%------------------------------------------------------------------------------
% File     : Metis---2.4
% Problem  : SYN327-1 : TPTP v8.1.0. Released v1.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : metis --show proof --show saturation %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 : Thu Jul 21 09:01:19 EDT 2022

% Result   : Unsatisfiable 0.12s 0.34s
% Output   : CNFRefutation 0.12s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    5
%            Number of leaves      :    3
% Syntax   : Number of clauses     :   11 (   4 unt;   2 nHn;  10 RR)
%            Number of literals    :   20 (   0 equ;  10 neg)
%            Maximal clause size   :    3 (   1 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    2 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :    2 (   2 usr;   1 con; 0-1 aty)
%            Number of variables   :    3 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(clause1,negated_conjecture,
    ( f(Y,a)
    | f(a,Y) ) ).

cnf(clause4,negated_conjecture,
    ( f(a,z(Y))
    | ~ f(Y,a)
    | ~ f(z(Y),Y) ) ).

cnf(clause5,negated_conjecture,
    ( ~ f(a,Y)
    | ~ f(a,z(Y)) ) ).

cnf(refute_0_0,plain,
    ( ~ f(a,a)
    | ~ f(a,z(a)) ),
    inference(subst,[],[clause5:[bind(Y,$fot(a))]]) ).

cnf(refute_0_1,plain,
    ( f(a,z(a))
    | f(z(a),a) ),
    inference(subst,[],[clause1:[bind(Y,$fot(z(a)))]]) ).

cnf(refute_0_2,plain,
    ( ~ f(a,a)
    | ~ f(z(a),a)
    | f(a,z(a)) ),
    inference(subst,[],[clause4:[bind(Y,$fot(a))]]) ).

cnf(refute_0_3,plain,
    ( ~ f(a,a)
    | f(a,z(a)) ),
    inference(resolve,[$cnf( f(z(a),a) )],[refute_0_1,refute_0_2]) ).

cnf(refute_0_4,plain,
    f(a,a),
    inference(subst,[],[clause1:[bind(Y,$fot(a))]]) ).

cnf(refute_0_5,plain,
    f(a,z(a)),
    inference(resolve,[$cnf( f(a,a) )],[refute_0_4,refute_0_3]) ).

cnf(refute_0_6,plain,
    ~ f(a,a),
    inference(resolve,[$cnf( f(a,z(a)) )],[refute_0_5,refute_0_0]) ).

cnf(refute_0_7,plain,
    $false,
    inference(resolve,[$cnf( f(a,a) )],[refute_0_4,refute_0_6]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SYN327-1 : TPTP v8.1.0. Released v1.2.0.
% 0.07/0.13  % Command  : metis --show proof --show saturation %s
% 0.12/0.34  % Computer : n014.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 : Tue Jul 12 05:46:49 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.12/0.34  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 0.12/0.34  % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.12/0.34  
% 0.12/0.34  % SZS output start CNFRefutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 0.12/0.35  
%------------------------------------------------------------------------------