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2010-02-01  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* NEWS, configure.ac: Bump version to 0.5a.

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2010-02-01  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Release Spot 0.5.

	* NEWS, configure.in: Bump version to 0.5.

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2010-01-31  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* doc/Makefile.am ($(srcdir)/stamp): Do not depend on dot
	explicitly, otherwise the documentation is always built and
	distcheck fails.

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2010-01-31  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	More Doxygen fixes.

	* src/sabaalgos/sabareachiter.hh (process_link): Document argument SI.
	* src/eltlparse/public.hh (format_parse_errors): Remove the
	non-existing eltl_string argument from the description.
	(parse_file): Fix name of parameters in documentation.

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2010-01-31  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Build doxygen pictures with libgd to reduce their size.

	Doxygen only knows how to call dot with -Tpng, while using
	-Tpng:gd produces pictures that are 10 times smaller.  Use a
	simple wrapper around dot to simplify this.

	* doc/dot.in: New file, that wrap the system's dot and replace
	-Tpng by -Tpng:gd.
	* doc/Makefile.am ($(srcdir)/stamp): Depend on dot.
	* doc/Doxyfile.in: Update to 1.6.2.
	(DOT_PATH): Set to @srcdir@ to use doc/dot instead of the
	system's dot.
	* configure.ac: Find the absolute path of dot, and generate
	the doc/dot script.

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2010-01-31  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	More Doxygen fixes.

	* src/tgba/tgbakvcomplement.hh: Use \verbatim around the bibtex
	entry.
	* src/saba/sabacomplementtgba.hh: Use latin1.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* bench/split-product/Makefile.am (nodist_noinst_DATA): Do not
	depend on files that cannot be built.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Replace spot::ltl_file by a rewritten spot::ltl::ltl_file.

	* src/tgba/tgbafromfile.cc, src/tgba/tgbafromfile.hh: Delete these
	files.
	* src/tgba/Makefile.am: Remove them.
	* src/ltl/ltlparse/ltlfile.hh, src/ltl/ltlparse/ltlfile.cc: New
	files.
	* src/ltl/ltlparse/Makefile.am: Add them.
	* bench/scc-stats/stats.cc, bench/split-product/cutscc.cc: Rewrite
	using the new class.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Check for missing Copyright blurbs, and add them.

	* src/sanity/style.test: Check for missing Copyrights blurbs.
	* src/sanity/Makefile.am: Run style.test before includes.test.
	* iface/gspn/dcswave.test, iface/gspn/dcswaveeltl.test,
	iface/gspn/dcswavefm.test, iface/gspn/dcswaveltl.test,
	iface/gspn/simple.test, iface/gspn/udcsefm.test,
	iface/gspn/udcseltl.test, iface/gspn/udcsfm.test,
	iface/gspn/udcsltl.test, iface/nips/nipstest/dotty.test,
	iface/nips/nipstest/emptiness.test, src/eltltest/acc.test,
	src/eltltest/nfa.test, src/saba/sabacomplementtgba.cc,
	src/sabatest/sabacomplementtgba.cc, src/tgbatest/eltl2tgba.test,
	src/tgbatest/taatgba.test: Add missing Copyright blurb.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* NEWS: More text.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Touch up some doxygen comments and copyrights.

	* eltlparse/public.hh, saba/saba.hh, tgba/tgbakvcomplement.hh,
	tgba/tgbasafracomplement.hh, tgbaalgos/eltl2tgba_lacim.cc,
	tgbaalgos/eltl2tgba_lacim.hh, tgbaalgos/ltl2taa.hh: Comment
	changes.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Add SCC pruning options to the CGI script.

	* wrap/python/cgi-bin/ltl2tgba.in: Add options to symbolically
	prune unaccepting SCCs in LaCIM, and explicitely pruns unaccepting
	SCCs in all algorithms.
	* src/tgbaalgos/reductgba_sim.hh: Conceal most of the file to
	SWIG.
	* wrap/python/spot.i: Include reductgba_sim.hh.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/evtgbatest/ltl2evtgba.test: Replace * by &.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Make it possible to use the cgi script without installing a web
	server.

	* wrap/python/cgi-bin/ltl2tgba.in: Starts a web server if the
	script is not called as a CGI.  Arrange to load libraries from
	the build directory.  Create the spotimg/ if needed when run as
	a web server.
	* wrap/python/cgi-bin/Makefile.am: Adjust build rule and clean
	the spotimg directory.
	* wrap/python/cgi-bin/README, NEWS: Update.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	More * -> & replacements.

	* src/ltltest/parse.test, src/ltltest/syntimpl.test: Replace * by &.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Remove the theoretically bogus "containment" option of ltl2tgba_fm.

	* src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_fm.hh:
	Remove the containment option.
	* src/tgbafromfile.cc, src/tgbafromfile.hh: Remove the
	containment_ member.
	* src/tgbatest/ltl2tgba.cc (syntax): Remove -c option for
	FM algorithm, use it exclusively for TAA.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgba/tgbasafracomplement.hh: Add missing copyright and
	fix some comments.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Rename tgba_complement as tgba_kv_complement.

	* src/tgba/tgbacomplement.hh, src/tgba/tgbacomplement.cc: Rename
	as...
	* src/tgba/tgbakvcomplement.hh, src/tgba/tgbakvcomplement.cc:
	... these. It makes more sense since we also have
	tgba_safra_complement.
	* src/tgba/Makefile.am, src/tgbatest/complement.cc, NEWS: Adjust.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Do not recognize "*" as "and".  This leaves room for an
	implementation of rational operators in a future version.

	* src/ltlparse/ltlscan.ll: Do not recognize "*".
	* wrap/python/cgi-bin/ltl2tgba.in: Undocument it.
	* NEWS: Mention this.
	* src/tgbatest/kv.test, src/tgbatest/ltl2tgba.test,
	src/tgbatest/reductgba.test: Replace "*" by "&".

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Make Couvreur/FM the default translation.

	* src/tgbatest/ltl2tgba.cc (syntax, main): Do it.
	* NEWS: Mention it.
	* src/tgbatest/emptchk.test: Add missing -l.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Overhaul LaCIM's ELTL options.

	* src/tgbatest/ltl2tgba.cc (syntax, main): Introduce -le to select
	this algorithm and -lo to add the default LTL operators.  This
	replace the undocumented hack to add LTL operators when the
	formula with read for command-line, or the automaton was output
	for LBTT.
	* src/tgbatest/eltl2tgba.test, src/tgbatest/spotlbtt.test: Update
	call syntax.
	* NEWS: Mention -le, -lo, and -taa.

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2010-01-30  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Touch up -R3b handling.

	* src/tgbatest/ltl2tgba.cc (syntax): Move -R3b with the other
	LaCIM options.
	(main): Speak of "symbolic SCC pruning" instead of "deleting
	unaccepting SCC", and do that right after the translation, before
	degeneralization.  Also error out when -R3b is used on non
	symbolic automata.

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2010-01-29  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Update some text files for upcoming 0.5.

	* NEWS: Update for upcoming 0.5.
	* HACKING: Update Automake requirement.
	* README: Mention the mailing list.
	* bench/ltlcounter/README: More text.
	* configure.ac: Report bugs to spot@lrde.epita.fr.

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2010-01-29  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Rename wrap/python/cgi/ as wrap/python/cgi-bin/.

	* wrap/python/cgi/: Rename as ...
	* wrap/python/cgi-bin/: ... this.
	* configure.ac, spot/wrap/python/Makefile.am, README: Adjust.

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2010-01-29  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/gtec/gtec.hh: Fix copyright.

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2010-01-29  Felix Abecassis <felix.abecassis@lrde.epita.fr>

	* src/tgba/taatgba.cc, src/tgba/taatbga.hh: Fix a memory issue on
	Darwin.

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2010-01-25  Damien Lefortier <dam@lrde.epita.fr>

	* wrap/python/cgi/ltl2tgba.in, wrap/python/spot.i: Add a new
	translation algorithm: Tauriainen/TAA.

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2010-01-25  Damien Lefortier <dam@lrde.epita.fr>

	* wrap/python/cgi/ltl2tgba.in: Use the uuid Python module instead
	of the UNIQUE_ID environment variable to avoid being
	Apache-specific.

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2010-01-24  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Fix copyrights.

