specialized translation for GF(guarantee) and FG(safety)

This is adapted from a proposition in a paper by J. Esparza,
J. Křentínský, and S. Sickert, submitted to LICS'18.  We should add
proper references to the code and documentation once that paper is
accepted.

* spot/twaalgos/gfguarantee.cc, spot/twaalgos/gfguarantee.hh:
New files.
* spot/twaalgos/Makefile.am, python/spot/impl.i: Add them.
* spot/twa/fwd.hh: Add a forward declaration of bdd_dict_ptr.
* spot/twaalgos/postproc.cc, spot/twaalgos/postproc.hh: Make it
possible to call finalize() from the translator subclass.  Constify
all the do_* functions while we are there.
* spot/twaalgos/translate.cc, spot/twaalgos/translate.hh: Add
a "gf-guarantee" option to decide whether to use the new translation.
* bin/spot-x.cc: Document it.
* tests/core/dca2.test, tests/core/genltl.test,
tests/core/ltl2tgba2.test, tests/core/parity2.test,
tests/core/satmin.test, tests/python/automata.ipynb,
tests/python/sbacc.py: Adjust test cases.
* tests/python/except.py: Add a couple more tests.
This commit is contained in:
Alexandre Duret-Lutz 2018-03-28 10:32:38 +02:00
parent 89f7047925
commit 7a65bdf6bc
19 changed files with 3140 additions and 1932 deletions

View file

@ -75,3 +75,15 @@ try:
a = r.reduce()
except RuntimeError as e:
assert "empty cycle" in str(e)
f = spot.formula('GF(a | Gb)')
try:
spot.gf_guarantee_to_ba(f, spot._bdd_dict)
except RuntimeError as e:
assert "guarantee" in str(e)
f = spot.formula('FG(a | Fb)')
try:
spot.fg_safety_to_dca(f, spot._bdd_dict)
except RuntimeError as e:
assert "safety" in str(e)