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zlktree: use a cache in the construction of zielonka_tree

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This largely speeds up the computation for conditions
like "Rabin n" sharing a lot of subtrees.

Also implement options to stop the construction if the shape is wrong.

* spot/twaalgos/zlktree.cc, spot/twaalgos/zlktree.hh: Implement the
cache and the options.
* tests/python/zlktree.ipynb, tests/python/zlktree.py: New tests.
This commit is contained in:
Alexandre Duret-Lutz 2022-05-20 16:51:16 +02:00
parent f784e40548
commit b11208440b
5 changed files with 517 additions and 151 deletions
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5
NEWS
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@ -85,6 +85,11 @@ New in spot 2.10.6.dev (not yet released)
- complement() used to always turn tautological acceptance conditions
into Büchi. It now only does that if the automaton is modified.
- The zielonka_tree construction was optimized using the same
memoization trick that is used in ACD. Additionally it can now be
run with additional option to abort when the tree as an unwanted
shape, or to turn the tree into a DAG.
New in spot 2.10.6 (2022-05-18)
Bugs fixed: