TSTP Solution File: SET025+1 by SPASS---3.9
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%------------------------------------------------------------------------------
% File : SPASS---3.9
% Problem : SET025+1 : TPTP v8.1.0. Bugfixed v5.4.0.
% Transfm : none
% Format : tptp
% Command : run_spass %d %s
% Computer : n014.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 600s
% DateTime : Tue Jul 19 05:22:46 EDT 2022
% Result : Theorem 0.19s 0.50s
% Output : Refutation 0.19s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 5
% Syntax : Number of clauses : 9 ( 7 unt; 0 nHn; 9 RR)
% Number of literals : 12 ( 0 equ; 6 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of predicates : 4 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 9 ( 9 usr; 6 con; 0-2 aty)
% Number of variables : 0 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(3,axiom,
subclass(u,universal_class),
file('SET025+1.p',unknown),
[] ).
cnf(8,axiom,
member(unordered_pair(u,v),universal_class),
file('SET025+1.p',unknown),
[] ).
cnf(11,axiom,
~ member(ordered_pair(skc5,skc4),universal_class),
file('SET025+1.p',unknown),
[] ).
cnf(54,axiom,
( ~ member(u,v)
| ~ subclass(v,w)
| member(u,w) ),
file('SET025+1.p',unknown),
[] ).
cnf(56,axiom,
equal(unordered_pair(singleton(u),unordered_pair(u,singleton(v))),ordered_pair(u,v)),
file('SET025+1.p',unknown),
[] ).
cnf(106,plain,
( ~ subclass(u,universal_class)
| ~ member(ordered_pair(skc5,skc4),u) ),
inference(res,[status(thm),theory(equality)],[54,11]),
[iquote('0:Res:54.2,11.0')] ).
cnf(108,plain,
~ member(ordered_pair(skc5,skc4),u),
inference(mrr,[status(thm)],[106,3]),
[iquote('0:MRR:106.0,3.0')] ).
cnf(304,plain,
member(ordered_pair(u,v),universal_class),
inference(spr,[status(thm),theory(equality)],[56,8]),
[iquote('0:SpR:56.0,8.0')] ).
cnf(308,plain,
$false,
inference(unc,[status(thm)],[304,108]),
[iquote('0:UnC:304.0,108.0')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.09/0.12 % Problem : SET025+1 : TPTP v8.1.0. Bugfixed v5.4.0.
% 0.09/0.12 % Command : run_spass %d %s
% 0.12/0.33 % Computer : n014.cluster.edu
% 0.12/0.33 % Model : x86_64 x86_64
% 0.12/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33 % Memory : 8042.1875MB
% 0.12/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33 % CPULimit : 300
% 0.12/0.33 % WCLimit : 600
% 0.12/0.33 % DateTime : Mon Jul 11 09:29:49 EDT 2022
% 0.12/0.33 % CPUTime :
% 0.19/0.50
% 0.19/0.50 SPASS V 3.9
% 0.19/0.50 SPASS beiseite: Proof found.
% 0.19/0.50 % SZS status Theorem
% 0.19/0.50 Problem: /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.19/0.50 SPASS derived 207 clauses, backtracked 0 clauses, performed 0 splits and kept 247 clauses.
% 0.19/0.50 SPASS allocated 98251 KBytes.
% 0.19/0.50 SPASS spent 0:00:00.15 on the problem.
% 0.19/0.50 0:00:00.04 for the input.
% 0.19/0.50 0:00:00.06 for the FLOTTER CNF translation.
% 0.19/0.50 0:00:00.00 for inferences.
% 0.19/0.50 0:00:00.00 for the backtracking.
% 0.19/0.50 0:00:00.03 for the reduction.
% 0.19/0.50
% 0.19/0.50
% 0.19/0.50 Here is a proof with depth 1, length 9 :
% 0.19/0.50 % SZS output start Refutation
% See solution above
% 0.19/0.50 Formulae used in the proof : class_elements_are_sets unordered_pair ordered_pair_is_set subclass_defn ordered_pair_defn
% 0.19/0.50
%------------------------------------------------------------------------------