%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : GRP568-1 : TPTP v9.2.1. Bugfixed v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox2/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox2/solver/bin/cse --final-prover /export/starexec/sandbox2/solver/bin/eprover --proof-time %d --global-time-limit %d
% Computer : n001.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 04:26:25 PM UTC 2026
% Result : Unsatisfiable 1.30s 1.71s
% Output : CNFRefutation 1.30s
% Verified :
% SZS Type : Refutation
% Derivation depth : 16
% Number of leaves : 5
% Syntax : Number of clauses : 40 ( 40 unt; 0 nHn; 4 RR)
% Number of literals : 40 ( 39 equ; 2 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 7 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 3 con; 0-2 aty)
% Number of variables : 69 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(single_axiom,axiom,
double_divide(double_divide(X1,double_divide(double_divide(X2,double_divide(X1,X3)),double_divide(identity,X3))),double_divide(identity,identity)) = X2,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',single_axiom) ).
cnf(inverse,axiom,
inverse(X1) = double_divide(X1,identity),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',inverse) ).
cnf(identity,axiom,
identity = double_divide(X1,inverse(X1)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',identity) ).
cnf(multiply,axiom,
multiply(X1,X2) = double_divide(double_divide(X2,X1),identity),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiply) ).
cnf(prove_these_axioms_4,negated_conjecture,
multiply(a,b) != multiply(b,a),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_these_axioms_4) ).
cnf(c_0_5,axiom,
double_divide(double_divide(X1,double_divide(double_divide(X2,double_divide(X1,X3)),double_divide(identity,X3))),double_divide(identity,identity)) = X2,
single_axiom ).
cnf(c_0_6,axiom,
inverse(X1) = double_divide(X1,identity),
inverse ).
cnf(c_0_7,plain,
double_divide(double_divide(X1,double_divide(double_divide(X2,double_divide(X1,X3)),double_divide(identity,X3))),inverse(identity)) = X2,
inference(rw,[status(thm)],[c_0_5,c_0_6]) ).
cnf(c_0_8,plain,
double_divide(double_divide(X1,double_divide(double_divide(X2,inverse(X1)),inverse(identity))),inverse(identity)) = X2,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_7,c_0_6]),c_0_6]) ).
cnf(c_0_9,axiom,
identity = double_divide(X1,inverse(X1)),
identity ).
cnf(c_0_10,axiom,
multiply(X1,X2) = double_divide(double_divide(X2,X1),identity),
multiply ).
cnf(c_0_11,plain,
double_divide(inverse(X1),inverse(identity)) = X1,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_8,c_0_9]),c_0_9]),c_0_6]) ).
cnf(c_0_12,plain,
inverse(double_divide(X1,X2)) = multiply(X2,X1),
inference(rw,[status(thm)],[c_0_10,c_0_6]) ).
cnf(c_0_13,plain,
double_divide(double_divide(identity,double_divide(X1,inverse(identity))),inverse(identity)) = inverse(X1),
inference(spm,[status(thm)],[c_0_8,c_0_11]) ).
cnf(c_0_14,plain,
double_divide(double_divide(inverse(X1),multiply(X1,X2)),inverse(identity)) = X2,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_7,c_0_11]),c_0_9]),c_0_6]),c_0_12]) ).
cnf(c_0_15,plain,
inverse(identity) = identity,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_13,c_0_9]),c_0_6]),c_0_11]) ).
cnf(c_0_16,plain,
double_divide(multiply(X1,X2),inverse(identity)) = double_divide(X2,X1),
inference(spm,[status(thm)],[c_0_11,c_0_12]) ).
cnf(c_0_17,plain,
multiply(multiply(X1,X2),inverse(X1)) = X2,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_14,c_0_15]),c_0_6]),c_0_12]) ).
cnf(c_0_18,plain,
inverse(multiply(X1,X2)) = double_divide(X2,X1),
inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_16,c_0_15]),c_0_6]) ).
cnf(c_0_19,plain,
inverse(inverse(X1)) = multiply(identity,X1),
inference(spm,[status(thm)],[c_0_12,c_0_6]) ).
cnf(c_0_20,plain,
multiply(multiply(inverse(X1),X2),X1) = X2,
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_8,c_0_15]),c_0_6]),c_0_12]),c_0_15]),c_0_6]),c_0_12]) ).
cnf(c_0_21,plain,
multiply(X1,double_divide(X1,X2)) = inverse(X2),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_17,c_0_17]),c_0_18]) ).
