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twa_graph: do not order BDDs by IDs in merge_edges()

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Fixes #282.

* spot/misc/bddlt.hh (bdd_less_than_stable): New function.
* spot/twa/twagraph.cc (merge_edges): Use it.
* tests/core/complement.test, tests/core/degenid.test,
tests/core/ltldo.test, tests/core/prodor.test,
tests/core/readsave.test, tests/core/sbacc.test,
tests/python/atva16-fig2a.ipynb, tests/python/automata.ipynb,
tests/python/decompose.ipynb, tests/python/dualize.py,
tests/python/highlighting.ipynb, tests/python/piperead.ipynb,
tests/python/product.ipynb, tests/python/simstate.py,
tests/python/tra2tba.py: Adjust all expected outputs.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2017-09-24 16:06:41 +02:00
parent bd34f3c629
commit cdfe78f178
18 changed files with 788 additions and 725 deletions
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8
NEWS
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@ -2,6 +2,14 @@ New in spot 2.4.0.dev (not yet released)
Nothing yet.
Bugs fixed:
- The twa_graph::mege_edges() function relied on BDD IDs to sort
edges. This in turn caused some algorithm (like the
degeneralization) to produce slighltly different outputs (but
still correct outputs) depending on the BDD operations performed
before.
New in spot 2.4 (2017-09-06)
Build: