67b5d2aa9a
This massive set of changes was triggered by issue #546. In addition to the better handling of !weak, this also adds some weak properties in a few places. * spot/twaalgos/product.cc (product_aux): Throw some exception if an automaton with t or f acceptance has the !weak property. This is a cheap sanity check to help detect algorithms that incorrectly assumed !weak input would necessarily become !weak output. * spot/twaalgos/hoa.cc (print_hoa): Likewise, also do not assume that terminal implies very-weak. * spot/parseaut/parseaut.yy: Add several diagnostics for similar cases. E.g., a one-state automaton cannot be declared as !very-weak. * tests/core/parseaut.test: Check those new diagnostics. * spot/twa/twa.cc (twa::intersecting_run): Temporary remove the weak property by setting it to maybe, not to false. * spot/twaalgos/minimize.cc, spot/twaalgos/parity.cc, spot/twaalgos/sccfilter.cc, spot/twaalgos/simulation.cc: Account for the fact that these algorithm may in fact improve the weakness. * spot/twaalgos/strength.cc: Only look at colors used by the acceptance condition when deciding weakness. * spot/twaalgos/synthesis.cc: Declare the strategy as weak. * bin/randaut.cc: Add weak to automata with t/f acceptance. * spot/kripke/kripke.hh: Make kripke structures as weak. * tests/core/acc_word.test, tests/core/alternating.test, tests/core/complement.test, tests/core/complete.test, tests/core/ltlsynt.test, tests/core/randomize.test, tests/core/readsave.test, tests/core/remfin.test, tests/core/sccsimpl.test, tests/core/strength.test, tests/core/wdba2.test, tests/ltsmin/kripke.test, tests/python/automata-io.ipynb, tests/python/automata.ipynb, tests/python/dbranch.py, tests/python/highlighting.ipynb, tests/python/kripke.py, tests/python/ltsmin-dve.ipynb, tests/python/mealy.py, tests/python/simstate.py: Adjust all these test cases. * NEWS: Mention the fixes.
712 lines
12 KiB
Python
712 lines
12 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) 2015, 2017-2018, 2020-2023 Laboratoire de Recherche
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# et Développement 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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from sys import exit
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from unittest import TestCase
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tc = TestCase()
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# CPython use reference counting, so that automata are destructed
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# when we expect them to be. However other implementations like
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# PyPy may call destructors latter, causing different output.
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from platform import python_implementation
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if python_implementation() == 'CPython':
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def gcollect():
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pass
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else:
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import gc
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def gcollect():
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gc.collect()
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aut = spot.automaton("""
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HOA: v1
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States: 2
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Start: 0
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AP: 2 "a" "b"
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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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[t] 1 {0}
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State: 1
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[t] 1 {0}
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--END--
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""")
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aut2 = spot.simulation(aut)
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tc.assertEqual(aut2.to_str(), """HOA: v1
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States: 1
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Start: 0
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AP: 2 "a" "b"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: trans-labels explicit-labels state-acc colored complete
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properties: deterministic
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--BODY--
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State: 0 {0}
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[t] 0
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--END--""")
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aut2.copy_state_names_from(aut)
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tc.assertEqual(aut2.to_str(), """HOA: v1
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States: 1
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Start: 0
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AP: 2 "a" "b"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: trans-labels explicit-labels state-acc colored complete
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properties: deterministic
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--BODY--
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State: 0 "[0,1]" {0}
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[t] 0
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--END--""")
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del aut
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del aut2
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gcollect()
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aut = spot.translate('GF((p0 -> Gp0) R p1)')
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daut = spot.tgba_determinize(aut, True)
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tc.assertEqual(daut.to_str(), """HOA: v1
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States: 3
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Start: 0
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AP: 2 "p1" "p0"
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acc-name: parity min even 3
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Acceptance: 3 Inf(0) | (Fin(1) & Inf(2))
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properties: trans-labels explicit-labels trans-acc complete
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properties: deterministic stutter-invariant
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--BODY--
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State: 0 "{₀[0]₀}"
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[!0&!1] 0
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[!0&1] 0
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[0&!1] 0 {0}
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[0&1] 1 {2}
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State: 1 "{₀[0]{₂[2]₂}₀}{₁[1]₁}"
