%------------------------------------------------------------------------------
% File : Twee---2.7
% Problem : GRP565-1 : TPTP v9.3.1. Released v2.6.0.
% Transfm : none
% Format : tptp:raw
% Command : run_twee /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n017.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 : Tue Sep 29 10:11:15 AM UTC 2026
% Result : Unsatisfiable 0.14s 0.42s
% Output : CNFRefutation 0.14s
% Verified :
% SZS Type : Refutation
% Derivation depth : 20
% Number of leaves : 5
% Syntax : Number of clauses : 90 ( 90 unt; 0 nHn; 16 RR)
% Number of literals : 90 ( 89 equ; 1 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 : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 111 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(c1,negated_conjecture,
multiply(inverse(a1),a1) != identity,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_these_axioms_1) ).
cnf(c2,axiom,
inverse(A) = double_divide(A,identity),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',inverse) ).
cnf(c3,plain,
inverse(double_divide(X2,X)) = double_divide(double_divide(X2,X),identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c4,axiom,
multiply(A2,B) = double_divide(double_divide(B,A2),identity),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiply) ).
cnf(c5,plain,
multiply(X,X2) = double_divide(double_divide(X2,X),identity),
inference(substitution,[status(thm)],[c4]) ).
cnf(c6,plain,
double_divide(double_divide(X2,X),identity) = multiply(X,X2),
inference(symmetry,[status(thm)],[c5]) ).
cnf(c7,plain,
inverse(double_divide(X2,X)) = multiply(X,X2),
inference(transitivity,[status(thm)],[c3,c6]) ).
cnf(c8,plain,
inverse(double_divide(X,inverse(X))) = multiply(inverse(X),X),
inference(substitution,[status(thm)],[c7]) ).
cnf(c9,plain,
multiply(inverse(X),X) = inverse(double_divide(X,inverse(X))),
inference(symmetry,[status(thm)],[c8]) ).
cnf(c10,axiom,
identity = double_divide(A2,inverse(A2)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',identity) ).
cnf(c11,plain,
identity = double_divide(X,inverse(X)),
inference(substitution,[status(thm)],[c10]) ).
cnf(c12,plain,
double_divide(X,inverse(X)) = identity,
inference(symmetry,[status(thm)],[c11]) ).
cnf(c13,plain,
inverse(double_divide(X,inverse(X))) = inverse(identity),
inference(congruence,[status(thm)],[c12]) ).
cnf(c14,plain,
multiply(inverse(X),X) = inverse(identity),
inference(transitivity,[status(thm)],[c9,c13]) ).
cnf(c15,plain,
multiply(inverse(a1),a1) = inverse(identity),
inference(substitution,[status(thm)],[c14]) ).
cnf(c16,plain,
inverse(X) = double_divide(X,identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c17,plain,
double_divide(inverse(X),inverse(identity)) = double_divide(double_divide(X,identity),inverse(identity)),
inference(congruence,[status(thm)],[c16]) ).
cnf(c18,plain,
identity = double_divide(identity,inverse(identity)),
inference(substitution,[status(thm)],[c10]) ).
cnf(c19,plain,
double_divide(X,identity) = double_divide(X,double_divide(identity,inverse(identity))),
inference(congruence,[status(thm)],[c18]) ).
cnf(c20,plain,
double_divide(double_divide(X,identity),inverse(identity)) = double_divide(double_divide(X,double_divide(identity,inverse(identity))),inverse(identity)),
inference(congruence,[status(thm)],[c19]) ).
cnf(c21,plain,
identity = double_divide(X,inverse(X)),
inference(substitution,[status(thm)],[c10]) ).
cnf(c22,plain,
double_divide(identity,inverse(identity)) = double_divide(double_divide(X,inverse(X)),inverse(identity)),
inference(congruence,[status(thm)],[c21]) ).
cnf(c23,plain,
double_divide(X,double_divide(identity,inverse(identity))) = double_divide(X,double_divide(double_divide(X,inverse(X)),inverse(identity))),
inference(congruence,[status(thm)],[c22]) ).
