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twa_graph: swap the two passes of merge_edges()

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This improves the determinism in a few cases.

* spot/twa/twagraph.cc (merge_edges): Encapsulate the two
passes into lambdas so that they are very easy to swap.
* spot/twa/twagraph.hh (merge_edges): Adjust documentation.
* tests/python/mergedge.py: Add test case.
* tests/core/alternating.test, tests/python/alternation.ipynb:
Determinism was improved.
* tests/core/parity2.test, tests/core/readsave.test,
tests/core/sbacc.test, tests/python/_product_susp.ipynb,
tests/python/atva16-fig2a.ipynb, tests/python/decompose.ipynb,
tests/python/highlighting.ipynb, tests/python/satmin.ipynb,
tests/python/simstate.py: Adjust expected order of edges.
* NEWS: Mention the change.
This commit is contained in:
Alexandre Duret-Lutz 2021-01-19 20:58:04 +01:00
parent e8e31c2723
commit 2072151499
15 changed files with 1963 additions and 1896 deletions
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6
tests/python/simstate.py
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@ -1,6 +1,6 @@
# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2015, 2017-2018, 2020 Laboratoire de Recherche et Développement
# de l'Epita
# Copyright (C) 2015, 2017-2018, 2020-2021 Laboratoire de Recherche
# et Développement de l'Epita
#
# This file is part of Spot, a model checking library.
#
@ -185,6 +185,6 @@ properties: trans-labels explicit-labels trans-acc complete
properties: deterministic stutter-invariant
--BODY--
State: 0 "[1,7]"
[!1] 0 {0}
[1] 0
[!1] 0 {0}
--END--"""