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Adding tgba-based stutter-invariance checking

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* src/tgbaalgos/closure.cc, src/tgbaalgos/closure.hh:
Add closure function.
* src/tgbaalgos/stutterize.cc, src/tgbaalgos/stutterize.hh:
Add two implementations of "self-loopize" function.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgba/tgbasl.cc, src/tgba/tgbasl.hh: On-the-fly implementation of
self-loopize.
* src/tgba/Makefile.am: Add it.
* src/tgbatest/ltl2tgba.cc, src/tgbatest/stutter_invariant.test: Test
closure and sl.
* src/tgbatest/Makefile.am: Adjust.
* src/bin/ltlfilt.cc: Modify stutter-invariant option to use
automaton-based checking rather than syntactic-based checking.
* src/ltlvisit/remove_x.cc, src/ltlvisit/remove_x.hh:
Remove is_stutter_insensitive function.
* src/tgbaalgos/stutter_invariance.cc,
src/tgbaalgos/stutter_invariance.hh: Check if a formula is
stutter-invariant using closure and sl.
* wrap/python/spot.i: Add closure and sl bindings.
* bench/stutter/stutter_invariance_formulas.cc: Generate benchmarks from
given formulas.
* bench/stutter/stutter_invariance_randomgraph.cc: Generate benchmarks
from random automata.
* bench/stutter/Makefile.am: Add them.
* configure.ac: Add bench/stutter/Makefile.
* bench/Makefile.am: Add stutter subdirectory.
* README: Document bench/stutter directory.
This commit is contained in:
Thibaud Michaud 2014-10-01 12:58:16 +02:00 • committed by Alexandre Duret-Lutz
parent beafcf4e3d
commit 37bcb5d959
23 changed files with 1159 additions and 42 deletions
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15
src/ltlvisit/remove_x.cc
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@ -1,4 +1,4 @@
// Copyright (C) 2013 Laboratoire de Recherche et Developpement de
// Copyright (C) 2013, 2014 Laboratoire de Recherche et Developpement de
// l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
@ -117,18 +117,5 @@ namespace spot
remove_x_visitor v(f);
return v.recurse(f);
}
bool is_stutter_insensitive(const formula* f)
{
assert(f->is_ltl_formula());
if (f->is_X_free())
return true;
const formula* g = remove_x(f);
ltl_simplifier ls;
bool res = ls.are_equivalent(f, g);
g->destroy();
return res;
}
}
}

21
src/ltlvisit/remove_x.hh
View file

@ -48,27 +48,6 @@ namespace spot
\endverbatim */
SPOT_API
const formula* remove_x(const formula* f);
/// \brief Whether an LTL formula \a f is stutter-insensitive.
///
/// This is simply achieved by checking whether the output of
/// <code>remove_x(f)</code> is equivalent to \a f. This only
/// works for LTL formulas, not PSL formulas.
///
/** \verbatim
@Article{ etessami.00.ipl,
author = {Kousha Etessami},
title = {A note on a question of {P}eled and {W}ilke regarding
stutter-invariant {LTL}},
journal = {Information Processing Letters},
volume = {75},
number = {6},
year = {2000},
pages = {261--263}
}
\endverbatim */
SPOT_API
bool is_stutter_insensitive(const formula* f);
}
}