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degen: detect superfluous SCCs and remove them

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Suggested by Maximilien Colange.

* spot/twaalgos/degen.cc: If the output has more SCC than the input,
detect useless SCCs and remove them.
* spot/twaalgos/postproc.cc, spot/twaalgos/postproc.hh,
spot/twaalgos/degen.hh: Add support for a degen-remscc option.
* bin/spot-x.cc, NEWS: Document it.
* tests/core/degenscc.test: New file.
* tests/Makefile.am: Add it.
* tests/core/det.test: Lower some expected size (yay!).
This commit is contained in:
Alexandre Duret-Lutz 2017-09-28 21:54:49 +02:00
parent ce5e3b654f
commit 900b344c9a
9 changed files with 147 additions and 22 deletions
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spot/twaalgos/postproc.hh
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@ -207,6 +207,7 @@ namespace spot
int degen_cache_ = 1;
bool degen_lskip_ = true;
bool degen_lowinit_ = false;
bool degen_remscc_ = true;
bool det_scc_ = true;
bool det_simul_ = true;
bool det_stutter_ = true;