%------------------------------------------------------------------------------
% File : Twee---2.7
% Problem : BOO004-2 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_twee /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n011.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 09:35:20 AM UTC 2026
% Result : Unsatisfiable 0.08s 0.25s
% Output : CNFRefutation 0.08s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 7
% Syntax : Number of clauses : 23 ( 23 unt; 0 nHn; 3 RR)
% Number of literals : 23 ( 22 equ; 1 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 4 ( 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 : 32 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(c1,negated_conjecture,
add(a,a) != a,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_a_plus_a_is_a) ).
cnf(c2,axiom,
multiply(X,Y) = multiply(Y,X),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_of_multiply) ).
cnf(c3,plain,
multiply(inverse(X3),X2) = multiply(X2,inverse(X3)),
inference(substitution,[status(thm)],[c2]) ).
cnf(c4,plain,
multiply(X2,inverse(X3)) = multiply(inverse(X3),X2),
inference(symmetry,[status(thm)],[c3]) ).
cnf(c5,plain,
add(X3,multiply(X2,inverse(X3))) = add(X3,multiply(inverse(X3),X2)),
inference(congruence,[status(thm)],[c4]) ).
cnf(c6,axiom,
add(X2,multiply(Y2,Z)) = multiply(add(X2,Y2),add(X2,Z)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',distributivity2) ).
cnf(c7,plain,
add(X3,multiply(inverse(X3),X2)) = multiply(add(X3,inverse(X3)),add(X3,X2)),
inference(substitution,[status(thm)],[c6]) ).
cnf(c8,axiom,
add(X2,inverse(X2)) = multiplicative_identity,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',step) ).
cnf(c9,plain,
multiply(add(X3,inverse(X3)),add(X3,X2)) = multiply(multiplicative_identity,add(X3,X2)),
inference(congruence,[status(thm)],[c8]) ).
cnf(c10,axiom,
multiply(multiplicative_identity,X2) = X2,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiplicative_id2) ).
cnf(c11,plain,
multiply(multiplicative_identity,add(X3,X2)) = add(X3,X2),
inference(substitution,[status(thm)],[c10]) ).
cnf(c12,plain,
multiply(add(X3,inverse(X3)),add(X3,X2)) = add(X3,X2),
inference(transitivity,[status(thm)],[c9,c11]) ).
cnf(c13,plain,
add(X3,multiply(inverse(X3),X2)) = add(X3,X2),
inference(transitivity,[status(thm)],[c7,c12]) ).
cnf(c14,plain,
add(X3,multiply(X2,inverse(X3))) = add(X3,X2),
inference(transitivity,[status(thm)],[c5,c13]) ).
cnf(c15,plain,
add(X2,multiply(X2,inverse(X2))) = add(X2,X2),
inference(substitution,[status(thm)],[c14]) ).
cnf(c16,plain,
add(X2,X2) = add(X2,multiply(X2,inverse(X2))),
inference(symmetry,[status(thm)],[c15]) ).
cnf(c17,axiom,
multiply(X2,inverse(X2)) = additive_identity,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',step) ).
cnf(c18,plain,
add(X2,multiply(X2,inverse(X2))) = add(X2,additive_identity),
inference(congruence,[status(thm)],[c17]) ).
cnf(c19,axiom,
add(X2,additive_identity) = X2,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',step) ).
cnf(c20,plain,
add(X2,multiply(X2,inverse(X2))) = X2,
inference(transitivity,[status(thm)],[c18,c19]) ).
cnf(c21,plain,
add(X2,X2) = X2,
inference(transitivity,[status(thm)],[c16,c20]) ).
cnf(c22,plain,
add(a,a) = a,
inference(substitution,[status(thm)],[c21]) ).
cnf(c23,plain,
$false,
inference(resolution,[status(thm)],[c1,c22]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : BOO004-2 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.04 % Command : run_twee /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.16 % Computer : n011.cluster.edu
% 0.08/0.16 % Model : x86_64 x86_64
% 0.08/0.16 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.16 % Memory : 8046.5625MB
% 0.08/0.16 % OS : Linux 6.8.0-71-generic
% 0.08/0.16 % CPULimit : 300
% 0.08/0.16 % WCLimit : 300
% 0.08/0.16 % DateTime : Mon Sep 28 21:03:15 UTC 2026
% 0.08/0.17 % CPUTime :
% 0.08/0.17 Running run_twee /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.25 Command-line arguments: --lhs-weight 1 --flip-ordering --normalise-queue-percent 10 --cp-renormalise-threshold 10 --complete-subsets --ground-joining-incomplete-limit 15 --flatten-regeneralise
% 0.08/0.25
% 0.08/0.25 % SZS status Unsatisfiable
% 0.08/0.25
% 0.08/0.25 % SZS output start CNFRefutation
% See solution above
% 0.08/0.25
% 0.08/0.25 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------