%------------------------------------------------------------------------------
% File     : Metis---2.4
% Problem  : GRP038-3 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : metis --show proof --show saturation %s

% Computer : n018.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 : Sat Jul 16 10:32:36 EDT 2022

% Result   : Unsatisfiable 1.07s 1.23s
% Output   : CNFRefutation 1.07s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    5
%            Number of leaves      :    5
% Syntax   : Number of clauses     :   10 (   6 unt;   0 nHn;  10 RR)
%            Number of literals    :   19 (   0 equ;  10 neg)
%            Maximal clause size   :    4 (   1 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    3 (   2 usr;   1 prp; 0-3 aty)
%            Number of functors    :    4 (   4 usr;   3 con; 0-1 aty)
%            Number of variables   :    3 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(closure_of_product_and_inverse,axiom,
    ( ~ subgroup_member(A)
    | ~ subgroup_member(B)
    | ~ product(A,inverse(B),C)
    | subgroup_member(C) ) ).

cnf(a_is_in_subgroup,hypothesis,
    subgroup_member(a) ).

cnf(b_is_in_subgroup,hypothesis,
    subgroup_member(b) ).

cnf(a_times_inverse_b_is_c,hypothesis,
    product(a,inverse(b),c) ).

cnf(prove_c_is_in_subgroup,negated_conjecture,
    ~ subgroup_member(c) ).

cnf(refute_0_0,plain,
    ( ~ product(a,inverse(b),c)
    | ~ subgroup_member(a)
    | ~ subgroup_member(b)
    | subgroup_member(c) ),
    inference(subst,[],[closure_of_product_and_inverse:[bind(A,$fot(a)),bind(B,$fot(b)),bind(C,$fot(c))]]) ).

cnf(refute_0_1,plain,
    ( ~ subgroup_member(a)
    | ~ subgroup_member(b)
    | subgroup_member(c) ),
    inference(resolve,[$cnf( product(a,inverse(b),c) )],[a_times_inverse_b_is_c,refute_0_0]) ).

cnf(refute_0_2,plain,
    ( ~ subgroup_member(b)
    | subgroup_member(c) ),
    inference(resolve,[$cnf( subgroup_member(a) )],[a_is_in_subgroup,refute_0_1]) ).

cnf(refute_0_3,plain,
    subgroup_member(c),
    inference(resolve,[$cnf( subgroup_member(b) )],[b_is_in_subgroup,refute_0_2]) ).

cnf(refute_0_4,plain,
    $false,
    inference(resolve,[$cnf( subgroup_member(c) )],[refute_0_3,prove_c_is_in_subgroup]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.13  % Problem  : GRP038-3 : TPTP v8.1.0. Released v1.0.0.
% 0.07/0.14  % Command  : metis --show proof --show saturation %s
% 0.14/0.35  % Computer : n018.cluster.edu
% 0.14/0.35  % Model    : x86_64 x86_64
% 0.14/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35  % Memory   : 8042.1875MB
% 0.14/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35  % CPULimit : 300
% 0.14/0.35  % WCLimit  : 600
% 0.14/0.35  % DateTime : Tue Jun 14 06:57:58 EDT 2022
% 0.14/0.35  % CPUTime  : 
% 0.14/0.36  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 1.07/1.23  % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p
% 1.07/1.23  
% 1.07/1.23  % SZS output start CNFRefutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 1.07/1.23  
%------------------------------------------------------------------------------