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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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2
tests/core/det.test
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@ -41,7 +41,7 @@ cat >formulas <<'EOF'
1,6,GF!a U Xa
1,5,(a | G(a M !b)) W Fc
1,6,Fa W Xb
1,10,X(a R ((!b & F!c) M X!a))
1,9,X(a R ((!b & F!c) M X!a))
1,2,XG!a R Fb
1,4,GFc | (a & Fb)
1,6,X(a R (Fb R F!b))