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

	* 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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2009-07-09  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* 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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	* 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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	* 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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	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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	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
	unsigned value.
	* src/tgbatest/eltl2tgba.test: Adjust.
	* src/tgbalagos/eltl2tgba_lacim.cc: Fix sanity.

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2009-04-09  Guillaume SADEGH  <sadegh@lrde.epita.fr>

	Minor fixes to compile with GCC 4.4.

	* src/eltlparse/eltlparse.yy (subformula): Avoid a comparaison
	between a signed and an unsigned value.
	* src/ltlast/automatop.hh, src/ltlast/automatop.cc (nfa): Avoid
	a name clash with the `nfa' class.

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2009-04-08  Damien Lefortier <dam@lrde.epita.fr>

	Correct LaCIM for ELTL and make it work with LBTT.

	* src/eltlparse/eltlparse.yy: Adjust.
	* src/ltlast/automatop.cc, src/ltlast/automatop.hh,
	src/ltlvisit/clone.cc, src/ltlvisit/nenoform.cc: Clean the way we
	handle the negation of automaton operators.
	* src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh: Add an
	optional argument to output a fully parenthesized string.
	* src/tgbaalgos/eltl2tgba_lacim.cc: Fix it.
	* src/tgbatest/eltl2tgba.cc: Add a new option (-L) to read formulae
	from an LBTT-compatible file.
	* src/tgbatest/eltl2tgba.test: A new tests.
	* src/tgbatest/spotlbtt.test: Add LaCIM for ELTL.

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

	Extend the ELTL parser to support basic aliases of automaton
	operators such as F=U(true,$0) or R=!U(!$0,!$1), and infix
	notation for binary automaton operators.

	* README: Document the ELTL directories.
	* src/eltlparse/eltlparse.yy, src/eltlparse/eltlscan.ll: Add
	support for aliases and infix notation.
	* src/eltlparse/public.hh, src/ltlast/nfa.cc, src/ltlast/nfa.hh:
	Clean them.
	* src/eltltest/acc.test, src/tgbatest/eltl2tgba.test: Add tests
	for the ELTL parser's extensions.
	* src/tgbatest/eltl2tgba.cc: Adjust.

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2009-03-26  Damien Lefortier <dam@lrde.epita.fr>

	Add support for ELTL (AST & parser), and an adaptation of LaCIM
	for ELTL.

        * configure.ac: Adjust for src/eltlparse/ and src/eltltest/
	directories, and call AX_BOOST_BASE.
	* m4/boost.m4: New file defining AX_BOOST_BASE([MINIMUM-VERSION]).
	* src/Makefile.am: Add eltlparse and eltltest.
	* src/eltlparse/: New directory.  Contains the ELTL parser.
	* src/eltltest/: New directory.  Contains tests related to
	ELTL (parser and AST).
	* src/ltlast/Makefile.am: Adjust for ELTL AST files.
	* src/ltlast/automatop.cc, src/ltlast/automatop.hh: New files.
	Represent automaton operators nodes used in ELTL ASTs.
	* src/ltlast/nfa.cc, src/ltlast/nfa.hh: New files.  Represent
	simple NFAs used internally by automatop nodes.
	* src/ltlast/allnode.hh, src/ltlast/predecl.hh,
	src/ltlast/visitor.hh: Adjust for automatop.
	* src/ltlvisit/basicreduce.cc, src/ltlvisit/clone.cc,
	src/ltlvisit/clone.hh, src/ltlvisit/contain.cc,
	src/ltlvisit/dotty.cc, src/ltlvisit/nenoform.cc,
	src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh,
	src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
	src/ltlvisit/tostring.cc: Because LTL and ELTL formulae share the
	same class hierarchy, LTL visitors need to handle automatop nodes
	to compile.  When it's meaningful the visitor applies on automatop
	nodes or simply assert(0) otherwise.
	* src/tgba/tgbabddconcretefactory.cc (create_anonymous_state),
	src/tgba/tgbabddconcretefactory.hh (create_anonymous_state): New
	function used by the LaCIM translation algorithm for ELTL.
	* src/tgbaalgos/Makefile.am: Adjust for eltl2tgba_lacim* files.
	* src/tgbaalgos/eltl2tgba_lacim.cc,
	src/tgbaalgos/eltl2tgba_lacim.hh: New files.  Implementation of
	the LaCIM translation algorithm for ELTL.
	* src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc:
	Handle automatop nodes in the translation by an assert(0).
	* src/tgbatest/Makefile.am: Adjust for eltl2tgba.* files.
	* src/src/tgbatest/eltl2tgba.cc, src/tgbatest/eltl2tgba.test: New
	files.

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2009-03-25  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/evtgbaparse/evtgbaparse.yy: Stay on 80 columns.

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2009-03-25  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Update parsers to work with Bison 2.4.1.

	* HACKING: Mention that we require Bison >= 2.4 for developers.
	* src/evtgbaparse/evtgbaparse.yy, src/tgbaparse/tgbaparse.yy,
	src/ltlparse/ltlparse.yy: The sections "%{ ... %}" should now be
	renamed "%code requires { ... }" or "%code { ... }" depending on
	whether they should end up in the parser's header file or its cc
	file.  Also use %language, %locations, %defines, instead of
	command-line arguments.
	* src/evtgbaparse/Makefile.am, src/tgbaparse/Makefile.am,
	src/ltlparse/Makefile.am: Remove the --locations, --defines
	and --languages in the call to bison.  Add -Wall -Werror to
	catch more errors.
	Thanks to Akim Demaille <akim@lrde.epita.fr> for the help.

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2009-03-25  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/scc.hh: Add missing misc/hash.hh inclusion.

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2009-02-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/tgbaproduct.cc (tgba_succ_iterator_product::first):
	Typo in comment.

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2009-02-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/tgba.hh: Typos.

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2009-02-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/succiterconcrete.cc (tgba_succ_iterator_concrete::next):
	Typos.

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2008-12-17  Guillaume SADEGH  <sadegh@lrde.epita.fr>
	Update to compile with GCC 4.4.0 (trunk).

	* src/tgba/tgbabddconcrete.cc (tgba_bdd_concrete::succ_iter):
	Rename `state' as `local_state'.

