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E---3.5.1.UNS-CRf.s

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%------------------------------------------------------------------------------
% File     : E---3.5.1
% Problem  : GRP239-1 : TPTP v9.3.1. Released v2.5.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_E /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM

% Computer : n018.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Thu Sep 24 12:39:03 PM UTC 2026

% Result   : Unsatisfiable 28.73s 4.61s
% Output   : CNFRefutation 28.73s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   27
%            Number of leaves      :   16
% Syntax   : Number of clauses     :   94 (  24 unt;  63 nHn;  74 RR)
%            Number of literals    :  222 ( 221 equ;  71 neg)
%            Maximal clause size   :   13 (   2 avg)
%            Maximal term depth    :    5 (   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   :   64 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(associativity,axiom,
    multiply(multiply(X1,X2),X3) = multiply(X1,multiply(X2,X3)),
    file('/export/starexec/sandbox2/benchmark/Axioms/GRP004-0.ax',associativity) ).

cnf(left_inverse,axiom,
    multiply(inverse(X1),X1) = identity,
    file('/export/starexec/sandbox2/benchmark/Axioms/GRP004-0.ax',left_inverse) ).

cnf(left_identity,axiom,
    multiply(identity,X1) = X1,
    file('/export/starexec/sandbox2/benchmark/Axioms/GRP004-0.ax',left_identity) ).

cnf(prove_this_39,negated_conjecture,
    ( inverse(sk_c5) = sk_c8
    | inverse(sk_c2) = sk_c9 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_39) ).

cnf(prove_this_16,negated_conjecture,
    ( multiply(sk_c4,sk_c8) = sk_c9
    | multiply(sk_c1,sk_c8) = sk_c9 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_16) ).

cnf(prove_this_4,negated_conjecture,
    ( inverse(sk_c5) = sk_c8
    | inverse(sk_c9) = sk_c8 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_4) ).

cnf(prove_this_15,negated_conjecture,
    ( inverse(sk_c4) = sk_c9
    | multiply(sk_c1,sk_c8) = sk_c9 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_15) ).

cnf(prove_this_38,negated_conjecture,
    ( multiply(sk_c5,sk_c8) = sk_c9
    | inverse(sk_c2) = sk_c9 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_38) ).

cnf(prove_this_3,negated_conjecture,
    ( multiply(sk_c5,sk_c8) = sk_c9
    | inverse(sk_c9) = sk_c8 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_3) ).

cnf(prove_this_9,negated_conjecture,
    ( multiply(sk_c4,sk_c8) = sk_c9
    | inverse(sk_c1) = sk_c9 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_9) ).

cnf(prove_this_26,negated_conjecture,
    ( multiply(sk_c6,sk_c7) = sk_c8
    | multiply(sk_c9,sk_c3) = sk_c8 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_26) ).

cnf(prove_this_8,negated_conjecture,
    ( inverse(sk_c4) = sk_c9
    | inverse(sk_c1) = sk_c9 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_8) ).

cnf(prove_this_27,negated_conjecture,
    ( inverse(sk_c6) = sk_c7
    | multiply(sk_c9,sk_c3) = sk_c8 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_27) ).

cnf(prove_this_31,negated_conjecture,
    ( multiply(sk_c5,sk_c8) = sk_c9
    | multiply(sk_c2,sk_c9) = sk_c3 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_31) ).

cnf(prove_this_32,negated_conjecture,
    ( inverse(sk_c5) = sk_c8
    | multiply(sk_c2,sk_c9) = sk_c3 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_32) ).

cnf(prove_this_43,negated_conjecture,
    ( multiply(X7,sk_c9) != sk_c8
    | inverse(X6) != X7
    | multiply(X6,X7) != sk_c8
    | inverse(X5) != sk_c8
    | multiply(X5,sk_c8) != sk_c9
    | multiply(X4,sk_c8) != sk_c9
    | inverse(X4) != sk_c9
    | inverse(X3) != sk_c9
    | multiply(X3,sk_c9) != X2
    | multiply(sk_c9,X2) != sk_c8
    | multiply(X1,sk_c8) != sk_c9
    | inverse(X1) != sk_c9
    | inverse(sk_c9) != sk_c8 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_43) ).

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,plain,
    multiply(inverse(inverse(X1)),X2) = multiply(X1,X2),
    inference(spm,[status(thm)],[c_0_19,c_0_19]) ).

cnf(c_0_21,plain,
    multiply(X1,identity) = X1,
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_17]),c_0_20]) ).

cnf(c_0_22,negated_conjecture,
    ( inverse(sk_c5) = sk_c8
    | inverse(sk_c2) = sk_c9 ),
    prove_this_39 ).

cnf(c_0_23,negated_conjecture,
    ( multiply(sk_c4,sk_c8) = sk_c9
    | multiply(sk_c1,sk_c8) = sk_c9 ),
    prove_this_16 ).

cnf(c_0_24,negated_conjecture,
    ( inverse(sk_c5) = sk_c8
    | inverse(sk_c9) = sk_c8 ),
    prove_this_4 ).

cnf(c_0_25,plain,
    inverse(inverse(X1)) = X1,
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_21]),c_0_21]) ).

cnf(c_0_26,negated_conjecture,
    ( inverse(sk_c2) = sk_c9
    | multiply(sk_c8,sk_c5) = identity ),
    inference(spm,[status(thm)],[c_0_17,c_0_22]) ).

cnf(c_0_27,negated_conjecture,
    ( multiply(sk_c1,sk_c8) = sk_c9
    | multiply(inverse(sk_c4),sk_c9) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_19,c_0_23]) ).

cnf(c_0_28,negated_conjecture,
    ( inverse(sk_c4) = sk_c9
    | multiply(sk_c1,sk_c8) = sk_c9 ),
    prove_this_15 ).

cnf(c_0_29,negated_conjecture,
    ( multiply(sk_c5,sk_c8) = sk_c9
    | inverse(sk_c2) = sk_c9 ),
    prove_this_38 ).

cnf(c_0_30,negated_conjecture,
    ( inverse(sk_c9) = sk_c8
    | multiply(sk_c8,sk_c5) = identity ),
    inference(spm,[status(thm)],[c_0_17,c_0_24]) ).

cnf(c_0_31,negated_conjecture,
    ( inverse(sk_c9) = sk_c2
    | multiply(sk_c8,sk_c5) = identity ),
    inference(spm,[status(thm)],[c_0_25,c_0_26]) ).

cnf(c_0_32,negated_conjecture,
    ( multiply(sk_c9,sk_c9) = sk_c8
    | multiply(sk_c1,sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_27,c_0_28]) ).

cnf(c_0_33,negated_conjecture,
    ( multiply(sk_c5,sk_c8) = sk_c9
    | inverse(sk_c9) = sk_c8 ),
    prove_this_3 ).

cnf(c_0_34,negated_conjecture,
    ( inverse(sk_c9) = sk_c2
    | multiply(sk_c5,sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_25,c_0_29]) ).

cnf(c_0_35,negated_conjecture,
    ( sk_c2 = sk_c8
    | multiply(sk_c8,sk_c5) = identity ),
    inference(spm,[status(thm)],[c_0_30,c_0_31]) ).

cnf(c_0_36,negated_conjecture,
    ( multiply(sk_c9,sk_c9) = sk_c8
    | multiply(inverse(sk_c1),sk_c9) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_19,c_0_32]) ).

cnf(c_0_37,negated_conjecture,
    ( multiply(sk_c4,sk_c8) = sk_c9
    | inverse(sk_c1) = sk_c9 ),
    prove_this_9 ).

cnf(c_0_38,negated_conjecture,
    ( sk_c2 = sk_c8
    | multiply(sk_c5,sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_33,c_0_34]) ).

cnf(c_0_39,negated_conjecture,
    ( sk_c2 = sk_c8
    | inverse(sk_c8) = sk_c5 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_35]),c_0_21]) ).

cnf(c_0_40,negated_conjecture,
    ( multiply(sk_c9,sk_c9) = sk_c8
    | multiply(sk_c4,sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_36,c_0_37]) ).

cnf(c_0_41,negated_conjecture,
    ( sk_c2 = sk_c8
    | multiply(inverse(sk_c5),sk_c9) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_19,c_0_38]) ).

cnf(c_0_42,negated_conjecture,
    ( sk_c2 = sk_c8
    | inverse(sk_c5) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_25,c_0_39]) ).

cnf(c_0_43,negated_conjecture,
    ( multiply(sk_c6,sk_c7) = sk_c8
    | multiply(sk_c9,sk_c3) = sk_c8 ),
    prove_this_26 ).

cnf(c_0_44,negated_conjecture,
    ( multiply(sk_c9,sk_c9) = sk_c8
    | multiply(inverse(sk_c4),sk_c9) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_19,c_0_40]) ).

cnf(c_0_45,negated_conjecture,
    ( inverse(sk_c4) = sk_c9
    | inverse(sk_c1) = sk_c9 ),
    prove_this_8 ).

cnf(c_0_46,negated_conjecture,
    ( sk_c2 = sk_c8
    | multiply(sk_c8,sk_c9) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_41,c_0_42]) ).

cnf(c_0_47,negated_conjecture,
    ( multiply(sk_c9,sk_c3) = sk_c8
    | multiply(inverse(sk_c6),sk_c8) = sk_c7 ),
    inference(spm,[status(thm)],[c_0_19,c_0_43]) ).

cnf(c_0_48,negated_conjecture,
    ( inverse(sk_c6) = sk_c7
    | multiply(sk_c9,sk_c3) = sk_c8 ),
    prove_this_27 ).

cnf(c_0_49,negated_conjecture,
    ( inverse(sk_c1) = sk_c9
    | multiply(sk_c9,sk_c9) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_44,c_0_45]) ).

cnf(c_0_50,negated_conjecture,
    ( multiply(sk_c5,sk_c8) = sk_c9
    | multiply(sk_c2,sk_c9) = sk_c3 ),
    prove_this_31 ).

cnf(c_0_51,negated_conjecture,
    ( inverse(sk_c5) = sk_c8
    | multiply(sk_c2,sk_c9) = sk_c3 ),
    prove_this_32 ).

cnf(c_0_52,plain,
    inverse(identity) = identity,
    inference(spm,[status(thm)],[c_0_17,c_0_21]) ).

cnf(c_0_53,negated_conjecture,
    ( identity = sk_c9
    | sk_c2 = sk_c8 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_46]),c_0_17]) ).

cnf(c_0_54,negated_conjecture,
    ( multiply(sk_c7,sk_c8) = sk_c7
    | multiply(sk_c9,sk_c3) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_47,c_0_48]) ).

cnf(c_0_55,negated_conjecture,
    multiply(sk_c9,sk_c9) = sk_c8,
    inference(spm,[status(thm)],[c_0_36,c_0_49]) ).

cnf(c_0_56,negated_conjecture,
    ( multiply(sk_c2,sk_c9) = sk_c3
    | multiply(sk_c5,multiply(sk_c8,X1)) = multiply(sk_c9,X1) ),
    inference(spm,[status(thm)],[c_0_16,c_0_50]) ).

cnf(c_0_57,negated_conjecture,
    ( multiply(sk_c2,sk_c9) = sk_c3
    | multiply(sk_c8,multiply(sk_c5,X1)) = X1 ),
    inference(spm,[status(thm)],[c_0_19,c_0_51]) ).

cnf(c_0_58,negated_conjecture,
    ( sk_c2 = sk_c8
    | inverse(sk_c9) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_52,c_0_53]) ).

cnf(c_0_59,negated_conjecture,
    ( identity = sk_c8
    | multiply(sk_c9,sk_c3) = sk_c8 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_54]),c_0_17]) ).

cnf(c_0_60,negated_conjecture,
    multiply(inverse(sk_c9),sk_c8) = sk_c9,
    inference(spm,[status(thm)],[c_0_19,c_0_55]) ).

cnf(c_0_61,negated_conjecture,
    ( multiply(sk_c2,sk_c9) = sk_c3
    | multiply(sk_c9,multiply(sk_c5,X1)) = multiply(sk_c5,X1) ),
    inference(spm,[status(thm)],[c_0_56,c_0_57]) ).

cnf(c_0_62,negated_conjecture,
    ( identity = sk_c8
    | sk_c2 = sk_c8 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_17,c_0_58]),c_0_55]) ).

cnf(c_0_63,negated_conjecture,
    multiply(sk_c9,multiply(sk_c9,X1)) = multiply(sk_c8,X1),
    inference(spm,[status(thm)],[c_0_16,c_0_55]) ).

cnf(c_0_64,plain,
    multiply(inverse(multiply(X1,X2)),multiply(X1,multiply(X2,X3))) = X3,
    inference(spm,[status(thm)],[c_0_19,c_0_16]) ).

cnf(c_0_65,negated_conjecture,
    ( identity = sk_c8
    | multiply(inverse(sk_c9),sk_c8) = sk_c3 ),
    inference(spm,[status(thm)],[c_0_19,c_0_59]) ).

cnf(c_0_66,negated_conjecture,
    multiply(inverse(sk_c9),multiply(sk_c8,X1)) = multiply(sk_c9,X1),
    inference(spm,[status(thm)],[c_0_16,c_0_60]) ).

cnf(c_0_67,negated_conjecture,
    ( sk_c8 = sk_c9
    | multiply(sk_c2,sk_c9) = sk_c3 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_61,c_0_50]),c_0_55]) ).

cnf(c_0_68,negated_conjecture,
    ( sk_c2 = sk_c8
    | sk_c8 = sk_c9 ),
    inference(spm,[status(thm)],[c_0_53,c_0_62]) ).

cnf(c_0_69,negated_conjecture,
    multiply(sk_c8,sk_c9) = multiply(sk_c9,sk_c8),
    inference(spm,[status(thm)],[c_0_63,c_0_55]) ).

cnf(c_0_70,negated_conjecture,
    ( identity = sk_c8
    | multiply(inverse(sk_c3),multiply(sk_c9,X1)) = X1 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_64,c_0_65]),c_0_66]) ).

cnf(c_0_71,negated_conjecture,
    ( sk_c8 = sk_c9
    | multiply(sk_c9,sk_c8) = sk_c3 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_67,c_0_68]),c_0_69]) ).

cnf(c_0_72,negated_conjecture,
    ( inverse(sk_c8) = sk_c5
    | inverse(sk_c2) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_25,c_0_22]) ).

cnf(c_0_73,negated_conjecture,
    ( identity = sk_c8
    | sk_c8 = sk_c9 ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_70,c_0_71]),c_0_17])]) ).

cnf(c_0_74,negated_conjecture,
    ( sk_c8 = sk_c9
    | inverse(sk_c8) = sk_c9
    | inverse(sk_c8) = sk_c5 ),
    inference(spm,[status(thm)],[c_0_72,c_0_68]) ).

cnf(c_0_75,negated_conjecture,
    ( sk_c8 = sk_c9
    | inverse(sk_c8) = sk_c8 ),
    inference(spm,[status(thm)],[c_0_52,c_0_73]) ).

cnf(c_0_76,negated_conjecture,
    ( multiply(sk_c8,sk_c8) = sk_c9
    | multiply(sk_c5,sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_60,c_0_33]) ).

cnf(c_0_77,negated_conjecture,
    ( sk_c5 = sk_c8
    | sk_c8 = sk_c9 ),
    inference(spm,[status(thm)],[c_0_74,c_0_75]) ).

cnf(c_0_78,plain,
    inverse(multiply(inverse(multiply(X1,X2)),X1)) = X2,
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_64,c_0_17]),c_0_21]) ).

cnf(c_0_79,negated_conjecture,
    ( sk_c8 = sk_c9
    | multiply(sk_c8,sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_76,c_0_77]) ).

cnf(c_0_80,negated_conjecture,
    ( sk_c8 = sk_c9
    | inverse(sk_c9) = sk_c8 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_78,c_0_79]),c_0_60]) ).

cnf(c_0_81,negated_conjecture,
    ( multiply(X7,sk_c9) != sk_c8
    | inverse(X6) != X7
    | multiply(X6,X7) != sk_c8
    | inverse(X5) != sk_c8
    | multiply(X5,sk_c8) != sk_c9
    | multiply(X4,sk_c8) != sk_c9
    | inverse(X4) != sk_c9
    | inverse(X3) != sk_c9
    | multiply(X3,sk_c9) != X2
    | multiply(sk_c9,X2) != sk_c8
    | multiply(X1,sk_c8) != sk_c9
    | inverse(X1) != sk_c9
    | inverse(sk_c9) != sk_c8 ),
    inference(fof_simplification,[status(thm)],[prove_this_43]) ).

cnf(c_0_82,negated_conjecture,
    ( sk_c8 = sk_c9
    | inverse(sk_c8) = sk_c9 ),
    inference(spm,[status(thm)],[c_0_25,c_0_80]) ).

cnf(c_0_83,negated_conjecture,
    ( multiply(X7,sk_c9) != sk_c8
    | inverse(X6) != X7
    | multiply(X6,X7) != sk_c8
    | inverse(X5) != sk_c8
    | multiply(X5,sk_c8) != sk_c9
    | multiply(X4,sk_c8) != sk_c9
    | inverse(X4) != sk_c9
    | inverse(X3) != sk_c9
    | multiply(X3,sk_c9) != X2
    | multiply(sk_c9,X2) != sk_c8
    | multiply(X1,sk_c8) != sk_c9
    | inverse(X1) != sk_c9
    | inverse(sk_c9) != sk_c8 ),
    c_0_81 ).

cnf(c_0_84,negated_conjecture,
    sk_c8 = sk_c9,
    inference(spm,[status(thm)],[c_0_75,c_0_82]) ).

cnf(c_0_85,negated_conjecture,
    ( inverse(X5) != sk_c9
    | inverse(X1) != sk_c9
    | inverse(X4) != sk_c9
    | inverse(X3) != sk_c8
    | inverse(sk_c9) != sk_c8
    | multiply(X5,sk_c8) != sk_c9
    | multiply(X4,sk_c8) != sk_c9
    | multiply(X3,sk_c8) != sk_c9
    | multiply(X2,inverse(X2)) != sk_c8
    | multiply(inverse(X2),sk_c9) != sk_c8
    | multiply(sk_c9,multiply(X1,sk_c9)) != sk_c8 ),
    inference(er,[status(thm)],[inference(er,[status(thm)],[c_0_83])]) ).

cnf(c_0_86,negated_conjecture,
    identity = sk_c9,
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_60,c_0_84]),c_0_17]) ).

cnf(c_0_87,negated_conjecture,
    ( identity != sk_c8
    | sk_c8 != sk_c9
    | inverse(X4) != sk_c9
    | inverse(X1) != sk_c9
    | inverse(X3) != sk_c9
    | inverse(sk_c9) != sk_c8
    | multiply(X4,sk_c8) != sk_c9
    | multiply(X3,sk_c8) != sk_c9
    | multiply(X2,inverse(X2)) != sk_c8
    | multiply(inverse(X2),sk_c9) != sk_c8
    | multiply(sk_c9,multiply(X1,sk_c9)) != sk_c8 ),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_85,c_0_52]),c_0_18]) ).

cnf(c_0_88,plain,
    inverse(sk_c9) = sk_c9,
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_52,c_0_86]),c_0_86]) ).

cnf(c_0_89,negated_conjecture,
    ( inverse(X4) != sk_c9
    | inverse(X1) != sk_c9
    | inverse(X3) != sk_c9
    | multiply(X4,sk_c9) != sk_c9
    | multiply(X3,sk_c9) != sk_c9
    | multiply(X2,inverse(X2)) != sk_c9
    | multiply(inverse(X2),sk_c9) != sk_c9
    | multiply(sk_c9,multiply(X1,sk_c9)) != sk_c9 ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[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_87,c_0_84]),c_0_84]),c_0_84]),c_0_84]),c_0_84]),c_0_84]),c_0_84]),c_0_84])]),c_0_88]),c_0_86])]) ).

cnf(c_0_90,plain,
    multiply(X1,sk_c9) = X1,
    inference(rw,[status(thm)],[c_0_21,c_0_86]) ).

cnf(c_0_91,plain,
    multiply(sk_c9,X1) = X1,
    inference(rw,[status(thm)],[c_0_18,c_0_86]) ).

cnf(c_0_92,negated_conjecture,
    ( inverse(X1) != sk_c9
    | multiply(X1,inverse(X1)) != sk_c9 ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(er,[status(thm)],[inference(rw,[status(thm)],[inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(er,[status(thm)],[inference(er,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_89,c_0_90]),c_0_90]),c_0_90]),c_0_90])])]),c_0_88])]),c_0_91])]),c_0_88])]) ).

