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* NEWS: Update the news about minimization.

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Alexandre Duret-Lutz 2010-12-13 19:28:48 +01:00
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ChangeLog
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@ -1,3 +1,7 @@
2010-12-13 Alexandre Duret-Lutz <adl@lrde.epita.fr>
* NEWS: Update the news about minimization.
2010-11-26 Alexandre Duret-Lutz <adl@lrde.epita.fr>
Speed up wdba.test, it was too slow for our buildfarm.

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NEWS
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@ -6,34 +6,41 @@ New in spot 0.6a:
developement version of checkpn using it, and it should be
released shortly after Spot 0.7.
* The function to_spin_string(), used to output an LTL formula using
Spin's syntax, now takes an optional argument to request full
Spin's syntax, now takes an optional argument to request full
parenthesis.
* src/ltltest/genltl is a new tool that generates some interesting
families of LTL formulae, for testing purpose.
* bench/ltlclasses/ uses the above tool to conduct the same benchmark
* bench/ltlclasses/ uses the above tool to conduct the same benchmark
as in the DepCoS'09 paper by Cichón et al. The resulting benchmark
completes in 12min, while it tooks days (or crashed) when the paper
completes in 12min, while it tooks days (or crashed) when the paper
was written (using Spot 0.4).
* Degeneralization has again been improved in two ways:
- It will merge the degeneralized transitions that can be merged.
- It uses a cache to speed up the improvement introduced in 0.6.
* An implementation of Dax et al.'s paper for minimizing obligation
formulae has been integrated. Use ltl2tgba -Rm to enable this
optimization; it will have no effect if the property is not an
obligation.
* New ltl2tgba options:
-XN: read an input automaton as a neverclaim.
-C, -CR: Compute (and display) a counterexample after running the
emptiness check. With -CR, the counterexample will be
replayed on the automaton to ensure it is correct
(previous version would always compute a replay a
replayed on the automaton to ensure it is correct
(previous version would always compute a replay a
counterexample when emptiness-check was enabled)
-ks: traverse the automaton to compute its number of states and
transitions (this is faster than -k whichi will also count
SCCs and paths).
-Rn: Minimize automata for obligation formulae.
-M: Build a deterministic monitor.
-O: Tell whether an automaton is a safety automaton.
* Bug fixes:
- Location of the errors messages in the TGBA parser where inaccurate.
- Various warning fixes for different versions of GCC and Clang.
- The neverclaim output with ltl2tgba -N or -NN used to ignore any
automaton simplification performed after degeneralization.
- The formula simplification based on universality and eventuallity
had a quadratic run-time.
- The formula simplification based on universality and eventuallity
had a quadratic run-time.
New in spot 0.6 (16-04-2010):