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2008-12-11  Guillaume SADEGH  <sadegh@lrde.epita.fr>

	Update to compile with the Intel compiler.

  	* m4/intel.m4: New file.
	* configure.ac: Update.
	* src/tgbaalgos/emptiness.cc (tgba_run): Modify s.s->clone() in
	i->s->clone().
	* src/misc/optionmap.hh, src/misc/optionmap.cc: Remove the extra
	`;' after the namespace.
        * src/tgbaalgos/tau03opt.cc
	(tau03_opt_search::add_new_state): Remove unreferenced method.
        * src/tgbaalgos/ltl2tgba_fm.cc
	(translate_dict::dump): Remove unreferenced method.
        * src/tgbaalgos/lbtt.cc
	(acceptance_cond_splitter::count): Remove unreferenced method.
        * src/tgba/tgbabddconcreteproduct.cc
	(tgba_bdd_product_factory::get_dict): Remove unreferenced method.
        * src/ltlvisit/syntimpl.cc
        (eventual_universal_visitor::recurse): Remove unreferenced method.
	* src/tgbaalgos/reductgba_sim.cc: Reindent.

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2008-12-11  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Compute more statistics about SCCs.

	* src/tgbaalgos/scc.hh (scc_stats): Add new attributes:
	acc_scc, dead_scc, acc_paths, dead_paths.
	* src/tgbaalgos/scc.hh (scc_stats::dump): Display them.
	(build_scc_stats): Compute them.
	(scc_recurse_data, scc_recurse): New helper structure and function.

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2008-12-11  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix tracking of SCCs on the search stack.

	* src/tgbaalgos/scc.hh (scc::arc_): Rename as ...
	(scc::arc_acc_): ... this.
	(scc::arc_cond_): New attribute.
	* src/tgbaalgos/scc.cc (build_map): Adjust and keep
	track of transitions between SCCs on the search stack.

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2008-12-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/scc.hh, src/tgbaalgos/scc.cc: New files.
	* src/tgbaalgos/Makefile.am: Add them.
	* src/tgbatest/ltl2tgba.cc (-k): Also call build_scc_stats().
	(-K): New option that dumps the SCCs for dot.

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2008-12-05  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltl2tgba.cc (-k): New option that calls
	stats_reachable(a).dump().
	* src/tgbaalgos/stats.cc, src/tgbaalgos/stats.hh:
	Add tgba_statistics::dump().

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2008-08-29  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* bench/gspn-ssp/tools/modelgen-create: Remove and fold into ...
	* bench/gspn-ssp/tools/bench-create: ... this.
	* bench/gspn-ssp/Makefile.am: Update.
	* bench/gspn-ssp/bench.mk: Regen.

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	* bench/gspn-ssp/tools/defs.in (TMPDIR): New variable.
	* bench/gspn-ssp/tools/runbench: Use it.

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	* bench/gspn-ssp/tools/sum: Fix the order of stats in -e4.
	If the MAXLINES environment variable is defined, flush the page
	as needed.  Sort the models only once.

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2008-08-27  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* bench/gspn-ssp/README: New file.
	* bench/gspn-ssp/Makefile.am (EXTRA_DIST): Distribute it.

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2008-08-27  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* bench/gspn-ssp/tools/sum: Output WCSsym* and WCSasym* on
	separate lines.  Canonize the names used as keys to that
	WCSsymN appears always in the same column as WCSasymN.  Read the
	*.log files directly, we don't need the *.all files anymore.
	* bench/gspn-ssp/tools/collate: Delete.
	* bench/gspn-ssp/tools/Makefile.am: Adjust.
	* bench/gspn-ssp/tools/bench-create: Do not output rules to
	build *.all files.

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2008-08-26  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Build the benchmark in bench/gspn-ssp/ using makefiles, so we
	can run them easily in parallel using "make -j2".

	* bench/gspn-ssp/bench: Remove, it is now replaced by Makefile rules.
	* bench/gspn-ssp/benchaux: Remove, now implemented by...
	* bench/gspn-ssp/tools/runbench, bench/gspn-ssp/tools/collate:
	... these new files.
	* bench/gspn-ssp/defs.in: Use absolute filenames.
	* bench/gspn-ssp/gen: Remove, it is now replaced
	by tools/modelgen-create.
	* bench/gspn-ssp/sumall: Delete.
	* bench/gspn-ssp/templates/WCSsym/gen,
	bench/gspn-ssp/templates/bagrodia/gen,
	bench/gspn-ssp/templates/common,
	bench/gspn-ssp/templates/gen, bench/gspn-ssp/templates/predef/gen,
	* bench/gspn-ssp/Makefile.am: Inlucde modelgen.mk, bench.mk, as
	well as all the tools.
	* bench/gspn-ssp/bench.mk, bench/gspn-ssp/modelgen.mk: New
	files, generated by ...
	* bench/gspn-ssp/tools/bench-create,
	bench/gspn-ssp/tools/modelgen-create: ... these new files.
	* bench/gspn-ssp/sum: Rename as ...
	* bench/gspn-ssp/tools/sum: ... this, adjust for the new system,
	and keep track of the inclusion count created by the previous patch.

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	* iface/gspn/ssp.cc (numbered_state_heap_ssp_semi): Keep track
	of the number of inclusions detected.

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	* bench/gspn-ssp/Makefile.am, bench/gspn-ssp/trans2prop.pl: New files.
	* bench/gspn-ssp/config: Rename as bench/gspn-ssp/defs.in.
	* bench/Makefile.am (SUBDIRS): Add gspn-ssp.
	* configure.ac: Output bench/gspn-ssp/Makefile and bench/gspn-ssp/defs.
	* bench/gspn-ssp/bench: Include defs.

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	* bench/gspn-ssp/: New directory.  Contains some of the benches
	used in baarir.06.tr03, baarir.07.acsd, and baarir.07.msr.

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	* iface/gspn/ltlgspn.cc: New option: -e54.
	* iface/gspn/ssp.hh, iface/gspn/ssp.cc: Add the
	reversed_double_inclusion boolean for this.

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2008-06-12  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* iface/nips/nipstest/dotty.test,
	iface/nips/nipstest/emptiness.test: Prefix bytecode filenames
	with $srcdir so the tests work in VPATH builds.

