,31.9,31.10] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(inverse(sk_c7),sk_c5) equal(multiply(v,sk_c7),w)*+ equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,w),sk_c6)** equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7)** equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  347[1:EqR:346.3] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(inverse(sk_c7),sk_c5) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(multiply(sk_c6,sk_c7),sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  349[2:Spt:6.1] ||  -> equal(multiply(sk_c6,sk_c7),sk_c5)**.
% 0.20/0.47  352[2:Rew:349.0,347.5] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(inverse(sk_c7),sk_c5) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(sk_c5,sk_c5) equal(multiply(sk_c5,sk_c6),sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  353[2:Obv:352.5] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(inverse(sk_c7),sk_c5) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(multiply(sk_c5,sk_c6),sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  357[2:SpR:349.0,99.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c7)**.
% 0.20/0.47  359[3:Spt:7.1] ||  -> equal(inverse(sk_c7),sk_c5)**.
% 0.20/0.47  362[3:Rew:359.0,353.2] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(sk_c5,sk_c5) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(multiply(sk_c5,sk_c6),sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  363[3:Obv:362.2] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(multiply(sk_c5,sk_c6),sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  366[3:SpR:359.0,99.0] ||  -> equal(multiply(sk_c5,multiply(sk_c7,u)),u)**.
% 0.20/0.47  368[4:Spt:12.1] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.20/0.47  371[4:Rew:368.0,363.4] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(sk_c7,sk_c7) equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  372[4:Obv:371.4] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(multiply(sk_c7,sk_c6),sk_c5) -> .
% 0.20/0.47  376[4:SpR:368.0,99.0] ||  -> equal(multiply(inverse(sk_c5),sk_c7),sk_c6)**.
% 0.20/0.47  378[5:Spt:2.1] ||  -> equal(multiply(sk_c7,sk_c6),sk_c5)**.
% 0.20/0.47  381[5:Rew:378.0,372.4] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** equal(sk_c5,sk_c5) -> .
% 0.20/0.47  382[5:Obv:381.4] || equal(inverse(u),sk_c6) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** -> .
% 0.20/0.47  392[6:Spt:27.1] ||  -> equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.47  395[7:Spt:22.1] ||  -> equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.47  397[7:SpR:395.0,99.0] ||  -> equal(multiply(inverse(sk_c1),sk_c2),sk_c7)**.
% 0.20/0.47  399[7:Rew:392.0,397.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c7)**.
% 0.20/0.47  400[7:Rew:399.0,20.1] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)** equal(sk_c6,sk_c7).
% 0.20/0.47  402[7:Rew:399.0,19.1] ||  -> equal(inverse(sk_c4),sk_c6)** equal(sk_c6,sk_c7).
% 0.20/0.47  405[7:SpR:399.0,99.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c2)**.
% 0.20/0.47  407[7:Rew:359.0,405.0] ||  -> equal(multiply(sk_c5,sk_c7),sk_c2)**.
% 0.20/0.47  411[7:SpR:407.0,34.0] ||  -> equal(multiply(sk_c5,multiply(sk_c7,u)),multiply(sk_c2,u))**.
% 0.20/0.47  412[7:SpR:407.0,99.0] ||  -> equal(multiply(inverse(sk_c5),sk_c2),sk_c7)**.
% 0.20/0.47  414[7:Rew:366.0,411.0] ||  -> equal(multiply(sk_c2,u),u)**.
% 0.20/0.47  426[7:SpR:414.0,319.0] ||  -> equal(identity,sk_c2)**.
% 0.20/0.47  429[7:Rew:426.0,319.0] ||  -> equal(multiply(u,sk_c2),u)**.
% 0.20/0.47  430[7:Rew:426.0,33.0] ||  -> equal(multiply(inverse(u),u),sk_c2)**.
% 0.20/0.47  432[7:Rew:429.0,412.0] ||  -> equal(inverse(sk_c5),sk_c7)**.
% 0.20/0.47  433[7:Rew:432.0,376.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.47  437[7:SpR:430.0,99.0] ||  -> equal(multiply(inverse(inverse(u)),sk_c2),u)**.
% 0.20/0.47  441[7:Rew:429.0,437.0] ||  -> equal(inverse(inverse(u)),u)**.
% 0.20/0.47  464[8:Spt:402.1] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.47  465[8:Rew:464.0,349.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.47  466[8:Rew:464.0,368.0] ||  -> equal(multiply(sk_c5,sk_c7),sk_c7)**.
% 0.20/0.47  469[8:Rew:464.0,433.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.20/0.47  478[8:Rew:464.0,382.0] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** -> .
% 0.20/0.47  479[8:Rew:407.0,466.0] ||  -> equal(sk_c2,sk_c7)**.
% 0.20/0.47  481[8:Rew:479.0,414.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.20/0.47  484[8:Rew:479.0,429.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.20/0.47  487[8:Rew:465.0,469.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.20/0.47  488[8:Rew:487.0,359.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.20/0.47  505[8:Rew:484.0,478.3,481.0,478.3,464.0,478.3,484.0,478.2,487.0,478.2,464.0,478.2] || equal(inverse(u),sk_c7)** equal(inverse(v),sk_c7)** equal(u,sk_c7) equal(v,sk_c7) -> .
% 0.20/0.47  506[8:Con:505.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.20/0.47  540[8:SpL:488.0,506.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.20/0.47  542[8:Obv:540.1] ||  -> .
% 0.20/0.47  543[8:Spt:542.0,402.1,464.0] || equal(sk_c6,sk_c7)** -> .
% 0.20/0.47  544[8:Spt:542.0,402.0] ||  -> equal(inverse(sk_c4),sk_c6)**.
% 0.20/0.47  546[8:MRR:400.1,543.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.47  549[8:SpR:544.0,441.0] ||  -> equal(inverse(sk_c6),sk_c4)**.
% 0.20/0.47  551[8:Rew:549.0,357.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c7)**.
% 0.20/0.47  552[8:Rew:546.0,551.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.47  553[8:MRR:552.0,543.0] ||  -> .
% 0.20/0.47  554[7:Spt:553.0,22.1,395.0] || equal(multiply(sk_c1,sk_c7),sk_c2)** -> .
% 0.20/0.47  555[7:Spt:553.0,22.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.20/0.47  556[7:MRR:24.1,554.0] ||  -> equal(inverse(sk_c4),sk_c6)**.
% 0.20/0.47  557[7:MRR:23.1,554.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.47  558[7:MRR:25.1,554.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.47  571[7:SpR:557.0,99.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c6)**.
% 0.20/0.47  573[7:Rew:555.0,571.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.47  585[7:SpR:558.0,99.0] ||  -> equal(multiply(inverse(sk_c4),sk_c6),sk_c5)**.
% 0.20/0.47  587[7:Rew:556.0,585.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.20/0.47  595[7:SpR:587.0,34.0] ||  -> equal(multiply(sk_c6,multiply(sk_c6,u)),multiply(sk_c5,u))**.
% 0.20/0.47  596[7:SpR:587.0,99.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c6)**.
% 0.20/0.47  598[7:Rew:357.0,596.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.47  602[7:Rew:598.0,378.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.47  606[7:Rew:598.0,573.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.20/0.47  617[7:Rew:598.0,382.0] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** -> .
% 0.20/0.47  622[7:Rew:602.0,606.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.20/0.47  623[7:Rew:622.0,359.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.20/0.47  624[7:Rew:622.0,366.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),u)**.
% 0.20/0.47  633[7:Rew:624.0,595.0,598.0,595.0,622.0,595.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.20/0.47  644[7:Rew:633.0,617.3,598.0,617.3,622.0,617.2,598.0,617.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c7),sk_c7)** equal(multiply(v,sk_c7),sk_c7)** -> .
% 0.20/0.47  645[7:Con:644.1] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.20/0.47  665[7:SpR:633.0,319.0] ||  -> equal(identity,sk_c7)**.
% 0.20/0.47  668[7:Rew:665.0,319.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.20/0.47  671[7:Rew:668.0,645.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.20/0.47  704[7:SpL:623.0,671.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.20/0.47  705[7:Obv:704.1] ||  -> .
% 0.20/0.47  706[6:Spt:705.0,27.1,392.0] || equal(inverse(sk_c1),sk_c7)** -> .
% 0.20/0.47  707[6:Spt:705.0,27.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.20/0.47  708[6:MRR:29.1,706.0] ||  -> equal(inverse(sk_c4),sk_c6)**.
% 0.20/0.47  709[6:MRR:28.0,706.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.47  710[6:MRR:30.0,706.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.47  731[6:SpR:709.0,99.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c6)**.
% 0.20/0.47  733[6:Rew:707.0,731.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.47  735[6:SpR:710.0,99.0] ||  -> equal(multiply(inverse(sk_c4),sk_c6),sk_c5)**.
% 0.20/0.48  737[6:Rew:708.0,735.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.20/0.48  742[6:SpR:737.0,34.0] ||  -> equal(multiply(sk_c6,multiply(sk_c6,u)),multiply(sk_c5,u))**.
% 0.20/0.48  743[6:SpR:737.0,99.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c6)**.
% 0.20/0.48  745[6:Rew:357.0,743.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.48  747[6:Rew:745.0,349.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.48  753[6:Rew:745.0,733.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.20/0.48  767[6:Rew:745.0,382.0] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c5),sk_c6)** equal(multiply(sk_c7,multiply(v,sk_c7)),sk_c6)** -> .
% 0.20/0.48  769[6:Rew:747.0,753.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.20/0.48  770[6:Rew:769.0,359.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.20/0.48  771[6:Rew:769.0,366.0] ||  -> equal(multiply(sk_c7,multiply(sk_c7,u)),u)**.
% 0.20/0.48  780[6:Rew:771.0,742.0,745.0,742.0,769.0,742.0] ||  -> equal(multiply(sk_c7,u),u)**.
% 0.20/0.48  789[6:Rew:780.0,767.3,745.0,767.3,769.0,767.2,745.0,767.2] || equal(inverse(u),sk_c7) equal(inverse(v),sk_c7) equal(multiply(u,sk_c7),sk_c7)** equal(multiply(v,sk_c7),sk_c7)** -> .
% 0.20/0.48  790[6:Con:789.1] || equal(inverse(u),sk_c7) equal(multiply(u,sk_c7),sk_c7)** -> .
% 0.20/0.48  813[6:SpR:780.0,319.0] ||  -> equal(identity,sk_c7)**.
% 0.20/0.48  815[6:Rew:813.0,319.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.20/0.48  819[6:Rew:815.0,790.1] || equal(inverse(u),sk_c7)** equal(u,sk_c7) -> .
% 0.20/0.48  847[6:SpL:770.0,819.0] || equal(sk_c7,sk_c7)* equal(sk_c7,sk_c7)* -> .
% 0.20/0.48  848[6:Obv:847.1] ||  -> .
% 0.20/0.48  849[5:Spt:848.0,2.1,378.0] || equal(multiply(sk_c7,sk_c6),sk_c5)** -> .
% 0.20/0.48  850[5:Spt:848.0,2.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.20/0.48  851[5:MRR:4.1,849.0] ||  -> equal(inverse(sk_c4),sk_c6)**.
% 0.20/0.48  852[5:MRR:3.1,849.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.48  853[5:MRR:5.1,849.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.48  867[5:SpR:852.0,99.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c6)**.
% 0.20/0.48  869[5:Rew:850.0,867.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.48  871[5:SpR:853.0,99.0] ||  -> equal(multiply(inverse(sk_c4),sk_c6),sk_c5)**.
% 0.20/0.48  873[5:Rew:851.0,871.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.20/0.48  879[5:SpR:873.0,99.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c6)**.
% 0.20/0.48  881[5:Rew:357.0,879.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.48  884[5:Rew:881.0,349.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.48  887[5:Rew:881.0,869.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.20/0.48  888[5:Rew:881.0,873.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.48  891[5:Rew:881.0,849.0] || equal(multiply(sk_c7,sk_c7),sk_c5)** -> .
% 0.20/0.48  898[5:Rew:884.0,887.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.20/0.48  904[5:Rew:898.0,888.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.20/0.48  907[5:Rew:904.0,891.0,898.0,891.0] || equal(sk_c7,sk_c7)* -> .
% 0.20/0.48  908[5:Obv:907.0] ||  -> .
% 0.20/0.48  916[4:Spt:908.0,12.1,368.0] || equal(multiply(sk_c5,sk_c6),sk_c7)** -> .
% 0.20/0.48  917[4:Spt:908.0,12.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.20/0.48  919[4:MRR:13.1,916.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.48  931[4:SpR:919.0,99.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c6)**.
% 0.20/0.48  933[4:Rew:917.0,931.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.48  939[4:SpR:933.0,99.0] ||  -> equal(multiply(inverse(sk_c7),sk_c6),sk_c7)**.
% 0.20/0.48  941[4:Rew:359.0,939.0] ||  -> equal(multiply(sk_c5,sk_c6),sk_c7)**.
% 0.20/0.48  942[4:MRR:941.0,916.0] ||  -> .
% 0.20/0.48  943[3:Spt:942.0,7.1,359.0] || equal(inverse(sk_c7),sk_c5)** -> .
% 0.20/0.48  944[3:Spt:942.0,7.0] ||  -> equal(inverse(sk_c3),sk_c7)**.
% 0.20/0.48  945[3:MRR:9.1,943.0] ||  -> equal(inverse(sk_c4),sk_c6)**.
% 0.20/0.48  946[3:MRR:8.0,943.0] ||  -> equal(multiply(sk_c3,sk_c6),sk_c7)**.
% 0.20/0.48  947[3:MRR:10.0,943.0] ||  -> equal(multiply(sk_c4,sk_c5),sk_c6)**.
% 0.20/0.48  953[3:SpR:946.0,99.0] ||  -> equal(multiply(inverse(sk_c3),sk_c7),sk_c6)**.
% 0.20/0.48  955[3:Rew:944.0,953.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c6)**.
% 0.20/0.48  957[3:SpR:947.0,99.0] ||  -> equal(multiply(inverse(sk_c4),sk_c6),sk_c5)**.
% 0.20/0.48  959[3:Rew:945.0,957.0] ||  -> equal(multiply(sk_c6,sk_c6),sk_c5)**.
% 0.20/0.48  961[3:SpR:955.0,99.0] ||  -> equal(multiply(inverse(sk_c7),sk_c6),sk_c7)**.
% 0.20/0.48  967[3:SpR:959.0,99.0] ||  -> equal(multiply(inverse(sk_c6),sk_c5),sk_c6)**.
% 0.20/0.48  969[3:Rew:357.0,967.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.48  970[3:Rew:969.0,349.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.48  974[3:Rew:969.0,955.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c7)**.
% 0.20/0.48  976[3:Rew:969.0,357.0] ||  -> equal(multiply(inverse(sk_c7),sk_c5),sk_c7)**.
% 0.20/0.48  982[3:Rew:969.0,961.0] ||  -> equal(multiply(inverse(sk_c7),sk_c7),sk_c7)**.
% 0.20/0.48  983[3:Rew:970.0,974.0] ||  -> equal(sk_c5,sk_c7)**.
% 0.20/0.48  984[3:Rew:983.0,943.0] || equal(inverse(sk_c7),sk_c7)** -> .
% 0.20/0.48  988[3:Rew:33.0,976.0,983.0,976.0] ||  -> equal(identity,sk_c7)**.
% 0.20/0.48  990[3:Rew:988.0,319.0] ||  -> equal(multiply(u,sk_c7),u)**.
% 0.20/0.48  1001[3:Rew:990.0,982.0] ||  -> equal(inverse(sk_c7),sk_c7)**.
% 0.20/0.48  1002[3:MRR:1001.0,984.0] ||  -> .
% 0.20/0.48  1008[2:Spt:1002.0,6.1,349.0] || equal(multiply(sk_c6,sk_c7),sk_c5)** -> .
% 0.20/0.48  1009[2:Spt:1002.0,6.0] ||  -> equal(inverse(sk_c7),sk_c5)**.
% 0.20/0.48  1010[2:MRR:26.1,1008.0] ||  -> equal(inverse(sk_c1),sk_c7)**.
% 0.20/0.48  1011[2:MRR:21.0,1008.0] ||  -> equal(multiply(sk_c1,sk_c7),sk_c2)**.
% 0.20/0.48  1012[2:MRR:16.0,1008.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c6)**.
% 0.20/0.48  1014[2:MRR:1.0,1008.0] ||  -> equal(multiply(sk_c7,sk_c6),sk_c5)**.
% 0.20/0.48  1020[2:SpR:1011.0,99.0] ||  -> equal(multiply(inverse(sk_c1),sk_c2),sk_c7)**.
% 0.20/0.48  1022[2:Rew:1010.0,1020.0] ||  -> equal(multiply(sk_c7,sk_c2),sk_c7)**.
% 0.20/0.48  1023[2:Rew:1012.0,1022.0] ||  -> equal(sk_c6,sk_c7)**.
% 0.20/0.48  1024[2:Rew:1023.0,1008.0] || equal(multiply(sk_c7,sk_c7),sk_c5)** -> .
% 0.20/0.48  1027[2:Rew:1023.0,1014.0] ||  -> equal(multiply(sk_c7,sk_c7),sk_c5)**.
% 0.20/0.48  1028[2:Rew:1027.0,1024.0] || equal(sk_c5,sk_c5)* -> .
% 0.20/0.48  1029[2:Obv:1028.0] ||  -> .
% 0.20/0.48  % SZS output end Refutation
% 0.20/0.48  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_12 prove_this_13 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_25 prove_this_26 prove_this_27 prove_this_28 prove_this_29 prove_this_30 prove_this_31 left_identity left_inverse associativity
% 0.20/0.48  
%------------------------------------------------------------------------------