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specialize scc_filter for inherently_weak automata

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Part of issue #351.

* spot/twaalgos/sccfilter.cc, spot/twaalgos/sccfilter.hh: Specialize
for inherently-weak automata.
* spot/twaalgos/postproc.cc: Simplify.
* tests/core/dca2.test, tests/core/parity2.test,
tests/core/prodor.test, tests/core/randomize.test,
tests/python/automata.ipynb, tests/python/highlighting.ipynb,
tests/python/product.ipynb, tests/python/remfin.py,
tests/python/stutter-inv.ipynb: Adjust.
* NEWS: Mention it.
This commit is contained in:
Alexandre Duret-Lutz 2018-06-11 15:01:49 +02:00
parent 2fad1ff6de
commit 95d732e331
13 changed files with 1245 additions and 2011 deletions
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NEWS
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@ -122,6 +122,12 @@ New in spot 2.5.3.dev (not yet released)
to update an external structure that references states of the twa
that we want to purge.
- spot::scc_filter() now automatically turns automata marked as
inherently-weak into weak automata with state-based acceptance.
The acceptance condition is set to Büchi unless the input had
co-Büchi or t acceptance. spot::scc_filter_states() will pass
inherently-weak automata to spot::scc_filter().
- spot::cleanup_parity() and spot::cleanup_parity_here() are smarter
and now remove from the acceptance condition the parity colors
that are not used in the automaton.