TSTP Solution File: FLD031-3 by SPASS---3.9

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%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : FLD031-3 : TPTP v8.1.0. Bugfixed v2.1.0.
% 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 : Sat Jul 16 02:28:24 EDT 2022

% Result   : Unsatisfiable 0.19s 0.42s
% Output   : Refutation 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    5
%            Number of leaves      :    8
% Syntax   : Number of clauses     :   20 (   9 unt;   1 nHn;  20 RR)
%            Number of literals    :   36 (   0 equ;  20 neg)
%            Maximal clause size   :    4 (   1 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    4 (   3 usr;   1 prp; 0-3 aty)
%            Number of functors    :   10 (  10 usr;   9 con; 0-1 aty)
%            Number of variables   :    0 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(1,axiom,
    defined(a),
    file('FLD031-3.p',unknown),
    [] ).

cnf(2,axiom,
    product(multiplicative_identity,a,multiplicative_identity),
    file('FLD031-3.p',unknown),
    [] ).

cnf(3,axiom,
    ~ sum__dfg(additive_identity,a,additive_identity),
    file('FLD031-3.p',unknown),
    [] ).

cnf(4,axiom,
    ~ product(multiplicative_identity,multiplicative_inverse(a),multiplicative_identity),
    file('FLD031-3.p',unknown),
    [] ).

cnf(11,axiom,
    ( ~ product(u,v,w)
    | ~ product(x,y,v)
    | ~ product(u,x,z)
    | product(z,y,w) ),
    file('FLD031-3.p',unknown),
    [] ).

cnf(12,axiom,
    ( ~ defined(u)
    | product(multiplicative_identity,u,u) ),
    file('FLD031-3.p',unknown),
    [] ).

cnf(13,axiom,
    ( ~ defined(u)
    | sum__dfg(additive_identity,u,additive_identity)
    | product(multiplicative_inverse(u),u,multiplicative_identity) ),
    file('FLD031-3.p',unknown),
    [] ).

cnf(14,axiom,
    ( ~ product(u,v,w)
    | product(v,u,w) ),
    file('FLD031-3.p',unknown),
    [] ).

cnf(35,plain,
    ( ~ product(u,v,a)
    | ~ product(multiplicative_identity,u,w)
    | product(w,v,multiplicative_identity) ),
    inference(res,[status(thm),theory(equality)],[2,11]),
    [iquote('0:Res:2.0,11.2')] ).

cnf(44,plain,
    ( ~ defined(a)
    | product(multiplicative_inverse(a),a,multiplicative_identity) ),
    inference(res,[status(thm),theory(equality)],[13,3]),
    [iquote('0:Res:13.2,3.0')] ).

cnf(53,plain,
    ( ~ product(u,v,multiplicative_identity)
    | ~ product(u,w,multiplicative_identity)
    | ~ product(w,multiplicative_inverse(a),v) ),
    inference(res,[status(thm),theory(equality)],[11,4]),
    [iquote('0:Res:11.3,4.0')] ).

cnf(56,plain,
    product(multiplicative_inverse(a),a,multiplicative_identity),
    inference(mrr,[status(thm)],[44,1]),
    [iquote('0:MRR:44.0,1.0')] ).

cnf(58,plain,
    ( ~ product(a,u,a)
    | product(multiplicative_identity,u,multiplicative_identity) ),
    inference(res,[status(thm),theory(equality)],[2,35]),
    [iquote('0:Res:2.0,35.0')] ).

cnf(71,plain,
    ( ~ product(multiplicative_identity,u,multiplicative_identity)
    | ~ product(a,multiplicative_inverse(a),u) ),
    inference(res,[status(thm),theory(equality)],[2,53]),
    [iquote('0:Res:2.0,53.0')] ).

cnf(86,plain,
    product(a,multiplicative_inverse(a),multiplicative_identity),
    inference(res,[status(thm),theory(equality)],[56,14]),
    [iquote('0:Res:56.0,14.0')] ).

cnf(88,plain,
    ( ~ defined(u)
    | product(u,multiplicative_identity,u) ),
    inference(res,[status(thm),theory(equality)],[12,14]),
    [iquote('0:Res:12.1,14.0')] ).

cnf(91,plain,
    ( ~ defined(a)
    | product(multiplicative_identity,multiplicative_identity,multiplicative_identity) ),
    inference(res,[status(thm),theory(equality)],[88,58]),
    [iquote('0:Res:88.1,58.0')] ).

cnf(93,plain,
    product(multiplicative_identity,multiplicative_identity,multiplicative_identity),
    inference(ssi,[status(thm)],[91,1]),
    [iquote('0:SSi:91.0,1.0')] ).

cnf(101,plain,
    ~ product(multiplicative_identity,multiplicative_identity,multiplicative_identity),
    inference(res,[status(thm),theory(equality)],[86,71]),
    [iquote('0:Res:86.0,71.1')] ).

cnf(102,plain,
    $false,
    inference(mrr,[status(thm)],[101,93]),
    [iquote('0:MRR:101.0,93.0')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : FLD031-3 : TPTP v8.1.0. Bugfixed v2.1.0.
% 0.11/0.13  % Command  : run_spass %d %s
% 0.13/0.34  % Computer : n020.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 : Mon Jun  6 12:06:07 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 0.19/0.42  
% 0.19/0.42  SPASS V 3.9 
% 0.19/0.42  SPASS beiseite: Proof found.
% 0.19/0.42  % SZS status Theorem
% 0.19/0.42  Problem: /export/starexec/sandbox2/benchmark/theBenchmark.p 
% 0.19/0.42  SPASS derived 60 clauses, backtracked 0 clauses, performed 0 splits and kept 70 clauses.
% 0.19/0.42  SPASS allocated 75692 KBytes.
% 0.19/0.42  SPASS spent	0:00:00.07 on the problem.
% 0.19/0.42  		0:00:00.04 for the input.
% 0.19/0.42  		0:00:00.00 for the FLOTTER CNF translation.
% 0.19/0.42  		0:00:00.00 for inferences.
% 0.19/0.42  		0:00:00.00 for the backtracking.
% 0.19/0.42  		0:00:00.00 for the reduction.
% 0.19/0.42  
% 0.19/0.42  
% 0.19/0.42  Here is a proof with depth 3, length 20 :
% 0.19/0.42  % SZS output start Refutation
% See solution above
% 0.19/0.42  Formulae used in the proof : a_is_defined product_2 not_sum_3 not_product_4 associativity_multiplication_2 existence_of_identity_multiplication existence_of_inverse_multiplication commutativity_multiplication
% 0.19/0.42  
%------------------------------------------------------------------------------