cnf(c_0_93,negated_conjecture,
    $false,
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_92,c_0_88]),c_0_90])]),
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02  % Problem  : GRP239-1 : TPTP v9.3.1. Released v2.5.0.
% 0.00/0.04  % Command  : run_E /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.09/0.36  % Computer : n018.cluster.edu
% 0.09/0.36  % Model    : x86_64 x86_64
% 0.09/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36  % Memory   : 8046.5625MB
% 0.09/0.36  % OS       : Linux 6.8.0-71-generic
% 0.09/0.36  % CPULimit : 300
% 0.09/0.36  % WCLimit  : 300
% 0.09/0.36  % DateTime : Sun Sep 20 20:09:13 UTC 2026
% 0.09/0.37  % CPUTime  : 
% 0.09/0.37  Running run_E /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.13/0.41  Running first-order theorem proving
% 0.13/0.41  Running: /export/starexec/sandbox2/solver/bin/eprover --delete-bad-limit=2000000000 --definitional-cnf=24 -s --print-statistics -R --print-version --proof-object --auto-schedule=8 --cpu-limit=300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 28.73/4.61  % Version: 3.5.1
% 28.73/4.61  % Preprocessing class: FSMSSMSMSSSNFFN.
% 28.73/4.61  % Scheduled 4 strats onto 8 cores with 300 seconds (2400 total)
% 28.73/4.61  % Starting G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI with 1500s (5) cores
% 28.73/4.61  % Starting new_bool_3 with 300s (1) cores
% 28.73/4.61  % Starting new_bool_1 with 300s (1) cores
% 28.73/4.61  % Starting sh5l with 300s (1) cores
% 28.73/4.61  % G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI with pid 76225 completed with status 0
% 28.73/4.61  % Result found by G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI
% 28.73/4.61  % Preprocessing class: FSMSSMSMSSSNFFN.
% 28.73/4.61  % Scheduled 4 strats onto 8 cores with 300 seconds (2400 total)
% 28.73/4.61  % Starting G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI with 1500s (5) cores
% 28.73/4.61  % (lift_lambdas = 1, lambda_to_forall = 1,unroll_only_formulas = 1, sine = Auto)
% 28.73/4.61  % No SInE strategy applied
% 28.73/4.61  % Search class: FGHPS-FFMM21-SFFFFFNN
% 28.73/4.61  % Scheduled 7 strats onto 5 cores with 1500 seconds (1500 total)
% 28.73/4.61  % Starting SubtermCWHack with 136s (1) cores
% 28.73/4.61  % Starting G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI with 151s (1) cores
% 28.73/4.61  % Starting G-E--_208_C18_F1_SE_CS_SP_PS_S5PRR_RG_S04AN with 136s (1) cores
% 28.73/4.61  % Starting new_bool_3 with 136s (1) cores
% 28.73/4.61  % Starting new_bool_1 with 136s (1) cores
% 28.73/4.61  % new_bool_1 with pid 76236 completed with status 0
% 28.73/4.61  % Result found by new_bool_1
% 28.73/4.61  % Preprocessing class: FSMSSMSMSSSNFFN.
% 28.73/4.61  % Scheduled 4 strats onto 8 cores with 300 seconds (2400 total)
% 28.73/4.61  % Starting G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI with 1500s (5) cores
% 28.73/4.61  % (lift_lambdas = 1, lambda_to_forall = 1,unroll_only_formulas = 1, sine = Auto)
% 28.73/4.61  % No SInE strategy applied
% 28.73/4.61  % Search class: FGHPS-FFMM21-SFFFFFNN
% 28.73/4.61  % Scheduled 7 strats onto 5 cores with 1500 seconds (1500 total)
% 28.73/4.61  % Starting SubtermCWHack with 136s (1) cores
% 28.73/4.61  % Starting G-E--_207_C18_F1_SE_CS_SP_PI_PS_S2SI with 151s (1) cores
% 28.73/4.61  % Starting G-E--_208_C18_F1_SE_CS_SP_PS_S5PRR_RG_S04AN with 136s (1) cores
% 28.73/4.61  % Starting new_bool_3 with 136s (1) cores
% 28.73/4.61  % Starting new_bool_1 with 136s (1) cores
% 28.73/4.61  % Preprocessing time       : 0.001 s
% 28.73/4.61  % Presaturation interreduction done
% 28.73/4.61  
% 28.73/4.61  % Proof found!
% 28.73/4.61  % SZS status Unsatisfiable
% 28.73/4.61  % SZS output start CNFRefutation
% See solution above
% 28.73/4.61  % Parsed axioms                        : 46
% 28.73/4.61  % Removed by relevancy pruning/SinE    : 0
