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simplify: GF(f)=GF(dnf(f)) FG(f)=FG(cnf(f))

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These rules come from Delag's paper, and help some cases
in issue #385.

* spot/tl/simplify.cc: Implement the simplification.
* doc/tl/tl.tex, NEWS: Document it.
* tests/core/385.test: New file.
* tests/Makefile.am: Add it.
* tests/core/reduccmp.test: More tests.
* tests/core/ltl2tgba2.test: Adjust one improved case.
* tests/python/automata.ipynb, tests/python/twagraph-internals.ipynb:
Adjust expected output, as the cnf/dnf reorder some subformulas.
This commit is contained in:
Alexandre Duret-Lutz 2019-06-17 00:19:02 +02:00
parent df326e032b
commit da5d23f0a2
9 changed files with 2517 additions and 2291 deletions
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2
tests/core/ltl2tgba2.test
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@ -369,7 +369,7 @@ diff output expected
cat >formulas <<EOF
GF((a & XXa) | (!a & XX!a)), 4,8, 4,8, 6,14, 7,14, 4,8
GF((a & XXXa) | (!a & XXX!a)), 7,14, 8,16, 8,18, 15,30, 8,16
GF(((a & Xb) | XXc) & Xd), 4,64, 4,64, 5,80, 5,80, 4,64
GF(((a & Xb) | XXc) & Xd), 3,58, 4,64, 3,58, 5,80, 4,64
GF((b | Fa) & (b R Xb)), 2,4, 2,4, 3,6, 3,12, 2,4
G(F(a & Xa) & F(a & X!a)), 2,4, 2,4, 4,8, 4,8, 3,6
G(!p0 & F(p1 & XG!p1)), 1,0, 1,0, 1,0, 1,0, 1,0