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improve acceptance simplifications using useless colors

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This fixes issue #418.

* spot/twa/acc.cc,
spot/twa/acc.hh (acc_cond::acc_code::useless_colors_patterns): New
method to detect patterns of colors allowing other colors to be added
or removed at will.
* spot/twaalgos/cleanacc.cc (simplify_acceptance_here): Use the above
patterns to remove some useless colors from transitions and hope that
this can help simplify the acceptance condition.
* spot/twaalgos/degen.cc (propagate_marks_vector): Use the pattern to
add more colors.
* tests/core/ltl2tgba2.test: Add the test case from issue #418.
* tests/core/ltl2dstar4.test, tests/core/satmin3.test,
tests/core/sccdot.test, tests/core/sim3.test,
tests/python/automata.ipynb, tests/python/decompose.ipynb,
tests/python/merge.py, tests/python/pdegen.py, tests/python/remfin.py,
tests/python/toparity.py, tests/python/tra2tba.py: Adjust all test
cases.
* NEWS: Mention this new feature.
This commit is contained in:
Alexandre Duret-Lutz 2020-07-28 22:09:33 +02:00
parent c341a3cabf
commit 0c4b701630
17 changed files with 412 additions and 287 deletions
Download patch file Download diff file Expand all files Collapse all files

12
tests/python/tra2tba.py
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@ -578,11 +578,15 @@ properties: trans-labels explicit-labels trans-acc complete
properties: deterministic
--BODY--
State: 0
[!1] 0 {0}
[1] 1
[0&1] 1 {0}
[0&!1] 0 {0}
[!0&1] 1
[!0&!1] 0 {0}
State: 1
[!1] 0 {0}
[1] 1 {0}
[0&1] 1 {0}
[0&!1] 0 {0}
[!0&1] 1 {0}
[!0&!1] 0 {0}
--END--"""
res = spot.remove_fin(aut)