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[!0&!1] 0 {1}
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[!0&1] 2
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[0&!1] 0 {0}
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[0&1] 1 {2}
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State: 2 "{₀[0]₀}{₁[1]₁}"
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[!0&!1] 0 {1}
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[!0&1] 2
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[0&!1] 0 {0}
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[0&1] 1 {2}
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--END--""")
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del aut
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del daut
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gcollect()
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aut = spot.automaton("""
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HOA: v1
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States: 2
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Start: 0
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AP: 2 "a" "b"
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Acceptance: 2 Inf(0)&Inf(1)
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--BODY--
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State: 0
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[0] 0
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[1] 1 {1}
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State: 1
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[0] 1 {0}
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[1] 0
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--END--
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""")
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daut = spot.tgba_determinize(aut, True)
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tc.assertEqual(daut.to_str(), """HOA: v1
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States: 12
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Start: 0
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AP: 2 "a" "b"
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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 "{₀[0#0,0#1]₀}"
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[!0&1] 1
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[0&!1] 0
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[0&1] 2
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State: 1 "{₀[1#1]₀}"
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[!0&1] 0
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[0&!1] 3 {0}
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[0&1] 4
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State: 2 "{₀[0#0,0#1] [1#1]₀}"
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[!0&1] 2
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[0&!1] 4
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[0&1] 5
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State: 3 "{₀[1#0]₀}"
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[!0&1] 0
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[0&!1] 3
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[0&1] 6
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State: 4 "{₀[0#0,0#1]{₁[1#0]₁}₀}"
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[!0&1] 7
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[0&!1] 4
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[0&1] 8
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State: 5 "{₀[0#0,0#1] [1#1]{₁[1#0]₁}₀}"
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[!0&1] 7
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[0&!1] 4
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[0&1] 8
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State: 6 "{₀[0#0,0#1] [1#0]₀}"
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[!0&1] 2
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[0&!1] 6
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[0&1] 9
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State: 7 "{₀[1#1]{₁[0#0,0#1]₁}₀}"
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[!0&1] 10
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[0&!1] 6 {0}
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[0&1] 9 {0}
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State: 8 "{₀[1#1]{₁[0#0,0#1] [1#0]₁}₀}"
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[!0&1] 2 {0}
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[0&!1] 6 {0}
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[0&1] 9 {0}
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State: 9 "{₀[0#0,0#1] [1#1] [1#0]₀}"
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[!0&1] 2
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[0&!1] 4
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[0&1] 5
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State: 10 "{₀[0#0,0#1]{₁[1#1]₁}₀}"
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[!0&1] 7
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[0&!1] 4 {0}
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[0&1] 11
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State: 11 "{₀[1#1]{₁[0#0,0#1]{₂[1#0]₂}₁}₀}"
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[!0&1] 2 {0}
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[0&!1] 6 {0}
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[0&1] 9 {0}
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--END--""")
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a = spot.translate('!Gp0 xor FG((p0 W Gp1) M p1)')
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a = spot.degeneralize_tba(a)
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tc.assertEqual(a.num_states(), 8)
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b = spot.simulation(a)
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tc.assertEqual(b.num_states(), 3)
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b.set_init_state(1)
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b.purge_unreachable_states()
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b.copy_state_names_from(a)
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tc.assertEqual(b.to_str(), """HOA: v1
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States: 1
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Start: 0
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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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properties: trans-labels explicit-labels trans-acc complete
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properties: deterministic stutter-invariant
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--BODY--
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State: 0 "[1,7]"
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[1] 0
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[!1] 0 {0}
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--END--""")
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aut = spot.automaton('''HOA: v1
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States: 12
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Start: 0
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AP: 2 "a" "b"
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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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[!0&1] 1
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[0&!1] 0
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[0&1] 2
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State: 1
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[!0&1] 0
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[0&!1] 3 {0}
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[0&1] 4
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State: 2
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[!0&1] 2
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[0&!1] 4
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[0&1] 5
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State: 3
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[!0&1] 0
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[0&!1] 3
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[0&1] 6
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State: 4
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[!0&1] 7
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[0&!1] 4
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[0&1] 8
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State: 5
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[!0&1] 7
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[0&!1] 4
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[0&1] 8
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State: 6
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[!0&1] 2
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[0&!1] 6
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[0&1] 9
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State: 7
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[!0&1] 10
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[0&!1] 6 {0}
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[0&1] 9 {0}
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State: 8
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[!0&1] 2 {0}
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[0&!1] 6 {0}
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[0&1] 9 {0}
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State: 9
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[!0&1] 2
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[0&!1] 4
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[0&1] 5
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State: 10
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[!0&1] 7
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[0&!1] 4 {0}
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[0&1] 11
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State: 11
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[!0&1] 2 {0}
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[0&!1] 6 {0}
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[0&1] 9 {0}
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--END--''')
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tc.assertEqual(spot.reduce_iterated(aut).to_str(), '''HOA: v1
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States: 9
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Start: 0
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AP: 2 "a" "b"
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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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[0&!1] 0
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[!0&1] 1
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[0&1] 2
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State: 1
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[!0&1] 0
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[0&!1] 3 {0}
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[0&1] 4
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State: 2
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[!0&1] 2
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[0] 4
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State: 3
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[!0&1] 0
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[0&!1] 3
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[0&1] 5
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State: 4
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[0&!1] 4
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[!0&1] 6
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[0&1] 7
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State: 5
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[1] 2
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[0&!1] 5
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State: 6
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[0&1] 2 {0}
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[0&!1] 5 {0}
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[!0&1] 8
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State: 7
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[1] 2 {0}
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[0&!1] 5 {0}
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State: 8
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[0&!1] 4 {0}
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[!0&1] 6
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[0&1] 7
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--END--''')
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aut = spot.automaton('''HOA: v1
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States: 6
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Start: 0
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AP: 2 "a" "b"
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acc-name: co-Buchi
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Acceptance: 1 Fin(0)
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properties: trans-labels explicit-labels state-acc very-weak
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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 {0}
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[0] 1
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State: 2
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[0] 3
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State: 3
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[1] 3
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State: 4
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[1] 5
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State: 5
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[0] 5
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--END--''')
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tc.assertEqual(spot.reduce_iterated(aut).to_str(), '''HOA: v1
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States: 3
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Start: 0
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AP: 2 "a" "b"
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acc-name: co-Buchi
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Acceptance: 1 Fin(0)
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properties: trans-labels explicit-labels state-acc deterministic
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properties: very-weak
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--BODY--
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State: 0 {0}
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[1] 1
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State: 1
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[0] 2
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State: 2
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[1] 2
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--END--''')
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aut = spot.automaton('''HOA: v1
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States: 5
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Start: 0
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AP: 4 "p0" "p1" "p2" "p3"
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Acceptance: 2 Fin(0) & Fin(1)
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properties: trans-labels explicit-labels trans-acc
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--BODY--
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State: 0
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[0&!1&!2&3] 1
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State: 1
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[0&1&!2&3] 2 {0 1}
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[0&1&!2&3] 3 {0 1}
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[0&1&2&!3] 0
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[0&1&!2&3] 4 {0 1}
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[0&1&!2&3] 1 {0 1}
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State: 2
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[0&1&!2&3] 2
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State: 3
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[0&1&!2&3] 2 {1}
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[0&1&!2&3] 3 {1}
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State: 4
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[0&1&!2&3] 2 {0}
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[0&1&!2&3] 4 {0}
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--END--''')
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tc.assertEqual(spot.reduce_direct_cosim(aut).to_str(), '''HOA: v1
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States: 5
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Start: 0
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AP: 4 "p0" "p2" "p3" "p1"
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Acceptance: 2 Fin(0) & Fin(1)
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properties: trans-labels explicit-labels trans-acc
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--BODY--
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State: 0
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[0&!1&2&!3] 1
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State: 1
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[0&1&!2&3] 0
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[0&!1&2&3] 1 {0 1}
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[0&!1&2&3] 2 {0 1}
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[0&!1&2&3] 3 {0 1}
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[0&!1&2&3] 4 {0 1}
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State: 2
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[0&!1&2&3] 2
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State: 3
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[0&!1&2&3] 3 {1}
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State: 4
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[0&!1&2&3] 4 {0}
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--END--''')
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aut = spot.automaton('''HOA: v1
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States: 2
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Start: 0
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AP: 2 "a" "b"
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Acceptance: 2 Fin(0) & Fin(1)
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properties: trans-labels explicit-labels trans-acc
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--BODY--
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State: 0
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[0] 1 {0}
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[0] 1 {1}
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State: 1
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[0] 0
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--END--''')
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tc.assertEqual(spot.reduce_direct_sim(aut).to_str(), '''HOA: v1
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States: 1
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Start: 0
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AP: 2 "a" "b"
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Acceptance: 2 Fin(0) & Fin(1)
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properties: trans-labels explicit-labels state-acc deterministic
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--BODY--
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State: 0
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--END--''')
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aut = spot.automaton('''HOA: v1
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name: "(p1 U p2) U p3"
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States: 4
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Start: 0
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AP: 3 "p1" "p2" "p3"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: trans-labels explicit-labels state-acc stutter-invariant
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properties: terminal
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--BODY--
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State: 0
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[1&!2] 0
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[2] 1
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[0&!2] 2
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State: 1 {0}
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[t] 1
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State: 2
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[1&!2] 0
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[1&2] 1
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[0&!1 | 0&!2] 2
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[0&!1&2] 3
