%------------------------------------------------------------------------------
% File     : Metis---2.4
% Problem  : SWC349-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : metis --show proof --show saturation %s

% Computer : n026.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 21:27:51 EDT 2022

% Result   : Unsatisfiable 0.19s 0.41s
% Output   : CNFRefutation 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :    9
% Syntax   : Number of clauses     :   19 (  10 unt;   0 nHn;  18 RR)
%            Number of literals    :   31 (  18 equ;  14 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of predicates  :    5 (   2 usr;   1 prp; 0-2 aty)
%            Number of functors    :    4 (   4 usr;   4 con; 0-0 aty)
%            Number of variables   :    6 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(clause60,axiom,
    ( ~ ssList(U)
    | frontsegP(U,nil) ) ).

cnf(co1_2,negated_conjecture,
    ssList(sk2) ).

cnf(co1_5,negated_conjecture,
    nil = sk3 ).

cnf(co1_7,negated_conjecture,
    sk1 = sk3 ).

cnf(co1_9,negated_conjecture,
    ~ frontsegP(sk2,sk1) ).

cnf(refute_0_0,plain,
    ( ~ ssList(sk2)
    | frontsegP(sk2,nil) ),
    inference(subst,[],[clause60:[bind(U,$fot(sk2))]]) ).

cnf(refute_0_1,plain,
    frontsegP(sk2,nil),
    inference(resolve,[$cnf( ssList(sk2) )],[co1_2,refute_0_0]) ).

cnf(refute_0_2,plain,
    X = X,
    introduced(tautology,[refl,[$fot(X)]]) ).

cnf(refute_0_3,plain,
    ( X != X
    | X != Y
    | Y = X ),
    introduced(tautology,[equality,[$cnf( $equal(X,X) ),[0],$fot(Y)]]) ).

cnf(refute_0_4,plain,
    ( X != Y
    | Y = X ),
    inference(resolve,[$cnf( $equal(X,X) )],[refute_0_2,refute_0_3]) ).

cnf(refute_0_5,plain,
    ( nil != sk3
    | sk3 = nil ),
    inference(subst,[],[refute_0_4:[bind(X,$fot(nil)),bind(Y,$fot(sk3))]]) ).

cnf(refute_0_6,plain,
    sk3 = nil,
    inference(resolve,[$cnf( $equal(nil,sk3) )],[co1_5,refute_0_5]) ).

cnf(refute_0_7,plain,
    ( sk1 != sk3
    | sk3 != nil
    | sk1 = nil ),
    introduced(tautology,[equality,[$cnf( ~ $equal(sk1,nil) ),[0],$fot(sk3)]]) ).

cnf(refute_0_8,plain,
    ( sk1 != sk3
    | sk1 = nil ),
    inference(resolve,[$cnf( $equal(sk3,nil) )],[refute_0_6,refute_0_7]) ).

cnf(refute_0_9,plain,
    sk1 = nil,
    inference(resolve,[$cnf( $equal(sk1,sk3) )],[co1_7,refute_0_8]) ).

cnf(refute_0_10,plain,
    ( sk1 != nil
    | ~ frontsegP(sk2,nil)
    | frontsegP(sk2,sk1) ),
    introduced(tautology,[equality,[$cnf( ~ frontsegP(sk2,sk1) ),[1],$fot(nil)]]) ).

cnf(refute_0_11,plain,
    ( ~ frontsegP(sk2,nil)
    | frontsegP(sk2,sk1) ),
    inference(resolve,[$cnf( $equal(sk1,nil) )],[refute_0_9,refute_0_10]) ).

cnf(refute_0_12,plain,
    ~ frontsegP(sk2,nil),
    inference(resolve,[$cnf( frontsegP(sk2,sk1) )],[refute_0_11,co1_9]) ).

cnf(refute_0_13,plain,
    $false,
    inference(resolve,[$cnf( frontsegP(sk2,nil) )],[refute_0_1,refute_0_12]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : SWC349-1 : TPTP v8.1.0. Released v2.4.0.
% 0.11/0.13  % Command  : metis --show proof --show saturation %s
% 0.13/0.34  % Computer : n026.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 Jun 12 09:32:50 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.13/0.34  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 0.19/0.41  % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.19/0.41  
% 0.19/0.41  % SZS output start CNFRefutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 0.19/0.41  
%------------------------------------------------------------------------------