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Implement a favor_even_univ option in the rewriting rules.

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The set of rules enabled by favor_even_univ try to "lift" the
subformulae that are both eventual and universal, so they appear
higher in the AST.  This is contrary to what we used to do (and still
do when the option is unset), were we try to postpone such subformulae
(by moving them down the AST).  It is still a bit experimental.

* src/ltlvisit/simplify.hh: Add option favor_event_univ.
* src/ltlvisit/simplify.cc: Implement new rewriting rules.
* doc/tl/tl.tex: Document them.
* src/tgbatest/ltl2tgba.cc: Add option -ra to enable them.
* src/tgbatest/spotlbtt.test: Test the translation with this option.
* src/ltltest/reduc.cc, src/ltltest/equals.cc: Add option
to enable the new rules.
* src/ltltest/eventuniv.test: New file to test them.
* src/ltltest/Makefile.am: Add it.
This commit is contained in:
Alexandre Duret-Lutz 2012-06-11 19:09:34 +02:00
parent 969d927145
commit 9caa9ad134
9 changed files with 489 additions and 43 deletions
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3
src/ltltest/equals.cc
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@ -104,6 +104,9 @@ main(int argc, char** argv)
#endif
#ifdef REDUC
spot::ltl::ltl_simplifier_options opt(true, true, true, false, false);
# ifdef EVENT_UNIV
opt.favor_event_univ = true;
# endif
spot::ltl::ltl_simplifier simp(opt);
{
const spot::ltl::formula* tmp;