%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : LCL157-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n015.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 07:53:53 AM UTC 2026
% Result : Unsatisfiable 11.26s 3.81s
% Output : CNFRefutation 11.26s
% Verified :
% SZS Type : Refutation
% Derivation depth : 12
% Number of leaves : 11
% Syntax : Number of clauses : 45 ( 45 unt; 0 nHn; 9 RR)
% Number of literals : 45 ( 44 equ; 4 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 : 8 ( 8 usr; 3 con; 0-2 aty)
% Number of variables : 59 ( 4 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(prove_alternative_wajsberg_axiom,negated_conjecture,
'and$ustar'(x,falsehood) != falsehood ).
cnf(wajsberg_1,axiom,
implies(truth,X0) = X0 ).
cnf(wajsberg_2,axiom,
implies(implies(X0,X1),implies(implies(X1,X2),implies(X0,X2))) = truth ).
cnf(wajsberg_3,axiom,
implies(implies(X0,X1),X1) = implies(implies(X1,X0),X0) ).
cnf(wajsberg_4,axiom,
implies(implies(not(X0),not(X1)),implies(X1,X0)) = truth ).
cnf(or_definition,axiom,
or(X0,X1) = implies(not(X0),X1) ).
cnf(or_commutativity,axiom,
or(X0,X1) = or(X1,X0) ).
cnf(and_definition,axiom,
and(X0,X1) = not(or(not(X0),not(X1))) ).
cnf(and_star_definition,axiom,
'and$ustar'(X0,X1) = not(or(not(X0),not(X1))) ).
cnf(and_star_commutativity,axiom,
'and$ustar'(X0,X1) = 'and$ustar'(X1,X0) ).
cnf(false_definition,axiom,
not(truth) = falsehood ).
cnf(c0,plain,
'and$ustar'(x,falsehood) != falsehood,
inference(clausification,[status(esa)],[prove_alternative_wajsberg_axiom]) ).
cnf(c1,plain,
implies(truth,X0) = X0,
inference(clausification,[status(esa)],[wajsberg_1]) ).
cnf(c2,plain,
implies(implies(X0,X1),implies(implies(X1,X2),implies(X0,X2))) = truth,
inference(clausification,[status(esa)],[wajsberg_2]) ).
cnf(c3,plain,
implies(implies(X0,X1),X1) = implies(implies(X1,X0),X0),
inference(clausification,[status(esa)],[wajsberg_3]) ).
cnf(c4,plain,
implies(implies(not(X0),not(X1)),implies(X1,X0)) = truth,
inference(clausification,[status(esa)],[wajsberg_4]) ).
cnf(c5,plain,
or(X0,X1) = implies(not(X0),X1),
inference(clausification,[status(esa)],[or_definition]) ).
cnf(c7,plain,
or(X0,X1) = or(X1,X0),
inference(clausification,[status(esa)],[or_commutativity]) ).
cnf(c8,plain,
and(X0,X1) = not(or(not(X0),not(X1))),
inference(clausification,[status(esa)],[and_definition]) ).
cnf(c13,plain,
'and$ustar'(X0,X1) = not(or(not(X0),not(X1))),
inference(clausification,[status(esa)],[and_star_definition]) ).
cnf(c15,plain,
'and$ustar'(X0,X1) = 'and$ustar'(X1,X0),
inference(clausification,[status(esa)],[and_star_commutativity]) ).
cnf(c16,plain,
not(truth) = falsehood,
inference(clausification,[status(esa)],[false_definition]) ).
cnf(d0,plain,
'and$ustar'(X0,X1) = and(X0,X1),
inference(demodulation,[status(thm)],[c13,c8]) ).
cnf(d1,plain,
'and$ustar'(falsehood,x) != falsehood,
inference(demodulation,[status(thm)],[c0,c15]) ).
cnf(d2,plain,
and(falsehood,x) != falsehood,
inference(demodulation,[status(thm)],[d1,d0]) ).
cnf(d3,plain,
implies(X0,implies(implies(X0,X1),implies(truth,X1))) = truth,
inference(superposition,[status(thm)],[c1,c2]) ).
cnf(d4,plain,
implies(X1,implies(implies(X1,X0),X0)) = truth,
inference(demodulation,[status(thm)],[d3,c1]) ).
cnf(d5,plain,
truth = implies(implies(truth,X0),X0),
inference(superposition,[status(thm)],[d4,c1]) ).
cnf(d6,plain,
truth = implies(X0,X0),
inference(demodulation,[status(thm)],[d5,c1]) ).
cnf(d7,plain,
implies(X0,X0) = implies(implies(X0,truth),truth),
inference(superposition,[status(thm)],[c1,c3]) ).
cnf(d8,plain,
implies(X0,implies(X0,X0)) = truth,
inference(superposition,[status(thm)],[d7,d4]) ).
cnf(d9,plain,
implies(X0,truth) = truth,
inference(demodulation,[status(thm)],[d8,d6]) ).
cnf(d10,plain,
or(X0,truth) = truth,
inference(superposition,[status(thm)],[d9,c5]) ).
cnf(d11,plain,
and(X0,X1) = not(or(not(X1),not(X0))),
inference(superposition,[status(thm)],[c7,c8]) ).
cnf(d12,plain,
implies(or(X0,not(X1)),implies(X1,X0)) = truth,
inference(demodulation,[status(thm)],[c4,c5]) ).
cnf(d13,plain,
implies(or(X0,not(truth)),X0) = truth,
inference(superposition,[status(thm)],[c1,d12]) ).
cnf(d14,plain,
implies(or(X0,falsehood),X0) = truth,
inference(demodulation,[status(thm)],[d13,c16]) ).
cnf(d15,plain,
implies(or(falsehood,X0),X0) = truth,
inference(superposition,[status(thm)],[c7,d14]) ).
cnf(d16,plain,
or(X0,not(X0)) = truth,
inference(superposition,[status(thm)],[d6,c5]) ).
cnf(d17,plain,
implies(truth,not(falsehood)) = truth,
inference(superposition,[status(thm)],[d16,d15]) ).
cnf(d18,plain,
not(falsehood) = truth,
inference(demodulation,[status(thm)],[d17,c1]) ).
cnf(d19,plain,
and(falsehood,X0) = not(or(not(X0),truth)),
inference(superposition,[status(thm)],[d18,d11]) ).
cnf(d20,plain,
and(falsehood,X0) = not(truth),
inference(demodulation,[status(thm)],[d19,d10]) ).
cnf(d21,plain,
and(falsehood,X0) = falsehood,
inference(demodulation,[status(thm)],[d20,c16]) ).
cnf(d22,plain,
$false,
inference(resolution,[status(thm)],[d21,d2]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : LCL157-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.04 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.11/0.37 % Computer : n015.cluster.edu
% 0.11/0.37 % Model : x86_64 x86_64
% 0.11/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37 % Memory : 8046.5625MB
% 0.11/0.37 % OS : Linux 6.8.0-71-generic
% 0.11/0.37 % CPULimit : 300
% 0.11/0.37 % WCLimit : 300
% 0.11/0.37 % DateTime : Fri Sep 25 21:59:12 UTC 2026
% 0.11/0.37 % CPUTime :
% 0.14/0.37 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 11.26/3.81 % SZS status Unsatisfiable for theBenchmark.p
% 11.26/3.81 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------