43b4d80da1
Fixes issue #525. * spot/twaalgos/dbranch.hh, NEWS: Document. * spot/twaalgos/dbranch.cc: Detect cases where the acceptance should be changed from state-based to transition-based. * tests/python/dbranch.py: Add a test case.
174 lines
4.4 KiB
Python
174 lines
4.4 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) 2022, 2023 Laboratoire de Recherche et
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# Développement de l'Epita (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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# Test that the spot.gen package works, in particular, we want
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# to make sure that the objects created from spot.gen methods
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# are usable with methods from the spot package.
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import spot
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from unittest import TestCase
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tc = TestCase()
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aut5 = spot.automaton("""HOA: v1 States: 28 Start: 0 AP: 4 "alive" "b"
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"a" "c" acc-name: Buchi Acceptance: 1 Inf(0) properties: trans-labels
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explicit-labels state-acc very-weak --BODY-- State: 0 [0] 1 [0] 2 [0]
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3 [0] 4 [0] 5 [0&!1] 6 [0] 7 State: 1 [0] 8 State: 2 [!0] 9 [0] 10
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State: 3 [!0] 9 [0] 11 State: 4 [!0] 9 [0] 12 State: 5 [!0] 9 [0] 13
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State: 6 [!0] 9 [0&!1] 14 State: 7 [!0] 9 [0&!1&!2] 14 State: 8 [0] 15
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State: 9 {0} [!0] 9 State: 10 [!0] 9 [0] 16 State: 11 [!0] 9 [0] 17
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State: 12 [!0] 9 [0] 18 State: 13 [!0] 9 [0&!1&!2] 19 State: 14 [!0] 9
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[0&!1] 19 State: 15 [0] 20 State: 16 [!0] 9 [0] 21 State: 17 [!0] 9
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[0] 22 State: 18 [!0] 9 [0&!1&!2] 23 State: 19 [!0] 9 [0&!1] 23 State:
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20 [0] 24 State: 21 [!0] 9 [0] 25 State: 22 [!0] 9 [0&!1&!2] 26 State:
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23 [!0] 9 [0&!1] 26 State: 24 [0&3] 27 State: 25 [!0] 9 [0&!1&!2] 27
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State: 26 [!0] 9 [0&!1] 27 State: 27 [!0] 9 [0] 27 --END--""")
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copy = spot.make_twa_graph(aut5, spot.twa_prop_set.all())
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tc.assertFalse(spot.is_deterministic(aut5))
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if spot.delay_branching_here(aut5):
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aut5.purge_unreachable_states()
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aut5.merge_edges()
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tc.assertEqual(aut5.num_states(), 13)
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tc.assertEqual(aut5.num_edges(), 29)
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tc.assertTrue(spot.are_equivalent(copy, aut5))
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a = spot.automaton("""HOA: v1 States: 8 Start: 0 AP: 3 "a" "b" "c"
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Acceptance: 0 t --BODY-- State: 0 [0] 1 [0] 2 [0] 3 State: 1 [!1] 4&5
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[1] 5&6 State: 2 [0] 4&6 State: 3 [0] 3&6 State: 4 [!0] 7 State: 5
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[!0] 7 State: 6 [!0] 6 State: 7 [0] 7 --END--""")
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copy = spot.make_twa_graph(a, spot.twa_prop_set.all())
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if spot.delay_branching_here(a):
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a.purge_unreachable_states()
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a.merge_edges()
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tc.assertEqual(a.to_str(), """HOA: v1
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States: 7
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Start: 0
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AP: 3 "b" "a" "c"
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acc-name: all
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Acceptance: 0 t
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properties: trans-labels explicit-labels state-acc univ-branch
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--BODY--
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State: 0
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[1] 1
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[1] 2
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State: 1
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[1] 3&5
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[0] 4&5
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[!0] 3&4
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State: 2
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[1] 2&5
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State: 3
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[!1] 6
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State: 4
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[!1] 6
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State: 5
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[!1] 5
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State: 6
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[1] 6
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--END--""")
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a = spot.automaton("""HOA: v1
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States: 9
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Start: 0 AP: 2 "a" "b"
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spot.state-player: 0 1 1 0 0 0 0 1 1
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Acceptance: 0 t
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--BODY--
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State: 0
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[0] 1
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[0] 2
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[0] 3
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[0] 4
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State: 1
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[1] 5
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State: 2
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[!1] 6
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State: 3
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[1] 7
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State: 4
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[!1] 8
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State: 5
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[t] 5
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State: 6
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[t] 6
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State: 7
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[t] 7
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State: 8
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[t] 8
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--END--""")
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copy = spot.make_twa_graph(a, spot.twa_prop_set.all())
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if spot.delay_branching_here(a):
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a.purge_unreachable_states()
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tc.assertTrue(spot.are_equivalent(a, copy))
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tc.assertEqual(a.to_str(), """HOA: v1
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States: 7
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Start: 0
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AP: 2 "b" "a"
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acc-name: all
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Acceptance: 0 t
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properties: trans-labels explicit-labels state-acc very-weak
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spot-state-player: 0 1 0 0 0 1 1
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--BODY--
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State: 0
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[1] 1
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[1] 2
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State: 1
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[0] 3
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[!0] 4
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State: 2
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[0] 5
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[!0] 6
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State: 3
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[t] 3
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State: 4
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[t] 4
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State: 5
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[t] 5
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State: 6
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[t] 6
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--END--""")
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# Running delay_branching_here on state-based acceptance may require
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# the output to use transition-based acceptance. (Issue #525.)
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a = spot.automaton("""
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HOA: v1 States: 4 Start: 0 AP: 2 "a" "b" Acceptance: 1 Inf(0) --BODY--
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State: 0 [0] 1 [0] 2 State: 1 [1] 3 State: 2 {0} [!1] 3 State: 3 [t] 0
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--END--""")
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copy = spot.make_twa_graph(a, spot.twa_prop_set.all())
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if spot.delay_branching_here(a):
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a.purge_unreachable_states()
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tc.assertTrue(spot.are_equivalent(a, copy))
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tc.assertEqual(a.to_str(), """HOA: v1
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States: 3
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Start: 0
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AP: 2 "b" "a"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: trans-labels explicit-labels trans-acc deterministic
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--BODY--
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State: 0
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[1] 1
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State: 1
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[0] 2
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[!0] 2 {0}
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State: 2
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[t] 0
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--END--""")
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