27ab631cdc
This should will come handy to implement the convertion from LTL to alternating automata, and to handle automata with multiple initial states. * spot/twaalgos/alternation.hh, spot/twaalgos/alternation.cc: New files. * spot/twaalgos/Makefile.am: Add them. * python/spot/impl.i: Add bindings. * tests/python/alternating.py: Test states_and.
134 lines
2.7 KiB
Python
Executable file
134 lines
2.7 KiB
Python
Executable file
#!/usr/bin/python3
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# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) 2016 Laboratoire de Recherche et Développement de
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# 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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import buddy
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aut = spot.make_twa_graph(spot._bdd_dict)
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p1 = buddy.bdd_ithvar(aut.register_ap("p1"))
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p2 = buddy.bdd_ithvar(aut.register_ap("p2"))
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m = aut.set_buchi()
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aut.new_states(3)
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aut.set_init_state(0)
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aut.new_univ_edge(0, [1, 2], p1, m)
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aut.new_univ_edge(0, [0, 1], p2)
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aut.new_univ_edge(1, [0, 2, 1], p1 & p2)
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aut.new_edge(2, 2, p1 | p2)
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tr = [(s, [[x for x in aut.univ_dests(i)] for i in aut.out(s)])
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for s in range(3)]
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print(tr)
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assert [(0, [[1, 2], [0, 1]]), (1, [[0, 2, 1]]), (2, [[2]])] == tr
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assert aut.is_alternating()
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received = False
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try:
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for i in aut.out(0):
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for j in aut.out(i.dst):
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pass
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except RuntimeError:
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received = True
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assert received
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h = aut.to_str('hoa')
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print(h)
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assert h == """HOA: v1
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States: 3
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Start: 0
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AP: 2 "p1" "p2"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: univ-branch trans-labels explicit-labels trans-acc
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--BODY--
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State: 0
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[0] 1&2 {0}
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[1] 0&1
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State: 1
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[0&1] 0&2&1
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State: 2
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[0 | 1] 2
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--END--"""
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aut2 = spot.automaton(h)
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h2 = aut2.to_str('hoa')
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print(h2)
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assert h == h2
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aut2.set_univ_init_state([0, 1])
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h3 = aut2.to_str('hoa')
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print(h3)
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assert h3 == """HOA: v1
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States: 3
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Start: 0&1
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AP: 2 "p1" "p2"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: univ-branch trans-labels explicit-labels trans-acc
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--BODY--
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State: 0
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[0] 1&2 {0}
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[1] 0&1
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State: 1
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[0&1] 0&2&1
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State: 2
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[0 | 1] 2
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--END--"""
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st = spot.states_and(aut, [0, 2])
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st2 = spot.states_and(aut, [1, st])
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st3 = spot.states_and(aut, [0, 1, 2])
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assert (st, st2, st3) == (3, 4, 5)
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received = False
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try:
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st4 = spot.states_and(aut, [])
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except RuntimeError:
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received = True
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assert received
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h = aut.to_str('hoa')
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print(h)
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assert h == """HOA: v1
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States: 6
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Start: 0
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AP: 2 "p1" "p2"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: univ-branch trans-labels explicit-labels trans-acc
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--BODY--
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State: 0
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[0] 1&2 {0}
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[1] 0&1
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State: 1
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[0&1] 0&2&1
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State: 2
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[0 | 1] 2
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State: 3
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[0] 1&2
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[1] 0&1&2
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State: 4
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[0&1] 0&1&2
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State: 5
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[0&1] 0&1&2
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--END--"""
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