c8889e65f0
* NEWS: mention the modification. * python/spot/impl.i: makes to_weak_alternating visible from python * spot/twaalgos/Makefile.am, spot/twaalgos/toweak.cc, spot/twaalgos/toweak.hh: Implements to_weak_alternating. * tests/Makefile.am, tests/python/toweak.py: Test the results of to_weak_alternating.
55 lines
1.6 KiB
Python
55 lines
1.6 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) 2017 Laboratoire de Recherche et Développement
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# de l'Epita
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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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phi1 = """GFb
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X(!b | GF!a)
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!a U X(b | GF!b)
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GFa
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G(a M b)
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(!a | b) & GFb
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(a U Xa) | G(b & Fa)
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GF!b
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(b & GF!b) | (!b & FGb)
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b | (a & XF(b R a)) | (!a & XG(!b U !a))"""
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phi1 = phi1.split('\n')
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bdddict = spot.make_bdd_dict()
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def equivalent(a, phi):
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negphi = spot.formula.Not(phi)
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nega = spot.dualize(a)
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a2 = spot.translate(phi, 'TGBA', 'SBAcc' )
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nega2 = spot.translate(negphi, 'TGBA', 'SBAcc')
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ra = spot.remove_alternation(a)
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ran = spot.remove_alternation(nega)
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return spot.product(spot.remove_alternation(a), nega2).is_empty()\
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and spot.product(spot.remove_alternation(nega), a2).is_empty()
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def test_phi(phi):
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a = spot.translate(phi, 'TGBA', 'SBAcc')
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a0 = spot.dualize(a)
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res = spot.to_weak_alternating(a0)
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assert equivalent(res, spot.formula.Not(spot.formula(phi)))
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for p in phi1:
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test_phi(p)
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