0b25820211
Based on reports by Florian Renkin and Jens Kreber. * spot/twaalgos/bfssteps.cc, spot/twaalgos/couvreurnew.cc, spot/twaalgos/gtec/gtec.cc, spot/twaalgos/gv04.cc, spot/twaalgos/magic.cc, spot/twaalgos/sccinfo.cc spot/twaalgos/se05.cc, spot/twaalgos/tau03.cc: Ignore bddfalse edges. * spot/twaalgos/gtec/gtec.hh: Remove debugging function. * tests/core/neverclaimread.test: Adjust. * tests/python/ecfalse.py: New test file. * tests/Makefile.am: Add it. * NEWS: Mention the bug.
86 lines
2.6 KiB
Python
86 lines
2.6 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) 2020 Laboratoire de Recherche et Développement de l'Epita
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# (LRDE).
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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 3 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 this program. If not, see <http://www.gnu.org/licenses/>.
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import spot
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from buddy import bddfalse, bddtrue
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a = spot.automaton("""
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HOA: v1
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States: 2
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Start: 1
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AP: 2 "p0" "p1"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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--BODY--
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State: 0
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[!0 | 1] 0 {0}
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[0&!1] 1
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State: 1
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/* we want this edge to be false, but the parser
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would ignore it if we wrote it here */
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[0] 0 {0}
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[!1] 1
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--END--
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""")
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# Make the false edge.
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for e in a.out(1):
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if e.dst == 0:
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e.cond = bddfalse
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assert a.accepting_run() is None
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assert a.is_empty()
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for name in ['SE05', 'CVWY90', 'GV04', 'Cou99(shy)', 'Cou99', 'Tau03']:
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print(name)
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ec = spot.make_emptiness_check_instantiator(name)[0].instantiate(a)
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res = ec.check()
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if res is not None:
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print(res.accepting_run())
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assert res is None
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si = spot.scc_info(a)
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assert si.scc_count() == 1 # only one accessible SCC
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a.set_init_state(0)
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si = spot.scc_info(a)
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assert si.scc_count() == 2
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a = spot.automaton("""HOA: v1 States: 11 Start: 0 AP: 2 "a" "b" Acceptance: 8
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(Fin(0) | Inf(1)) & (Fin(2) | Inf(3)) & ((Fin(4) & Inf(5)) | (Fin(6) & Inf(7)))
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properties: trans-labels explicit-labels trans-acc --BODY-- State: 0 [!0&!1] 1
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{0 4 6 7} [!0&!1] 2 {0 5 6} [!0&!1] 3 {3 4 6 7} [!0&!1] 4 {3 5 6} State: 1
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[0&1] 5 {2 5 7} [0&1] 6 {2 7} [0&1] 7 {2 3 5 7} [0&1] 8 {2 3 7} [0&1] 0 {2 5 7}
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[0&1] 9 {2 7} State: 2 [0&1] 1 {2} [0&1] 3 {2 3} [0&1] 10 {2} State: 3 [0&1] 0
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{3 5 7} [0&1] 9 {3 7} State: 4 [!0&!1] 5 {4 6} [!0&!1] 6 {7} [0&1] 10 {3}
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State: 5 State: 6 State: 7 [!0&!1] 1 {4 6 7} [!0&!1] 2 {5 6} State: 8 [!0&!1] 2
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{4} State: 9 [!0&!1] 2 {0 4} [!0&!1] 4 {3 4} State: 10 --END-- """)
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r = a.accepting_run()
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assert r is not None
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assert r.replay(spot.get_cout())
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for e in a.out(7):
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if e.dst == 2:
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e.cond = bddfalse
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s = a.accepting_run()
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assert s is not None
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assert s.replay(spot.get_cout())
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for e in a.out(2):
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if e.dst == 1:
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e.cond = bddfalse
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s = a.accepting_run()
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assert s is None
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