%------------------------------------------------------------------------------
% File : SPASS---3.9
% Problem : LCL440-1 : TPTP v9.3.1. Released v3.2.0.
% Transfm : none
% Format : tptp
% Command : run_spass %d %s
% Computer : n010.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 : Mon Sep 7 01:07:32 PM UTC 2026
% Result : Unsatisfiable 0.45s 0.72s
% Output : Refutation 0.45s
% Verified :
% SZS Type : Refutation
% Derivation depth : 1
% Number of leaves : 2
% Syntax : Number of clauses : 3 ( 3 unt; 0 nHn; 3 RR)
% Number of literals : 3 ( 0 equ; 1 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-3 aty)
% Number of functors : 9 ( 9 usr; 6 con; 0-3 aty)
% Number of variables : 0 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(3,axiom,
c_in(c_PropLog_Opl_Oop_A_N_62(u,u,v),c_PropLog_Othms(w,v),tc_PropLog_Opl(v)),
file('LCL440-1.p',unknown),
[] ).
cnf(7,axiom,
~ c_in(c_PropLog_Opl_Oop_A_N_62(c_PropLog_Opl_Ofalse,c_PropLog_Opl_Ofalse,t_a),c_PropLog_Othms(c_emptyset,t_a),tc_PropLog_Opl(t_a)),
file('LCL440-1.p',unknown),
[] ).
cnf(1376,plain,
$false,
inference(mrr,[status(thm)],[7,3]),
[iquote('0:MRR:7.0,3.0')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : LCL440-1 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.03 % Command : run_spass %d %s
% 0.08/0.35 % Computer : n010.cluster.edu
% 0.08/0.35 % Model : x86_64 x86_64
% 0.08/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.35 % Memory : 8046.5625MB
% 0.08/0.35 % OS : Linux 6.8.0-71-generic
% 0.08/0.35 % CPULimit : 300
% 0.08/0.35 % WCLimit : 300
% 0.08/0.35 % DateTime : Fri Sep 4 15:35:08 UTC 2026
% 0.08/0.36 % CPUTime :
% 0.45/0.72
% 0.45/0.72 SPASS V 3.9
% 0.45/0.72 SPASS beiseite: Proof found.
% 0.45/0.72 % SZS status Theorem
% 0.45/0.72 Problem: /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.45/0.72 SPASS derived 0 clauses, backtracked 0 clauses, performed 0 splits and kept 1149 clauses.
% 0.45/0.72 SPASS allocated 77779 KBytes.
% 0.45/0.72 SPASS spent 0:00:00.33 on the problem.
% 0.45/0.72 0:00:00.12 for the input.
% 0.45/0.72 0:00:00.00 for the FLOTTER CNF translation.
% 0.45/0.72 0:00:00.00 for inferences.
% 0.45/0.72 0:00:00.00 for the backtracking.
% 0.45/0.72 0:00:00.08 for the reduction.
% 0.45/0.72
% 0.45/0.72
% 0.45/0.72 Here is a proof with depth 0, length 3 :
% 0.45/0.72 % SZS output start Refutation
% See solution above
% 0.45/0.72 Formulae used in the proof : cls_PropLog_Othms__I_0 cls_conjecture_0
% 0.45/0.72
%------------------------------------------------------------------------------