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dbranch: fix handling of states without successors

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Fixes #524, reported by Rüdiger Ehlers.

* spot/twaalgos/dbranch.cc: When merging an edge going to state
without successors simply delete it.
* bin/spot-x.cc: Typo in documentation.
* tests/core/ltlcross.test: Add a test case.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2023-01-23 11:59:49 +01:00
parent 09bbaa1e41
commit a9c457f93f
4 changed files with 31 additions and 21 deletions
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5
tests/core/ltlcross.test
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@ -1,6 +1,6 @@
#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2012-2014, 2016, 2019 Laboratoire de Recherche et
# Copyright (C) 2012-2014, 2016, 2019, 2023 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
@ -65,3 +65,6 @@ ltlcross -D \
# Spot 2.8. We use ltl2tgba twice so ltlcross build cross-products.
ltlcross --verbose ltl2tgba ltl2tgba \
-f '(G(F((a1)&(X(X(b1))))))&(G(F((a2)&(X(X(b2))))))&(G(F((a3)&(X(X(b3))))))'
# Issue #524.
ltlcross ltl2tgba -f '!(X(v3 | G!v5) | ((Xv5 & !(v5 & !X!v3)) U !v5))'