%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : GRP265-1 : TPTP v9.2.1. Released v2.5.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% Computer : n010.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 : 300s
% DateTime : Tue May 5 04:25:06 PM UTC 2026
% Result : Unsatisfiable 1.38s 1.77s
% Output : CNFRefutation 1.38s
% Verified :
% SZS Type : Refutation
% Derivation depth : 33
% Number of leaves : 20
% Syntax : Number of clauses : 99 ( 26 unt; 60 nHn; 80 RR)
% Number of literals : 240 ( 239 equ; 86 neg)
% Maximal clause size : 11 ( 2 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 12 ( 12 usr; 10 con; 0-2 aty)
% Number of variables : 67 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(associativity,axiom,
multiply(multiply(X1,X2),X3) = multiply(X1,multiply(X2,X3)),
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-0.ax',associativity) ).
cnf(left_inverse,axiom,
multiply(inverse(X1),X1) = identity,
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-0.ax',left_inverse) ).
cnf(left_identity,axiom,
multiply(identity,X1) = X1,
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-0.ax',left_identity) ).
cnf(prove_this_1,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c3,sk_c9) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_1) ).
cnf(prove_this_2,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c3) = sk_c9 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_2) ).
cnf(prove_this_8,negated_conjecture,
( inverse(sk_c1) = sk_c9
| multiply(sk_c3,sk_c9) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_8) ).
cnf(prove_this_9,negated_conjecture,
( inverse(sk_c1) = sk_c9
| inverse(sk_c3) = sk_c9 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_9) ).
cnf(prove_this_27,negated_conjecture,
( inverse(sk_c2) = sk_c8
| multiply(sk_c5,sk_c7) = sk_c6 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_27) ).
cnf(prove_this_20,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c5,sk_c7) = sk_c6 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_20) ).
cnf(prove_this_21,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| inverse(sk_c5) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_21) ).
cnf(prove_this_26,negated_conjecture,
( inverse(sk_c2) = sk_c8
| multiply(sk_c7,sk_c6) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_26) ).
cnf(prove_this_28,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c5) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_28) ).
cnf(prove_this_29,negated_conjecture,
( multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| multiply(X2,sk_c8) != sk_c7
| inverse(X2) != sk_c8
| multiply(X3,sk_c9) != sk_c8
| inverse(X3) != sk_c9
| multiply(X4,sk_c7) != sk_c8
| inverse(X4) != sk_c7
| multiply(sk_c7,X5) != sk_c8
| multiply(X6,sk_c7) != X5
| inverse(X6) != sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_29) ).
cnf(prove_this_19,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c7,sk_c6) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_19) ).
cnf(prove_this_6,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c5,sk_c7) = sk_c6 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_6) ).
cnf(prove_this_7,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c5) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_7) ).
cnf(prove_this_5,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c7,sk_c6) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_5) ).
cnf(prove_this_3,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c4,sk_c7) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_3) ).
cnf(prove_this_4,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c4) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_4) ).
cnf(prove_this_25,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c4) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_25) ).
cnf(c_0_20,axiom,
multiply(multiply(X1,X2),X3) = multiply(X1,multiply(X2,X3)),
associativity ).
cnf(c_0_21,axiom,
multiply(inverse(X1),X1) = identity,
left_inverse ).
cnf(c_0_22,axiom,
multiply(identity,X1) = X1,
left_identity ).
cnf(c_0_23,plain,
multiply(inverse(X1),multiply(X1,X2)) = X2,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_21]),c_0_22]) ).
cnf(c_0_24,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c3,sk_c9) = sk_c8 ),
prove_this_1 ).
cnf(c_0_25,negated_conjecture,
( multiply(inverse(sk_c3),sk_c8) = sk_c9
| multiply(sk_c1,sk_c9) = sk_c8 ),
inference(spm,[status(thm)],[c_0_23,c_0_24]) ).
cnf(c_0_26,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c3) = sk_c9 ),
prove_this_2 ).
cnf(c_0_27,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_25,c_0_26]) ).
cnf(c_0_28,negated_conjecture,
( multiply(inverse(sk_c1),sk_c8) = sk_c9
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_23,c_0_27]) ).
cnf(c_0_29,negated_conjecture,
( inverse(sk_c1) = sk_c9
| multiply(sk_c3,sk_c9) = sk_c8 ),
prove_this_8 ).
cnf(c_0_30,negated_conjecture,
( multiply(sk_c3,sk_c9) = sk_c8
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_28,c_0_29]) ).
