ChangeLog

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.

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.

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.

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.

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.

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.

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().

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().

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.

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.

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.

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.

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.

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.

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

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

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.

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.

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

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

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

	* src/tgba/tgbacomplement.cc: Stay on 80 columns.

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
	constants when translating to TGBA many LTL formulae from a
	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.

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.

2009-06-17  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

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''.

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.

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.

2009-06-09  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/tgba/tgbacomplement.cc, src/tgbatest/complementation.cc:
	Fix style.

2009-06-07  Guillaume Sadegh  <sadegh@lrde.epita.fr>

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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

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.

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

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

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

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

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

	* src/tgba/tgba.hh: Typos.

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

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

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'.

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.

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.

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.

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.

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().

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.

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

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

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

	* 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.

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.

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.

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.

2008-08-18  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

2008-08-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* 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.

2008-08-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

2008-08-07  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

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.

2008-06-11  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

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

2008-06-02  Guillaume SADEGH  <sadegh@lrde.epita.fr>

	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.

2008-06-03  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

2008-06-03  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	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/.

2008-06-02  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

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

2008-05-29  Guillaume SADEGH  <sadegh@lrde.epita.fr>

	* 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`.

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.

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.

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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.

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.

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.

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

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

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

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

2007-09-19  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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

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

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

2007-07-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

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.

2007-07-16  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2007-06-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2007-04-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

2007-04-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2007-04-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2007-04-19  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

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

2007-04-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2007-02-06  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-08-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* HACKING: We need Bison 2.3.

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

	* 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.

2006-08-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-08-16  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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).

2006-08-01  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2006-07-24  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-07-19  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

	* 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.

	* 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.

2006-07-18  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2006-07-14  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

	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
	number of BDD variable after they have been allocated.  Otherwise
	the first bdd_dict() created was leaking BDD variable #1.

	* 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.

2006-07-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

	* 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 !

2006-06-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2006-04-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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).

2006-02-15  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

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

2006-02-14  Alexandre Duret-Lutz  <adl@src.lip6.fr>
	    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.

2006-02-11  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-02-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

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

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

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

	* m4/gspnlib.m4: Typo.

2006-02-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-02-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/ssp.cc (couvreur99_check_shy_ssp::find_state): Typo.

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.
	(couvreur99_check_shy::find_state): Change prototype as needed by
	the algorithm.
	* src/tgbaalgos/gtec/gtec.hh: Adjust.
	* src/tgbaalgos/gtec/nsheap.hh, src/tgbaalgos/gtec/nsheap.cc
	(index_and_insert): Remove.
	* iface/gspn/ssp.cc (couvreur99_check_shy_ssp::find_state): Adjust
	to new prototype.
	* bench/emptchk/README, bench/emptchk/algorithms: Adjust references
	to group/group2.

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

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

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

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

2006-01-24  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-01-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2006-01-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2006-01-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2005-09-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

2005-09-27  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

	* src/tgbaalgos/lbtt.cc: Typo.

2005-09-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-09-20  Heikki Tauriainen  <heikki.tauriainen@tkk.fi>

	* 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).

2005-09-05  Heikki Tauriainen  <heikki.tauriainen@tkk.fi>

	* 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.

2005-09-05  Heikki Tauriainen  <heikki.tauriainen@tkk.fi>

	* 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.

2005-09-01  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-08-31  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* README: Update lbtt references.

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

	* lbtt/: Merge lbtt 1.2.0.

2005-06-06  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-05-25  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

	* 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.

2005-05-16  Denis Poitrenaud  <dp@src.lip6.fr>

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

2005-05-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-05-12  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-05-04  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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_.

	* 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.

2005-04-19  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-04-15  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2005-04-14  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-04-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

	* README: Typos.

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

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

2005-04-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

2005-04-06  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

	* 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.

2005-02-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-02-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

2005-02-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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".

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

2005-02-18  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

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

	* 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.

	* 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.

2005-02-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

	* 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.

	* 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.

	* 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.

2005-02-16  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

2005-02-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-02-07  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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).

2005-02-07  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

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

2005-02-07  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* 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.

2005-02-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

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

2005-02-04  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

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

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

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

2005-02-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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.

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

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

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

	* 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...

	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.

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

	* 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.

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

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

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

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

	* src/tgbatest/explicit.test, src/tgbatest/explpro2.test,
	src/tgbatest/explprod.test, src/tgbatest/tripprod.test,
	src/evtgbatest/explicit.test: Do not reorder the output.
	It's pointless since 2005-01-20.

	* configure.ac, NEWS: Bump version to 0.1a.

	* configure.ac, NEWS: Bump version to 0.1.

2005-01-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* bench/emptchk/Makefile.am (dist_noinst_SCRIPTS): Add pml-clserv.sh
	and pml-eeaean.sh.
	* bench/emptchk/ltl-human.sh: Typo in densities.
	Reported by Denis.

2005-01-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/mainpage.dox: More text, and a link to "Modules".

	* src/tgbatest/ltl2tgba.cc (main): Silence the "filename.tgba read"
	message if -0 is used.

	* bench/emptchk/formulae.ltl: New file.

	* src/tgbaalgos/gtec/gtec.hh (couvreur99_check): Document poprem.

	* bench/emptchk/README: Make clearer that spin is needed.

	* src/tgbatest/randtgba.cc (syntax): Missing std::endl.

2005-01-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>
	    Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* bench/Makefile.am, bench/emptchk/Makefile.am,
	bench/emptchk/README, bench/emptchk/algorithms,
	bench/emptchk/defs.in, bench/emptchk/ltl-human.sh,
	bench/emptchk/ltl-random.sh, bench/emptchk/pml-clserv.sh,
	bench/emptchk/pml-eeaean.sh, bench/emptchk/pml2tgba.pl,
	bench/emptchk/models/cl3serv1.pml,
	bench/emptchk/models/cl3serv3.pml,
	bench/emptchk/models/clserv.ltl, bench/emptchk/models/eeaean.ltl,
	bench/emptchk/models/eeaean2.pml: New files.
	* README: Adjust.
	* configure.ac: Output bench/Makefile and bench/emptchk/Makefile.
	Check for PERL, and define the NEVER conditional.
	* Makefile.am (SUBDIRS) [NEVER]: Add bench.


2005-01-28  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/emptiness_stats.hh: Make sure depth() >= 0.
	* src/tgbaalgos/gtec/gtec.hh (couvreur99_check, couvreur99_check_shy):
	Add the poprem option.
	* src/tgbaalgos/gtec/gtec.cc: Implement it.
	* src/tgbaalgos/gtec/sccstack.cc, src/tgbaalgos/gtec/sccstack.hh
	(scc_stack::rem, scc_stack::clear_rem,
	scc_stack::connected_component::rem): New.
	* src/tgbatest/ltl2tgba.cc, src/tgbatest/randtgba.cc: Add rem variants.

2005-01-28  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/dfs.test, src/tgbatest/emptchk.test,
	src/tgbatest/emptchke.test, src/tgbatest/ltl2tgba.cc,
	src/tgbatest/randtgba.cc, src/tgbatest/tba_samples_from_spin.test:
	Adjust names of emptiness check algorithms.

2005-01-27  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbaalgos/gtec/gtec.cc: Adjust statistics count to match
	how the algorithm will behave once remove_component() is revamped. From
	Alexandre.

2005-01-27  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gtec/ce.cc (couvreur99_check_result::accepting_cycle):
	More ref in comment.

2005-01-26  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gv04.cc, src/tgbaalgos/ndfs_result.hxx,
	src/tgbaalgos/gtec/ce.cc: Do not account for states that are
	computed but not visited by the BFS&DFS used to construct
	accepting runs.

2005-01-25  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/randtgba.cc: Complete performance measurements.

	* src/tgbatest/ltl2tgba.cc: Typo.

	* src/tgbaalgos/magic.hh: Correct pseudo-code.

2005-01-24  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/tau03opt.hh, src/tgbaalgos/se05.hh: Correct
	pseudo-code.  From Denis.

	* src/tgbaalgos/gtec/gtec.cc: Fake statistics count to match
	how the algorithm will behave once remove_component() is revamped.

	* src/tgbaalgos/emptiness_stats.hh (ars_statistics): Distinguish
	states visited to compute the prefix and those for the cycle.
	* src/tgbaalgos/gv04.cc, src/tgbaalgos/ndfs_result.hxx,
	src/tgbaalgos/gtec/ce.cc: Adjust.
	* src/tgbatest/randtgba.cc: Print both statistics.

2005-01-24  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/randtgba.cc, src/tgbatest/ltl2tgba.cc: Add options
	dedicated to display of stats.

2005-01-24  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/randtgba.cc: Some fixes from Denis for ratio stats.

2005-01-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlast/formula.hh (formula_ptr_less_than): Two
	formulae with the same hash key are not necessary equal!

