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rabin_to_buchi_if_realizable: new function

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* spot/twaalgos/remfin.cc, spot/twaalgos/remfin.hh: Implement it.
* tests/python/tra2tba.py: Test it.
* NEWS: Mention it.
This commit is contained in:
Alexandre Duret-Lutz 2020-02-05 17:41:52 +01:00
parent bf4a0ccffd
commit febbe5c2e3
4 changed files with 118 additions and 10 deletions
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52
tests/python/tra2tba.py
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@ -1,5 +1,5 @@
# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2016-2018 Laboratoire de Recherche et Développement
# Copyright (C) 2016-2018, 2020 Laboratoire de Recherche et Développement
# de l'Epita
#
# This file is part of Spot, a model checking library.
@ -482,10 +482,31 @@ State: 1
[0] 1 {0}
--END--"""
res = spot.remove_fin(aut)
assert(res.to_str('hoa') == exp)
# Different order for rabin_to_buchi_if_realizable() due to merge_edges() not
# being called. This is on purpose: the edge order should match exactly the
# original automaton.
exp2 = """HOA: v1
States: 2
Start: 0
AP: 2 "p0" "p2"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic
--BODY--
State: 0
[0] 1
[!0] 0 {0}
State: 1
[0] 1 {0}
[!0] 0 {0}
--END--"""
res = spot.rabin_to_buchi_if_realizable(aut)
assert(res.to_str('hoa') == exp2)
# Test 12.
aut = spot.automaton("""
HOA: v1
@ -574,6 +595,32 @@ State: 1
res = spot.remove_fin(aut)
assert(res.to_str('hoa') == exp)
# rabin_to_buchi_if_realizable() does not call merge_edges() on purpose: the
# edge order should match exactly the original automaton.
exp2 = """HOA: v1
States: 2
Start: 0
AP: 2 "p3" "p2"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic
--BODY--
State: 0
[0&1] 1
[0&!1] 0 {0}
[!0&1] 1
[!0&!1] 0 {0}
State: 1
[0&1] 1 {0}
[0&!1] 0 {0}
[!0&1] 1 {0}
[!0&!1] 0 {0}
--END--"""
res = spot.rabin_to_buchi_if_realizable(aut)
assert(res.to_str('hoa') == exp2)
# Test 14.
aut = spot.automaton("""
HOA: v1
@ -608,3 +655,4 @@ State: 1
res = spot.remove_fin(aut)
assert(res.to_str('hoa') == exp)
assert spot.rabin_to_buchi_if_realizable(aut) is None