TSTP Solution File: GRP169-1 by SPASS---3.9

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%------------------------------------------------------------------------------
% File     : SPASS---3.9
% Problem  : GRP169-1 : TPTP v8.1.0. Bugfixed v1.2.1.
% Transfm  : none
% Format   : tptp
% Command  : run_spass %d %s

% Computer : n006.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 11:46:03 EDT 2022

% Result   : Unsatisfiable 0.98s 1.16s
% Output   : Refutation 0.98s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    7
%            Number of leaves      :    8
% Syntax   : Number of clauses     :   21 (  21 unt;   0 nHn;  21 RR)
%            Number of literals    :   21 (   0 equ;   1 neg)
%            Maximal clause size   :    1 (   1 avg)
%            Maximal term depth    :    5 (   2 avg)
%            Number of predicates  :    2 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :    9 (   9 usr;   6 con; 0-2 aty)
%            Number of variables   :    0 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(1,axiom,
    equal(least_upper_bound(inverse(a),inverse(b)),inverse(b)),
    file('GRP169-1.p',unknown),
    [] ).

cnf(2,axiom,
    ~ equal(least_upper_bound(a,b),a),
    file('GRP169-1.p',unknown),
    [] ).

cnf(3,axiom,
    equal(multiply(identity,u),u),
    file('GRP169-1.p',unknown),
    [] ).

cnf(4,axiom,
    equal(multiply(inverse(u),u),identity),
    file('GRP169-1.p',unknown),
    [] ).

cnf(5,axiom,
    equal(multiply(multiply(u,v),w),multiply(u,multiply(v,w))),
    file('GRP169-1.p',unknown),
    [] ).

cnf(7,axiom,
    equal(least_upper_bound(u,v),least_upper_bound(v,u)),
    file('GRP169-1.p',unknown),
    [] ).

cnf(14,axiom,
    equal(multiply(u,least_upper_bound(v,w)),least_upper_bound(multiply(u,v),multiply(u,w))),
    file('GRP169-1.p',unknown),
    [] ).

cnf(16,axiom,
    equal(multiply(least_upper_bound(u,v),w),least_upper_bound(multiply(u,w),multiply(v,w))),
    file('GRP169-1.p',unknown),
    [] ).

cnf(335,plain,
    equal(multiply(inverse(u),multiply(u,v)),multiply(identity,v)),
    inference(spr,[status(thm),theory(equality)],[4,5]),
    [iquote('0:SpR:4.0,5.0')] ).

cnf(336,plain,
    equal(multiply(inverse(u),multiply(u,v)),v),
    inference(rew,[status(thm),theory(equality)],[3,335]),
    [iquote('0:Rew:3.0,335.0')] ).

cnf(339,plain,
    equal(multiply(inverse(inverse(u)),v),multiply(u,v)),
    inference(spr,[status(thm),theory(equality)],[336]),
    [iquote('0:SpR:336.0,336.0')] ).

cnf(342,plain,
    equal(multiply(inverse(inverse(u)),identity),u),
    inference(spr,[status(thm),theory(equality)],[4,336]),
    [iquote('0:SpR:4.0,336.0')] ).

cnf(344,plain,
    equal(multiply(u,identity),u),
    inference(rew,[status(thm),theory(equality)],[339,342]),
    [iquote('0:Rew:339.0,342.0')] ).

cnf(363,plain,
    equal(multiply(u,multiply(inverse(u),v)),v),
    inference(spr,[status(thm),theory(equality)],[339,336]),
    [iquote('0:SpR:339.0,336.0')] ).

cnf(465,plain,
    equal(least_upper_bound(multiply(inverse(a),u),multiply(inverse(b),u)),multiply(inverse(b),u)),
    inference(spr,[status(thm),theory(equality)],[1,16]),
    [iquote('0:SpR:1.0,16.0')] ).

cnf(6573,plain,
    equal(least_upper_bound(multiply(inverse(a),b),identity),identity),
    inference(spr,[status(thm),theory(equality)],[4,465]),
    [iquote('0:SpR:4.0,465.0')] ).

cnf(6597,plain,
    equal(least_upper_bound(identity,multiply(inverse(a),b)),identity),
    inference(rew,[status(thm),theory(equality)],[7,6573]),
    [iquote('0:Rew:7.0,6573.0')] ).

cnf(6654,plain,
    equal(least_upper_bound(multiply(u,identity),multiply(u,multiply(inverse(a),b))),multiply(u,identity)),
    inference(spr,[status(thm),theory(equality)],[6597,14]),
    [iquote('0:SpR:6597.0,14.0')] ).

cnf(6673,plain,
    equal(least_upper_bound(u,multiply(u,multiply(inverse(a),b))),u),
    inference(rew,[status(thm),theory(equality)],[344,6654]),
    [iquote('0:Rew:344.0,6654.0')] ).

cnf(6795,plain,
    equal(least_upper_bound(a,b),a),
    inference(spr,[status(thm),theory(equality)],[363,6673]),
    [iquote('0:SpR:363.0,6673.0')] ).

cnf(6798,plain,
    $false,
    inference(mrr,[status(thm)],[6795,2]),
    [iquote('0:MRR:6795.0,2.0')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : GRP169-1 : TPTP v8.1.0. Bugfixed v1.2.1.
% 0.03/0.13  % Command  : run_spass %d %s
% 0.12/0.33  % Computer : n006.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 : Mon Jun 13 15:31:42 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.98/1.16  
% 0.98/1.16  SPASS V 3.9 
% 0.98/1.16  SPASS beiseite: Proof found.
% 0.98/1.16  % SZS status Theorem
% 0.98/1.16  Problem: /export/starexec/sandbox2/benchmark/theBenchmark.p 
% 0.98/1.16  SPASS derived 4487 clauses, backtracked 0 clauses, performed 0 splits and kept 621 clauses.
% 0.98/1.16  SPASS allocated 68637 KBytes.
% 0.98/1.16  SPASS spent	0:00:00.79 on the problem.
% 0.98/1.16  		0:00:00.04 for the input.
% 0.98/1.16  		0:00:00.00 for the FLOTTER CNF translation.
% 0.98/1.16  		0:00:00.03 for inferences.
% 0.98/1.16  		0:00:00.00 for the backtracking.
% 0.98/1.16  		0:00:00.69 for the reduction.
% 0.98/1.16  
% 0.98/1.16  
% 0.98/1.16  Here is a proof with depth 4, length 21 :
% 0.98/1.16  % SZS output start Refutation
% See solution above
% 0.98/1.16  Formulae used in the proof : p02a_1 prove_p02a left_identity left_inverse associativity symmetry_of_lub monotony_lub1 monotony_lub2
% 0.98/1.16  
%------------------------------------------------------------------------------