	* src/ltlast/formula.hh (hash, dump, dump_, hash_key_): New members.
	(formula_ptr_less_than, formula_ptr_hash): New class.
	* src/ltlast/atomic_prop.cc, src/ltlast/binop.cc,
	src/ltlast/constant.cc, src/ltlast/formula.cc,
	src/ltlast/multop.cc, src/ltlast/unop.cc: Adjust to handle dump_.
	* src/ltlvisit/apcollect.cc, src/ltlvisit/apcollect.hh:
	Sort the set using formula_ptr_less_than.
	* src/ltlvisit/dump.cc: Simplify using ->dump().
	* src/tgbaalgos/ltl2tgba_fm.cc: Sort all maps to get deterministic
	results.

2005-01-18  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/tau03opt.hh (explicit_tau03_opt_search): Doco.

	* src/tgbaalgos/gtec/gtec.cc (couvreur99_check_shy::clear_todo,
	couvreur99_check_shy::check): Sum all successors in the
	todo stack AND all items on the stack.

2005-01-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/emptiness_stats.hh (ec_statistics::depth): New function.
	* src/tgbaalgos/gtec/gtec.cc (couvreur99_check_shy::clear_todo,
	couvreur99_check_shy::check): Count all successors in the
	todo stack rather than all items on the stack.

2005-01-13  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/randtgba.cc: Close the formula file and remove a trace.

2005-01-13  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/randtgba.cc: Add products with formulae issued of a file
	and more statistics.
	* src/tgbatest/readsave.test: Undo previous change.

2005-01-13  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/readsave.test: Fix parameter of randtgba call.

2005-01-12  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/randtgba.cc: Add products with randomized formulae and
	more statistics.

2005-01-11  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gv04.cc (result): Implement the acss_statistics,
	and ars_statistics interfaces.

2005-01-11  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/ltltest/randltl.cc: Typo.

2005-01-11  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbaparse/tgbaparse.yy: Accept automaton without state.

	* src/ltltest/randltl.cc: Typo.

2005-01-10  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbatest/randtgba.cc: Typo.

2005-01-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/ltl2tgba.cc: Typo.

	* src/tgbatest/randtgba.cc: Add option -P.

2005-01-10  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbaalgos/tau03.cc: Typo.
	* src/tgbatest/ltl2tgba.cc: Add option -b.

2005-01-07  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ndfs_result.hxx (ndfs_result, acss_interface):
	Conditionally inherit from acss_statistics.
	* src/tgbaalgos/magic.cc, src/tgbaalgos/se05.cc, src/tgbaalgos/tau03.cc,
	src/tgbaalgos/tau03opt.cc: Define Has_Size in all heaps.

2005-01-06  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/ltltest/randltl.cc: Include cassert.

	* src/tgbaalgos/ndfs_result.hxx: Implement the spot::acss_statistics
	interface.
	* src/tgbaalgos/magic.cc, src/tgbaalgos/se05.cc, src/tgbaalgos/tau03.cc,
	src/tgbaalgos/tau03opt.cc: Add to each heap class a method returning its
	size.

2005-01-06  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltltest/randltl.cc: Add options -r and -u.
	* src/ltltest/reduc.test: Use randltl -u, and run it through valgrind.

2005-01-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/randomltl.cc, src/ltlvisit/randomltl.hh: New files.
	* src/ltlvisit/Makefile.am (ltlvisit_HEADERS,
	libltlvisit_la_SOURCES): Distribute them.
	* src/ltltest/randltl.cc: New file.
	* src/ltltest/Makefile.am (LDADD): Link with ../libspot.la directly.
	(noinst_PROGRAMS, randltl_SOURCES): New.
	(EXTRA_DIST, CLEANFILES): The list of random formulae is now generated.
	* src/ltltest/formulae.txt: Delete.
	* src/ltltest/reduc.test: Use randltl to generate formulae.
	* src/ltlvisit/length.cc (length_visitor): Fix computation
	of the length of multops.
	* src/ltlvisit/length.hh (length): Document the length of multops.

2005-01-04  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/sanity/includes.test: Also check *.hxx files.
	* src/tgbaalgos/ndfs_result.hxx: Rename the include guard.

2005-01-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/Doxyfile.in (FILE_PATTERNS): Remove *.hxx.
	* src/sanity/80columns.test, src/sanity/style.test: Process *.hxx files.
	* src/tgbaalgos/ndfs_result.hh: Rename as ..
	* src/tgbaalgos/ndfs_result.hxx: ... this, so it does not get
	documented (and so Doxygen do not complain).
	* src/tgbaalgos/magic.cc, src/tgbaalgos/se05.cc, src/tgbaalgos/tau03.cc,
	src/tgbaalgos/tau03opt.cc: Adjust include.
	* src/tgbaalgos/Makefile.am: Rename ndfs_result.hh as ndfs_result.hxx
	and do not install it, this is a private header.

	* src/tgbaalgos/emptiness.hh: Declare Doxygen group
	emptiness_check_stats.
	* src/tgbaalgos/emptiness_stats.hh: Use it.

	* doc/Doxyfile.in: Update for Doxygen 1.4.0, set
	DOT_MULTI_TARGETS, and disable GROUP_GRAPH (it causes segfault).
	* src/tgbaparse/public.hh (format_tgba_parse_errors): Complete
	Doxygen comment.

	* src/tgbaalgos/emptiness_stats.hh (ars_statistics): New class.
	* src/tgbaalgos/ndfs_result.hh (ndfs_result): Inherit from
	ars_statistics.
	(ndfs_result::dfs): Call inc_ars_states().
	(ndfs_result::test_path, ndfs_result::min_path): Update ars_statistics.
	* tgbaalgos/gtec/ce.hh (couvreur99_check_result): Inherit
	from ars_statistics.
	* tgbaalgos/gtec/ce.cc (shortest_path,
	couvreur99_check_result::accepting_cycle::scc_bfs):
	Update ars_statistics.
	* src/tgbatest/randtgba.cc: Display statistics about accepting run
	search.

	* src/tgbaalgos/bfssteps.hh (bfs_steps::finalize): Document.

	* src/tgbaalgos/emptiness_stats.hh (accs_statistics): New class.
	* src/tgbaalgos/gtec/ce.cc, src/tgbaalgos/gtec/ce.hh
	(couvreur99_check_result): Inherit from acss_statistics.
	(couvreur99_check_result::acss_states): Implement it.
	* src/tgbatest/randtgba.cc: Display statistics about accepting cycle
	search space.

	* src/tgbaalgos/ndfs_result.hh (construct_prefix): Do not call
	erase() after splice(), splice() already removes the elements.

	* src/evtgba/evtgbaiter.hh, src/ltlast/formula.hh,
	src/ltlast/refformula.hh, src/ltlenv/defaultenv.hh,
	src/misc/bareword.hh, src/tgba/succiter.hh,
	src/tgba/tgbabddfactory.hh, src/tgba/tgbareduc.hh,
	src/tgbaalgos/dupexp.hh, src/tgbaalgos/emptiness_stats.hh,
	src/tgbaalgos/ltl2tgba_fm.hh, src/tgbaalgos/ltl2tgba_lacim.hh,
	src/tgbaalgos/reductgba_sim.hh, src/tgbaalgos/tau03opt.hh: Add
	or fix include guards.
	* src/sanity/includes.test: Check the presence of the include
	guard.

2004-12-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gtec/nsheap.hh, src/tgbaalgos/gtec/nsheap.cc
	(index_and_insert): New function.
	* src/tgbaalgos/gtec/gtec.cc (couvreur99_check_shy::check): Rewrite.
	(couvreur99_check_shy::clear_todo): New method.
	* src/tgbaalgos/gtec/gtec.hh (couvreur99_check_shy::todo_item): New
	struct.
	* iface/gspn/ssp.cc (numbered_state_heap_ssp_semi::index_and_insert):
	New method.

2004-12-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/Doxyfile.in (EXCLUDE_SYMLINKS): Set to YES, since we have no
	legitimate symlink in our source tree.  Requested by Akim Demaille.

2004-12-20  Denis Poitrenaud  <Denis.Poitrenaud@lip6.fr>

	* src/tgbaalgos/ndfs_result.hh: Rewrite the computation of accepting
	runs.
	* src/tgbaalgos/bfssteps.hh, src/tgbaalgos/bfssteps.cc: Add the method
	finalize witch compute (by default) the traversed path.
	* src/tgbaalgos/magic.cc, src/tgbaalgos/se05.cc: Fix a bug concerning
	the heap used for bit state hashing version and adjust the prototype of
	has_been_visited and pop_notify.
	* src/tgbaalgos/tau03.cc, src/tgbaalgos/tau03opt.cc: adjust the
	prototype of has_been_visited and pop_notify.

2004-12-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ndfs_result.hh: Include misc/hash.hh.

2004-12-16  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/reducerun.cc (reduce_run): Do not call erase() after
	splice(), splice() already removes the elements.
	* src/tgbaalgos/gtec/ce.cc (couvreur99_check_result::accepting_run):
	Likewise.

	* src/tgbatest/randtgba.cc: Add option -O, so we can profile each
	emptiness-check on its own.