%------------------------------------------------------------------------------
% File     : REL044-1 : TPTP v9.0.0. Released v4.0.0.
% Domain   : Relation Algebra
% Problem  : Shunting rule
% Version  : [Mad95] (equational) axioms.
% English  :

% Refs     : [Mad95] Maddux (1995), Relation-Algebraic Semantics
%          : [Hoe08] Hoefner (2008), Email to G. Sutcliffe
% Source   : [Hoe08]
% Names    :

% Status   : Unsatisfiable
% Rating   : 0.73 v9.0.0, 0.82 v8.2.0, 0.88 v8.1.0, 0.85 v7.5.0, 0.83 v7.4.0, 0.87 v7.3.0, 0.84 v7.1.0, 0.83 v7.0.0, 0.84 v6.3.0, 0.82 v6.2.0, 0.79 v6.1.0, 0.88 v6.0.0, 0.90 v5.5.0, 0.95 v5.4.0, 0.87 v5.3.0, 0.83 v5.2.0, 0.79 v5.1.0, 0.80 v5.0.0, 0.86 v4.1.0, 0.82 v4.0.1, 0.86 v4.0.0
% Syntax   : Number of clauses     :   15 (  15 unt;   0 nHn;   2 RR)
%            Number of literals    :   15 (  15 equ;   1 neg)
%            Maximal clause size   :    1 (   1 avg)
%            Maximal term depth    :    5 (   2 avg)
%            Number of predicates  :    1 (   0 usr;   0 prp; 2-2 aty)
%            Number of functors    :   11 (  11 usr;   6 con; 0-2 aty)
%            Number of variables   :   25 (   0 sgn)
% SPC      : CNF_UNS_RFO_PEQ_UEQ

% Comments : tptp2X -f tptp:short -t cnf:otter REL044+1.p
%------------------------------------------------------------------------------
%----Include axioms of relation algebra
include('Axioms/REL001-0.ax').
%------------------------------------------------------------------------------
cnf(goals_14,negated_conjecture,
    join(composition(complement(sk1),sk2),complement(sk3)) = complement(sk3) ).

cnf(goals_15,negated_conjecture,
    join(composition(sk3,converse(sk2)),sk1) != sk1 ).

%------------------------------------------------------------------------------