cnf(c_0_31,negated_conjecture,
( multiply(inverse(sk_c3),sk_c8) = sk_c9
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_23,c_0_30]) ).
cnf(c_0_32,negated_conjecture,
( inverse(sk_c1) = sk_c9
| inverse(sk_c3) = sk_c9 ),
prove_this_9 ).
cnf(c_0_33,negated_conjecture,
( multiply(sk_c9,sk_c8) = sk_c9
| inverse(sk_c1) = sk_c9 ),
inference(spm,[status(thm)],[c_0_31,c_0_32]) ).
cnf(c_0_34,negated_conjecture,
( inverse(sk_c2) = sk_c8
| multiply(sk_c5,sk_c7) = sk_c6 ),
prove_this_27 ).
cnf(c_0_35,negated_conjecture,
multiply(sk_c9,sk_c8) = sk_c9,
inference(spm,[status(thm)],[c_0_28,c_0_33]) ).
cnf(c_0_36,negated_conjecture,
( multiply(sk_c5,sk_c7) = sk_c6
| multiply(sk_c8,sk_c2) = identity ),
inference(spm,[status(thm)],[c_0_21,c_0_34]) ).
cnf(c_0_37,negated_conjecture,
identity = sk_c8,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_23,c_0_35]),c_0_21]) ).
cnf(c_0_38,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c5,sk_c7) = sk_c6 ),
prove_this_20 ).
cnf(c_0_39,negated_conjecture,
( multiply(sk_c8,sk_c2) = sk_c8
| multiply(sk_c5,sk_c7) = sk_c6 ),
inference(rw,[status(thm)],[c_0_36,c_0_37]) ).
cnf(c_0_40,plain,
multiply(sk_c8,X1) = X1,
inference(rw,[status(thm)],[c_0_22,c_0_37]) ).
cnf(c_0_41,negated_conjecture,
( multiply(inverse(sk_c5),sk_c6) = sk_c7
| multiply(sk_c2,sk_c8) = sk_c7 ),
inference(spm,[status(thm)],[c_0_23,c_0_38]) ).
cnf(c_0_42,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| inverse(sk_c5) = sk_c7 ),
prove_this_21 ).
cnf(c_0_43,negated_conjecture,
( multiply(sk_c5,sk_c7) = sk_c6
| sk_c2 = sk_c8 ),
inference(rw,[status(thm)],[c_0_39,c_0_40]) ).
cnf(c_0_44,negated_conjecture,
( inverse(sk_c2) = sk_c8
| multiply(sk_c7,sk_c6) = sk_c8 ),
prove_this_26 ).
cnf(c_0_45,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c7,sk_c6) = sk_c7 ),
inference(spm,[status(thm)],[c_0_41,c_0_42]) ).
cnf(c_0_46,negated_conjecture,
( multiply(inverse(sk_c5),sk_c6) = sk_c7
| sk_c2 = sk_c8 ),
inference(spm,[status(thm)],[c_0_23,c_0_43]) ).
cnf(c_0_47,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c5) = sk_c7 ),
prove_this_28 ).
cnf(c_0_48,negated_conjecture,
( multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| multiply(X2,sk_c8) != sk_c7
| inverse(X2) != sk_c8
| multiply(X3,sk_c9) != sk_c8
| inverse(X3) != sk_c9
| multiply(X4,sk_c7) != sk_c8
| inverse(X4) != sk_c7
| multiply(sk_c7,X5) != sk_c8
| multiply(X6,sk_c7) != X5
| inverse(X6) != sk_c7 ),
prove_this_29 ).
cnf(c_0_49,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c7,sk_c6) = sk_c8 ),
prove_this_19 ).
cnf(c_0_50,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c8
| multiply(sk_c8,sk_c2) = identity ),
inference(spm,[status(thm)],[c_0_21,c_0_44]) ).
cnf(c_0_51,negated_conjecture,
( multiply(inverse(sk_c2),sk_c7) = sk_c8
| multiply(sk_c7,sk_c6) = sk_c7 ),
inference(spm,[status(thm)],[c_0_23,c_0_45]) ).
cnf(c_0_52,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c7
| inverse(sk_c2) = sk_c8
| sk_c2 = sk_c8 ),
inference(spm,[status(thm)],[c_0_46,c_0_47]) ).