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	* iface/nips/dottynips.cc: Include ctsdlib for exit().
	* iface/nips/emptiness_check.cc: Likewise.

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	* src/sanity/includes.test: Remove empty line at beginning of file.

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	Test suite for the NipsVM front-end.

	* iface/nips/nipstest/Makefile.am, iface/nips/Makefile.am,
	configure.ac, iface/nips/nipstest/emptiness.test,
	iface/nips/nipstest/dotty.test: Test suite for the NipsVM
	front-end.
	* iface/nips/emptiness_check.cc, iface/nips/dottynips.cc: `catch'
	don't throw anymore an exception, but exit with 1.
	* iface/nips/common.cc, iface/nips/nips.cc (nips_interface):
	Change messages of nips_exception.

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	* src/sanity/includes.test (INCDIR): Remove any trailing slash.

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	Install interfaces' headers in the spot/iface/ directory, not
	directly in the spot/ directory.

	* iface/gspn/Makefile.am (gspndir): Install in spot/iface/gspn/.
	* iface/nips/Makefile.am (nipsdir): Install in spot/iface/nips/.

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	* iface/nips/nips_vm/Makefile.am: Do not install NipsVM.

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	* iface/nips/Makefile.am (empt_check_LDADD, dottynips_LDADD):
	Do not link libnipsvm.la here...
	(libspotnips_la_LIBADD): ... do it here.

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	* iface/nips/nips.cc, iface/nips/nips.hh, iface/nips/common.cc,
	iface/nips/common.hh, iface/nips/Makefile.am: TGBA implementation
	with the NIPS library.
	* iface/nips/emptiness_check.cc: Emptiness check on a Promela
	interface.
	* iface/nips/dottynips.cc: Dot printer on the NIPS interface.
	* iface/nips/compile.sh: Add. Wrapper around nips compiler to
	compile Promela to NIPS bytecode.
	* iface/nips/nips_vm,iface/nips/nips_vm/bytecode.h,
	iface/nips/nips_vm/ChangeLog, iface/nips/nips_vm/COPYING,
	iface/nips/nips_vm/hashtab.c, iface/nips/nips_vm/hashtab.h,
	iface/nips/nips_vm/INSTALL, iface/nips/nips_vm/instr.c,
	iface/nips/nips_vm/instr.h, iface/nips/nips_vm/instr_step.c,
	iface/nips/nips_vm/instr_step.h,
	iface/nips/nips_vm/instr_tools.c,
	iface/nips/nips_vm/instr_tools.h,
	iface/nips/nips_vm/instr_wrap.c,
	iface/nips/nips_vm/instr_wrap.h,
	iface/nips/nips_vm/interactive.c,
	iface/nips/nips_vm/interactive.h, iface/nips/nips_vm/main.c,
	iface/nips/nips_vm/Makefile, iface/nips/nips_vm/Makefile.am,
	iface/nips/nips_vm/nips_asm_help.pl,
	iface/nips/nips_vm/nips_asm_instr.pl,
	iface/nips/nips_vm/nips_asm.pl,
	iface/nips/nips_vm/nips_disasm.pl, iface/nips/nips_vm/nipsvm.c,
	iface/nips/nips_vm/nipsvm.h, iface/nips/nips_vm/README,
	iface/nips/nips_vm/rt_err.c, iface/nips/nips_vm/rt_err.h,
	iface/nips/nips_vm/search.c, iface/nips/nips_vm/search.h,
	iface/nips/nips_vm/split.c, iface/nips/nips_vm/split.h,
	iface/nips/nips_vm/state.c, iface/nips/nips_vm/state.h,
	iface/nips/nips_vm/state_inline.h,
	iface/nips/nips_vm/state_parts.c,
	iface/nips/nips_vm/state_parts.h, iface/nips/nips_vm/timeval.h,
	iface/nips/nips_vm/tools.h: NIPS VM added to the SPOT
	distribution.
	* configure.ac, iface/Makefile.am: Build system updated for the
	NIPS front-end.

	* src/Makefile.am (_.cc): Fix for `make tags`.

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2008-04-14  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Kill some FIXMEs.

	* src/ltlenv/environment.hh, src/ltlvisit/basicreduce.cc: Remove
	useless FIXMEs.
	* src/ltlvisit/reduce.cc (reduce_visitor::visit(binop)): Compute
	syntactic implications only when needed.
	* src/tgbaalgos/reductgba_sim_del.cc
	(build_recurse_successor_spoiler): Remplace the FIXME by an assert.
	* src/tgba/tgbareduc.cc: Reword some comments, discard old
	commented code.

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2008-03-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/evtgbaparse/Makefile.am (AM_CXXFLAGS): Remove -Werror
	so we tolerate more flex versions.
	* src/ltlparse/Makefile.am (AM_CXXFLAGS): Likewise.
	* src/tgbaparse/Makefile.am (AM_CXXFLAGS): Likewise.

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2008-03-25  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/misc/hash.hh: Second thinko in #if/#else.

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2008-03-25  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/misc/hash.hh: Thinko in #if/#else.

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2008-03-21  Damien Lefortier <dam@lrde.epita.fr>

	* src/misc/freelist.hh: Avoid <iostream> in headers, better use <iosfwd>.

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2008-03-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltl2tgba.cc, src/misc/hash.hh: Reformat the header
	using 80 columns.

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2008-03-14  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Make sure Spot compiles with g++-4.3.

	* src/ltlast/formula.hh (hash): Remove const from return type.
	This kills a g++-4.3 warning.
	* src/misc/hash.hh: Adjust to use unordered_set and unordered_map
	from TR1 when g++-4.3 is used.
	* src/evtgba/product.cc, src/ltltest/randltl.cc,
	src/ltlvisit/randomltl.cc, src/ltlvisit/tostring.cc,
	src/misc/freelist.hh, src/misc/optionmap.cc,
	src/tgba/tgbareduc.hh, src/tgbaalgos/gv04.cc,
	src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/randomgraph.cc,
	src/tgbatest/ltl2tgba.cc, src/tgbatest/randtgba.cc,
	src/ltltest/equals.cc, src/ltltest/readltl.cc,
	src/ltltest/reduc.cc, src/ltltest/syntimpl.cc,
	src/ltltest/tostring.cc, src/tgbatest/ltlprod.cc,
	src/tgbatest/powerset.cc, src/tgbatest/explprod.cc,
	src/tgbatest/mixprod.cc, src/tgbatest/readsave.cc,
	src/tgbatest/reductgba.cc, src/tgbatest/tgbaread.cc,
	src/tgbatest/tripprod.cc, src/evtgbatest/product.cc,
	src/evtgbatest/readsave.cc, src/evtgbatest/ltl2evtgba.cc,
	src/evtgbatest/readsave.cc: Add missing includes.
	* src/tgbatest/explicit.test, src/tgbatest/explprod.test,
	src/tgbatest/explpro2.test, src/tgbatest/troprod.test,
	src/tgbatest/emptchk.test: Cope with different outputs.

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2008-03-11  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* doc/Doxyfile.in (LATEX_HIDE_INDICES): Do not generate indices
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	until Doxygen is fixed.  Doxygen 1.5.5 generates incorrect LaTeX
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	code.

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2008-02-27  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/reachiter.hh: Typos in comments.

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2008-02-22  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/tgbabddconcretefactory.hh (create_state):
	Clarify comments.

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2008-02-01  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/gtec/gtec.cc (couvreur99_check_shy::dump_queue):
	Remove superfluous semicolon.

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2008-01-10  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/reductgba_sim.cc (reduc_tgba_sim): Add two
	assert().  This patch has been lying in my tree since 2007-04-30.

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2008-01-08  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	This is something Soheib and I worked on back in July, but a
	intricate memory corruption bug prevented me to check the patch
	in.  It took me two days to realize why find_state() must do a
	double loop over the candidates to check for equality before
	checking for inclusion(s).

	* iface/gspn/ltlgspn.cc: New options, -e45 and -n.
	* iface/gspn/ssp.cc, iface/gspn/ssp.hh: Handle these.
	* src/tgbaalgos/gtec/gtec.cc (TRACE): Add some debugging traces.
	(couvreur99_check_shy::dump_queue): New function.
	* src/tgbaalgos/gtec/gtec.hh (couvreur99_check_shy::dump_queue):
	New function.

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2007-11-29  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Keep libtool's files under CVS so that we don't use the broken
	Debian versions installed in build hosts during automatic builds.

	* m4/libtool.m4: New file, from GNU Libtool 1.4.24.
	* tools/ltmain.sh: New file, from GNU Libtool 1.4.24.
	* HACKING: Installing Libtool is no longer required.

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2007-11-22  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* m4/valgrind.m4: New file.
	* configure.ac: Use it.

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2007-10-05  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* wrap/python/cgi/ltl2tgba.in: Adjust to newer versions of swig.

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	* src/misc/bddalloc.cc (bdd_allocator::initialize):
	Disable the default GC handler.  Reported by
	Kristin Yvonne Rozier <kyrozier@cs.rice.edu>.

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2007-07-26  Alexandre Duret-Lutz  <adl@gnu.org>

	* src/tgbatest/ltl2tgba.cc (main): Correctly destroy unobservable
	events.

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	* iface/gspn/ltlgspn.cc: New option -L.
	* iface/gspn/ssp.cc, iface/gspn/ssp.hh (gspn_ssp_interface)
	support for a new option "pushfront".

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	* NEWS, configure.in: Bump version to 0.4a.

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2007-07-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* NEWS, configure.in: Bump version to 0.4.
	* HACKING, INSTALL, doc/Doxyfile.in, lbtt/INSTALL: Update to newer
	tools.

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	* iface/gspn/ssp.cc (tgba_gspn_ssp_private_::~tgba_gspn_ssp_private_):
	Fix the declaration for GCC 4.1.2.
	* iface/gspn/gspn.cc (tgba_gspn_private_::~tgba_gspn_private_):
	Likewise.

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	* src/tgbatest/spotlbtt.test: Do not check -R1q -R1t -R2q -R2t.

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	* src/tgbatest/ltl2tgba.cc (main): Fix handling of -R1q -R1t -R2q -R2t.
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	Add support for -r8/-fr8.

	* src/tgbatest/spotlbtt.test: Also check -R1q -R1t -R2q -R2t.

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	* src/ltlvisit/reduce.cc (reduce): Repeat the reduction as
	long as the formula changes, it makes more sense when
	combining algorithm.  E.g. basic reductions can help language
	containment and vice-versa.

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	* src/tgbatest/spotlbtt.test: Disable formula rewriting during
	construction.

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	* src/ltltest/reduc.cc (main): More cases to test.
	* src/ltlvisit/basicreduce.cc (basic_reduce_visitor::visit):
	Simplify the formula again after FX->XF and GX->XG permutations.
	This is so that formulae like GFXXa become GFa and not just GFXa.
	* src/ltlvisit/contain.cc (reduce_tau03_visitor): Fix a typo
	in the rules for i|j or i&j, resulting in missing simplifications.

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	* src/ltlvisit/contain.cc (reduce_tau03_visitor): Simplify the
	rules for "a U b" and "a R b", an implication check is enough.

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	* src/misc/bddalloc.cc (bdd_allocator::initialize): Call
	bdd_isrunning() and don't run bdd_init() if it has already been
	called.

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	* src/tgbaalgos/randomgraph.cc (random_graph): Fix the
	generation of the graph.  Some states had no successors or
	duplicate transitions because of that bug.

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	* HACKING: We need Bison 2.3.

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	* evtgbaparse/evtgbaparse.yy, ltlparse/ltlparse.yy,
	tgbaparse/tgbaparse.yy: Fix Bison warnings about unset $$.

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	* src/tgbaparse/Makefile.am (tgbaparse_HEADERS): Also
	install location.hh and position.hh, since we no longer share
	those of ltlvisit.
	* src/evtgbaparse/Makefile.am (evtgbaparse_HEADERS): Likewise.

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	* src/ltlparse/public.hh: Work around Bison 2.3 unique guards.

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	* src/evtgbaparse/public.hh: Work around Bison 2.3 unique guards.
	* src/ltlvisit/reduce.hh, src/ltlvisit/reduce.hh:
	Add Reduce_Containment_Checks and Reduce_Containment_Checks_Stronger
	flags, and call reduce_tau03.
	* src/ltlvisit/contain.hh (reduce_tau03): Make "stronger" the
	default.
	* src/ltlvisit/contain.cc: Style.
	* src/ltltest/reduc.cc: Simplify using the reduce() interface
	instead of reduce_tau03.
	* src/tgbatest/ltl2tgba.cc: Likewise.  Add -fr5, -fr6, and -fr7
	options.
	* src/tgbatest/spotlbtt.test: Remove cases using "-c", since its
	current implementation is not always correct (and apparently
	reduces less than -fr7).

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	* src/evtgbatest/evtgbaparse.yy, src/evtgbaparse/evtgbascan.ll,
	src/evtgbaparse/parsedecl.hh, src/evtgbaparse/public.hh,
	src/ltlparse/fmterror.cc, src/ltlparse/ltlparse.yy,
	src/ltlparse/ltlscan.ll, src/ltlparse/parsedecl.hh,
	src/ltlparse/public.hh, src/tgbaparse/parsedecl.hh,
	src/tgbaparse/public.hh, src/tgbaparse/tgbaparse.yy,
	src/tgbaparse/tgbascan.ll: Adjust for Bison 2.3.  Use %name-prefix
	instead of the "#define yy ... " kludge.

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	* src/ltlvisit/contain.hh, src/ltlvisit/contain.cc: Adjust to only
	check containment on demand.

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	* src/ltlvisit/contain.hh, src/ltlvisit/contain.cc (reduce_tau03):
	New function, performing LTL reduction a la tauriainen.03.a83.
	* src/ltltest/equals.cc, src/ltltest/reduc.cc: Add support for
	the new reduction.
	* src/ltltest/reduc.test: Cut the test in half, and additionally
	test the new reduction.
	* src/ltltest/reduccmp.test: Run on the new reduction.
	* src/ltltest/Makefile.am: Adjust.
	* src/tgbatest/ltl2tgba.cc: Add new options to apply the reduction.
	* src/tgbatest/spotlbtt.test: Use them.

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	* src/tgba/tgbaproduct.cc: Fix computation of common acceptance
	conditions.

	* src/tgba/bdddict.cc, src/tgba/bdddict.cc (register_clone_acc):
	New function.
	* src/tgba/tgbaproduct.cc, src/tgba/tgbaproduct.hh: Use it to
	distinguish acceptance conditions that are identical in both
	operands.

	* src/tgbatest/explpro4.test: New file.
	* src/tgbatest/explpro2.test, src/tgbatest/Makefile.am: Adjust.

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	* src/tgbaalgos/ltl2tgba_fm.cc (language_containment_checker): Move ...
	* src/ltlvisit/contain.cc, src/ltlvisit/contain.hh
	(spot::ltl::language_containment_checker): ... in these new files.
	* src/ltlvisit/Makefile.am: Adjust.

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	* src/misc/memusage.cc, src/misc/memusage.hh: New files.
	* src/misc/Makefile.am: Add them.
	* src/tgbaalgos/gtec/gtec.cc,
	src/tgbaalgos/gtec/gtec.hh: Add a "vmsize" statistic.

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	* src/tgba/bdddict.cc, src/tgba/bdddict.hh (free_annonymous_list_of):
	Rename as ...
	(free_anonymous_list_of): ... this, and correct their update on
	release.  Also correct yesterday's the correction (ahem!).
	(dump): Improve verbosity.
	* src/misc/freelist.cc (free_list::remove, free_list::insert): Fix
	longstanding thinkos.
	(free_list::free_count): New function.

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	Merge this fix from proviso-branch:
	2006-05-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>
	* src/misc/bddalloc.cc (bdd_allocator::bdd_allocator): Count the
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	number of BDD variable after they have been allocated.  Otherwise
	the first bdd_dict() created was leaking BDD variable #1.
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	* src/tgba/tgbabddconcrete.hh, src/tgba/tgbaexplicit.hh,
	src/tgba/tgbaproduct.hh, src/tgba/tgbareduc.hh, src/tgba/tgbatba.hh:
	Remove superfluous class qualifiers worrying gcc 4.1.2.

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	* src/tgbaalgos/ltl2tgba_fm.hh, src/tgbaalgos/ltl2tgba_fm.cc
	(ltl_to_tgba_fm): Add a new option "containment_checks" to enable
	some language containment checks (via emptiness checks) during the
	translation.  This first attempt currently only use containment
	checks to merge states bisimulating each other.
	* src/tgbatest/ltl2tgba.cc: Bind this to option "-c".
	* src/tgbatest/spotlbtt.test: Check it.

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	* src/tgba/bdddict.cc (bdd_dict::unregister_variable): Correctly
	call release_n(), not remove() to repopulated the freelist of
	anonymous BDD variables.  New code I'm working on triggered an
	assertion inside remove(), but I'm surprised this bug hadn't
	manifested before !

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	* iface/gspn/common.hh, iface/gspn/common.cc, iface/gspn/gspn.cc,
	iface/gspn/ltlgspn.cc, iface/gspn/dottygspn.cc, iface/gspn/ssp.cc,
	iface/gspn/dottyssp.cc: s/exeption/exception/g.

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	* src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/gtec.hh:
	(couvreur99_check_shy_ssp): Add a onepass_ attribute to
	disable the "shyness", and do not increment pos before calling
	find_state since gspn's implementation uses it.
	* iface/gspn/ssp.cc: Enable "onepass_" for all "shy" variants,
	and also fix find_state for the case where onepass_ is
	disabled (but I do not yet know why the latter fix isn't enough).

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	* src/tgbaalgos/gtec/gtec.cc: Add a third level hash, to split
	each container into lists of states with identical formula states.

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	* iface/gspn/ltlgspn.cc, src/tgbaalgos/gtec/gtec.cc,
	src/tgbaalgos/gtec/gtec.hh: New option (-e6) to disable
	inclusion check in the stack.

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	* src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/gtec.hh:
	Count the number of removed components.

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	    Soheib Baarir  <Souheib.Baarir@lip6.fr>

	* iface/gspn/ssp.cc (couvreur99_check_shy_ssp::find_state,
	numbered_state_heap_ssp_semi): Implement a double hash_map using
	greatspn's new container() function.
	* iface/gspn/ssp.hh (gspn_ssp_interface): Add a doublehash option.
	* iface/gspn/ltlgspn.cc: Add option -1 to disable this optimization.

