31511e042a
Discussed in issue #587. * spot/twaalgos/deadends.cc, spot/twaalgos/deadends.hh: New files. * spot/twaalgos/Makefile.am, python/spot/impl.i: Add them. * tests/core/deadends.test, tests/python/deadends.py: New files. * tests/Makefile.am: Add them. * spot/twa/acc.cc, spot/twa/acc.hh (keep_one_inf_per_branch): New method. * bin/autfilt.cc: Learn option --restrict-dead-end-edges. * NEWS: Mention it.
158 lines
3.3 KiB
Python
158 lines
3.3 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) by the Spot authors, see the AUTHORS file for details.
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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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b = spot.translate('FGb')
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a = spot.translate('GFa & GFc')
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p = spot.product_susp(b, a)
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q = spot.scc_filter(spot.simulation(p), True)
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s = p.to_str()
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spot.restrict_dead_end_edges_here(p)
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s += p.to_str()
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# Applying it twice should not change anything
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spot.restrict_dead_end_edges_here(p)
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s += p.to_str()
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tc.assertEqual(s, """HOA: v1
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States: 2
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Start: 0
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AP: 3 "a" "b" "c"
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acc-name: generalized-Buchi 2
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Acceptance: 2 Inf(0)&Inf(1)
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properties: trans-labels explicit-labels trans-acc stutter-invariant
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--BODY--
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State: 0
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[t] 0
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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State: 1
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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--END--HOA: v1
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States: 2
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Start: 0
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AP: 3 "a" "b" "c"
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acc-name: generalized-Buchi 2
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Acceptance: 2 Inf(0)&Inf(1)
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properties: trans-labels explicit-labels trans-acc stutter-invariant
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--BODY--
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State: 0
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[t] 0
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[0&1&!2] 1 {0}
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[0&1&2] 1 {0 1}
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State: 1
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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--END--HOA: v1
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States: 2
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Start: 0
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AP: 3 "a" "b" "c"
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acc-name: generalized-Buchi 2
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Acceptance: 2 Inf(0)&Inf(1)
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properties: trans-labels explicit-labels trans-acc stutter-invariant
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--BODY--
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State: 0
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[t] 0
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[0&1&!2] 1 {0}
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[0&1&2] 1 {0 1}
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State: 1
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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--END--""")
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spot.restrict_dead_end_edges_here(q)
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s = q.to_str()
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tc.assertEqual(s, """HOA: v1
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States: 2
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Start: 0
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AP: 3 "a" "b" "c"
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acc-name: generalized-Buchi 2
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Acceptance: 2 Inf(0)&Inf(1)
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properties: trans-labels explicit-labels trans-acc stutter-invariant
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--BODY--
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State: 0
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[t] 0
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[0&1] 1
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State: 1
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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--END--""")
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a = spot.translate('GFa & (FGb | FGc) & GFc')
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s = a.to_str()
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spot.restrict_dead_end_edges_here(a)
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s += a.to_str()
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tc.assertEqual(s, """HOA: v1
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States: 3
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Start: 0
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AP: 3 "a" "b" "c"
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acc-name: generalized-Buchi 2
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Acceptance: 2 Inf(0)&Inf(1)
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properties: trans-labels explicit-labels trans-acc stutter-invariant
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--BODY--
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State: 0
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[t] 0
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[0&1 | 1&2] 1
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[2] 2
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State: 1
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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State: 2
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[!0&2] 2 {1}
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[0&2] 2 {0 1}
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--END--HOA: v1
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States: 3
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Start: 0
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AP: 3 "a" "b" "c"
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acc-name: generalized-Buchi 2
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Acceptance: 2 Inf(0)&Inf(1)
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properties: trans-labels explicit-labels trans-acc stutter-invariant
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--BODY--
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State: 0
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[t] 0
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[0&1] 1
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[0&2] 2
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State: 1
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[!0&1&!2] 1
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[0&1&!2] 1 {0}
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[!0&1&2] 1 {1}
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[0&1&2] 1 {0 1}
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State: 2
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[!0&2] 2 {1}
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[0&2] 2 {0 1}
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--END--""")
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