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to_dca/to_nca: fix handling of co-Büchi input

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* spot/twaalgos/cobuchi.cc (to_dca, to_nca): Do not process
the input if it is already co-Büchi.
* tests/core/dca.test: Test this.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2018-03-28 10:26:10 +02:00
parent fc205c1883
commit 7957a231a1
3 changed files with 36 additions and 2 deletions
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5
NEWS
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@ -27,6 +27,11 @@ New in spot 2.5.2.dev (not yet released)
simplified to {1} or {SERE} depending on whether SERE accepts
the empty word or not.
Bugs fixed:
- "autfilt --cobuchi --small/--det" would turn a transition-based
co-Büchi automaton into a state-based co-Büchi.
New in spot 2.5.2 (2018-03-25)
Bugs fixed: