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