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State: 3
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[1] 1
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[0&!1] 3
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--END--''')
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tc.assertEqual(spot.reduce_direct_cosim_sba(aut).to_str(), '''HOA: v1
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States: 4
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Start: 0
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AP: 3 "p2" "p3" "p1"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: trans-labels explicit-labels state-acc stutter-invariant
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properties: terminal
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--BODY--
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State: 0
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[0&!1] 0
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[1] 1
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[!1&2] 2
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State: 1 {0}
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[t] 1
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State: 2
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[0&!1] 0
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[0&1] 1
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[!0&2 | !1&2] 2
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[!0&1&2] 3
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State: 3
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[0] 1
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[!0&2] 3
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--END--''')
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aut = spot.automaton('''HOA: v1
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States: 4
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Start: 0
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AP: 2 "a" "b"
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acc-name: Buchi
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Acceptance: 1 Inf(0)
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properties: trans-labels explicit-labels state-acc
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--BODY--
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State: 0
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[0] 1
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State: 1
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[1] 2
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[1] 3
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State: 2
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[1] 2
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State: 3 {0}
|
|
[1] 3
|
|
--END--''')
|
|
tc.assertEqual(spot.reduce_direct_cosim(aut).to_str(), '''HOA: v1
|
|
States: 3
|
|
Start: 0
|
|
AP: 2 "a" "b"
|
|
acc-name: Buchi
|
|
Acceptance: 1 Inf(0)
|
|
properties: trans-labels explicit-labels state-acc deterministic
|
|
--BODY--
|
|
State: 0
|
|
[0] 1
|
|
State: 1
|
|
[1] 2
|
|
State: 2 {0}
|
|
[1] 2
|
|
--END--''')
|
|
|
|
tc.assertEqual(spot.reduce_direct_sim_sba(aut).to_str(), '''HOA: v1
|
|
States: 2
|
|
Start: 0
|
|
AP: 2 "a" "b"
|
|
acc-name: Buchi
|
|
Acceptance: 1 Inf(0)
|
|
properties: trans-labels explicit-labels state-acc deterministic
|
|
--BODY--
|
|
State: 0
|
|
[0] 1
|
|
State: 1 {0}
|
|
[1] 1
|
|
--END--''')
|
|
|
|
aut = spot.automaton('''HOA: v1
|
|
States: 3
|
|
Start: 0
|
|
AP: 1 "a"
|
|
Acceptance: 1 t
|
|
properties: trans-labels explicit-labels state-acc deterministic
|
|
--BODY--
|
|
State: 0
|
|
[0] 1
|
|
State: 1
|
|
[0] 2
|
|
State: 2 {0}
|
|
[0] 2
|
|
--END--''')
|
|
tc.assertEqual(spot.reduce_iterated_sba(aut).to_str(), '''HOA: v1
|
|
States: 1
|
|
Start: 0
|
|
AP: 1 "a"
|
|
Acceptance: 1 t
|
|
properties: trans-labels explicit-labels state-acc deterministic
|
|
properties: very-weak
|
|
--BODY--
|
|
State: 0
|
|
[0] 0
|
|
--END--''')
|
|
|
|
aut = spot.automaton('''HOA: v1
|
|
States: 30
|
|
Start: 0
|
|
AP: 4 "c" "d" "a1" "b1"
|
|
acc-name: Buchi
|
|
Acceptance: 1 Inf(0)
|
|
properties: trans-labels explicit-labels trans-acc weak
|
|
--BODY--
|
|
State: 0
|
|
[0&!1&!2&!3] 1
|
|
[0&!1&!2&!3] 2
|
|
State: 1
|
|
[!0&!1&!2&3] 3
|
|
[!0&!1&2&!3] 4
|
|
State: 2
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 5
|
|
[!0&1&!2&!3] 6
|
|
State: 3
|
|
[0&!1&!2&!3] 7
|
|
State: 4
|
|
[0&!1&!2&!3] 8
|
|
State: 5
|
|
[0&!1&!2&!3] 1
|
|
[0&!1&!2&!3] 9
|
|
State: 6
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 10
|
|
State: 7
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 3
|
|
[!0&1&!2&!3] 11
|
|
[!0&1&!2&!3] 12
|
|
[0&!1&!2&!3] 13
|
|
State: 8
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 4
|
|
[!0&1&!2&!3] 14
|
|
[!0&1&!2&!3] 15
|
|
[0&!1&!2&!3] 16
|
|
State: 9
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 5
|
|
[!0&1&!2&!3] 6
|
|
[0&!1&!2&!3] 17
|
|
[0&!1&!2&!3] 18
|
|
State: 10
|
|
[0&!1&!2&!3] 17 {0}
|
|
[0&!1&!2&!3] 19
|
|
State: 11
|
|
[!0&!1&2&!3] 20
|
|
[!0&!1&!2&3] 21 {0}
|
|
State: 12
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 22
|
|
State: 13
|
|
[0&!1&!2&!3] 13
|
|
State: 14
|
|
[!0&!1&2&!3] 21 {0}
|
|
[!0&!1&!2&3] 23
|
|
State: 15
|
|
[!0&!1&!2&3 | !0&!1&2&!3] 24
|
|
State: 16
|
|
[0&!1&!2&!3] 16
|
|
State: 17
|
|
State: 18
|
|
[0&!1&!2&!3] 17
|
|
[0&!1&!2&!3] 18
|
|
State: 19
|
|
[0&!1&!2&!3] 17 {0}
|
|
[0&!1&!2&!3] 19
|
|
State: 20
|
|
[0&!1&!2&!3] 25
|
|
State: 21
|
|
[0&!1&!2&!3] 26 {0}
|
|
State: 22
|
|
[0&!1&!2&!3] 27
|
|
State: 23
|
|
[0&!1&!2&!3] 28
|
|
State: 24
|
|
[0&!1&!2&!3] 29
|
|
State: 25
|
|
[0&!1&!2&!3] 25
|
|
State: 26
|
|
[0&!1&!2&!3] 26 {0}
|
|
State: 27
|
|
[0&!1&!2&!3] 27
|
|
State: 28
|
|
[0&!1&!2&!3] 28
|
|
State: 29
|
|
[0&!1&!2&!3] 29
|
|
--END--''')
|
|
tc.assertEqual(spot.reduce_iterated(a).to_str(), '''HOA: v1
|
|
States: 8
|
|
Start: 0
|
|
AP: 2 "p0" "p1"
|
|
acc-name: Buchi
|
|
Acceptance: 1 Inf(0)
|
|
properties: trans-labels explicit-labels trans-acc stutter-invariant
|
|
--BODY--
|
|
State: 0
|
|
[0] 0
|
|
[!0] 1 {0}
|
|
[!0&1] 2
|
|
[0&1] 3 {0}
|
|
State: 1
|
|
[1] 1
|
|
[!1] 1 {0}
|
|
[!0&1] 2
|
|
[0&1] 4
|
|
State: 2
|
|
[!1] 1 {0}
|
|
[!0&1] 2
|
|
[0&1] 5
|
|
State: 3
|
|
[0&1] 3 {0}
|
|
State: 4
|
|
[0&!1] 6
|
|
State: 5
|
|
[!0&!1] 1 {0}
|
|
[!0&1] 2
|
|
[0&1] 5
|
|
[0&!1] 6 {0}
|
|
State: 6
|
|
[!0&!1] 1 {0}
|
|
[0] 6
|
|
[!0&1] 7
|
|
State: 7
|
|
[!1] 1 {0}
|
|
[0&1] 5
|
|
[1] 7
|
|
--END--''')
|
|
|
|
|
|
# issue #452
|
|
aut = spot.automaton("""HOA: v1
|
|
States: 9
|
|
Start: 0
|
|
AP: 4 "p0" "p1" "p2" "p3"
|
|
Acceptance: 2 Fin(0)&Fin(1)
|
|
Alias: @p 0&1&!2&3
|
|
--BODY--
|
|
State: 0
|
|
[@p] 1 {0 1}
|
|
State: 1
|
|
[@p] 2 {0 1}
|
|
State: 2
|
|
[@p] 0 {0 1}
|
|
[@p] 2
|
|
[@p] 3 {0}
|
|
[@p] 4 {1}
|
|
State: 3
|
|
[@p] 5 {0 1}
|
|
[@p] 6 {0}
|
|
State: 4
|
|
[@p] 7 {0 1}
|
|
[@p] 8 {1}
|
|
State: 5
|
|
[@p] 8 {0 1}
|
|
State: 6
|
|
[@p] 2 {0}
|
|
[@p] 4 {0 1}
|
|
State: 7
|
|
[@p] 6 {0 1}
|
|
State: 8
|
|
[@p] 2 {1}
|
|
[@p] 3 {0 1}
|
|
--END--""")
|
|
aut = spot.simulation(aut)
|
|
tc.assertEqual(aut.num_states(), 1)
|