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	* src/tgbatest/ltl2tgba.cc: Pacify sanity.test.

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	* src/tgbaparse/public.hh (tgba_parse): Take two environments
	instead of one : one for the atomic propositions, and one
	for the acceptance conditions.  This way it's easy for
	the tools in iface/gspn/ to require some atomic proposition
	to be declared and allow any acceptance conditions (there is nothing
	to adjust in this files because of the default value of the argument).
	* src/tgbaparse/tgbaparse.yy: Adjust.
	* src/tgbatest/ltl2tgba.cc, src/tgbatest/readsave.cc,
	src/tgbatest/reductgba.cc, src/tgbatest/tgbaread.cc: Adjust calls.

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	* src/tgbaparse/tgbaparse.yy (acc_decl): Diagnose acceptance
	conditions rejected by the environment.

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	* iface/gspn/ltlgspn.cc (display_stats): New function.
	(main): Use it.
	* iface/gspn/ssp.cc: Add more counters for statistics.

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	* iface/gspn/ssp.cc (couvreur99_check_shy_ssp::find_state): Correctly
	update the emptiness statistics.

	* m4/gspnlib.m4: Typo.

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	* iface/gspn/ssp.cc: Pacify sanity.test.

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	* iface/gspn/ssp.cc (couvreur99_check_shy_ssp::find_state): Typo.
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2006-02-02  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gtec/gtec.cc (couvreur99_check_shy::check):
	Reorganize this function so that syntactically there is only one
	loop over the successors, and not two.  Call reintroduce the call
	to couvreur99_check_shy::state_index(), needed by SSP, and
	suppress that to index_and_insert introduced on 2004-12-29.  Also
	split the "group" option in two: "group" and "group2".  "group2"
	is the equivalent of the older "group", while the new "group" is
	weaker and faster.
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	(couvreur99_check_shy::find_state): Change prototype as needed by
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	the algorithm.
	* src/tgbaalgos/gtec/gtec.hh: Adjust.
	* src/tgbaalgos/gtec/nsheap.hh, src/tgbaalgos/gtec/nsheap.cc
	(index_and_insert): Remove.
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	* iface/gspn/ssp.cc (couvreur99_check_shy_ssp::find_state): Adjust
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	to new prototype.
	* bench/emptchk/README, bench/emptchk/algorithms: Adjust references
	to group/group2.

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2006-01-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* NEWS, configure.ac: Bump version to 0.3a.

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2006-01-25  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* NEWS, README, configure.ac: Update for version 0.3.

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	* wrap/python/cgi/ltl2tgba.in: Fix degeneralisation and output of
	accepting runs.

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	* wrap/python/spot.i: Wrap spot::emptiness_check_instantiator.
	* wrap/python/cgi/ltl2tgba.in: Offers all 6 emptiness
	check algorithms, and a text box for options.

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	* src/tgbaalgos/ndfs_result.hxx (ndfs_result::construct_cycle):
	Initialize tmp to suppress a GCC 4.0.1 warning (seen on Darwin).

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	* src/tgbatest/defs.in (VALGRIND): Use --log-fd instead of
	--logfile-fd to please newer versions of Valgrind.
	* src/ltltest/defs.in, src/evtgbatest/defs.in: Likewise.

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	* src/ltlparse/ltlparse.yy (result): Do not assign to $$, it's useless.
	Suggested by Akim.

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	* src/tgbatest/randtgba.cc: New option -H.
	* src/tgbaalgos/emptiness_stats.hh (unsigned_statistics_copy): New
	class.

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	* src/tgbatest/randtgba.cc: New option -S.

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2005-09-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/lbtt.cc: Typo.

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	* src/tgbatest/randtgba.cc (default_algos): Test the "ordering"
	heuristic.

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	* src/tgbaalgos/tau03opt.cc: Include <vector>.
	(tau03_opt_search): Add option "ordering" (off by default).
	If enabled, initialize an explicit ordering for acceptance
	conditions into the new member "cond" (a vector of bdds).
	(project_acc): New helper function for projecting a set of
	acceptance conditions to a subset that maximizes the number
	of initial consecutive conditions covered by the set in the
	condition ordering.
	(dfs_blue): Implement the ordering heuristic.
	(dfs_red): Use a sentinel in condition_stack to avoid explicit
	checks for the stack's emptiness.
	Consider also the conditions in acc when checking for the
	completion of an accepting cycle.
	Fix the implementation of condition heuristic.
	Implement the ordering heuristic.
	Simplify the removal of elements from condition_stack (due to
	the way in which elements are pushed on the stack, there can
	be at most one element with a given depth in the stack at any
	one time).

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	* src/tgbaalgos/ndfs_result.hxx (ndfs_result::construct_prefix):
	Initialize tmp to suppress a GCC 4.0 warning.
	* src/ltltest/randltl.cc (main): Likewise with another variable.

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	* src/ltlast/visitor.hh (visitor, const_visitor): Add empty
	virtual destructors.
	* src/tgba/tgbabddfactory.hh (tgba_bdd_factory): Likewise.
	* src/misc/hash.hh: Use the std namespace only with GCC 3.0,
	not with all compiler versions with minor version 0.
	* src/tgba/tgbatba.cc (tgba_tba_proxy_succ_iterator): Fix
	friend declaration of ::spot::tgba_tba_proxy.

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	* src/tgbaalgos/magic.hh: \fixme is not a doxygen command.  Use \bug.

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	* README: Update lbtt references.

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	* iface/gspn/ssp.cc: Typo in comment.

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	* lbtt/: Merge lbtt 1.2.0.

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	* src/tgbaalgos/reductgba_sim_del.cc
	(parity_game_graph_delayed::get_relation): Disable for generalized
	automata, it's wrong.

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	* src/tgbaalgos/reductgba_sim_del.cc
	(parity_game_graph_delayed::nb_set_acc_cond): Simplify.

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	* sanity/style.test: Catch misuses of Sgi::.
	* tgba/tgbareduc.hh, tgbaalgos/reductgba_sim.cc,
	tgbaalgos/reductgba_sim.hh, tgbaalgos/reductgba_sim_del.cc: Fix them.

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	* src/ltlvisit/syntimpl.cc: Fix a typo.

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	* src/ltlvisit/syntimpl.cc: Fix detection of purely eventual formulae.

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	* src/tgbaalgos/ltl2tgba_fm.cc: Fix handling of fair_loop_approx.

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	* src/misc/hashfunc.hh (knuth32_hash): New function.
	* src/misc/hash.hh (ptr_hash): Use knuth32_hash.
	* src/tgba/tgbabddconcretefactory.hh (tgba_bdd_concrete_factory): Use
	ltl::formula_ptr_hash for acc_map_.

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	* src/tgbaalgos/ltl2tgba_fm.hh, src/tgbaalgos/ltl2tgba_fm.cc: Add
	the reduce_ltl argument.
	* src/tgbatest/ltl2tgba.cc: Add options -fr1, -fr2, -fr3, and -fr4.
	* src/tgbatest/spotlbtt.test, bench/ltl2tgba/algorithms: Test -fr4.
	* bench/ltl2tgba/parseout.pl: Suppress Perl warnings on disabled
	algorithms.

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	* bench/ltl2tgba/README: More instructions.
	* bench/Makefile.am (SUBDIRS): Add ltl2tgba.
	* README: Mention bench/ltl2tgba.

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	* bench/ltl2tgba/Makefile.am, bench/ltl2tgba/README,
	bench/ltl2tgba/algorithms, bench/ltl2tgba/big,
	bench/ltl2tgba/defs.in, bench/ltl2tgba/formulae.ltl,
	bench/ltl2tgba/known, bench/ltl2tgba/parseout.pl,
	bench/ltl2tgba/small: New files.
	* src/tgbatest/ltl2baw.pl: Move ...
	* bench/ltl2tgba/ltl2baw.in: ... here.
	* src/tgbatest/Makefile.am: Adjust.
	* configure.ac: Adjust.

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	* src/tgbatest/ltl2tgba.cc (main): Delete the reduced automaton
	before the degeneralized automaton.

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	* doc/Makefile.am (doc, $(srcdir)/stamp): Ignore rm's errors.

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2005-04-12  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* README: Typos.

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2005-04-09  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* NEWS, configure.ac: Bump version to 0.2a.

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	* NEWS, configure.ac: Bump version to 0.2.

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	* bench/emptchk/README: Mention
	http://spot.lip6.fr/wiki/EmptinessCheckOptions for the syntax.

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	* src/tgbaparse/tgbaparse.yy (acc_list): Do not explicitly delete
	an undeclared acceptance condition.
	* src/tgbaalgos/save.cc (print_acc): Unquote atomic propositions.

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	* bench/emptchk/Makefile.am: Create reduced versions of the graphs.
	* bench/emptchk/pml2tgba.pl: Add option -r.
	* bench/emptchk/pml-clserv.sh, bench/emptchk/pml-eeaean.sh:
	Also run on reduced graphs (this is fast).
	* bench/emptchk/README: Adjust.

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	* src/ltlvisit/length.cc (length_visitor): Rewrite using
	postfix_visitor.

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	* src/tgbaalgos/tau03opt.cc (tau03_opt_search): Add options "weights"
	and "redweights" (on by default).

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	* src/tgbaalgos/tau03opt.cc (tau03_opt_search): Do not
	account for the size of condition_stack.

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	* src/sanity/style.test: Catch occurrences of "accepting condition".
	* bench/emptchk/ltl-human.sh, bench/emptchk/ltl-random.sh,
	src/sanity/style.test, src/tgba/bdddict.cc,
	src/tgba/succiterconcrete.hh, src/tgba/tgbabddcoredata.hh,
	src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh,
	src/tgbaalgos/gv04.cc, src/tgbaalgos/gv04.hh,
	src/tgbaalgos/magic.cc, src/tgbaalgos/magic.hh,
	src/tgbaalgos/se05.cc, src/tgbaalgos/se05.hh,
	src/tgbaalgos/tau03.cc, src/tgbaalgos/tau03.hh,
	src/tgbaalgos/tau03opt.cc, src/tgbaalgos/tau03opt.hh,
	src/tgbatest/dfs.test: Replace them by "acceptance condition".

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	* src/tgbaalgos/tau03opt.hh, src/tgbaalgos/tau03.hh: Include
	misc/optionmap.hh.

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	* bench/emptchk/README: Document the file `algorithms'.

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	* src/tgbaalgos/tau03opt.cc (tau03_opt_search): Implement the
	"condition heuristic".  Suggested by Heikki Tauriainen.
	* src/tgbatest/randtgba.cc: Test it.

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	* src/tgbatest/randtgba.cc: Remplace the -O option by -A, reading
	all algorithms from a file.  Use the emptiness_check_instantiator
	syntax as name in the output.
	* bench/emptchk/defs.in: DEfine ALGORITHMS here.
	* bench/emptchk/ltl-human.sh, bench/emptchk/ltl-random.sh,
	bench/emptchk/pml-clserv.sh, bench/emptchk/pml-clserv.sh: Use
	$ALGORITHMS.
	* src/misc/timer.cc: Truncate long keys in display.

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	* src/tgbatest/ltl2tgba.cc: Simplify using
	emptiness_check_instantiator.
	* src/tgba/tgba.cc, src/tgba/tgba.hh
	(tgba::number_of_acceptance_conditions): Return an unsigned.
	* bench/emptchk/algorithms, bench/emptchk/README,
	src/tgbatest/emptchk.test, src/tgbatest/emptchke.test: Adjust
	references to algorithms.
	* bench/emptchk/pml-clserv.sh, bench/emptchk/pml-eeaean.sh: Quote
	variables properly.

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	* src/tgbaalgos/emptiness.hh, src/tgbaalgos/emptiness.cc
	(emptiness_check_instantiator): New class.
	* src/misc/optionmap.hh (set (const option_map&)): New method.
	* src/tgbatest/randtgba.cc: Create every emptiness check via
	emptiness_check_instantiator.

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	* src/tgbaalgos/emptiness.hh,
	src/tgbaalgos/emptiness.cc (emptiness_check::safe): New method.
	* src/tgbaalgos/magic.cc, src/tgbaalgos/magic.hh,
	src/tgbaalgos/se05.hh, src/tgbaalgos/se05.cc: Implement it.
	* src/tgbatest/randtgba.cc: Simplify.

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	* src/tgbaalgos/magic.hh, src/tgbaalgos/magic.cc,
	src/tgbaalgos/se05.hh, src/tgbaalgos/se05.cc: Provide wrapper
	functions that read the hash-map size from a "bsh" option.
	* src/tgbatest/randtgba.cc: Simplify.

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	* src/misc/optionmap.hh, src/misc/optionmap.cc
	(option_map::parse_options): Rewrite.  Do not modify the input
	string, allow !foo as a shorthand for foo=0, and support K and
	M suffixes for values.
	* src/tgbatest/randtgba.cc (cons_emptiness_check): Simplify.
	* wrap/python/spot.i: Process optionmap.hh.
	* wrap/python/tests/optionmap.py: New file.
	* wrap/python/tests/Makefile.am (TESTS): Add it.

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	* src/misc/optionmap.cc, src/misc/optionmap.hh (option_map::get,
	option_map::set): Handle default values.
	(anonymous::to_int): Do not print anything.
	* src/tgbaalgos/gv04.cc, src/tgbaalgos/gv04.hh,
	src/tgbaalgos/tau03.cc, src/tgbaalgos/tau03.hh,
	src/tgbaalgos/tau03opt.cc, src/tgbaalgos/tau03opt.hh,
	src/tgbaalgos/ce.cc, src/tgbaalgos/ce.hh: Take an option_map in
	the constructor.
	* src/tgbaalgos/gtec.cc, src/tgbaalgos/gtec.hh: Likewise.  Handle
	the "poprem", "group", and "shy" options via the option_map.
	Supply a couvreur99() wrapper to the shy/non-shy variant.
	* src/tgbatest/ltl2tgba.cc, src/tgbatest/randtgba.cc,
	iface/gspn/ssp.cc: Adjust.

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	* src/tgbatest/randtgba.cc: Factorize more code using the
	unsigned_statistics interface.
	* bench/emptchk/README: Adjust description of output.

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	* src/sanity/style.test: Strip all strings before checking the
	file, so that strings are not checked for our C++ style.
	Reported by Denis (with a chainsaw).

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	* src/misc/optionmap.cc, src/misc/optionmap.hh: Typo (Hummm).

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	* src/misc/optionmap.cc, src/misc/optionmap.hh (option_map): New class.
	* src/misc/Makefile.am: Add it.
	* src/tgbaalgos/emptiness.cc, src/tgbaalgos/emptiness.hh: Add option
	facilities to the classes emptiness_check and emptiness_result
	* src/tgbaalgos/magic.cc, src/tgbaalgos/magic.hh,
	src/tgbaalgos/se05.cc, src/tgbaalgos/se05.hh: Compute optionnaly
	accepting runs from stack.
	* src/tgbatest/randtgba.cc: Make this option public.

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	* src/misc/ltstr.hh: Include <functional>

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	* src/tgbatest/randtgba.cc (stat_collector): New class, replacing...
	(ec_stat, acss_stat, ars_stat, print_ec_stats, print_acss_stats,
	print_ars_stats): ... these.
	* tgbaalgos/emptiness_stats.hh (unsigned_statistics): Make the
	map public.

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	* src/tgbaalgos/emptiness_stats.hh (unsigned_statistics::stats_map_):
	Use char_ptr_less_than.

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	* src/misc/ltstr.hh: New file.
	* src/misc/Makefile.am (misc_HEADERS): Add it.

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	* src/tgbaalgos/emptiness_stats.hh (unsigned_statistics::stats_map_):
	Use char* for keys, not std::string.

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	* tgbaalgos/emptiness_stats.hh (unsigned_statistics): New base
	class for ec_statistics and ars_statistics.
	(acss_statistics): Inherit from ars_statistics.
	* tgbaalgos/emptiness.cc, tgbaalgos/emptiness.hh:
	(emptiness_check::statistics, emptiness_check_result::statistics):
	New methods.
	* tgbatest/randtgba.cc: Adjust to use the above.
	* tgbaalgos/gv04.cc, tgbaalgos/ndfs_result.hxx, tgbaalgos/gtec/ce.cc,
	tgbaalgos/gtec/ce.hh: Do not inherit from ars_statistics if
	acss_statistics is used.

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	* src/tgbaalgos/gtec/gtec.hh (couvreur99_check): Add pseudo code.

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	* src/tgbaalgos/randomgraph.cc (random_graph): Make sure n > 0.
	* src/tgbatest/randtgba.cc: Check the range of all arguments.

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	* bench/emptchk/models/eeaean1.pml: New file, from schwoon.05.tacas.
	* bench/emptchk/Makefile.am: Distribute models/eeaean1.pml
	and build models/eeaean1.tgba.
	* bench/emptchk/pml-eeaean.sh: Check models/eeaean1.pml.
	* bench/emptchk/README: Adjust.
	* bench/emptchk/defs.in (RANDTGBA, LTL2TGBA): These tools are in
	the build tree, not the source tree...

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	These tests are huge, and are obsoleted by randtgba-based checks,
	and by bench/emptchk/.
	* src/tgbatest/tba_samples_from_spin.test: Delete.
	* src/tgbatest/tba_samples_from_spin/: Delete.
	* src/tgbatest/Makefile.am: Adjust.

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2005-02-01  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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	* src/evtgbaparse/evtgbaparse.yy, src/evtgbaparse/evtgbascan.ll,
	src/evtgbaparse/fmterror.cc, src/evtgbaparse/parsedecl.hh,
	src/evtgbaparse/public.hh, src/evtgbatest/product.cc,
	src/evtgbatest/readsave.cc, src/ltlparse/fmterror.cc,
	src/ltlparse/ltlparse.yy, src/ltlparse/parsedecl.hh,
	src/ltlparse/public.hh, src/tgbaparse/parsedecl.hh,
	src/tgbaparse/public.hh, src/tgbaparse/tgbaparse.yy: Update
	to Bison 2.0.

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	* bench/emptchk/pml2tgba.pl (usage): Correct description.  From Denis.

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	* bench/emptchk/README: Timing info from Denis.

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	* src/tgbatest/randtgba.cc (main): Skip empty lines.
	(syntax): Categorize options.

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2005-01-31  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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