%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : GRP250-1 : 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 : n029.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 04:24:56 PM UTC 2026
% Result : Unsatisfiable 1.65s 1.83s
% Output : CNFRefutation 1.65s
% Verified :
% SZS Type : Refutation
% Derivation depth : 23
% Number of leaves : 16
% Syntax : Number of clauses : 74 ( 23 unt; 36 nHn; 60 RR)
% Number of literals : 213 ( 212 equ; 110 neg)
% Maximal clause size : 12 ( 2 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 11 ( 11 usr; 9 con; 0-2 aty)
% Number of variables : 71 ( 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_15,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c5,sk_c8) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_15) ).
cnf(prove_this_1,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c4,sk_c9) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_1) ).
cnf(prove_this_21,negated_conjecture,
( inverse(sk_c2) = sk_c8
| multiply(sk_c5,sk_c8) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_21) ).
cnf(prove_this_2,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c4) = sk_c9 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_2) ).
cnf(prove_this_16,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| inverse(sk_c5) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_16) ).
cnf(prove_this_7,negated_conjecture,
( inverse(sk_c1) = sk_c9
| multiply(sk_c4,sk_c9) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_7) ).
cnf(prove_this_22,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c5) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_22) ).
cnf(prove_this_37,negated_conjecture,
( multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| multiply(X2,sk_c8) != sk_c7
| inverse(X2) != sk_c8
| inverse(X3) != sk_c8
| multiply(X3,sk_c7) != sk_c8
| multiply(X4,sk_c9) != sk_c8
| inverse(X4) != sk_c9
| multiply(X5,sk_c8) != sk_c7
| inverse(X5) != sk_c8
| inverse(X6) != sk_c7
| multiply(X6,sk_c8) != sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_37) ).
cnf(prove_this_6,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c6,sk_c8) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_6) ).
cnf(prove_this_5,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c6) = sk_c7 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_5) ).
cnf(prove_this_8,negated_conjecture,
( inverse(sk_c1) = sk_c9
| inverse(sk_c4) = sk_c9 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_8) ).
cnf(prove_this_3,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c5,sk_c8) = sk_c7 ),
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_c5) = sk_c8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this_4) ).
cnf(c_0_16,axiom,
multiply(multiply(X1,X2),X3) = multiply(X1,multiply(X2,X3)),
associativity ).
cnf(c_0_17,axiom,
multiply(inverse(X1),X1) = identity,
left_inverse ).
cnf(c_0_18,axiom,
multiply(identity,X1) = X1,
left_identity ).
cnf(c_0_19,plain,
multiply(inverse(X1),multiply(X1,X2)) = X2,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_16,c_0_17]),c_0_18]) ).
cnf(c_0_20,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c5,sk_c8) = sk_c7 ),
prove_this_15 ).
cnf(c_0_21,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c4,sk_c9) = sk_c8 ),
prove_this_1 ).
cnf(c_0_22,negated_conjecture,
( multiply(inverse(sk_c2),sk_c7) = sk_c8
| multiply(sk_c5,sk_c8) = sk_c7 ),
inference(spm,[status(thm)],[c_0_19,c_0_20]) ).
cnf(c_0_23,negated_conjecture,
( inverse(sk_c2) = sk_c8
| multiply(sk_c5,sk_c8) = sk_c7 ),
prove_this_21 ).
cnf(c_0_24,negated_conjecture,
( multiply(inverse(sk_c4),sk_c8) = sk_c9
| multiply(sk_c1,sk_c9) = sk_c8 ),
inference(spm,[status(thm)],[c_0_19,c_0_21]) ).
cnf(c_0_25,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c4) = sk_c9 ),
prove_this_2 ).
cnf(c_0_26,negated_conjecture,
( multiply(sk_c5,sk_c8) = sk_c7
| multiply(sk_c8,sk_c7) = sk_c8 ),
inference(spm,[status(thm)],[c_0_22,c_0_23]) ).
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_24,c_0_25]) ).
cnf(c_0_28,negated_conjecture,
( multiply(inverse(sk_c5),sk_c7) = sk_c8
| multiply(sk_c8,sk_c7) = sk_c8 ),
inference(spm,[status(thm)],[c_0_19,c_0_26]) ).
cnf(c_0_29,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| inverse(sk_c5) = sk_c8 ),
prove_this_16 ).
cnf(c_0_30,negated_conjecture,
( multiply(inverse(sk_c1),sk_c8) = sk_c9
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_19,c_0_27]) ).
cnf(c_0_31,negated_conjecture,
( inverse(sk_c1) = sk_c9
| multiply(sk_c4,sk_c9) = sk_c8 ),
prove_this_7 ).
cnf(c_0_32,negated_conjecture,
( multiply(sk_c2,sk_c8) = sk_c7
| multiply(sk_c8,sk_c7) = sk_c8 ),
inference(spm,[status(thm)],[c_0_28,c_0_29]) ).
cnf(c_0_33,negated_conjecture,
( multiply(sk_c4,sk_c9) = sk_c8
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_30,c_0_31]) ).
cnf(c_0_34,negated_conjecture,
( multiply(inverse(sk_c2),sk_c7) = sk_c8
| multiply(sk_c8,sk_c7) = sk_c8 ),
inference(spm,[status(thm)],[c_0_19,c_0_32]) ).
cnf(c_0_35,negated_conjecture,
( inverse(sk_c2) = sk_c8
| inverse(sk_c5) = sk_c8 ),
prove_this_22 ).
cnf(c_0_36,negated_conjecture,
( multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| multiply(X2,sk_c8) != sk_c7
| inverse(X2) != sk_c8
| inverse(X3) != sk_c8
| multiply(X3,sk_c7) != sk_c8
| multiply(X4,sk_c9) != sk_c8
| inverse(X4) != sk_c9
| multiply(X5,sk_c8) != sk_c7
| inverse(X5) != sk_c8
| inverse(X6) != sk_c7
| multiply(X6,sk_c8) != sk_c7 ),
prove_this_37 ).
cnf(c_0_37,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c6,sk_c8) = sk_c7 ),
prove_this_6 ).
cnf(c_0_38,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c6) = sk_c7 ),
prove_this_5 ).
cnf(c_0_39,negated_conjecture,
( multiply(inverse(sk_c4),sk_c8) = sk_c9
| multiply(sk_c9,sk_c8) = sk_c9 ),
inference(spm,[status(thm)],[c_0_19,c_0_33]) ).
cnf(c_0_40,negated_conjecture,
( inverse(sk_c1) = sk_c9
| inverse(sk_c4) = sk_c9 ),
prove_this_8 ).
cnf(c_0_41,negated_conjecture,
( multiply(sk_c8,sk_c7) = sk_c8
| inverse(sk_c5) = sk_c8 ),
inference(spm,[status(thm)],[c_0_34,c_0_35]) ).
cnf(c_0_42,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c8) != sk_c7
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c7) != sk_c8
| multiply(X4,sk_c8) != sk_c7
| multiply(X5,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c8
| inverse(X5) != sk_c9 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_36,c_0_37]),c_0_38]) ).
cnf(c_0_43,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(sk_c5,sk_c8) = sk_c7 ),
prove_this_3 ).
cnf(c_0_44,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(sk_c5) = sk_c8 ),
prove_this_4 ).
cnf(c_0_45,negated_conjecture,
( multiply(sk_c9,sk_c8) = sk_c9
| inverse(sk_c1) = sk_c9 ),
inference(spm,[status(thm)],[c_0_39,c_0_40]) ).
cnf(c_0_46,negated_conjecture,
multiply(sk_c8,sk_c7) = sk_c8,
inference(spm,[status(thm)],[c_0_28,c_0_41]) ).
cnf(c_0_47,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c9) != sk_c8
| multiply(X2,sk_c7) != sk_c8
| multiply(X3,sk_c8) != sk_c7
| multiply(X4,sk_c9) != sk_c8
| inverse(X1) != sk_c9
| inverse(X2) != sk_c8
| inverse(X3) != sk_c8
| inverse(X4) != sk_c9 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_42,c_0_43]),c_0_44]) ).
cnf(c_0_48,negated_conjecture,
multiply(sk_c9,sk_c8) = sk_c9,
inference(spm,[status(thm)],[c_0_30,c_0_45]) ).
cnf(c_0_49,negated_conjecture,
identity = sk_c7,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_46]),c_0_17]) ).
cnf(c_0_50,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c7) != sk_c8
| multiply(X2,sk_c8) != sk_c7
| multiply(X3,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c8
| inverse(X3) != sk_c9 ),
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_47,c_0_21]),c_0_25]) ).
cnf(c_0_51,negated_conjecture,
sk_c7 = sk_c8,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_48]),c_0_17]),c_0_49]) ).
cnf(c_0_52,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(inverse(sk_c7)) != sk_c8
| multiply(X1,sk_c8) != sk_c7
| multiply(X2,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| identity != sk_c8 ),
inference(spm,[status(thm)],[c_0_50,c_0_17]) ).
cnf(c_0_53,plain,
multiply(inverse(X1),X1) = sk_c8,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_17,c_0_49]),c_0_51]) ).
