ChangeLog 279 KB
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2009-11-24  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Detect running timers, and stop a timer in ltl2tgba.

	* src/misc/timer.hh (time_info::running): New attribute.
	(time_info::start, time_info::stop): Update and check
	time_info::running.
	* src/misc/timer.cc (timer_map::print): Mark running timers with
	a "+" in the output.
	* src/tgbatest/ltl2tgba.cc (main): Rename the name of the timers
	for SCC and simulation reduction, and actually stop the SCC timer.

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2009-11-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/sccfilter.cc (create_transition): Do not clone
	the same node twice when dealing with loops.

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2009-11-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Use bdd_satprefix() to speedup minato on BDDs that are almost cubes.

	* src/misc/minato.cc (minato_isop::minato_isop): Call bdd_satprefix.
	(minato_isop::next): Avoid useless intermediate variables.
	* src/misc/minato.hh: Typo in comments.

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2009-11-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Specialize scc_filter when handling tgba_explicit_formula automata.

	If the input is a tgba_explicit_formula we can output a
	tgba_explicit_formula too, and we want to do that because it is
	more space efficient.

	* src/tgba/tgbaexplicit.hh (get_label): New method.
	* src/tgbaalgos/sccfilter.cc (create_transition): New function,
	to handle tgba_explicit_formula and tgba_explicit_string output
	differently.
	(filter_iter): Template it on the output tgba type, and adjust
	to call create_transition.
	(scc_filter): Use filter_iter<tgba_explicit_formula> or
	filter_iter<tgba_explicit_string> depending on the input tgba
	type.

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2009-11-20  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Strip useless acceptance conditions in scc_filter().

	A useless acceptance conditions is one that is always implied by
	another.

	* src/misc/bddop.hh, src/misc/bddop.cc
	(compute_neg_acceptance_conditions): New function.
	* src/tgba/tgbaexplicit.hh, src/tgba/tgbaexplicit.cc
	(set_acceptance_conditions): New function.
	* src/tgbaalgos/scc.cc (build_map, build_scc_stats, dump_scc_dot):
	Keep track of useful acceptance conditions.
	(useful_acc_of): New function.
	* src/tgbaalgos/scc.hh (scc_stats, scc_map::scc::useful_scc): New
	attributes.
	* src/tgbaalgos/sccfilter.cc (filter_iter): Adjust to filter
	useless acceptance conditions.
	(scc_filter): Compute useful acceptance conditions and pass them
	to filter_iter.

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2009-11-20  Alexandre Duret-Lutz  <adl@va-et-vient.net>

	* src/tgbaalgos/sccfilter.cc (scc_filter): Merge transitions
	after removing acceptance conditions.

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2009-11-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Remove prune_scc(), prune_acc(), and related fonctions.

	* src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh (prune_scc,
	prune_acc, remove_component, compute_scc, remove_acc,
	is_not_accepting, delete_scc, is_terminal, remove_scc,
	display_scc): Remove anything related to the simplification of
	SCCs.

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2009-11-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Replace prune_scc() by scc_filter().

	prune_scc() leaked memory and failed to remove chains of useless SCCs.

	* src/tgbaalgos/reductgba_sim.cc (reduc_tgba_sim): Call
	scc_filter() instead of prune_scc(), and do it before running
	any simulation-based reduction.
	* src/tgbaalgos/reductgba_sim.hh (reduc_tgba_sim): Return a const
	tgba*.
	* src/tgbatest/ltl2tgba.cc, src/tgbatest/reductgba.cc: Call
	scc_filter() instead of prune_scc().
	* src/tgbatest/scc.test: Add two more tests that failed with
	prune_scc().

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2009-11-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Quick implementation of a "useless SCC" filter using scc_map.

	* src/tgbaalgos/sccfilter.hh, src/tgbaalgos/sccfilter.cc: New
	files.
	* src/tgbaalgos/Makefile.am: Add them.

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2009-11-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix acceptance check in scc_map: trivial SCCs are not accepting.
	Also compute useless SCCs.

	* src/tgbaalgos/scc.cc (scc_map::scc::trivial): New field.
	(scc_stats::useless_scc_map): New field.
	* src/tgbaalgos/scc.cc (scc_map::build_map): Mark SCCs that are
	not trivial.
	(scc_map::accepting): Always return false for trivial SCC.
	(build_scc_stats): Fill in useless_scc_map.

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2009-11-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Make it easy to filter states while iterating over an automaton.

	* src/tgbaalgos/reachiter.hh (tgba_reachable_iterator::want_state):
	New method.
	* src/tgbaalgos/reachiter.cc (tgba_reachable_iterator::want_state):
	Implement it.
	(tgba_reachable_iterator::run): Call want_state before processing
	a state.

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2009-11-17  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/cutscc.cc (cut_scc): Pass `s' by reference instead
	of by pointer.
	* src/tgbaalgos/cutscc.cc, src/tgbaalgos/cutscc.hh: Fix copyright
	header.

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2009-11-13  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Replace the hash key construction of LTL formulae by a simple
	counter updated each time we create a new (unique) formula.

	Doing so saves a lot of memory during the translation of the
	ltlcounter formulae, because the formulae are quite big and
	storing a string representation of each formula on its node was a
	bad idea.  For instance with n=12, the translation now uses 40MB
	where it used 290MB.  (Note: in both cases, 20MB is being used by
	the BDD cache.)

	* src/ltlast/formula.hh (hash_key_): Rename as ...
	(count_): ... this.
	(hash): Adjust.
	(max_count): New static variable to count the number of
	formulae created.
	(formula): Update max_count and set count_.
	(dump): Make it a virtual pure method.
	(set_key_): Remove.
	(formula_ptr_less_than): Speed up and return false when
	the two formula pointer are equal.
	* src/ltlast/formula.cc (set_key_, dump): Remove.
	* src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
	src/ltlast/automatop.cc, src/ltlast/automatop.hh,
	src/ltlast/binop.cc, src/ltlast/binop.hh, src/ltlast/constant.cc,
	src/ltlast/constant.hh, src/ltlast/multop.cc,
	src/ltlast/multop.hh, src/ltlast/unop.cc, src/ltlast/unop.hh:
	Empty the constructor (do not precompute the dump_ anymore),
	and add a dump() implementation.

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2009-11-12  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Use -l wherever we where expecting ltl2tgba to default to LaCIM.

	* bench/ltl2tgba/algorithms: Use -l for all LaCIM invocations.
	* src/tgbatest/dupexp.test, src/tgbatest/emptchk.test,
	src/tgbatest/spotlbtt.test: Likewise.

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2009-11-12  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Cleanup the help of ltl2tgba.

	* src/tgbatest/ltl2tgba.cc (syntax): Reorganize the help text, so
	that we can find options without resorting to grep...  Also
	cleanup the program name if it is a libtool wrapper.

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2009-11-12  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltl2tgba.cc (-l): New option to select the lacim
	translation.  It still is the default translation.
	(opt_fm, opt_taa): Replace these two variables by ...
	(translation): ... this enum.  And use a switch to call the
	correct translation.

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2009-11-11  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Remove python bindings for ltl::clone and ltl::destroy.

	* wrap/python/spot.i: Do not include clone.hh and destroy.hh.

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2009-11-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Typo from a previous patch.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Fix a typo
	introduced three patches ago in the handling of unobserved events.

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2009-11-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Do not comment states in the never claim by default.  It takes too
	much time when the formula is large, and it is useless when the
	purpose is model-checking with Spin.

	* src/tgbaalgos/neverclaim.hh (never_claim_reachable): Add the
	comments option.
	* src/tgbaalgos/neverclaim.cc (never_claim_bfs,
	never_claim_reachable): Honor the comment option.
	* src/tgba/tests/ltl2tgba.cc (-N): Do not comment states.
	(-NN) New option to output a commented never claim.

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2009-11-10  Damien Lefortier <dam@lrde.epita.fr>

	* src/tgba/taa.cc, src/tgba/taa.hh: Fix it.
	* src/tgbaalgos/ltl2taa.cc: Do NOT use the same bdd_dict for both
	the translation and the language containment checker.
	* src/tgbatest/spotlbtt.test: Update TAA related tests.

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2009-11-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Use tgba_explicit_formula instead of tgba_explicit_string in FM.

	This gives a nice speedup (>1.4) in the ltlcounter benchmark,
	because we no longer have to generate a copy the string
	representations of the LTL formulae.

	* src/tgbaalgos/ltl2tgba_fm.cc: Adjust.  Also get rid of the
	formulae_seen map, since we can now ask the tgba_explicit_formula
	if it knows the state.

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2009-11-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Ease debugging of LTL formulae leaks.

	* src/tgbatest/ltl2tgba.cc: Dump all LTLinstances with their
	reference count.

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2009-11-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Introduce tgba_explicit_labelled<label> so that we can build
	tgba_explicit instances labelled by other objects than strings.

	* src/tgba/tgbaexplicit.cc, src/tgba/tgbaexplicit.hh:
	Split tgba_explicit in two levels: tgba_explicit with unlabelled
	states, and tgba_explicit_labelled templated by the type of
	the label.  Define tgba_explicit_string (with the interface
	of the former tgba_explicit class) and tgba_explicit_formula
	for future use in ltl2tgba.cc.
	* src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh,
	src/tgbaalgos/cutscc.cc, src/tgbaalgos/dupexp.cc,
	src/tgbaalgos/emptiness.cc, src/tgbaalgos/ltl2tgba_fm.cc,
	src/tgbaalgos/powerset.cc, src/tgbaalgos/randomgraph.cc,
	src/tgbaparse/public.hh, src/tgbaparse/tgbaparse.yy,
	src/tgbatest/explicit.cc, src/tgbatest/ltl2tgba.cc: Adjust to
	use tgba_explicit_string when appropriate.

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2009-11-09  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Do not use the Boost macro from the Autoconf macro archive.

	* m4/boost.m4: Rewrite like I already did in Vaucanson.

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2009-11-09  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltlcounter.test (run): Do not run with n=12, as
	the test case might become too slow for the autobuilder.

