TSTP Solution File: NUN060+2 by SPASS---3.9

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%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : NUN060+2 : TPTP v8.1.0. Released v7.3.0.
% Transfm  : none
% Format   : tptp
% Command  : run_spass %d %s

% Computer : n020.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 : Mon Jul 18 16:38:43 EDT 2022

% Result   : Theorem 0.46s 0.66s
% Output   : Refutation 0.46s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :   10
% Syntax   : Number of clauses     :   26 (  11 unt;   3 nHn;  26 RR)
%            Number of literals    :   54 (   0 equ;  35 neg)
%            Maximal clause size   :    6 (   2 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    8 (   7 usr;   1 prp; 0-4 aty)
%            Number of functors    :   13 (  13 usr;   8 con; 0-2 aty)
%            Number of variables   :    0 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(1,axiom,
    r1(skf22(u)),
    file('NUN060+2.p',unknown),
    [] ).

cnf(6,axiom,
    r2(u,skf20(v,u)),
    file('NUN060+2.p',unknown),
    [] ).

cnf(8,axiom,
    ( equal(u,skc1)
    | skP0(skc1,u) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(9,axiom,
    r3(u,v,skf18(v,u)),
    file('NUN060+2.p',unknown),
    [] ).

cnf(13,axiom,
    ( ~ r1(u)
    | ~ skP0(v,u) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(21,axiom,
    ( equal(u,skf13(v))
    | skP1(skf13(v),u,v) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(22,axiom,
    ( ~ r2(u,v)
    | ~ skP1(w,v,u) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(27,axiom,
    ( ~ r3(u,v,w)
    | ~ skP2(x,w,v,u) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(31,axiom,
    ( equal(u,skf14(v,w))
    | skP2(skf14(v,w),u,w,v) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(33,axiom,
    ( ~ r1(u)
    | ~ r2(v,w)
    | ~ r2(x,v)
    | ~ r2(y,x)
    | ~ r3(z,w,x1)
    | ~ r2(u,y) ),
    file('NUN060+2.p',unknown),
    [] ).

cnf(40,plain,
    ( ~ r1(u)
    | ~ r2(u,v)
    | ~ r2(v,w)
    | ~ r2(skf20(x,w),y)
    | ~ r3(z,y,x1) ),
    inference(res,[status(thm),theory(equality)],[6,33]),
    [iquote('0:Res:6.0,33.2')] ).

cnf(53,plain,
    ( ~ r1(u)
    | equal(u,skc1) ),
    inference(res,[status(thm),theory(equality)],[8,13]),
    [iquote('0:Res:8.1,13.1')] ).

cnf(55,plain,
    equal(skf22(u),skc1),
    inference(ems,[status(thm)],[53,1]),
    [iquote('0:EmS:53.0,1.0')] ).

cnf(58,plain,
    r1(skc1),
    inference(rew,[status(thm),theory(equality)],[55,1]),
    [iquote('0:Rew:55.0,1.0')] ).

cnf(87,plain,
    ( ~ r2(u,v)
    | equal(v,skf13(u)) ),
    inference(res,[status(thm),theory(equality)],[21,22]),
    [iquote('0:Res:21.1,22.1')] ).

cnf(88,plain,
    equal(skf20(u,v),skf13(v)),
    inference(res,[status(thm),theory(equality)],[6,87]),
    [iquote('0:Res:6.0,87.0')] ).

cnf(95,plain,
    r2(u,skf13(u)),
    inference(rew,[status(thm),theory(equality)],[88,6]),
    [iquote('0:Rew:88.0,6.0')] ).

cnf(98,plain,
    ( ~ r1(u)
    | ~ r2(u,v)
    | ~ r2(v,w)
    | ~ r2(skf13(w),x)
    | ~ r3(y,x,z) ),
    inference(rew,[status(thm),theory(equality)],[88,40]),
    [iquote('0:Rew:88.0,40.3')] ).

cnf(381,plain,
    ( ~ r3(u,v,w)
    | equal(w,skf14(u,v)) ),
    inference(res,[status(thm),theory(equality)],[31,27]),
    [iquote('0:Res:31.1,27.1')] ).

cnf(406,plain,
    equal(skf18(u,v),skf14(v,u)),
    inference(res,[status(thm),theory(equality)],[9,381]),
    [iquote('0:Res:9.0,381.0')] ).

cnf(418,plain,
    r3(u,v,skf14(u,v)),
    inference(rew,[status(thm),theory(equality)],[406,9]),
    [iquote('0:Rew:406.0,9.0')] ).

cnf(718,plain,
    ( ~ r1(u)
    | ~ r2(u,v)
    | ~ r2(v,w)
    | ~ r3(x,skf13(skf13(w)),y) ),
    inference(res,[status(thm),theory(equality)],[95,98]),
    [iquote('0:Res:95.0,98.3')] ).

cnf(1270,plain,
    ( ~ r1(u)
    | ~ r2(u,v)
    | ~ r2(v,w) ),
    inference(res,[status(thm),theory(equality)],[418,718]),
    [iquote('0:Res:418.0,718.3')] ).

cnf(1794,plain,
    ( ~ r1(u)
    | ~ r2(skf13(u),v) ),
    inference(res,[status(thm),theory(equality)],[95,1270]),
    [iquote('0:Res:95.0,1270.1')] ).

cnf(1818,plain,
    ~ r1(u),
    inference(res,[status(thm),theory(equality)],[95,1794]),
    [iquote('0:Res:95.0,1794.1')] ).

cnf(1821,plain,
    $false,
    inference(unc,[status(thm)],[1818,58]),
    [iquote('0:UnC:1818.0,58.0')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.11  % Problem  : NUN060+2 : TPTP v8.1.0. Released v7.3.0.
% 0.04/0.12  % Command  : run_spass %d %s
% 0.12/0.33  % Computer : n020.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 : Thu Jun  2 10:02:23 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 0.46/0.66  
% 0.46/0.66  SPASS V 3.9 
% 0.46/0.66  SPASS beiseite: Proof found.
% 0.46/0.66  % SZS status Theorem
% 0.46/0.66  Problem: /export/starexec/sandbox2/benchmark/theBenchmark.p 
% 0.46/0.66  SPASS derived 1367 clauses, backtracked 0 clauses, performed 0 splits and kept 647 clauses.
% 0.46/0.66  SPASS allocated 99300 KBytes.
% 0.46/0.66  SPASS spent	0:00:00.31 on the problem.
% 0.46/0.66  		0:00:00.04 for the input.
% 0.46/0.66  		0:00:00.03 for the FLOTTER CNF translation.
% 0.46/0.66  		0:00:00.02 for inferences.
% 0.46/0.66  		0:00:00.00 for the backtracking.
% 0.46/0.66  		0:00:00.20 for the reduction.
% 0.46/0.66  
% 0.46/0.66  
% 0.46/0.66  Here is a proof with depth 5, length 26 :
% 0.46/0.66  % SZS output start Refutation
% See solution above
% 0.46/0.66  Formulae used in the proof : axiom_4a axiom_2a axiom_1 axiom_1a axiom_2 axiom_3 greq4
% 0.46/0.66  
%------------------------------------------------------------------------------