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

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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
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10
bin/spot-x.cc
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@ -1,5 +1,5 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2013, 2014, 2015, 2016, 2017 Laboratoire de Recherche et
// Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018 Laboratoire de Recherche et
// Développement de l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
@ -107,6 +107,14 @@ the determinization algorithm.") },
the determinization algorithm.") },
{ DOC("det-stutter", "Set to 0 to disable optimizations based on \
the stutter-invariance in the determinization algorithm.") },
// FIXME: Add bibliographic reference to their paper ASAP.
{ DOC("gf-guarantee", "Set to 0 to disable alternate constructions \
for GF(guarantee)->[D]BA and FG(safety)->DCA. Those constructions \
are based on work by J. Esparza, J. Křentínský, and S. Sickert. \
This is enabled by default for medium and high optimization \
levels. Unless we are building deterministic automata, the \
resulting automata are compared to the automata built using the \
more traditional pipeline, and only kept if they are better.") },
{ DOC("simul", "Set to 0 to disable simulation-based reductions. \
Set to 1 to use only direct simulation. Set to 2 to use only reverse \
simulation. Set to 3 to iterate both direct and reverse simulations. \