%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : GRP431-1 : TPTP v9.3.1. Released v2.6.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n004.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 : Sun Sep 27 07:23:45 AM UTC 2026
% Result : Unsatisfiable 33.95s 16.39s
% Output : CNFRefutation 33.95s
% Verified :
% SZS Type : Refutation
% Derivation depth : 25
% Number of leaves : 2
% Syntax : Number of clauses : 55 ( 55 unt; 0 nHn; 3 RR)
% Number of literals : 55 ( 54 equ; 2 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 10 ( 3 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 156 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(single_axiom,axiom,
multiply(X0,inverse(multiply(X1,multiply(multiply(multiply(X2,inverse(X2)),inverse(multiply(X3,X1))),X0)))) = X3 ).
cnf(prove_these_axioms_2,negated_conjecture,
multiply(multiply(inverse(b2),b2),a2) != a2 ).
cnf(c0,plain,
multiply(X0,inverse(multiply(X1,multiply(multiply(multiply(X2,inverse(X2)),inverse(multiply(X3,X1))),X0)))) = X3,
inference(clausification,[status(esa)],[single_axiom]) ).
cnf(c1,plain,
multiply(multiply(inverse(b2),b2),a2) != a2,
inference(clausification,[status(esa)],[prove_these_axioms_2]) ).
cnf(d0,plain,
multiply(X4,inverse(multiply(multiply(multiply(multiply(X2,inverse(X2)),inverse(multiply(X3,X1))),multiply(X0,inverse(X0))),multiply(X3,X4)))) = X1,
inference(superposition,[status(thm)],[c0,c0]) ).
cnf(d1,plain,
multiply(X4,inverse(multiply(multiply(multiply(multiply(X5,inverse(X5)),inverse(X3)),multiply(X6,inverse(X6))),multiply(X0,X4)))) = inverse(multiply(X1,multiply(multiply(multiply(X2,inverse(X2)),inverse(multiply(X3,X1))),X0))),
inference(superposition,[status(thm)],[c0,d0]) ).
cnf(d2,plain,
inverse(multiply(X5,multiply(multiply(multiply(X6,inverse(X6)),inverse(multiply(multiply(X2,X3),X5))),X2))) = X3,
inference(superposition,[status(thm)],[d1,d0]) ).
cnf(d3,plain,
multiply(X5,inverse(multiply(multiply(X2,multiply(X0,inverse(X0))),multiply(X3,X5)))) = multiply(multiply(multiply(X1,inverse(X1)),inverse(multiply(X2,X3))),multiply(X4,inverse(X4))),
inference(superposition,[status(thm)],[d0,c0]) ).
cnf(d4,plain,
multiply(multiply(X3,inverse(X3)),inverse(multiply(X2,multiply(X4,inverse(multiply(multiply(X1,multiply(X5,inverse(X5))),multiply(X2,X4))))))) = X1,
inference(superposition,[status(thm)],[d3,c0]) ).
cnf(d5,plain,
multiply(multiply(X5,inverse(X5)),inverse(multiply(X2,X3))) = multiply(multiply(X1,inverse(X1)),inverse(multiply(X2,X3))),
inference(superposition,[status(thm)],[d0,d4]) ).
cnf(d6,plain,
multiply(inverse(multiply(X1,X2)),inverse(multiply(inverse(X0),multiply(multiply(X3,inverse(X3)),inverse(multiply(X1,X2)))))) = X0,
inference(superposition,[status(thm)],[d5,c0]) ).
cnf(d7,plain,
multiply(X4,inverse(multiply(inverse(multiply(X1,multiply(multiply(multiply(X2,inverse(X2)),inverse(multiply(X3,X1))),X0))),multiply(multiply(multiply(X5,inverse(X5)),inverse(X3)),X4)))) = X0,
inference(superposition,[status(thm)],[c0,c0]) ).
cnf(d8,plain,
X5 = multiply(X2,multiply(multiply(multiply(X3,inverse(X3)),inverse(multiply(multiply(X4,inverse(X4)),X2))),X5)),
inference(superposition,[status(thm)],[d7,d6]) ).
cnf(d9,plain,
multiply(X3,inverse(X3)) = multiply(X2,inverse(X2)),
inference(superposition,[status(thm)],[d8,c0]) ).
cnf(d10,plain,
multiply(X1,inverse(X1)) = multiply(multiply(X2,inverse(X2)),inverse(multiply(X0,inverse(X0)))),
inference(superposition,[status(thm)],[d9,d5]) ).
