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translate: improve handling of Xor and Equiv at top-level for -G -D

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* spot/tl/formula.hh: Add variant of formula::is that support 4
arguments.
* spot/tl/simplify.hh, spot/tl/simplify.cc: Add option keep_top_xor
to preserve Xor and Equiv at the top-level.
* spot/twaalgos/translate.cc: Adjust ltl-split to deal with Xor and
Equiv for the -D -G case.
* NEWS: Mention that.
* tests/core/ltl2tgba2.test: Add test case.
* tests/python/simstate.py: Adjust expected result.
This commit is contained in:
Alexandre Duret-Lutz 2020-05-16 18:03:38 +02:00
parent 3ab2dd17a7
commit 6bfa9793d6
7 changed files with 127 additions and 42 deletions
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6
tests/python/simstate.py
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@ -178,13 +178,13 @@ b.copy_state_names_from(a)
assert b.to_str() == """HOA: v1
States: 1
Start: 0
AP: 2 "p0" "p1"
AP: 2 "p1" "p0"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic stutter-invariant
--BODY--
State: 0 "[1,7]"
[!1] 0 {0}
[1] 0
[!0] 0 {0}
[0] 0
--END--"""