cnf(c24,plain,
double_divide(double_divide(X,double_divide(identity,inverse(identity))),inverse(identity)) = double_divide(double_divide(X,double_divide(double_divide(X,inverse(X)),inverse(identity))),inverse(identity)),
inference(congruence,[status(thm)],[c23]) ).
cnf(c25,plain,
inverse(identity) = double_divide(identity,identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c26,plain,
double_divide(double_divide(X,inverse(X2)),inverse(identity)) = double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity)),
inference(congruence,[status(thm)],[c25]) ).
cnf(c27,plain,
double_divide(X2,double_divide(double_divide(X,inverse(X2)),inverse(identity))) = double_divide(X2,double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity))),
inference(congruence,[status(thm)],[c26]) ).
cnf(c28,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,inverse(X2)),inverse(identity))),inverse(identity)) = double_divide(double_divide(X2,double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity))),inverse(identity)),
inference(congruence,[status(thm)],[c27]) ).
cnf(c29,plain,
inverse(X) = double_divide(X,identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c30,plain,
double_divide(X,inverse(X2)) = double_divide(X,double_divide(X2,identity)),
inference(congruence,[status(thm)],[c29]) ).
cnf(c31,plain,
double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity)) = double_divide(double_divide(X,double_divide(X2,identity)),double_divide(identity,identity)),
inference(congruence,[status(thm)],[c30]) ).
cnf(c32,plain,
double_divide(X2,double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity))) = double_divide(X2,double_divide(double_divide(X,double_divide(X2,identity)),double_divide(identity,identity))),
inference(congruence,[status(thm)],[c31]) ).
cnf(c33,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity))),inverse(identity)) = double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,identity)),double_divide(identity,identity))),inverse(identity)),
inference(congruence,[status(thm)],[c32]) ).
cnf(c34,plain,
inverse(identity) = double_divide(identity,identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c35,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,X3)),double_divide(identity,X3))),inverse(identity)) = double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,X3)),double_divide(identity,X3))),double_divide(identity,identity)),
inference(congruence,[status(thm)],[c34]) ).
cnf(c36,axiom,
double_divide(double_divide(A2,double_divide(double_divide(B2,double_divide(A2,C)),double_divide(identity,C))),double_divide(identity,identity)) = B2,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',single_axiom) ).
cnf(c37,plain,
double_divide(double_divide(X3,double_divide(double_divide(X2,double_divide(X3,X)),double_divide(identity,X))),double_divide(identity,identity)) = X2,
inference(substitution,[status(thm)],[c36]) ).
cnf(c38,plain,
double_divide(double_divide(X3,double_divide(double_divide(X2,double_divide(X3,X)),double_divide(identity,X))),inverse(identity)) = X2,
inference(transitivity,[status(thm)],[c35,c37]) ).
cnf(c39,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,identity)),double_divide(identity,identity))),inverse(identity)) = X,
inference(substitution,[status(thm)],[c38]) ).
cnf(c40,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,inverse(X2)),double_divide(identity,identity))),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c33,c39]) ).
cnf(c41,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,inverse(X2)),inverse(identity))),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c28,c40]) ).
cnf(c42,plain,
double_divide(double_divide(X,double_divide(double_divide(X,inverse(X)),inverse(identity))),inverse(identity)) = X,
inference(substitution,[status(thm)],[c41]) ).
cnf(c43,plain,
double_divide(double_divide(X,double_divide(identity,inverse(identity))),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c24,c42]) ).
cnf(c44,plain,
double_divide(double_divide(X,identity),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c20,c43]) ).
cnf(c45,plain,
double_divide(inverse(X),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c17,c44]) ).
cnf(c46,plain,
double_divide(inverse(inverse(identity)),inverse(identity)) = inverse(identity),
inference(substitution,[status(thm)],[c45]) ).
cnf(c47,plain,
inverse(identity) = double_divide(inverse(inverse(identity)),inverse(identity)),
inference(symmetry,[status(thm)],[c46]) ).
cnf(c48,plain,
inverse(inverse(identity)) = double_divide(inverse(identity),identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c49,plain,
double_divide(inverse(inverse(identity)),inverse(identity)) = double_divide(double_divide(inverse(identity),identity),inverse(identity)),
inference(congruence,[status(thm)],[c48]) ).
