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zlktree: fix a bug

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Reported by Florian.

* spot/twaalgos/zlktree.cc: Handle the case where the condition does
not cover all colors.
* tests/python/zlktree.py: New file.
* tests/Makefile.am: Add it.
This commit is contained in:
Alexandre Duret-Lutz 2021-09-08 15:15:08 +02:00
parent ceec447617
commit 4ed5160fb8
3 changed files with 32 additions and 2 deletions
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4
spot/twaalgos/zlktree.cc
View file

@ -97,12 +97,12 @@ namespace spot
zielonka_tree::zielonka_tree(const acc_cond& cond) zielonka_tree::zielonka_tree(const acc_cond& cond)
{ {
const acc_cond::acc_code& code = cond.get_acceptance(); const acc_cond::acc_code& code = cond.get_acceptance();
auto used = code.used_sets(); auto all = cond.all_sets();
acc_cond negcond(cond.num_sets(), cond.get_acceptance().complement()); acc_cond negcond(cond.num_sets(), cond.get_acceptance().complement());
nodes_.emplace_back(); nodes_.emplace_back();
nodes_[0].parent = 0; nodes_[0].parent = 0;
nodes_[0].colors = used; nodes_[0].colors = all;
nodes_[0].level = 0; nodes_[0].level = 0;
std::vector<size_model> models; std::vector<size_model> models;

1
tests/Makefile.am
View file

@ -450,6 +450,7 @@ TESTS_python = \
python/twagraph.py \ python/twagraph.py \
python/toweak.py \ python/toweak.py \
python/_word.ipynb \ python/_word.ipynb \
python/zlktree.py \
$(TESTS_ipython) $(TESTS_ipython)
endif endif

29
tests/python/zlktree.py Normal file
View file

@ -0,0 +1,29 @@
# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2021 Laboratoire de Recherche et Développement de l'Epita
# (LRDE).
#
# 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/>.
import spot
a = spot.automaton("""HOA: v1 States: 5 Start: 0 AP: 2 "p0" "p1"
Acceptance: 4 Inf(3) | Fin(3) properties: trans-labels explicit-labels
trans-acc --BODY-- State: 0 [!0&!1] 3 [!0&!1] 4 State: 1 [!0&!1] 4 {3}
[0&!1] 0 {2} [!0&1] 1 {2} State: 2 [!0&1] 0 {0 2} [!0&!1] 1 State: 3
[!0&1] 2 State: 4 [0&!1] 3 --END--""")
b = spot.zielonka_tree_transform(a)
assert spot.are_equivalent(a, b)
assert b.acc().is_buchi()