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tgbaalgos/gtec/ce.hh

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00001 // Copyright (C) 2004  Laboratoire d'Informatique de Paris 6 (LIP6),
00002 // département Systèmes Répartis Coopératifs (SRC), Université Pierre
00003 // et Marie Curie.
00004 //
00005 // This file is part of Spot, a model checking library.
00006 //
00007 // Spot is free software; you can redistribute it and/or modify it
00008 // under the terms of the GNU General Public License as published by
00009 // the Free Software Foundation; either version 2 of the License, or
00010 // (at your option) any later version.
00011 //
00012 // Spot is distributed in the hope that it will be useful, but WITHOUT
00013 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
00014 // or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
00015 // License for more details.
00016 //
00017 // You should have received a copy of the GNU General Public License
00018 // along with Spot; see the file COPYING.  If not, write to the Free
00019 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
00020 // 02111-1307, USA.
00021 
00022 #ifndef SPOT_TGBAALGOS_GTEC_CE_HH
00023 # define SPOT_TGBAALGOS_GTEC_CE_HH
00024 
00025 #include "status.hh"
00026 #include "explscc.hh"
00027 
00028 namespace spot
00029 {
00031   class counter_example
00032   {
00033   public:
00034     counter_example(const emptiness_check_status* ecs,
00035                     const explicit_connected_component_factory*
00036                     eccf = connected_component_hash_set_factory::instance());
00037 
00038     typedef std::pair<const state*, bdd> state_proposition;
00039     typedef std::list<const state*> state_sequence;
00040     typedef std::list<state_proposition> cycle_path;
00041     state_sequence suffix;
00042     cycle_path period;
00043 
00048     std::ostream& print_result(std::ostream& os,
00049                                const tgba* restrict = 0) const;
00050 
00052     void print_stats(std::ostream& os) const;
00053 
00054   protected:
00057     void accepting_path (const explicit_connected_component* scc,
00058                          const state* start, bdd acc_to_traverse);
00059 
00062     void complete_cycle(const explicit_connected_component* scc,
00063                         const state* from, const state* to);
00064 
00065   private:
00066     const emptiness_check_status* ecs_;
00067   };
00068 }
00069 
00070 #endif // SPOT_TGBAALGOS_GTEC_CE_HH

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