a2cbe9cab8
* bench/emptchk/ltl-human.sh, bench/emptchk/ltl-random.sh, src/sanity/style.test, src/tgba/bdddict.cc, src/tgba/succiterconcrete.hh, src/tgba/tgbabddcoredata.hh, src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh, src/tgbaalgos/gv04.cc, src/tgbaalgos/gv04.hh, src/tgbaalgos/magic.cc, src/tgbaalgos/magic.hh, src/tgbaalgos/se05.cc, src/tgbaalgos/se05.hh, src/tgbaalgos/tau03.cc, src/tgbaalgos/tau03.hh, src/tgbaalgos/tau03opt.cc, src/tgbaalgos/tau03opt.hh, src/tgbatest/dfs.test: Replace them by "acceptance condition".
106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
// Copyright (C) 2004, 2005 Laboratoire d'Informatique de Paris 6 (LIP6),
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// département Systèmes Répartis Coopératifs (SRC), Université Pierre
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// 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_TAU03OPT_HH
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# define SPOT_TGBAALGOS_TAU03OPT_HH
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#include "misc/optionmap.hh"
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namespace spot
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{
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class tgba;
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class emptiness_check;
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/// \addtogroup emptiness_check_algorithms
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/// @{
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/// \brief Returns an emptiness checker on the spot::tgba automaton \a a.
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///
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/// \pre The automaton \a a must have at least one acceptance condition.
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///
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/// During the visit of \a a, the returned checker stores explicitely all
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/// the traversed states. The implemented algorithm is the following:
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///
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/// \verbatim
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/// procedure check ()
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/// begin
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/// weight = 0; // the null vector
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/// call dfs_blue(s0);
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/// end;
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///
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/// procedure dfs_blue (s)
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/// begin
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/// s.color = cyan;
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/// s.acc = emptyset;
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/// s.weight = weight;
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/// for all t in post(s) do
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/// let (s, l, a, t) be the edge from s to t;
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/// if t.color == white then
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/// for all b in a do
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/// weight[b] = weight[b] + 1;
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/// end for;
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/// call dfs_blue(t);
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/// for all b in a do
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/// weight[b] = weight[b] - 1;
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/// end for;
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/// end if;
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/// Acc = s.acc U a;
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/// if t.color == cyan &&
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/// (Acc U support(weight - t.weight) U t.acc) == all_acc then
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/// report a cycle;
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/// else if Acc not included in t.acc then
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/// t.acc := t.acc U Acc;
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/// call dfs_red(t, Acc);
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/// end if;
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/// end for;
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/// s.color = blue;
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/// end;
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///
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/// procedure dfs_red(s, Acc)
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/// begin
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/// for all t in post(s) do
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/// let (s, l, a, t) be the edge from s to t;
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/// if t.color == cyan &&
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/// (Acc U support(weight - t.weight) U t.acc) == all_acc then
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/// report a cycle;
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/// else if t.color != white and Acc not included in t.acc then
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/// t.acc := t.acc U Acc;
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/// call dfs_red(t, Acc);
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/// end if;
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/// end for;
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/// end;
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/// \endverbatim
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///
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/// This algorithm is a generalisation to TGBA of the one implemented in
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/// spot::explicit_se05_search. It is based on the acceptance set labelling
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/// of states used in spot::explicit_tau03_search. Moreover, it introduce
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/// a slight optimisation based on vectors of integers counting for each
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/// acceptance condition how many time the condition has been visited in
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/// the path stored in the blue stack. Such a vector is associated to each
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/// state of this stack.
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///
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emptiness_check* explicit_tau03_opt_search(const tgba *a,
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option_map o = option_map());
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/// @}
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}
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#endif // SPOT_TGBAALGOS_TAU03OPT_HH
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