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2009-11-06  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Add a benchmark using Kristin Y. Rozier's LTLcounter scripts.

	* bench/ltlcounter/README, bench/ltlcounter/run,
	bench/ltlcounter/plot.gnu, bench/ltlcounter/defs.in,
	bench/ltlcounter/Makefile.am: New files.
	* bench/Makefile.am (SUBDIRS): Add ltlcounter.
	* configure.ac (AC_CONFIG_FILES): Adjust.
	* THANKS: Add her.

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2009-11-06  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Use a timer to clock the different phases of the translation.

	* src/tgbatest/ltl2tgba.cc: Add option -T.

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2009-11-08  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Deprecate ltl::destroy(f) in favor of f->destroy()

	* src/ltlast/formula.cc, src/ltlast/formula.hh (formula::clone):
	Transform this static function into a member function.
	* src/ltlvisit/destroy.hh (destroy): Document and declare as
	deprecated.
	* bench/split-product/cutscc.cc, iface/gspn/ltlgspn.cc,
	src/eltlparse/eltlparse.yy, src/eltltest/acc.cc,
	src/evtgbaalgos/tgba2evtgba.cc, src/evtgbatest/ltl2evtgba.cc,
	src/ltlast/automatop.cc, src/ltlast/binop.cc,
	src/ltlast/multop.cc, src/ltlast/unop.cc, src/ltlenv/declenv.cc,
	src/ltlenv/declenv.hh, src/ltlparse/ltlparse.yy,
	src/ltltest/equals.cc, src/ltltest/randltl.cc,
	src/ltltest/readltl.cc, src/ltltest/reduc.cc,
	src/ltltest/syntimpl.cc, src/ltltest/tostring.cc,
	src/ltlvisit/destroy.cc src/ltlvisit/basicreduce.cc,
	src/ltlvisit/contain.cc, src/ltlvisit/reduce.cc,
	src/ltlvisit/syntimpl.cc, src/tgba/bdddict.cc,
	src/tgba/bddprint.cc, src/tgba/taa.cc,
	src/tgba/tgbabddconcretefactory.cc, src/tgba/tgbaexplicit.cc,
	src/tgba/tgbafromfile.cc, src/tgbaalgos/eltl2tgba_lacim.cc,
	src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_fm.cc,
	src/tgbaalgos/ltl2tgba_lacim.cc, src/tgbaalgos/neverclaim.cc,
	src/tgbaalgos/randomgraph.cc, src/tgbaparse/tgbaparse.yy,
	src/tgbatest/complementation.cc, src/tgbatest/eltl2tgba.cc,
	src/tgbatest/ltl2tgba.cc, src/tgbatest/ltlprod.cc,
	src/tgbatest/mixprod.cc, src/tgbatest/randtgba.cc,
	src/tgbatest/reductgba.cc, wrap/python/cgi/ltl2tgba.in,
	wrap/python/tests/ltl2tgba.py, wrap/python/tests/ltlparse.py,
	wrap/python/tests/ltlsimple.py: Adjust destroy() usage, and remove
	the #include "destroy.hh" when appropriate.

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2009-11-08  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Deprecate ltl::clone(f) in favor of f->clone().

	* src/ltlvisit/clone.hh (clone): Document and declare as deprecated.
	* src/ltlast/formula_tree.cc, src/ltlvisit/basicreduce.cc,
	src/ltlvisit/clone.cc, src/ltlvisit/contain.cc,
	src/ltlvisit/lunabbrev.cc, src/ltlvisit/reduce.cc,
	src/ltlvisit/syntimpl.cc, src/tgba/bdddict.cc,
	src/tgba/formula2bdd.cc, src/tgba/tgbabddconcretefactory.cc,
	src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_fm.cc,
	src/tgbatest/complementation.cc, wrap/python/tests/ltlsimple.py:
	Adjust clone() usage, and remove the #include "clone.hh" when
	appropriate.

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2009-11-08  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Make it possible to clone const formulae.

	* src/ltlast/formula.hh, src/ltlast/formula.cc (clone): Declare
	as const.

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2009-11-08  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Rename formula::ref and formula::unref as formula::clone
	and formula::destroy.

	* src/ltlast/atomic_prop.cc, src/ltlast/automatop.cc,
	src/ltlast/binop.cc, src/ltlast/formula.hh, src/ltlast/formula.cc,
	src/ltlast/multop.cc, src/ltlast/unop.cc, src/ltlenv/declenv.cc,
	src/ltlvisit/basicreduce.cc, src/ltlvisit/clone.cc,
	src/ltlvisit/destroy.cc, src/ltlvisit/nenoform.cc,
	src/ltlvisit/randomltl.cc, src/ltlvisit/reduce.cc,
	src/tgbatest/randtgba.cc: Adjust.

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2009-11-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Change the way references are counted to speedup cloning.

	Before this patch, every time you cloned a formula, the clone
	visitor would recurse into the entire AST to increment the
	reference count of all nodes.  When running ltl2tgba_fm on
	the formula generated by "LTLcounterLinear.pl 8", approx 27% of
	the time was spent in the clone visitor.