cnf(c_0_22,plain,
multiply(identity,X1) = X1,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_11,c_0_15]),c_0_6]),c_0_19]) ).
cnf(c_0_23,plain,
double_divide(inverse(X1),X2) = multiply(inverse(X2),X1),
inference(spm,[status(thm)],[c_0_20,c_0_21]) ).
cnf(c_0_24,plain,
multiply(inverse(X1),identity) = inverse(X1),
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_13,c_0_15]),c_0_6]),c_0_15]),c_0_6]),c_0_12]) ).
cnf(c_0_25,plain,
inverse(inverse(X1)) = X1,
inference(rw,[status(thm)],[c_0_19,c_0_22]) ).
cnf(c_0_26,plain,
double_divide(X1,inverse(X2)) = multiply(X2,inverse(X1)),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_12,c_0_23]),c_0_18]) ).
cnf(c_0_27,plain,
multiply(X1,identity) = X1,
inference(spm,[status(thm)],[c_0_24,c_0_25]) ).
cnf(c_0_28,plain,
double_divide(double_divide(X1,X2),X1) = X2,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_18,c_0_21]),c_0_19]),c_0_22]) ).
cnf(c_0_29,plain,
double_divide(double_divide(double_divide(X1,double_divide(double_divide(X2,double_divide(X1,X3)),double_divide(identity,X3))),multiply(X2,X4)),inverse(identity)) = X4,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_7,c_0_7]),c_0_9]),c_0_6]),c_0_12]) ).
cnf(c_0_30,plain,
double_divide(X1,double_divide(X2,X3)) = multiply(multiply(X3,X2),inverse(X1)),
inference(spm,[status(thm)],[c_0_26,c_0_18]) ).
cnf(c_0_31,plain,
double_divide(identity,X1) = inverse(X1),
inference(spm,[status(thm)],[c_0_18,c_0_27]) ).
cnf(c_0_32,plain,
multiply(X1,multiply(X2,inverse(X1))) = X2,
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_28,c_0_26]),c_0_23]),c_0_18]),c_0_26]) ).
cnf(c_0_33,plain,
multiply(multiply(X1,X2),double_divide(X3,multiply(X4,multiply(double_divide(X3,X4),X1)))) = X2,
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)],[inference(rw,[status(thm)],[c_0_29,c_0_15]),c_0_6]),c_0_12]),c_0_30]),c_0_31]),c_0_26]),c_0_18]),c_0_23]),c_0_18]) ).
cnf(c_0_34,plain,
double_divide(multiply(X1,inverse(X2)),X2) = inverse(X1),
inference(spm,[status(thm)],[c_0_18,c_0_32]) ).
cnf(c_0_35,plain,
double_divide(multiply(double_divide(multiply(X1,X2),X3),X1),X3) = X2,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_21,c_0_33]),c_0_18]) ).
cnf(c_0_36,plain,
multiply(X1,multiply(inverse(X1),X2)) = X2,
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_34,c_0_35]),c_0_12]) ).
cnf(c_0_37,negated_conjecture,
multiply(a,b) != multiply(b,a),
prove_these_axioms_4 ).
cnf(c_0_38,plain,
multiply(X1,X2) = multiply(X2,X1),
inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_20,c_0_36]),c_0_19]),c_0_22]) ).
cnf(c_0_39,negated_conjecture,
$false,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_37,c_0_38])]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.10 % Problem : GRP568-1 : TPTP v9.2.1. Bugfixed v2.7.0.
% 0.00/0.10 % Command : /export/starexec/sandbox2/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox2/solver/bin/cse --final-prover /export/starexec/sandbox2/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.14/0.31 % Computer : n001.cluster.edu
% 0.14/0.31 % Model : x86_64 x86_64
% 0.14/0.31 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.31 % Memory : 8042.1875MB
% 0.14/0.31 % OS : Linux 3.10.0-693.el7.x86_64
% 0.14/0.31 % CPULimit : 300
% 0.14/0.31 % WCLimit : 300
% 0.14/0.31 % DateTime : Mon May 4 18:44:33 EDT 2026
% 0.14/0.31 % CPUTime :
% 0.14/0.32 % start to proof: theBenchmark
% 1.30/1.71 % Version : CSE_E---1.7
% 1.30/1.71 % Problem : theBenchmark.p
% 1.30/1.71 % SZS status Unsatisfiable for theBenchmark.p
% 1.30/1.71 % SZS output start CNFRefutation
% See solution above
% 1.30/1.72 % Total time : 1.369s
%------------------------------------------------------------------------------