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postproc: fix issue #402

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* spot/twaalgos/postproc.cc, spot/twaalgos/postproc.hh,
spot/twaalgos/translate.cc: Introduce a gen-reduce-parity option and
use it on sub-automata built by ltl-split.
* bin/spot-x.cc: Document it.
* tests/core/ltl2tgba2.test: Add test case reported by Juraj Major.
This commit is contained in:
Alexandre Duret-Lutz 2020-04-25 19:59:11 +02:00
parent fe340ae8db
commit 6706042019
5 changed files with 52 additions and 18 deletions
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11
bin/spot-x.cc
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@ -1,5 +1,5 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2013-2019 Laboratoire de Recherche et Développement
// Copyright (C) 2013-2020 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
@ -117,6 +117,15 @@ the determinization algorithm.") },
the determinization algorithm.") },
{ DOC("det-stutter", "Set to 0 to disable optimizations based on \
the stutter-invariance in the determinization algorithm.") },
{ DOC("gen-reduce-parity", "When the postprocessor routines are \
configured to output automata with any kind of acceptance condition, \
but they happen to process an automaton with parity acceptance, they \
call a function to minimize the number of colors needed. This option \
controls what happen when this reduction does not reduce the number of \
colors: when set (the default) the output of the reduction is returned, \
this means the colors in the automaton may have changed slightly, and in \
particular, there is no transition with more than one color; when unset, \
the original automaton is returned.") },
{ DOC("gf-guarantee", "Set to 0 to disable alternate constructions \
for GF(guarantee)->[D]BA and FG(safety)->DCA. Those constructions \
are from an LICS'18 paper by J. Esparza, J. Křentínský, and S. Sickert. \