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genem: improve handling of co-Büchi

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* spot/twaalgos/sccinfo.cc, spot/twaalgos/sccinfo.hh: Make sure
scc_and_mark_filter does not install a filter if there is nothing
to filter.
* tests/python/genem.py, spot/twaalgos/genem.cc,
python/spot/impl.i: Adjust.
This commit is contained in:
Alexandre Duret-Lutz 2019-04-12 23:14:29 +02:00
parent afdc7ddaf8
commit 0623965b43
5 changed files with 20 additions and 13 deletions
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5
spot/twaalgos/genem.cc
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@ -108,9 +108,8 @@ namespace spot
}
return true;
}
// FIXME: If there is acc.fin_unit() it, is
// probably a good idea to filter right away.
scc_info si(aut, scc_info_options::STOP_ON_ACC);
scc_info si(scc_and_mark_filter(aut, aut_acc.fin_unit()),
scc_info_options::STOP_ON_ACC);
const int accepting_scc = si.one_accepting_scc();
if (accepting_scc >= 0)