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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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18
src/ltlast/bunop.cc
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@ -57,14 +57,28 @@ namespace spot
{
case Star:
if (max_ == unbounded)
is.finite = false;
{
is.finite = false;
is.syntactic_si = min_ == 1 && child->is_boolean();
}
else
{
is.syntactic_si = false;
}
if (min_ == 0)
is.accepting_eword = true;
break;
case FStar:
is.accepting_eword = false;
if (max_ == unbounded)
is.finite = false;
{
is.finite = false;
is.syntactic_si &= !child->is_boolean();
}
else
{
is.syntactic_si = false;
}
break;
}
}