TSTP Solution File: SET093+1 by SPASS---3.9
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%------------------------------------------------------------------------------
% File : SPASS---3.9
% Problem : SET093+1 : TPTP v8.1.0. Bugfixed v7.3.0.
% 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 05:23:54 EDT 2022
% Result : Theorem 0.18s 0.46s
% Output : Refutation 0.18s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 6
% Syntax : Number of clauses : 11 ( 9 unt; 0 nHn; 11 RR)
% Number of literals : 14 ( 0 equ; 6 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 4 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 8 ( 8 usr; 5 con; 0-2 aty)
% Number of variables : 0 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(3,axiom,
subclass(u,universal_class),
file('SET093+1.p',unknown),
[] ).
cnf(5,axiom,
~ member(skc3,universal_class),
file('SET093+1.p',unknown),
[] ).
cnf(9,axiom,
equal(singleton(member_of(skc3)),skc3),
file('SET093+1.p',unknown),
[] ).
cnf(10,axiom,
member(unordered_pair(u,v),universal_class),
file('SET093+1.p',unknown),
[] ).
cnf(14,axiom,
equal(unordered_pair(u,u),singleton(u)),
file('SET093+1.p',unknown),
[] ).
cnf(59,axiom,
( ~ member(u,v)
| ~ subclass(v,w)
| member(u,w) ),
file('SET093+1.p',unknown),
[] ).
cnf(111,plain,
( ~ subclass(u,universal_class)
| ~ member(skc3,u) ),
inference(res,[status(thm),theory(equality)],[59,5]),
[iquote('0:Res:59.2,5.0')] ).
cnf(121,plain,
~ member(skc3,u),
inference(mrr,[status(thm)],[111,3]),
[iquote('0:MRR:111.0,3.0')] ).
cnf(127,plain,
member(singleton(u),universal_class),
inference(spr,[status(thm),theory(equality)],[14,10]),
[iquote('0:SpR:14.0,10.0')] ).
cnf(129,plain,
member(skc3,universal_class),
inference(spr,[status(thm),theory(equality)],[9,127]),
[iquote('0:SpR:9.0,127.0')] ).
cnf(130,plain,
$false,
inference(mrr,[status(thm)],[129,121]),
[iquote('0:MRR:129.0,121.0')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.11 % Problem : SET093+1 : TPTP v8.1.0. Bugfixed v7.3.0.
% 0.07/0.12 % 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 : Sun Jul 10 01:24:35 EDT 2022
% 0.12/0.33 % CPUTime :
% 0.18/0.46
% 0.18/0.46 SPASS V 3.9
% 0.18/0.46 SPASS beiseite: Proof found.
% 0.18/0.46 % SZS status Theorem
% 0.18/0.46 Problem: /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.18/0.46 SPASS derived 27 clauses, backtracked 0 clauses, performed 0 splits and kept 112 clauses.
% 0.18/0.46 SPASS allocated 98242 KBytes.
% 0.18/0.46 SPASS spent 0:00:00.12 on the problem.
% 0.18/0.46 0:00:00.04 for the input.
% 0.18/0.46 0:00:00.05 for the FLOTTER CNF translation.
% 0.18/0.46 0:00:00.00 for inferences.
% 0.18/0.46 0:00:00.00 for the backtracking.
% 0.18/0.46 0:00:00.01 for the reduction.
% 0.18/0.46
% 0.18/0.46
% 0.18/0.46 Here is a proof with depth 2, length 11 :
% 0.18/0.46 % SZS output start Refutation
% See solution above
% 0.18/0.46 Formulae used in the proof : class_elements_are_sets corollary_2_to_singletons_are_sets unordered_pair singleton_set_defn subclass_defn
% 0.18/0.46
%------------------------------------------------------------------------------