TSTP Solution File: SET917+1 by SPASS---3.9
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%------------------------------------------------------------------------------
% File : SPASS---3.9
% Problem : SET917+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm : none
% Format : tptp
% Command : run_spass %d %s
% Computer : n009.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 05:29:47 EDT 2022
% Result : Theorem 0.19s 0.43s
% Output : Refutation 0.19s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 5
% Syntax : Number of clauses : 9 ( 7 unt; 1 nHn; 9 RR)
% Number of literals : 11 ( 0 equ; 5 neg)
% Maximal clause size : 2 ( 1 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 4 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 4 con; 0-2 aty)
% Number of variables : 0 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(3,axiom,
~ disjoint(singleton(skc4),skc5),
file('SET917+1.p',unknown),
[] ).
cnf(5,axiom,
equal(set_intersection2(u,v),set_intersection2(v,u)),
file('SET917+1.p',unknown),
[] ).
cnf(6,axiom,
( in(u,v)
| disjoint(singleton(u),v) ),
file('SET917+1.p',unknown),
[] ).
cnf(8,axiom,
~ equal(set_intersection2(singleton(skc4),skc5),singleton(skc4)),
file('SET917+1.p',unknown),
[] ).
cnf(10,axiom,
( ~ in(u,v)
| equal(set_intersection2(v,singleton(u)),singleton(u)) ),
file('SET917+1.p',unknown),
[] ).
cnf(11,plain,
~ equal(set_intersection2(skc5,singleton(skc4)),singleton(skc4)),
inference(rew,[status(thm),theory(equality)],[5,8]),
[iquote('0:Rew:5.0,8.0')] ).
cnf(12,plain,
in(skc4,skc5),
inference(res,[status(thm),theory(equality)],[6,3]),
[iquote('0:Res:6.1,3.0')] ).
cnf(14,plain,
~ in(skc4,skc5),
inference(res,[status(thm),theory(equality)],[10,11]),
[iquote('0:Res:10.1,11.0')] ).
cnf(15,plain,
$false,
inference(mrr,[status(thm)],[14,12]),
[iquote('0:MRR:14.0,12.0')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12 % Problem : SET917+1 : TPTP v8.1.0. Released v3.2.0.
% 0.07/0.13 % Command : run_spass %d %s
% 0.12/0.34 % Computer : n009.cluster.edu
% 0.12/0.34 % Model : x86_64 x86_64
% 0.12/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34 % Memory : 8042.1875MB
% 0.12/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34 % CPULimit : 300
% 0.12/0.34 % WCLimit : 600
% 0.12/0.34 % DateTime : Sun Jul 10 12:15:22 EDT 2022
% 0.12/0.34 % CPUTime :
% 0.19/0.43
% 0.19/0.43 SPASS V 3.9
% 0.19/0.43 SPASS beiseite: Proof found.
% 0.19/0.43 % SZS status Theorem
% 0.19/0.43 Problem: /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.19/0.43 SPASS derived 3 clauses, backtracked 0 clauses, performed 0 splits and kept 12 clauses.
% 0.19/0.43 SPASS allocated 85097 KBytes.
% 0.19/0.43 SPASS spent 0:00:00.08 on the problem.
% 0.19/0.43 0:00:00.03 for the input.
% 0.19/0.43 0:00:00.03 for the FLOTTER CNF translation.
% 0.19/0.43 0:00:00.00 for inferences.
% 0.19/0.43 0:00:00.00 for the backtracking.
% 0.19/0.43 0:00:00.00 for the reduction.
% 0.19/0.43
% 0.19/0.43
% 0.19/0.43 Here is a proof with depth 1, length 9 :
% 0.19/0.43 % SZS output start Refutation
% See solution above
% 0.19/0.43 Formulae used in the proof : t58_zfmisc_1 commutativity_k3_xboole_0 l28_zfmisc_1 l32_zfmisc_1
% 0.19/0.43
%------------------------------------------------------------------------------