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genem: improve the worst case

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* spot/twaalgos/genem.cc, spot/twaalgos/genem.hh: Improve the worst
case by not recurring twice into each disjunct individually.  Keep
the previous two implementation available and add a function
generic_emptiness_check_select_version() so we can benchmark the
difference.
* tests/python/genem.py: Test the three versions.
This commit is contained in:
Alexandre Duret-Lutz 2020-03-06 09:56:16 +01:00
parent 73277bed96
commit 7f0ef7ad59
3 changed files with 100 additions and 28 deletions
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19
tests/python/genem.py
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@ -1,5 +1,5 @@
# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2018-2019 Laboratoire de Recherche et Développement de l'Epita
# Copyright (C) 2018-2020 Laboratoire de Recherche et Développement de l'Epita
# (LRDE).
#
# This file is part of Spot, a model checking library.
@ -283,17 +283,22 @@ def is_scc_empty2(si, scc_num, acc=None):
def run_bench(automata):
for aut in automata:
# Make sure our three implementation behave identically
# Make sure all our implementations behave identically
res5 = is_empty2(aut)
res4 = is_empty1(aut)
res3 = spot.generic_emptiness_check(aut)
spot.generic_emptiness_check_select_version("spot28")
res3a = spot.generic_emptiness_check(aut)
spot.generic_emptiness_check_select_version("atva19")
res3b = spot.generic_emptiness_check(aut)
spot.generic_emptiness_check_select_version("spot29")
res3c = spot.generic_emptiness_check(aut)
res2 = spot.remove_fin(aut).is_empty()
res1 = generic_emptiness2(aut)
res = (str(res1)[0] + str(res2)[0] + str(res3)[0]
+ str(res4)[0] + str(res5)[0])
res = (str(res1)[0] + str(res2)[0] + str(res3a)[0]
+ str(res3b)[0] + str(res3c)[0] + str(res4)[0] + str(res5)[0])
print(res)
assert res in ('TTTTT', 'FFFFF')
if res == 'FFFFF':
assert res in ('TTTTTTT', 'FFFFFFF')
if res == 'FFFFFFF':
run3 = spot.generic_accepting_run(aut)
assert run3.replay(spot.get_cout()) is True