85c5c870db
(ltl_to_tgba_fm): Add a new option "containment_checks" to enable some language containment checks (via emptiness checks) during the translation. This first attempt currently only use containment checks to merge states bisimulating each other. * src/tgbatest/ltl2tgba.cc: Bind this to option "-c". * src/tgbatest/spotlbtt.test: Check it.
132 lines
5.4 KiB
C++
132 lines
5.4 KiB
C++
// Copyright (C) 2003, 2004, 2005, 2006 Laboratoire d'Informatique de
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// Paris 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
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// Université Pierre et Marie Curie.
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//
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// This file is part of Spot, a model checking library.
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//
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// Spot is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// Spot is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Spot; see the file COPYING. If not, write to the Free
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// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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// 02111-1307, USA.
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#ifndef SPOT_TGBAALGOS_LTL2TGBA_FM_HH
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# define SPOT_TGBAALGOS_LTL2TGBA_FM_HH
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#include "ltlast/formula.hh"
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#include "tgba/tgbaexplicit.hh"
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#include "ltlvisit/apcollect.hh"
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#include "ltlvisit/reduce.hh"
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namespace spot
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{
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/// \brief Build a spot::tgba_explicit* from an LTL formula.
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/// \ingroup tgba_ltl
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///
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/// This is based on the following paper.
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/// \verbatim
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/// @InProceedings{couvreur.99.fm,
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/// author = {Jean-Michel Couvreur},
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/// title = {On-the-fly Verification of Temporal Logic},
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/// pages = {253--271},
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/// editor = {Jeannette M. Wing and Jim Woodcock and Jim Davies},
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/// booktitle = {Proceedings of the World Congress on Formal Methods in the
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/// Development of Computing Systems (FM'99)},
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/// publisher = {Springer-Verlag},
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/// series = {Lecture Notes in Computer Science},
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/// volume = {1708},
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/// year = {1999},
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/// address = {Toulouse, France},
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/// month = {September},
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/// isbn = {3-540-66587-0}
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/// }
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/// \endverbatim
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///
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/// \param f The formula to translate into an automaton.
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///
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/// \param dict The spot::bdd_dict the constructed automata should use.
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///
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/// \param exprop When set, the algorithm will consider all properties
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/// combinations possible on each state, in an attempt to reduce
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/// the non-determinism. The automaton will have the same size as
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/// without this option, but because the transition will be more
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/// deterministic, the product automaton will be smaller (or, at worse,
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/// equal).
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///
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/// \param symb_merge When false, states with the same symbolic
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/// representation (these are equivalent formulae) will not be
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/// merged.
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///
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/// \param branching_postponement When set, several transitions leaving
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/// from the same state with the same label (i.e., condition + acceptance
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/// conditions) will be merged. This correspond to an optimization
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/// described in the following paper.
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/// \verbatim
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/// @InProceedings{ sebastiani.03.charme,
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/// author = {Roberto Sebastiani and Stefano Tonetta},
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/// title = {"More Deterministic" vs. "Smaller" B{\"u}chi Automata for
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/// Efficient LTL Model Checking},
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/// booktitle = {Proceedings for the 12th Advanced Research Working
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/// Conference on Correct Hardware Design and Verification
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/// Methods (CHARME'03)},
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/// pages = {126--140},
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/// year = {2003},
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/// editor = {G. Goos and J. Hartmanis and J. van Leeuwen},
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/// volume = {2860},
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/// series = {Lectures Notes in Computer Science},
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/// month = {October},
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/// publisher = {Springer-Verlag}
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/// }
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/// \endverbatim
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///
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/// \param fair_loop_approx When set, a really simple characterization of
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/// unstable state is used to suppress all acceptance conditions from
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/// incoming transitions.
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///
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/// \param unobs When non-zero, the atomic propositions in the LTL formula
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/// are interpreted as events that exclude each other. The events in the
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/// formula are observable events, and \c unobs can be filled with
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/// additional unobservable events.
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///
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/// \param reduce_ltl If this parameter is set, the LTL formulae representing
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/// each state of the automaton will be simplified using spot::ltl::reduce()
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/// before computing the successor. \a reduce_ltl should specify the type
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/// of reduction to apply as documented for spot::ltl::reduce().
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/// This idea is taken from the following paper.
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/// \verbatim
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/// @InProceedings{ thirioux.02.fmics,
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/// author = {Xavier Thirioux},
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/// title = {Simple and Efficient Translation from {LTL} Formulas to
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/// {B\"u}chi Automata},
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/// booktitle = {Proceedings of the 7th International ERCIM Workshop in
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/// Formal Methods for Industrial Critical Systems (FMICS'02)},
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/// series = {Electronic Notes in Theoretical Computer Science},
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/// volume = {66(2)},
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/// publisher = {Elsevier},
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/// editor = {Rance Cleaveland and Hubert Garavel},
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/// year = {2002},
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/// month = jul,
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/// address = {M{\'a}laga, Spain}
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/// }
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/// \endverbatim
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///
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/// \return A spot::tgba_explicit that recognizes the language of \a f.
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tgba_explicit* ltl_to_tgba_fm(const ltl::formula* f, bdd_dict* dict,
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bool exprop = false, bool symb_merge = true,
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bool branching_postponement = false,
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bool fair_loop_approx = false,
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const ltl::atomic_prop_set* unobs = 0,
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int reduce_ltl = ltl::Reduce_None,
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bool containment_checks = false);
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}
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#endif // SPOT_TGBAALGOS_LTL2TGBA_FM_HH
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