	After this patch, cloning a formula is just an increment of the
	reference count of the top node.  Children are decremented only
	when the top node's ref count is decremented to zero.  With this
	change, clone() and destroy() become constant time, the
	ltl2tgba_fm spend only 0.01% of the time cloning formulae.


	* src/ltlast/automatop.cc (~automatop): Decrement children.
	(instance): Decrement children if the instance already exists.
	* src/ltlast/binop.cc, src/ltlast/multop.cc, src/ltlast/unop.cc:
	Likewise.
	* src/ltlvisit/clone.cc (clone): Simplify, now we only need to
	call ref().
	* src/ltlvisit/destroy.cc (destroy): Simplify, now we only need
	to call unref().
	(destroy_visitor): Remove, no longer needed.

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2009-11-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Make it easier to debug reference counts in LTL nodes.

	* src/ltlast/automatop.cc, src/ltlast/automatop.hh,
	src/ltlast/binop.cc, src/ltlast/binop.hh, src/ltlast/multop.cc,
	src/ltlast/multop.hh, src/ltlast/unop.cc, src/ltlast/unop.hh:
	Add a dump_instance() static method to all class.
	* src/ltltest/readltl.cc: Add option -r to dump all instances
	with their reference count, after parsing and after deletion.

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2009-11-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Better types for instance maps.

	* src/ltlast/unop.hh (map): Use unop* as values.
	* src/ltlast/binop.hh (map): Use binop* as values.
	* src/ltlast/multop.hh (map): Use multop* as values.
	* src/ltlast/automatop.hh (paircmp): Rename as tripletcmp.
	(map): Use automaton* as values, not formula*.

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2009-11-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Add missing instance_count() in automatop and eltl2tgba.

	* src/ltlast/automatop.hh, src/ltlast/automatop.cc: Add missing
	instance_count() functions.
	* src/tgbatests/eltl2tgba.cc: Add missing instance_count()
	assertions at the end.
	* src/tgbatests/ltl2tgba.cc: Also call automatop::instance_count(),
	even if automatop are not used in ltl2tgba yet.  This way we won't
	forget once eltl2tgba and ltl2tgba are merged.

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2009-11-07  Damien Lefortier <dam@lrde.epita.fr>

	* src/tgba/taa.cc, src/tgbatest/taa.cc: Adjust.

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2009-11-07  Damien Lefortier <dam@lrde.epita.fr>

	* src/tgba/taa.cc, src/tgba/taa.hh: Speed up the cartesian product
	in taa_succ_iterator and allow multiple initial states in taa.
	* src/tgba/ltl2taa.cc: Remove temporary printing.

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2009-11-05  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix ltlcounter.test for VPATH builds and n > 2.

	* src/tgbatest/defs.in (srcdir): Adjust from VPATH builds.
	* src/tgbatest/ltlcounter.test (lcdir): Adjust definition to
	new value of $srcdir.
	(run): Fix setting of $run after $n = 2.  Using run=: would in
	fact disable all the big tests...

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2009-11-05  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltlcounter.test (run): Only construct small
	formulae (i.e. n<=2) under valgrind.  The test case is too
	slow otherwise.

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2009-11-04  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix spurious failure of style.test.

	* src/sanity/style.test: Make sure sh does not abort when read
	exits with false.

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	Fix a longstanding bug reported by Kristin Y. Rozier.
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	* src/ltlast/formula.hh (formula_ptr_less_than::operator()):
	Fix a typo where `l' was typed as `1'.
	* src/tgbatest/ltlcounter/: New files from Kristin Y. Rozier.
	* src/tgbatest/ltlcounter.test: New
	* src/tgbatest/Makefile.am (TESTS): Add ltlcounter.test.
	(EXTRA_DIST): Add files in ltlcounter/.

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2009-11-03  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix the help text of ltl2tgba.

	* src/tgbatest/ltl2tgba.cc (syntax): Add missing std::endl
	before -taa.  Remove -r8 and -fr8, since they do not exist.

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2009-10-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/tgbacomplement.cc (state_complement): Remove the copy
	constructor.  It does the same thing as the default copy
	constructor, and g++ 4.2.3 complained that the copy constructor
	of spot::state was not called.  Reported by Denis Poitrenaud.

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2009-10-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/ltlast/formula_tree.cc (instanciate, arity): Add a useless
	return 0 at the end to prevent g++ 4.2.3 from complaining about
	a missing return.  Reported by Denis Poitrenaud.

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2009-10-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/kv.test: Don't run valgrind on dot!

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2009-10-16  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Escape labels in -KV output.

	* src/tgbaalgos/scc.cc (dump_scc_dot): Escape labels and other
	strings output between quote in dot.
	* src/tgbatest/kv.test: New file.
	* src/tgbatest/Makefile.am (TESTS): Add it.

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2009-10-16  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc: Typos.

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2009-10-22  Damien Lefortier <dam@lrde.epita.fr>

	Improve ltl_to_taa.