cnf(c50,plain,
inverse(double_divide(X,identity)) = multiply(identity,X),
inference(substitution,[status(thm)],[c7]) ).
cnf(c51,plain,
multiply(identity,X) = inverse(double_divide(X,identity)),
inference(symmetry,[status(thm)],[c50]) ).
cnf(c52,plain,
inverse(X) = double_divide(X,identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c53,plain,
double_divide(X,identity) = inverse(X),
inference(symmetry,[status(thm)],[c52]) ).
cnf(c54,plain,
inverse(double_divide(X,identity)) = inverse(inverse(X)),
inference(congruence,[status(thm)],[c53]) ).
cnf(c55,plain,
multiply(identity,X) = inverse(inverse(X)),
inference(transitivity,[status(thm)],[c51,c54]) ).
cnf(c56,plain,
inverse(inverse(X)) = multiply(identity,X),
inference(symmetry,[status(thm)],[c55]) ).
cnf(c57,plain,
double_divide(identity,inverse(inverse(X))) = double_divide(identity,multiply(identity,X)),
inference(congruence,[status(thm)],[c56]) ).
cnf(c58,plain,
double_divide(double_divide(identity,inverse(inverse(X))),inverse(identity)) = double_divide(double_divide(identity,multiply(identity,X)),inverse(identity)),
inference(congruence,[status(thm)],[c57]) ).
cnf(c59,plain,
identity = double_divide(identity,inverse(identity)),
inference(substitution,[status(thm)],[c10]) ).
cnf(c60,plain,
multiply(identity,X) = multiply(double_divide(identity,inverse(identity)),X),
inference(congruence,[status(thm)],[c59]) ).
cnf(c61,plain,
double_divide(identity,multiply(identity,X)) = double_divide(identity,multiply(double_divide(identity,inverse(identity)),X)),
inference(congruence,[status(thm)],[c60]) ).
cnf(c62,plain,
double_divide(double_divide(identity,multiply(identity,X)),inverse(identity)) = double_divide(double_divide(identity,multiply(double_divide(identity,inverse(identity)),X)),inverse(identity)),
inference(congruence,[status(thm)],[c61]) ).
cnf(c63,plain,
inverse(double_divide(X,double_divide(X2,inverse(identity)))) = multiply(double_divide(X2,inverse(identity)),X),
inference(substitution,[status(thm)],[c7]) ).
cnf(c64,plain,
multiply(double_divide(X2,inverse(identity)),X) = inverse(double_divide(X,double_divide(X2,inverse(identity)))),
inference(symmetry,[status(thm)],[c63]) ).
cnf(c65,plain,
double_divide(X2,multiply(double_divide(X2,inverse(identity)),X)) = double_divide(X2,inverse(double_divide(X,double_divide(X2,inverse(identity))))),
inference(congruence,[status(thm)],[c64]) ).
cnf(c66,plain,
double_divide(double_divide(X2,multiply(double_divide(X2,inverse(identity)),X)),inverse(identity)) = double_divide(double_divide(X2,inverse(double_divide(X,double_divide(X2,inverse(identity))))),inverse(identity)),
inference(congruence,[status(thm)],[c65]) ).
cnf(c67,plain,
inverse(double_divide(X,double_divide(X2,inverse(identity)))) = double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity),
inference(substitution,[status(thm)],[c2]) ).
cnf(c68,plain,
double_divide(X2,inverse(double_divide(X,double_divide(X2,inverse(identity))))) = double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity)),
inference(congruence,[status(thm)],[c67]) ).
cnf(c69,plain,
double_divide(double_divide(X2,inverse(double_divide(X,double_divide(X2,inverse(identity))))),inverse(identity)) = double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity)),inverse(identity)),
inference(congruence,[status(thm)],[c68]) ).
cnf(c70,plain,
identity = double_divide(identity,inverse(identity)),
inference(substitution,[status(thm)],[c10]) ).
cnf(c71,plain,
double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity) = double_divide(double_divide(X,double_divide(X2,inverse(identity))),double_divide(identity,inverse(identity))),
inference(congruence,[status(thm)],[c70]) ).
cnf(c72,plain,
double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity)) = double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),double_divide(identity,inverse(identity)))),
inference(congruence,[status(thm)],[c71]) ).
cnf(c73,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity)),inverse(identity)) = double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),double_divide(identity,inverse(identity)))),inverse(identity)),
inference(congruence,[status(thm)],[c72]) ).
cnf(c74,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),double_divide(identity,inverse(identity)))),inverse(identity)) = X,
inference(substitution,[status(thm)],[c38]) ).
cnf(c75,plain,
double_divide(double_divide(X2,double_divide(double_divide(X,double_divide(X2,inverse(identity))),identity)),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c73,c74]) ).
cnf(c76,plain,
double_divide(double_divide(X2,inverse(double_divide(X,double_divide(X2,inverse(identity))))),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c69,c75]) ).
cnf(c77,plain,
double_divide(double_divide(X2,multiply(double_divide(X2,inverse(identity)),X)),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c66,c76]) ).
cnf(c78,plain,
double_divide(double_divide(identity,multiply(double_divide(identity,inverse(identity)),X)),inverse(identity)) = X,
inference(substitution,[status(thm)],[c77]) ).
cnf(c79,plain,
double_divide(double_divide(identity,multiply(identity,X)),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c62,c78]) ).
cnf(c80,plain,
double_divide(double_divide(identity,inverse(inverse(X))),inverse(identity)) = X,
inference(transitivity,[status(thm)],[c58,c79]) ).
cnf(c81,plain,
X = double_divide(double_divide(identity,inverse(inverse(X))),inverse(identity)),
inference(symmetry,[status(thm)],[c80]) ).
cnf(c82,plain,
double_divide(inverse(X),X) = double_divide(inverse(X),double_divide(double_divide(identity,inverse(inverse(X))),inverse(identity))),
inference(congruence,[status(thm)],[c81]) ).
cnf(c83,plain,
double_divide(double_divide(inverse(X),X),inverse(identity)) = double_divide(double_divide(inverse(X),double_divide(double_divide(identity,inverse(inverse(X))),inverse(identity))),inverse(identity)),
inference(congruence,[status(thm)],[c82]) ).
cnf(c84,plain,
double_divide(double_divide(inverse(X),double_divide(double_divide(identity,inverse(inverse(X))),inverse(identity))),inverse(identity)) = identity,
inference(substitution,[status(thm)],[c41]) ).
cnf(c85,plain,
double_divide(double_divide(inverse(X),X),inverse(identity)) = identity,
inference(transitivity,[status(thm)],[c83,c84]) ).
cnf(c86,plain,
double_divide(double_divide(inverse(identity),identity),inverse(identity)) = identity,
inference(substitution,[status(thm)],[c85]) ).
cnf(c87,plain,
double_divide(inverse(inverse(identity)),inverse(identity)) = identity,
inference(transitivity,[status(thm)],[c49,c86]) ).
cnf(c88,plain,
inverse(identity) = identity,
inference(transitivity,[status(thm)],[c47,c87]) ).
cnf(c89,plain,
multiply(inverse(a1),a1) = identity,
inference(transitivity,[status(thm)],[c15,c88]) ).
cnf(c90,plain,
$false,
inference(resolution,[status(thm)],[c1,c89]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GRP565-1 : TPTP v9.3.1. Released v2.6.0.
% 0.00/0.04 % Command : run_twee /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.11/0.36 % Computer : n017.cluster.edu
% 0.11/0.36 % Model : x86_64 x86_64
% 0.11/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.36 % Memory : 8046.5625MB
% 0.11/0.36 % OS : Linux 6.8.0-71-generic
% 0.11/0.36 % CPULimit : 300
% 0.11/0.36 % WCLimit : 300
% 0.11/0.36 % DateTime : Sun Sep 27 10:02:49 UTC 2026
% 0.11/0.36 % CPUTime :
% 0.11/0.36 Running run_twee /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.14/0.42 Command-line arguments: --no-flatten-goal
% 0.14/0.42
% 0.14/0.42 % SZS status Unsatisfiable
% 0.14/0.42
% 0.14/0.42 % SZS output start CNFRefutation
% See solution above
% 0.14/0.45
% 0.14/0.45 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------