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ltlcross: fix cross-checks for automata using Fin acceptance

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Fixes #420 reported by Salomon Sickert.

* bin/ltlcross.cc: Call determine_unknown_acceptance().
* spot/twaalgos/sccinfo.cc, spot/twaalgos/sccinfo.hh: Document
that one_accepting_scc()==-1 can mean "don't know", and update
determine_unknown_acceptance() to set one_acc_scc_.
* tests/core/ltlcross3.test: Add test case.
* NEWS: Mention the fixes.
This commit is contained in:
Alexandre Duret-Lutz 2020-07-20 12:10:20 +02:00
parent 4db6a342da
commit 33b28c8151
5 changed files with 31 additions and 3 deletions
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9
NEWS
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@ -45,6 +45,15 @@ New in spot 2.9.1.dev (not yet released)
file. With this refactoring, we can retrieve both a kripke or a
kripkecube from a PINS file.
Bugs fixed:
- ltlcross --csv=... --product=N with N>0 could output spurious
diagnosics claiming that words were rejected when evaluating
the automaton on state-space.
- spot::scc_info::determine_unknown_acceptance() now also update the
result of spot::scc_info::one_accepting_scc().
New in spot 2.9.1 (2020-07-15)
Command-line tools: