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improve fuse_marks_here by detecting more patterns

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This remove some restrictions that prevented fuse_marks_here from
simplifying certain patterns, as noted in the first comment of
issue #405.

* spot/twaalgos/cleanacc.cc (find_interm_rec, find_fusable): Remove
some unnecessary restrictions to singleton marks, and replace the hack
put one non-singleton mark at the beginning of the singleton list by a
sort.
* tests/python/simplacc.py: Add two test cases.
* tests/python/automata.ipynb, tests/core/remfin.test: Improve
expected results.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2020-05-22 16:09:26 +02:00
parent 645935f796
commit 260a141b1c
5 changed files with 87 additions and 70 deletions
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NEWS
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@ -42,6 +42,12 @@ New in spot 2.9.0.dev (not yet released)
bits. This affects the output of "ltlcross --csv" and
"--stats=%t" for many tools.
- simplify_acceptance() missed some patterns it should have been
able to simplify. For instance Fin(0)&(Fin(1)|Fin(2)|Fin(4))
should simplify to Fin(1)|Fin(2)|Fin(4) adter adding {1,2,4} to
every place where 0 occur, and then the acceptance would be
renumbered to Fin(0)|Fin(1)|Fin(2). This is now fixed.
New in spot 2.9 (2020-04-30)
Command-line tools: