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ltl: rename is_X_free() into is_syntactic_stutter_invariant()

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and adjust it to detect siPSL formulas, as in the paper of Dax et
al. (ATVA'09).  For issue #51.

* src/ltlast/atomic_prop.cc, src/ltlast/binop.cc,
src/ltlast/bunop.cc, src/ltlast/constant.cc, src/ltlast/formula.cc,
src/ltlast/formula.hh, src/ltlast/multop.cc, src/ltlast/unop.cc: Rename
the property, and adjust its computation on siSERE.
* src/ltlvisit/remove_x.cc, src/ltlvisit/simplify.cc,
src/tgbaalgos/stutter.cc: Adjust to new names.
* src/bin/ltlfilt.cc: Add option --syntactic-sutter-invariant.
* src/ltltest/kind.test: Update tests and add some new.
This commit is contained in:
Alexandre Duret-Lutz 2015-01-15 23:09:24 +01:00
parent a79db4eefe
commit 34f1601b9b
13 changed files with 185 additions and 86 deletions
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12
src/ltlast/formula.hh
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@ -1,6 +1,6 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Laboratoire
// de Recherche et Développement de l'Epita (LRDE).
// Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
// Laboratoire de Recherche et Développement de l'Epita (LRDE).
// Copyright (C) 2003, 2004, 2005 Laboratoire d'Informatique de
//
// This file is part of Spot, a model checking library.
@ -153,10 +153,10 @@ namespace spot
return is.in_nenoform;
}
/// Whether the formula avoids the X operator.
bool is_X_free() const
/// Whether the formula is syntactically stutter_invariant
bool is_syntactic_stutter_invariant() const
{
return is.X_free;
return is.syntactic_si;
}
/// Whether the formula avoids the F and G operators.
@ -337,7 +337,7 @@ namespace spot
bool boolean:1; // No temporal operators.
bool sugar_free_boolean:1; // Only AND, OR, and NOT operators.
bool in_nenoform:1; // Negative Normal Form.
bool X_free:1; // No X operators.
bool syntactic_si:1; // LTL-X or siPSL
bool sugar_free_ltl:1; // No F and G operators.
bool ltl_formula:1; // Only LTL operators.
bool eltl_formula:1; // Only ELTL operators.