cnf(c_0_53,negated_conjecture,
( multiply(sk_c7,multiply(X1,sk_c7)) != sk_c8
| multiply(X2,sk_c7) != sk_c8
| multiply(X3,sk_c9) != sk_c8
| multiply(X4,sk_c8) != sk_c7
| multiply(X5,sk_c9) != sk_c8
| inverse(X1) != sk_c7
| inverse(X2) != sk_c7
| inverse(X3) != sk_c9
| inverse(X4) != sk_c8
| inverse(X5) != sk_c9 ),
inference(er,[status(thm)],[c_0_48]) ).
cnf(c_0_54,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c5,sk_c7) = sk_c6 ),
prove_this_6 ).
cnf(c_0_55,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c5) = sk_c7 ),
prove_this_7 ).
cnf(c_0_56,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c7,sk_c6) = sk_c8 ),
prove_this_5 ).
cnf(c_0_57,negated_conjecture,
( multiply(inverse(sk_c2),sk_c7) = sk_c8
| multiply(sk_c7,sk_c6) = sk_c8 ),
inference(spm,[status(thm)],[c_0_23,c_0_49]) ).
cnf(c_0_58,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c8
| sk_c2 = sk_c8 ),
inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_50,c_0_37]),c_0_40]) ).
cnf(c_0_59,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c7
| sk_c2 = sk_c8
| sk_c7 = sk_c8 ),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_51,c_0_52]),c_0_40]) ).
cnf(c_0_60,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c7) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c8) != sk_c7
| multiply(X4,sk_c9) != sk_c8
| inverse(X1) != sk_c7
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c9 ),
inference(csr,[status(thm)],[inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_53,c_0_54]),c_0_55]),c_0_56]) ).
cnf(c_0_61,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c4,sk_c7) = sk_c8 ),
prove_this_3 ).
cnf(c_0_62,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c4) = sk_c7 ),
prove_this_4 ).
cnf(c_0_63,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c8
| multiply(sk_c8,sk_c7) = sk_c8 ),
inference(spm,[status(thm)],[c_0_57,c_0_44]) ).
cnf(c_0_64,negated_conjecture,
( sk_c2 = sk_c8
| sk_c7 = sk_c8 ),
inference(spm,[status(thm)],[c_0_58,c_0_59]) ).
cnf(c_0_65,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c9) != sk_c8
| multiply(X2,sk_c8) != sk_c7
| multiply(X3,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| inverse(X2) != sk_c8
| inverse(X3) != sk_c9 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_60,c_0_61]),c_0_62]) ).
cnf(c_0_66,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c8
| sk_c7 = sk_c8 ),
inference(rw,[status(thm)],[c_0_63,c_0_40]) ).
cnf(c_0_67,negated_conjecture,
( multiply(sk_c7,sk_c6) = sk_c7
| sk_c7 = sk_c8 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_45,c_0_64]),c_0_40])]) ).
cnf(c_0_68,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c8) != sk_c7
| multiply(X2,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_65,c_0_24]),c_0_26]) ).
cnf(c_0_69,negated_conjecture,
sk_c7 = sk_c8,
inference(spm,[status(thm)],[c_0_66,c_0_67]) ).
cnf(c_0_70,negated_conjecture,
( multiply(sk_c4,multiply(sk_c7,X1)) = multiply(sk_c8,X1)
| multiply(sk_c1,sk_c9) = sk_c8 ),
inference(spm,[status(thm)],[c_0_20,c_0_61]) ).
cnf(c_0_71,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c8) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9 ),
inference(rw,[status(thm)],[c_0_68,c_0_69]) ).
cnf(c_0_72,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c4,X1) = X1 ),
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_70,c_0_40]),c_0_69]),c_0_40]) ).
cnf(c_0_73,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c4) = sk_c7 ),
prove_this_25 ).
cnf(c_0_74,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c9) != sk_c8
| inverse(sk_c4) != sk_c8
| inverse(X1) != sk_c9 ),
inference(spm,[status(thm)],[c_0_71,c_0_72]) ).
cnf(c_0_75,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c4) = sk_c8 ),
inference(rw,[status(thm)],[c_0_73,c_0_69]) ).
cnf(c_0_76,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c2) = sk_c8
| multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9 ),
inference(spm,[status(thm)],[c_0_74,c_0_75]) ).
cnf(c_0_77,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c2) = sk_c8 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_76,c_0_24]),c_0_26]) ).
cnf(c_0_78,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c2,X1) = X1 ),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_23,c_0_77]),c_0_40]) ).
cnf(c_0_79,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_71,c_0_78]),c_0_77]) ).
cnf(c_0_80,negated_conjecture,
multiply(sk_c1,sk_c9) = sk_c8,
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_79,c_0_26]),c_0_24]) ).