% 28.73/4.61  % Initial clauses                      : 46
% 28.73/4.61  % Removed in clause preprocessing      : 0
% 28.73/4.61  % Initial clauses in saturation        : 46
% 28.73/4.61  % Processed clauses                    : 33085
% 28.73/4.61  % ...of these trivial                  : 235
% 28.73/4.61  % ...subsumed                          : 29897
% 28.73/4.61  % ...remaining for further processing  : 2953
% 28.73/4.61  % Other redundant clauses eliminated   : 111
% 28.73/4.61  % Clauses deleted for lack of memory   : 0
% 28.73/4.61  % Backward-subsumed                    : 256
% 28.73/4.61  % Backward-rewritten                   : 2495
% 28.73/4.61  % Generated clauses                    : 543938
% 28.73/4.61  % ...of the previous two non-redundant : 538302
% 28.73/4.61  % ...aggressively subsumed             : 0
% 28.73/4.61  % Contextual simplify-reflections      : 87
% 28.73/4.61  % Paramodulations                      : 543823
% 28.73/4.61  % Factorizations                       : 9
% 28.73/4.61  % NegExts                              : 0
% 28.73/4.61  % Equation resolutions                 : 111
% 28.73/4.61  % Disequality decompositions           : 0
% 28.73/4.61  % Total rewrite steps                  : 263745
% 28.73/4.61  % ...of those cached                   : 256892
% 28.73/4.61  % Propositional unsat checks           : 0
% 28.73/4.61  %    Propositional check models        : 0
% 28.73/4.61  %    Propositional check unsatisfiable : 0
% 28.73/4.61  %    Propositional clauses             : 0
% 28.73/4.61  %    Propositional clauses after purity: 0
% 28.73/4.61  %    Propositional unsat core size     : 0
% 28.73/4.61  %    Propositional preprocessing time  : 0.000
% 28.73/4.61  %    Propositional encoding time       : 0.000
% 28.73/4.61  %    Propositional solver time         : 0.000
% 28.73/4.61  %    Success case prop preproc time    : 0.000
% 28.73/4.61  %    Success case prop encoding time   : 0.000
% 28.73/4.61  %    Success case prop solver time     : 0.000
% 28.73/4.61  % Current number of processed clauses  : 150
% 28.73/4.61  %    Positive orientable unit clauses  : 18
% 28.73/4.61  %    Positive unorientable unit clauses: 0
% 28.73/4.61  %    Negative unit clauses             : 0
% 28.73/4.61  %    Non-unit-clauses                  : 132
% 28.73/4.61  % Current number of unprocessed clauses: 500128
% 28.73/4.61  % ...number of literals in the above   : 1543884
% 28.73/4.61  % Current number of archived formulas  : 0
% 28.73/4.61  % Current number of archived clauses   : 2797
% 28.73/4.61  % Clause-clause subsumption calls (NU) : 416115
% 28.73/4.61  % Rec. Clause-clause subsumption calls : 337447
% 28.73/4.61  % Non-unit clause-clause subsumptions  : 30207
% 28.73/4.61  % Unit Clause-clause subsumption calls : 3049
% 28.73/4.61  % Rewrite failures with RHS unbound    : 0
% 28.73/4.61  % BW rewrite match attempts            : 209
% 28.73/4.61  % BW rewrite match successes           : 99
% 28.73/4.61  % Condensation attempts                : 0
% 28.73/4.61  % Condensation successes               : 0
% 28.73/4.61  % Termbank termtop insertions          : 6768495
% 28.73/4.61  % Search garbage collected termcells   : 37
% 28.73/4.61  
% 28.73/4.61  % -------------------------------------------------
% 28.73/4.61  % User time                : 3.819 s
% 28.73/4.61  % System time              : 0.239 s
% 28.73/4.61  % Total time               : 4.058 s
% 28.73/4.61  % Maximum resident set size: 3400 pages
% 28.73/4.61  
% 28.73/4.61  % -------------------------------------------------
% 28.73/4.61  % User time                : 19.222 s
% 28.73/4.61  % System time              : 1.184 s
% 28.73/4.61  % Total time               : 20.406 s
% 28.73/4.61  % Maximum resident set size: 4608 pages
% 28.73/4.61  % E exiting
%------------------------------------------------------------------------------