spot/src/tgbaalgos/dtbasat.hh
Alexandre Duret-Lutz edb220af6a dtbasat,dtgbasat: rewrite using the tgba_digraph interface
This gets rid of many state*/int conversions.  We now use scc_info
instead of scc_map.  Finally the loops are now all 0-based.

* src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh (weak_sccs): New
method.
* src/tgbaalgos/dtbasat.cc, src/tgbaalgos/dtbasat.hh,
src/tgbaalgos/dtgbasat.cc, src/tgbaalgos/dtgbasat.hh: Use the
tgba_digraph interface.
* src/tgbatest/ltl2tgba.cc: Adjust calls.
2014-08-20 16:18:35 +02:00

69 lines
2.6 KiB
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// -*- coding: utf-8 -*-
// Copyright (C) 2013, 2014 Laboratoire de Recherche et Développement
// de l'Epita.
//
// 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/>.
#ifndef SPOT_TGBAALGOS_DTBASAT_HH
# define SPOT_TGBAALGOS_DTBASAT_HH
#include "tgba/tgbagraph.hh"
namespace spot
{
/// \brief Attempt to synthetize an equivalent deterministic TBA
/// with a SAT solver.
///
/// \param a the input TGBA. It should have only one acceptance
/// set and be deterministic. I.e., it should be a deterministic TBA.
///
/// \param target_state_number the desired number of states wanted
/// in the resulting automaton. The result may have less than \a
/// target_state_number reachable states.
///
/// \param state_based set to true to force all outgoing transitions
/// of a state to share the same acceptance condition, effectively
/// turning the TBA into a BA.
///
/// If no equivalent deterministic TBA with \a target_state_number
/// states is found, a null pointer
SPOT_API tgba_digraph_ptr
dtba_sat_synthetize(const const_tgba_digraph_ptr& a,
int target_state_number,
bool state_based = false);
/// \brief Attempt to minimize a deterministic TBA with a SAT solver.
///
/// This calls dtba_sat_synthetize() in a loop, with a decreasing
/// number of states, and returns the last successfully built TBA.
///
/// If no smaller TBA exist, this returns a null pointer.
SPOT_API tgba_digraph_ptr
dtba_sat_minimize(const const_tgba_digraph_ptr& a,
bool state_based = false);
/// \brief Attempt to minimize a deterministic TBA with a SAT solver.
///
/// This calls dtba_sat_synthetize() in a loop, but attempting to
/// find the minimum number of states using a binary search.
//
/// If no smaller TBA exist, this returns a null pointer.
SPOT_API tgba_digraph_ptr
dtba_sat_minimize_dichotomy(const const_tgba_digraph_ptr& a,
bool state_based = false);
}
#endif // SPOT_TGBAALGOS_DTBASAT_HH