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ltlsynt: detect APs with constant polarity

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This implements the first point of issue #529.

* spot/tl/apcollect.cc, spot/tl/apcollect.hh (collect_litterals): New
function.
* bin/ltlsynt.cc: Implement the --polarity option, use
collect_litterals() to simplify the specification, finally patch the
game, Mealy, or Aiger output.
* spot/twaalgos/aiger.cc, spot/twaalgos/aiger.hh: Take a
relabeling_map has argument to specify extra APs.
* tests/core/ltlsynt.test, tests/core/ltlsynt2.test: Adjust test
cases.
This commit is contained in:
Alexandre Duret-Lutz 2023-09-19 09:53:22 +02:00
parent abca0f7fd9
commit 202ab92d1d
8 changed files with 378 additions and 76 deletions
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@ -16,6 +16,13 @@ New in spot 2.11.6.dev (not yet released)
will replace boolean subformulas by fresh atomic propositions even
if those subformulas share atomic propositions.
- ltlsynt will no check for output atomic propositions that always
have the same polarity in the specification. When this happens,
these output APs are replaced by true or false before running the
synthesis pipeline, and the resulting game, Mealy machine, or
Aiger circuit is eventually patched to include that constant
output. This can be disabled with --polarity=no.
Library:
- The following new trivial simplifications have been implemented for SEREs: