// -*- coding: utf-8 -*-
// Copyright (C) 2013, 2014 Laboratoire de Recherche et Developpement
// de l'Epita (LRDE).
// Copyright (C) 2004, 2005  Laboratoire d'Informatique de Paris 6 (LIP6),
// département Systèmes Répartis Coopératifs (SRC), Université Pierre
// et Marie Curie.
//
// This file is part of Spot, a model checking library.
//
// Spot is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// Spot is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#pragma once

#include "misc/optionmap.hh"
#include "twa/fwd.hh"
#include "emptiness.hh"

namespace spot
{
  /// \brief Emptiness check based on Geldenhuys and Valmari's
  /// TACAS'04 paper.
  /// \ingroup emptiness_check_algorithms
  /// \pre The automaton \a a must have at most one acceptance condition.
  ///
  /// The original algorithm, coming from the following paper, has only
  /// been slightly modified to work on transition-based automata.
  /** \verbatim
      @InProceedings{geldenhuys.04.tacas,
        author  = {Jaco Geldenhuys and Antti Valmari},
        title   = {Tarjan's Algorithm Makes On-the-Fly {LTL} Verification
                  More Efficient},
        booktitle = {Proceedings of the 10th International Conference on Tools
                  and Algorithms for the Construction and Analysis of Systems
                  (TACAS'04)},
        editor  = {Kurt Jensen and Andreas Podelski},
        pages   = {205--219},
        year    = {2004},
        publisher = {Springer-Verlag},
        series  = {Lecture Notes in Computer Science},
        volume  = {2988},
        isbn    = {3-540-21299-X}
      }
      \endverbatim */
  SPOT_API emptiness_check_ptr
  explicit_gv04_check(const const_twa_ptr& a, option_map o = option_map());
}