cnf(d11,plain,
inverse(multiply(inverse(multiply(inverse(multiply(X0,inverse(X0))),X1)),multiply(X2,inverse(X2)))) = X1,
inference(superposition,[status(thm)],[d10,d2]) ).
cnf(d12,plain,
inverse(multiply(inverse(multiply(X1,X2)),multiply(multiply(X3,inverse(X3)),X1))) = X2,
inference(superposition,[status(thm)],[d10,d2]) ).
cnf(d13,plain,
inverse(multiply(inverse(X0),multiply(X2,inverse(X2)))) = multiply(multiply(X1,inverse(X1)),X0),
inference(superposition,[status(thm)],[d12,d11]) ).
cnf(d14,plain,
X1 = multiply(multiply(X3,inverse(X3)),multiply(inverse(multiply(X0,inverse(X0))),X1)),
inference(superposition,[status(thm)],[d11,d13]) ).
cnf(d15,plain,
multiply(X2,inverse(multiply(inverse(X0),multiply(multiply(X1,inverse(X1)),X2)))) = X0,
inference(superposition,[status(thm)],[d9,c0]) ).
cnf(d16,plain,
multiply(multiply(X3,inverse(X3)),multiply(inverse(multiply(X0,inverse(X0))),X1)) = X1,
inference(superposition,[status(thm)],[d13,d11]) ).
cnf(d17,plain,
multiply(multiply(inverse(multiply(X1,inverse(X1))),X2),inverse(multiply(inverse(X3),X2))) = X3,
inference(superposition,[status(thm)],[d16,d15]) ).
cnf(d18,plain,
multiply(X1,inverse(multiply(inverse(X3),inverse(multiply(inverse(X1),multiply(X2,inverse(X2))))))) = X3,
inference(superposition,[status(thm)],[d13,d15]) ).
cnf(d19,plain,
multiply(X2,inverse(X1)) = multiply(multiply(X0,inverse(X0)),inverse(multiply(X1,inverse(X2)))),
inference(superposition,[status(thm)],[c0,d18]) ).
cnf(d20,plain,
multiply(inverse(multiply(X0,inverse(X0))),inverse(inverse(X1))) = X1,
inference(superposition,[status(thm)],[d19,d17]) ).
cnf(d21,plain,
inverse(inverse(X1)) = multiply(multiply(X2,inverse(X2)),X1),
inference(superposition,[status(thm)],[d20,d14]) ).
cnf(d22,plain,
multiply(multiply(X2,inverse(X2)),X0) = multiply(multiply(X3,inverse(X3)),X0),
inference(superposition,[status(thm)],[d13,d13]) ).
cnf(d23,plain,
multiply(multiply(X3,inverse(X3)),X1) = inverse(multiply(inverse(X1),multiply(X2,inverse(X2)))),
inference(superposition,[status(thm)],[d13,d22]) ).
cnf(d24,plain,
inverse(inverse(X1)) = inverse(multiply(inverse(X1),multiply(X2,inverse(X2)))),
inference(demodulation,[status(thm)],[d23,d21]) ).
cnf(d25,plain,
multiply(X5,inverse(multiply(multiply(X3,multiply(X6,inverse(X6))),multiply(multiply(multiply(multiply(X1,inverse(X1)),inverse(multiply(X2,X3))),multiply(X4,inverse(X4))),X5)))) = multiply(X2,multiply(X0,inverse(X0))),
inference(superposition,[status(thm)],[d0,d0]) ).
cnf(d26,plain,
multiply(X4,multiply(X6,inverse(X6))) = multiply(X4,multiply(X7,inverse(X7))),
inference(superposition,[status(thm)],[d25,d25]) ).
cnf(d27,plain,
multiply(multiply(multiply(X5,inverse(X5)),inverse(multiply(multiply(multiply(X1,inverse(X1)),inverse(multiply(X2,X3))),X2))),multiply(X6,inverse(X6))) = X3,
inference(superposition,[status(thm)],[d3,d0]) ).
cnf(d28,plain,
multiply(multiply(multiply(X2,inverse(X2)),inverse(inverse(X1))),multiply(X3,inverse(X3))) = X1,
inference(superposition,[status(thm)],[d27,d27]) ).
cnf(d29,plain,
X1 = multiply(multiply(multiply(X0,inverse(X0)),inverse(inverse(X1))),multiply(X3,inverse(X3))),
inference(superposition,[status(thm)],[d28,d26]) ).
cnf(d30,plain,
X1 = multiply(inverse(inverse(inverse(inverse(X1)))),multiply(X2,inverse(X2))),
inference(demodulation,[status(thm)],[d29,d21]) ).
cnf(d31,plain,
inverse(inverse(inverse(inverse(inverse(X0))))) = inverse(X0),
inference(superposition,[status(thm)],[d30,d24]) ).
cnf(d32,plain,
multiply(X2,multiply(multiply(multiply(X3,inverse(X3)),inverse(multiply(multiply(X4,inverse(X4)),X2))),X5)) = X5,
inference(superposition,[status(thm)],[d6,d7]) ).
cnf(d33,plain,
multiply(X2,multiply(inverse(inverse(inverse(multiply(multiply(X1,inverse(X1)),X2)))),X3)) = X3,
inference(demodulation,[status(thm)],[d32,d21]) ).
cnf(d34,plain,
multiply(X1,multiply(inverse(inverse(inverse(inverse(inverse(X1))))),X2)) = X2,
inference(demodulation,[status(thm)],[d33,d21]) ).
cnf(d35,plain,
multiply(X0,multiply(inverse(X0),X1)) = X1,
inference(demodulation,[status(thm)],[d34,d31]) ).
cnf(d36,plain,
inverse(inverse(X0)) = inverse(inverse(inverse(inverse(X0)))),
inference(superposition,[status(thm)],[d35,d24]) ).
cnf(d37,plain,
inverse(inverse(inverse(X0))) = inverse(X0),
inference(demodulation,[status(thm)],[d31,d36]) ).
cnf(d38,plain,
X0 = inverse(inverse(inverse(inverse(inverse(inverse(X0)))))),
inference(superposition,[status(thm)],[d35,d30]) ).
cnf(d39,plain,
X0 = inverse(inverse(inverse(inverse(X0)))),
inference(demodulation,[status(thm)],[d38,d37]) ).
cnf(d40,plain,
X0 = inverse(inverse(X0)),
inference(demodulation,[status(thm)],[d39,d37]) ).
cnf(d41,plain,
multiply(multiply(X2,inverse(X2)),X1) = inverse(inverse(X1)),
inference(superposition,[status(thm)],[d20,d16]) ).
cnf(d42,plain,
multiply(multiply(X1,inverse(X1)),X0) = X0,
inference(demodulation,[status(thm)],[d41,d40]) ).
cnf(d43,plain,
X2 = multiply(inverse(multiply(X0,inverse(X0))),multiply(multiply(X1,inverse(X1)),X2)),
inference(superposition,[status(thm)],[d9,d8]) ).
cnf(d44,plain,
inverse(multiply(X0,inverse(X0))) = multiply(inverse(multiply(X2,inverse(X2))),multiply(X1,inverse(X1))),
inference(superposition,[status(thm)],[d9,d43]) ).
cnf(d45,plain,
inverse(multiply(X3,inverse(X3))) = inverse(multiply(X2,inverse(X2))),
inference(superposition,[status(thm)],[d44,d44]) ).
cnf(d46,plain,
inverse(multiply(inverse(multiply(X1,inverse(X1))),multiply(multiply(X2,inverse(X2)),X0))) = inverse(X0),
inference(superposition,[status(thm)],[d45,d12]) ).
cnf(d47,plain,
inverse(X2) = inverse(X2),
inference(demodulation,[status(thm)],[d46,d43]) ).
cnf(d48,plain,
inverse(inverse(X0)) = X0,
inference(superposition,[status(thm)],[d40,d47]) ).
cnf(d49,plain,
multiply(multiply(inverse(X0),X0),X1) = X1,
inference(superposition,[status(thm)],[d48,d42]) ).
cnf(d50,plain,
$false,
inference(resolution,[status(thm)],[d49,c1]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.04 % Problem : GRP431-1 : TPTP v9.3.1. Released v2.6.0.
% 0.00/0.05 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.41 % Computer : n004.cluster.edu
% 0.10/0.41 % Model : x86_64 x86_64
% 0.10/0.41 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.41 % Memory : 8046.5625MB
% 0.10/0.41 % OS : Linux 6.8.0-71-generic
% 0.10/0.41 % CPULimit : 300
% 0.10/0.41 % WCLimit : 300
% 0.10/0.41 % DateTime : Fri Sep 25 14:53:50 UTC 2026
% 0.10/0.42 % CPUTime :
% 0.10/0.42 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 33.95/16.39 % SZS status Unsatisfiable for theBenchmark.p
% 33.95/16.39 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------