	* src/tgba/taa.cc, src/tgba/taa.hh: taa_succ_iterator is not
	on-the-fly anymore allowing some redundant transitions to be
	removed. Also a new function to output a TAA.
	* src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2taa.hh: Add the
	refined rules from Tauriainen.
	* src/tgbatest/ltl2tgba.cc: Use -c to activate refined rules in
	ltl_to_taa.
	* src/tgbatest/spotlbtt.test: More tests.

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2009-10-17  Damien Lefortier <dam@lrde.epita.fr>

	Fix make check in sanity.

	* src/tgba/taa.cc, src/tgbaalgos/ltl2taa.cc: Fix style.

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2009-10-16  Damien Lefortier <dam@lrde.epita.fr>

	Minor fixes.

	* src/misc/bddop.hh, src/tgba/taa.hh, src/tgbaalgos/ltl2taa.hh:
	Fix sanity (incorrect include guard).
	* src/tgba/tgbacomplement.cc, src/tgba/tgbacomplement.hh:
	Copyright 2009.
	* src/tgbaalgos/eltl2tgba_lacim.cc: Use abbreviations.
	* src/tgbatest/taa.cc: Fix it.

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2009-10-16  Damien Lefortier <dam@lrde.epita.fr>

	Add a new algorithm (from Tauriainen) to translate LTL formulae to
	TGBA which uses TAA as an intermediate representation.  This is a
	basic version, optimizations and enhancements will come later.

	* src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2taa.hh: The algortihm.
	* src/tgbaalgos/Makefile.am: Adjust.
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	* src/tgbatest/ltl2tgba.cc: New option: -taa, which uses this new
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	translation algorithm.
	* src/tgbatest/spotlbtt.test: Add ltl2tgba -taa.

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2009-10-04  Damien Lefortier <dam@lrde.epita.fr>

	Add a class to represent Transition-based Alternating Automata (TAA).

	* misc/Makefile.am, misc/bbop.cc, misc/bddop.hh: Factorize some
	code on BDDs to compute all_acceptance_conditions from
	neg_acceptance_condition.
	* src/tgba/Makefile.am, src/tgbatest/Makefile.am: Adjust.
	* src/tgba/taa.cc, src/tgba/taa.hh: The TAA class.
	* src/tgba/tgbaexplicit.hh: Use the factorized code in bddop.hh.
	* src/tgbatest/taa.cc, src/tgbatest/taa.test: Some test cases.

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2009-10-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* AUTHORS: Add Damien Lefortier, Guillaume Sadegh, and Flix
	Abecassis.

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2009-10-01  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	The sgba proxy adds an acceptance condition to every states when
	the original automaton has no acceptance condition.

	* src/tgba/tgbasgba.cc, src/tgba/tgbasgba.hh: New option:
	when the original automaton has no accepting condition, it
	explicitly considers that every state is accepting.

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2009-09-30  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/tgba/tgbacomplement.cc: Move functions related to
	shared_ptr on states...
	* src/tgba/state.hh: ... here.
	* src/tgbatest/complementation.test: Do not apply some tests on
	the new algorithm because it takes to much time to run.

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2009-09-29  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	A new complementation construction based on ranking.

	* src/tgba/tgbacomplement.cc, src/tgba/tgbacomplement.hh: The
	construction.
	* src/tgbatest/Makefile.am: Adjust.
	* src/tgbatest/complementation.cc: Add options to support this
	construction in addition to Safra construction.
	* src/tgba/Makefile.am: Adjust.
	* src/tgbatest/complementation.test: Adjust to test also this
	complementation.

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2009-09-29  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/ltltest/randltl.cc, src/ltltest/reduc.test,
	src/tgbatest/dfs.test: Adjust headers to 80 columns.

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2009-09-24  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	A wrapper around tgba to produce state-labeled automata.

	* src/tgba/tgbasgba.hh, src/tgba/tgbasgba.hh: Here.
	* src/tgbatest/ltl2tgba.cc: New option `-lS' for state-labeled
	automata.
	* src/tgba/Makefile.am: Adjust and sort files in tgba_HEADERS
	and libtgba_la_SOURCES.

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2009-09-21  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Rename files related to Safra complementation.

	* src/tgba/tgbacomplement.cc, src/tgba/tgbacomplement.hh: Rename
	as...
	* src/tgba/tgbasafracomplement.cc,
	src/tgba/tgbasafracomplement.hh: ... these, and adjust class name.
	* src/tgba/Makefile.am, src/tgbatest/Makefile.am: Adjust.
	* src/tgbatest/complementation.cc: Adjust.

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2009-09-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix previous patch.

	* src/tgbaalgos/scc.cc (scc_map::update_supp_rec): Also take the
	label of the outgoing edges into account.

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2009-09-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Optimize previous patch.

	* src/tgbaalgos/scc.hh (scc_map::scc::supp_rec): Initialize to
	bddfalse, since this cannot occur in reallife.
	* src/tgbaalgos/scc.cc (scc_map::update_supp_rec): Adjust.

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2009-09-17  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Have scc_map keep track of APs that are reachable from a SCC.

	* src/tgbaalgos/scc.hh (scc_map::scc): Add a supp_rec member to
	hold reachable APs.
	* src/tgbaalgos/scc.cc (scc_map::update_supp_rec): New function,
	to update supp_rec.
	(scc_map::build_map): Call it.
	(scc_map::aprec_set_of): New function.
	(dump_scc_dot): Show the output of aprec_set_of().

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2009-09-17  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Have scc_map keep track of APs that are occurring in a SCC.

	* src/tgbaalgos/scc.hh (scc_map::scc): Add a supp member to hold APs.
	* src/tgbaalgos/scc.cc (scc_map::build_map): Update supp.
	(scc_map::ap_set_of): New function.
	(dump_scc_dot): Show the output of ap_set_of().

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2009-09-07  Damien Lefortier <dam@lrde.epita.fr>

	Fix some memory leaks.

	* src/eltlparse/eltlparse.yy: Free the automatop::vec when
	CHECK_ARITY fails while parsing an automatop.
	* src/eltltest/acc.cc: Free all constructed formulae.

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2009-09-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix a memory leak in reduce_tau03().

	* src/ltlvisit/contain.cc (reduce_tau03_visitor::visit): Free
	the operand array when a multop reduces to a constant.

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2009-09-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix a memory leak in randltl.

	* src/ltltest/randltl.cc: Free the atomic properties from AP
	before exit.

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2009-09-04  Damien Lefortier <dam@lrde.epita.fr>

	Add an algorithm (from Couvreur) working on BDDs to reduce the
	size of TGBAs represented as BDDs by deleting unaccepting SCCs.

	* src/eltlparse/eltlparse.yy: Remove a warning.
	* src/tgba/tgbabddconcrete.cc, src/tgba/tgbabddconcrete.hh,
	src/tgba/tgbabddcoredata.cc, src/tgba/tgbabddcoredata.hh: Add a
	new function delete_unaccepting_scc in both classes.
	* src/tgbatest/eltl2tgba.cc, src/tgbatest/spotlbtt.test: Use this
	new function in LaCIM for ELTL and bench it.
	* src/tgbatest/defs.in: Fix it.
	* bench/ltl2tgba/algorithms, bench/ltl2tgba/defs.in: Add LaCIM for
	ELTL in benchs.

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2009-09-01  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix path to libtool in test suites.

	* src/ltltest/defs.in, src/eltltest/defs.in, src/tgbatest/defs.in,
	src/evtgbatest/defs.in (run): Use ../../../libtool instead of
	../../libtool, now that testcases have been moved down one directory.

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2009-08-31  Alexandre Duret-Lutz  <adl@va-et-vient.net>

	Use Automake 1.11's parallel-tests feature.

	* configure.ac: Enable parallel-tests.
	* src/eltltest/defs.in, src/evtgbatest/defs.in,
	src/ltltest/defs.in, src/tgbatest/defs.in: Always output verbose
	tests.  Make a subdirectory for each test case.
	* src/ltltest/Makefile.am, src/eltltest/Makefile.am,
	src/tgbatest/Makefile.am, src/evtgbatest/Makefile.am: Remove
	CLEANFILES and clean the test subdirectories in a distclean-local
	rule instead.
	* src/eltltest/acc.test, src/eltltest/nfa.test,
	src/evtgbatest/explicit.test, src/evtgbatest/ltl2evtgba.test,
	src/evtgbatest/product.test, src/evtgbatest/readsave.test,
	src/ltltest/equals.test, src/ltltest/lunabbrev.test,
	src/ltltest/nenoform.test, src/ltltest/parse.test,
	src/ltltest/parseerr.test, src/ltltest/reduc.test,
	src/ltltest/reduccmp.test, src/ltltest/syntimpl.test,
	src/ltltest/tostring.test, src/ltltest/tunabbrev.test,
	src/ltltest/tunenoform.test, src/tgbatest/bddprod.test,
	src/tgbatest/complementation.test, src/tgbatest/dfs.test,
	src/tgbatest/dupexp.test, src/tgbatest/eltl2tgba.test,
	src/tgbatest/emptchk.test, src/tgbatest/emptchke.test,
	src/tgbatest/emptchkr.test, src/tgbatest/explicit.test,
	src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
	src/tgbatest/explpro4.test, src/tgbatest/explprod.test,
	src/tgbatest/ltl2neverclaim.test, src/tgbatest/ltl2tgba.test,
	src/tgbatest/ltlprod.test, src/tgbatest/mixprod.test,
	src/tgbatest/readsave.test, src/tgbatest/reduccmp.test,
	src/tgbatest/reductgba.test, src/tgbatest/scc.test,
	src/tgbatest/spotlbtt.test, src/tgbatest/tgbaread.test,
	src/tgbatest/tripprod.test: Adjust to run from a subdirectory.

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	* configure.ac: Switch to Automake 1.11 and enable color-tests.

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2009-08-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* configure.ac: Switch from Libtool 1.5.x to Libtool 2.x, and
	add an AC_CONFIG_MACRO_DIR call.
	* m4/libtool.m4, tools/ltmain.sh: Remove.