cnf(c_0_54,plain,
multiply(inverse(inverse(X1)),X2) = multiply(X1,X2),
inference(spm,[status(thm)],[c_0_19,c_0_19]) ).
cnf(c_0_55,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(inverse(sk_c7)) != sk_c8
| multiply(X1,sk_c8) != sk_c7
| multiply(X2,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| sk_c7 != sk_c8 ),
inference(rw,[status(thm)],[c_0_52,c_0_49]) ).
cnf(c_0_56,plain,
multiply(sk_c8,X1) = X1,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_18,c_0_49]),c_0_51]) ).
cnf(c_0_57,plain,
multiply(X1,inverse(X1)) = sk_c8,
inference(spm,[status(thm)],[c_0_53,c_0_54]) ).
cnf(c_0_58,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| inverse(inverse(sk_c8)) != sk_c8
| multiply(X1,sk_c8) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_55,c_0_51]),c_0_51]),c_0_51])]) ).
cnf(c_0_59,plain,
inverse(sk_c8) = sk_c8,
inference(spm,[status(thm)],[c_0_56,c_0_57]) ).
cnf(c_0_60,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(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_58,c_0_59]),c_0_59])]) ).
cnf(c_0_61,negated_conjecture,
( multiply(sk_c1,sk_c9) = sk_c8
| multiply(X1,sk_c9) != sk_c8
| inverse(X1) != sk_c9 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_60,c_0_56]),c_0_59])]) ).
cnf(c_0_62,negated_conjecture,
multiply(sk_c1,sk_c9) = sk_c8,
inference(csr,[status(thm)],[inference(spm,[status(thm)],[c_0_61,c_0_25]),c_0_21]) ).
cnf(c_0_63,negated_conjecture,
( inverse(inverse(sk_c8)) != sk_c7
| multiply(X1,sk_c8) != sk_c7
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c7) != sk_c8
| multiply(X4,sk_c8) != sk_c7
| multiply(X5,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c8
| inverse(X5) != sk_c9
| identity != sk_c7 ),
inference(spm,[status(thm)],[c_0_36,c_0_17]) ).
cnf(c_0_64,negated_conjecture,
multiply(inverse(sk_c1),sk_c8) = sk_c9,
inference(spm,[status(thm)],[c_0_19,c_0_62]) ).
cnf(c_0_65,negated_conjecture,
( inverse(inverse(sk_c8)) != sk_c8
| multiply(X1,sk_c8) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c8) != sk_c8
| multiply(X4,sk_c8) != sk_c8
| multiply(X5,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c8
| inverse(X5) != sk_c9 ),
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_63,c_0_49])]),c_0_51]),c_0_51]),c_0_51]),c_0_51]) ).
cnf(c_0_66,negated_conjecture,
multiply(inverse(sk_c1),X1) = multiply(sk_c9,X1),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_16,c_0_64]),c_0_56]) ).
cnf(c_0_67,negated_conjecture,
( multiply(X1,sk_c8) != sk_c8
| multiply(X2,sk_c9) != sk_c8
| multiply(X3,sk_c8) != sk_c8
| multiply(X4,sk_c8) != sk_c8
| multiply(X5,sk_c9) != sk_c8
| inverse(X1) != sk_c8
| inverse(X2) != sk_c9
| inverse(X3) != sk_c8
| inverse(X4) != sk_c8
| inverse(X5) != sk_c9 ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_65,c_0_59]),c_0_59])]) ).
cnf(c_0_68,plain,
multiply(X1,sk_c8) = X1,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_53]),c_0_54]) ).
cnf(c_0_69,negated_conjecture,
multiply(sk_c9,multiply(sk_c1,X1)) = X1,
inference(spm,[status(thm)],[c_0_19,c_0_66]) ).
cnf(c_0_70,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(er,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_67,c_0_68]),c_0_68]),c_0_68])])])]),c_0_59])]) ).
cnf(c_0_71,negated_conjecture,
inverse(sk_c1) = sk_c9,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_69,c_0_57]),c_0_48]) ).
cnf(c_0_72,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_70,c_0_62]),c_0_71])]) ).
cnf(c_0_73,negated_conjecture,
$false,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_72,c_0_71]),c_0_62])]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : GRP250-1 : 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 : n029.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 18:30:14 EDT 2026
% 0.15/0.33 % CPUTime :
% 0.15/0.34 % start to proof: theBenchmark
% 1.65/1.83 % Version : CSE_E---1.7
% 1.65/1.83 % Problem : theBenchmark.p
% 1.65/1.83 % SZS status Unsatisfiable for theBenchmark.p
% 1.65/1.83 % SZS output start CNFRefutation
% See solution above
% 1.65/1.83 % Total time : 1.371s
%------------------------------------------------------------------------------