cnf(c_0_81,negated_conjecture,
multiply(inverse(sk_c1),sk_c8) = sk_c9,
inference(spm,[status(thm)],[c_0_23,c_0_80]) ).
cnf(c_0_82,negated_conjecture,
multiply(inverse(inverse(sk_c1)),sk_c9) = sk_c8,
inference(spm,[status(thm)],[c_0_23,c_0_81]) ).
cnf(c_0_83,negated_conjecture,
multiply(inverse(sk_c1),X1) = multiply(sk_c9,X1),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_81]),c_0_40]) ).
cnf(c_0_84,plain,
multiply(inverse(X1),X1) = sk_c8,
inference(rw,[status(thm)],[c_0_21,c_0_37]) ).
cnf(c_0_85,plain,
multiply(inverse(inverse(X1)),X2) = multiply(X1,X2),
inference(spm,[status(thm)],[c_0_23,c_0_23]) ).
cnf(c_0_86,negated_conjecture,
multiply(inverse(inverse(sk_c1)),multiply(sk_c9,X1)) = X1,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_82]),c_0_40]) ).
cnf(c_0_87,negated_conjecture,
multiply(sk_c9,multiply(sk_c1,X1)) = X1,
inference(spm,[status(thm)],[c_0_23,c_0_83]) ).
cnf(c_0_88,negated_conjecture,
( multiply(sk_c7,sk_c7) != sk_c8
| multiply(X1,sk_c7) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c8) != sk_c7
| multiply(X4,sk_c9) != sk_c8
| inverse(identity) != sk_c7
| inverse(X1) != sk_c7
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c9 ),
inference(spm,[status(thm)],[c_0_53,c_0_22]) ).
cnf(c_0_89,plain,
multiply(inverse(sk_c8),X1) = X1,
inference(spm,[status(thm)],[c_0_23,c_0_40]) ).
cnf(c_0_90,plain,
multiply(X1,sk_c8) = X1,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_23,c_0_84]),c_0_85]) ).
cnf(c_0_91,negated_conjecture,
multiply(inverse(inverse(sk_c1)),X1) = multiply(sk_c1,X1),
inference(spm,[status(thm)],[c_0_86,c_0_87]) ).
cnf(c_0_92,negated_conjecture,
( multiply(X1,sk_c8) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c8) != sk_c8
| multiply(X4,sk_c9) != sk_c8
| inverse(sk_c8) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c9 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_88,c_0_37]),c_0_69]),c_0_69]),c_0_40]),c_0_69]),c_0_69]),c_0_69]),c_0_69])]) ).
cnf(c_0_93,plain,
inverse(sk_c8) = sk_c8,
inference(spm,[status(thm)],[c_0_89,c_0_90]) ).
cnf(c_0_94,negated_conjecture,
multiply(sk_c1,inverse(sk_c1)) = sk_c8,
inference(spm,[status(thm)],[c_0_84,c_0_91]) ).
cnf(c_0_95,negated_conjecture,
( multiply(X1,sk_c9) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| inverse(X2) != sk_c9 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(er,[status(thm)],[inference(er,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_92,c_0_90]),c_0_90])])]),c_0_93])]) ).
cnf(c_0_96,negated_conjecture,
inverse(sk_c1) = sk_c9,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_23,c_0_94]),c_0_83]),c_0_35]) ).
cnf(c_0_97,negated_conjecture,
( multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_95,c_0_80]),c_0_96])]) ).
cnf(c_0_98,negated_conjecture,
$false,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_97,c_0_96]),c_0_80])]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : GRP265-1 : TPTP v9.2.1. Released v2.5.0.
% 0.00/0.12 % Command : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.15/0.33 % Computer : n010.cluster.edu
% 0.15/0.33 % Model : x86_64 x86_64
% 0.15/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.33 % Memory : 8042.1875MB
% 0.15/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.15/0.33 % CPULimit : 300
% 0.15/0.33 % WCLimit : 300
% 0.15/0.33 % DateTime : Mon May 4 18:30:51 EDT 2026
% 0.15/0.33 % CPUTime :
% 0.15/0.34 % start to proof: theBenchmark
% 1.38/1.77 % Version : CSE_E---1.7
% 1.38/1.77 % Problem : theBenchmark.p
% 1.38/1.77 % SZS status Unsatisfiable for theBenchmark.p
% 1.38/1.77 % SZS output start CNFRefutation
% See solution above
% 1.38/1.77 % Total time : 1.373s
%------------------------------------------------------------------------------