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2009-07-30  Felix Abecassis <abecassis@lrde.epita.fr>

	Add TGBA union implementation.

	* src/tgba/tgbaunion.cc, src/tgba/tgbaunion.hh: New files.
	Union of two TGBAs.
	* src/tgba/Makefile.am: Adjust.

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	* m4/intel.m4: Fix to support the cache.

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2009-07-08  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/tgba/tgbacomplement.cc: Stay on 80 columns.
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2009-07-08  Flix Abecassis <abecassis@lrde.epita.fr>

	Add 2 benchmarks directories.
	Add an algorithm to split an automaton in several automata.

	* bench/scc-stats: New directory.  Contains input files and test
	program for computing statistics.
	* bench/split-product: New directory.  Contains test program for
	synchronised product on splitted automata.
	* bench/split-product/models: New directory.  Contains Promela
	files, and LTL formulae that should be verified by the models.
	* src/tgba/tgbafromfile.cc, src/tgba/tgbafromfile.hh:
	New files.  Small class to avoid long initializations with numerous
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	constants when translating to TGBA many LTL formulae from a
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	given file.
	* src/tgbaalgos/cutscc.cc, src/tgbaalgos/cutscc.hh:
	New file.  From a single automaton, create, at most,
	X sub automata.
	* src/tgbaalgos/scc.cc, src/tgbaalgos/scc.hh:
	Adjust to compute self-loops count.

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2009-07-07  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/tgba/tgbacomplement.cc: Fix the transformation from
	Streett to TGBA.
	* src/tgbatest/complementation.test: Modify tests.
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2009-06-17  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* bench/emptchk/pml2tgba.pl: Adjust to work with Spin 5.2.0.

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2009-06-12  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Adjust the build system for ICC.

	* m4/intel.m4: Remove the `-W' option from CXXFLAGS since icpc
	does not support it. Inhibit the warning ``method was declared
	but never referenced''.

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2009-06-11  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Kill a g++-4.2 warning.

	* src/tgba/tgbacomplement.cc (state_complement::state_complement)
	explicitly initialize the base class spot::state.

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2009-06-10  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	During the complementation, transform the auxiliary Streett
	automaton into a TGBA instead of a TBA.

	* src/tgba/tgbacomplement.hh, src/tgba/tgbacomplement.cc:
	Adjust the transformation from Streett to Bchi to support
	generalized acceptance conditions.
	* src/tgbatest/complementation.cc: Improve output messages.
	* src/tgbatest/complementation.test: New tests.

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	* src/tgba/tgbacomplement.cc, src/tgbatest/complementation.cc:
	Fix style.
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2009-06-07  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/tgba/tgbacomplement.cc (state_complement::hash): Improve
	the hash function.

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2009-06-09  Damien Lefortier <dam@lrde.epita.fr>

	* src/eltlparse/eltlparse.yy: Fix a memory leak.
	* src/eltltest/nfa.cc: Adjust.
	* src/tgbaalgos/eltl2tgba_lacim.cc: Fix a memory leak.

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2009-06-05  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Remove generated files that git follows.

        * INSTALL, lbtt/INSTALL, lbtt/doc/texinfo.tex: Do not track
	anymore these generated files.

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2009-06-05  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Add an algorithm to complement Bchi automata.

	* src/tgba/tgbacomplement.hh, src/tgba/tgbacomplement.cc: New
	files. The complementation algorithm.
	* src/tgba/Makefile.am: Adjust.
	* src/tgbatest/complementation.test,
	src/tgbatest/complementation.cc: New files. Test suite for the
	complementation algorithm.
	* src/tgbatest/Makefile.am: Adjust.
	* src/tgbaalgos/Makefile.am: Reformat the header using 80
	columns.

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2009-06-05  Damien Lefortier <dam@lrde.epita.fr>

	Modify the ELTL parser to be able to support PSL operators.  Add a
	new keyword in the ELTL format: finish, which applies to an
	automaton operator and tells whether it just completed.

	* src/eltlparse/eltlparse.yy: Clean it. Add finish.
	* src/eltlparse/eltlscan.ll: Add finish.
	* src/formula_tree.cc, src/formula_tree.hh: New files. Define a
	small AST representing formulae where atomic props are unknown
	which is used in the ELTL parser.
	* src/ltlast/automatop.cc, ltlast/automatop.hh, ltlast/nfa.cc,
	ltlast/nfa.hh: Adjust.
	* src/ltlast/unop.cc, src/ltlast/unop.hh: Finish is an unop.
	* src/ltlvisit/basicreduce.cc, src/ltlvisit/nenoform.cc,
	src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
	src/ltlvisit/tostring.cc, src/ltlvisit/tunabbrev.cc,
	src/tgba/formula2bdd.cc, src/tgbaalgos/ltl2tgba_fm.cc,
	src/tgbaalgos/ltl2tgba_lacim.cc: Handle finish in switches.
	* src/tgbaalgos/eltl2tgba_lacim.cc: Translate finish.
	* src/tgbatest/eltl2tgba.test: More tests.

