%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : SET924+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp
% Command  : run_spass %d %s

% Computer : n007.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 05:29:50 EDT 2022

% Result   : Theorem 0.19s 0.43s
% Output   : Refutation 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    5
%            Number of leaves      :    4
% Syntax   : Number of clauses     :    9 (   4 unt;   1 nHn;   9 RR)
%            Number of literals    :   14 (   0 equ;   6 neg)
%            Maximal clause size   :    2 (   1 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    3 (   2 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(4,axiom,
    ( in(u,v)
    | equal(set_difference(singleton(u),v),singleton(u)) ),
    file('SET924+1.p',unknown),
    [] ).

cnf(5,axiom,
    ( ~ in(skc4,skc5)
    | equal(set_difference(singleton(skc4),skc5),singleton(skc4)) ),
    file('SET924+1.p',unknown),
    [] ).

cnf(6,axiom,
    ( ~ equal(set_difference(singleton(skc4),skc5),singleton(skc4))
    | in(skc4,skc5) ),
    file('SET924+1.p',unknown),
    [] ).

cnf(7,axiom,
    ( ~ in(u,v)
    | ~ equal(set_difference(singleton(u),v),singleton(u)) ),
    file('SET924+1.p',unknown),
    [] ).

cnf(8,plain,
    ( ~ equal(singleton(skc4),singleton(skc4))
    | in(skc4,skc5) ),
    inference(rew,[status(thm),theory(equality)],[4,6]),
    [iquote('0:Rew:4.1,6.0')] ).

cnf(9,plain,
    in(skc4,skc5),
    inference(obv,[status(thm),theory(equality)],[8]),
    [iquote('0:Obv:8.0')] ).

cnf(10,plain,
    equal(set_difference(singleton(skc4),skc5),singleton(skc4)),
    inference(mrr,[status(thm)],[5,9]),
    [iquote('0:MRR:5.0,9.0')] ).

cnf(14,plain,
    ~ in(skc4,skc5),
    inference(res,[status(thm),theory(equality)],[10,7]),
    [iquote('0:Res:10.0,7.0')] ).

cnf(15,plain,
    $false,
    inference(mrr,[status(thm)],[14,9]),
    [iquote('0:MRR:14.0,9.0')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SET924+1 : TPTP v8.1.0. Released v3.2.0.
% 0.07/0.13  % Command  : run_spass %d %s
% 0.13/0.34  % Computer : n007.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 600
% 0.13/0.34  % DateTime : Sun Jul 10 15:19:02 EDT 2022
% 0.13/0.34  % 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/sandbox/benchmark/theBenchmark.p 
% 0.19/0.43  SPASS derived 4 clauses, backtracked 0 clauses, performed 0 splits and kept 9 clauses.
% 0.19/0.43  SPASS allocated 85063 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  		0:00:00.02 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 : l34_zfmisc_1 t67_zfmisc_1
% 0.19/0.43  
%------------------------------------------------------------------------------