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2009-06-02  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/scc.test: Redirect stdout into file `stdout'
	instead of `out', to conform to other tests, and add a missing
	call to diff.

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2009-06-02  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Introduce some experimental kripke classes to simplify writing
	interfaces.

	* src/kripke/Makefile.am, src/kripke/fairkripke.cc,
	src/kripke/fairkripke.hh, src/kripke/kripke.cc,
	src/kripke/kripke.hh: New files.
	* src/Makefile.am: Recurse into kripke and link libkripke.la.
	* configure.ac: Output src/kripke/Makefile.

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2009-06-02  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/scc.test: New file.
	* src/tgbatest/Makefile.am: Adjust.
	* src/tgbaalgos/scc.hh: More documentation.
	* src/tgbaalgos/scc.cc (scc_recurse): Fix computation of
	acc_paths and dead_paths.  Prevent recursions in states that
	have already been visited.

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2009-05-31  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Lift the SCC computation off future_condition_collectors, into
	a new tgba_scc class.

	* src/tgba/futurecondcol.cc, src/tgba/futurecondcol.hh: Move
	all delegation functions and scc_map into ...
	* src/tgba/tgbascc.cc, src/tgba/tgbascc.hh: ... these new files.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Test "ltl2tgba -FC" and plug the memory leaks of scc_map.

	* src/tgbaalgos/scc.hh (scc_map::~scc_map): Declare it.
	* src/tgbaalgos/scc.cc (scc_map::~scc_map): Implement it.
	(scc_map::build_map): Delete duplicate states.
	* src/tbbatest/ltl2tgba.test: Run ltl2tgba -FV to catch
	memory leaks with valgrind.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Implement spot::future_conditions_collector.

	* src/tgba/futurecondcol.hh, src/tgba/futurecondcol.cc:
	New files.
	* src/tgba/Makefile.am: Adjust.
	* src/tgbatest/ltl2tgba.cc: Add option -FC.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/scc.cc (dump_scc_dot): Use a bit vector instead of
	a map to track visited SCC since they are sequentially numbered.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Number states using negative values and SCCs using nonnegative
	values.

	Before this change states were numbered using positive values and
	SCCs using negative values.  That meant the user had to work with
	negative values.  With this changes, the nonnegative values used
	to label SCCs can also directly be used as index in the scc_map_.

	* src/tgbaalgos/scc.hh (scc_map::scc_of_state,
	scc_map::cond_set_of, scc_map::acc_set_of, scc_map::states_of,
	scc_map::initial, scc_map::scc_type, scc_map::succ,
	scc_map::accepting): Adjust prototypes to take or return unsigned
	arguments.
	* src/tgbaalgos/scc.cc: Adjust prototypes of the above functions.
	(scc_map::build_map, scc_map::relabel_component): Number states
	using negative values, and SCCs using nonnegative values.
	(dump_scc_dot): Adjust to use nonnegative values.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Store the scc_map_ as a vector instead of a std::map.  There is no
	point in using a map since the SCC are numbered in sequence.

	* src/tgbaalgos/scc.hh (scc_map::relabel_component): Return the
	number of the SCC instead of taking it as argument.
	(scc_map::scc_num_): Delete this variable.  scc_map_.size() gives
	the same information.
	(scc_map::scc_map_type): Define using std::vector instead of
	std::map.
	* src/tgbaalgos/scc.cc: Adjust all uses.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Keep track of conditions in SCC, and add a more verbose dump.

	* src/tgbaalgos/scc.hh (scc_map::scc_of_state,
	scc_map::cond_set_of, scc_map::acc_set_of, scc_map::states_of):
	New functions.
	(scc_map::scc::conds): New attribute.
	(dump_scc_dot): Take an optional VERBOSE argument.
	* src/tgbaalgos/scc.cc (scc_map::scc_of_state,
	scc_map::cond_set_of, scc_map::acc_set_of, scc_map::states_of):
	Implement these new functions.
	(dump_scc_dot): Display number of states, conditions and
	acceptance conditions, with VERBOSE is set.
	(build_map): Fill the new scc_map::scc::cond field.

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2009-05-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/scc.cc (scc_map::relabel_component): Make sure
	that the old label of each state is strictly positive.  The
	previous assertion (inherited from gtec) of "!= -1" is wrong,
	because all negative values are now used to number SCCs.

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2009-05-26  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/tgba.hh (format_state): s/automata who/automata that/.
	* src/evtgba/evtgba.hh (format_state): Likewise.
	* src/evtgba/product.hh (format_state): Likewise.

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2009-04-18  Damien Lefortier <dam@lrde.epita.fr>

	Extend the ELTL parser to support more complex aliases of
	automaton operators such as Strong=G(F($0))->G(F($1)) and
	G=R(false, $0).

	* src/eltlparse/eltlparse.yy, src/eltlparse/eltlscan.ll: Add
	support for more complex aliases.
	* src/eltltest/acc.cc, src/eltltest/acc.test: Adjust.
	* src/ltlast/nfa.cc, src/ltlast/nfa.hh (arity): Now returns an
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