	* bench/Makefile.am, bench/gspn-ssp/Makefile.am,
	bench/gspn-ssp/defs.in, bench/scc-stats/Makefile.am,
	bench/split-product/Makefile.am, configure.ac,
	iface/Makefile.am, iface/gspn/Makefile.am, iface/gspn/ssp.hh,
	iface/nips/Makefile.am, iface/nips/common.cc,
	iface/nips/common.hh, iface/nips/dottynips.cc,
	iface/nips/nips.cc, iface/nips/nips.hh, src/Makefile.am,
	src/eltlparse/Makefile.am, src/eltlparse/eltlparse.yy,
	src/eltlparse/eltlscan.ll, src/eltlparse/fmterror.cc,
	src/eltlparse/parsedecl.hh, src/eltltest/Makefile.am,
	src/eltltest/defs.in, src/eltltest/nfa.cc, src/evtgba/evtgba.hh,
	src/evtgba/product.cc, src/evtgba/product.hh,
	src/evtgbaalgos/tgba2evtgba.cc, src/evtgbaparse/Makefile.am,
	src/evtgbaparse/evtgbaparse.yy, src/evtgbatest/defs.in,
	src/evtgbatest/explicit.test, src/evtgbatest/ltl2evtgba.cc,
	src/evtgbatest/ltl2evtgba.test, src/evtgbatest/product.cc,
	src/evtgbatest/product.test, src/evtgbatest/readsave.cc,
	src/evtgbatest/readsave.test, src/ltlast/atomic_prop.cc,
	src/ltlast/atomic_prop.hh, src/ltlast/binop.cc,
	src/ltlast/binop.hh, src/ltlast/constant.cc,
	src/ltlast/constant.hh, src/ltlast/formula.cc,
	src/ltlast/formula.hh, src/ltlast/formula_tree.cc,
	src/ltlast/formula_tree.hh, src/ltlast/multop.cc,
	src/ltlast/multop.hh, src/ltlast/nfa.cc, src/ltlast/nfa.hh,
	src/ltlast/unop.cc, src/ltlast/unop.hh, src/ltlenv/declenv.cc,
	src/ltlenv/declenv.hh, src/ltlenv/environment.hh,
	src/ltlparse/Makefile.am, src/ltlparse/ltlparse.yy,
	src/ltltest/Makefile.am, src/ltltest/defs.in,
	src/ltltest/equals.cc, src/ltltest/equals.test,
	src/ltltest/lunabbrev.test, src/ltltest/nenoform.test,
	src/ltltest/parse.test, src/ltltest/parseerr.test,
	src/ltltest/randltl.cc, src/ltltest/readltl.cc,
	src/ltltest/reduccmp.test, src/ltltest/syntimpl.cc,
	src/ltltest/syntimpl.test, src/ltltest/tostring.cc,
	src/ltltest/tostring.test, src/ltltest/tunabbrev.test,
	src/ltltest/tunenoform.test, src/ltlvisit/basicreduce.cc,
	src/ltlvisit/clone.cc, src/ltlvisit/clone.hh,
	src/ltlvisit/contain.cc, src/ltlvisit/destroy.cc,
	src/ltlvisit/destroy.hh, src/ltlvisit/lunabbrev.cc,
	src/ltlvisit/nenoform.cc, src/ltlvisit/randomltl.cc,
	src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
	src/ltlvisit/tostring.cc, src/misc/bddalloc.cc,
	src/misc/bddop.cc, src/misc/bddop.hh, src/misc/freelist.hh,
	src/misc/hash.hh, src/misc/minato.cc, src/misc/minato.hh,
	src/misc/optionmap.cc, src/misc/timer.cc, src/misc/timer.hh,
	src/saba/Makefile.am, src/saba/explicitstateconjunction.cc,
	src/saba/explicitstateconjunction.hh, src/saba/saba.cc,
	src/saba/saba.hh, src/saba/sabacomplementtgba.cc,
	src/saba/sabacomplementtgba.hh, src/saba/sabastate.hh,
	src/saba/sabasucciter.hh, src/sabaalgos/Makefile.am,
	src/sabaalgos/sabadotty.cc, src/sabaalgos/sabadotty.hh,
	src/sabaalgos/sabareachiter.cc, src/sabaalgos/sabareachiter.hh,
	src/sabatest/Makefile.am, src/sabatest/defs.in,
	src/sanity/Makefile.am, src/tgba/Makefile.am,
	src/tgba/bdddict.cc, src/tgba/bddprint.cc,
	src/tgba/formula2bdd.cc, src/tgba/state.hh,
	src/tgba/succiterconcrete.cc, src/tgba/taatgba.hh,
	src/tgba/tgba.hh, src/tgba/tgbabddconcretefactory.cc,
	src/tgba/tgbabddconcretefactory.hh, src/tgba/tgbacomplement.cc,
	src/tgba/tgbacomplement.hh, src/tgba/tgbaexplicit.cc,
	src/tgba/tgbaexplicit.hh, src/tgba/tgbaproduct.cc,
	src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh,
	src/tgba/tgbasafracomplement.cc, src/tgba/tgbasgba.cc,
	src/tgba/tgbasgba.hh, src/tgba/tgbaunion.cc,
	src/tgba/tgbaunion.hh, src/tgbaalgos/dupexp.cc,
	src/tgbaalgos/eltl2tgba_lacim.cc,
	src/tgbaalgos/eltl2tgba_lacim.hh, src/tgbaalgos/emptiness.cc,
	src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/ltl2taa.cc,
	src/tgbaalgos/ltl2taa.hh, src/tgbaalgos/ltl2tgba_lacim.cc,
	src/tgbaalgos/neverclaim.cc, src/tgbaalgos/neverclaim.hh,
	src/tgbaalgos/powerset.cc, src/tgbaalgos/reachiter.cc,
	src/tgbaalgos/reachiter.hh, src/tgbaalgos/reductgba_sim.cc,
	src/tgbaalgos/reductgba_sim.hh,
	src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/stats.cc,
	src/tgbaalgos/stats.hh, src/tgbaparse/Makefile.am,
	src/tgbaparse/tgbaparse.yy, src/tgbatest/Makefile.am,
	src/tgbatest/bddprod.test, src/tgbatest/complementation.cc,
	src/tgbatest/complementation.test, src/tgbatest/defs.in,
	src/tgbatest/dfs.test, src/tgbatest/dupexp.test,
	src/tgbatest/explicit.cc, src/tgbatest/explicit.test,
	src/tgbatest/explpro3.test, src/tgbatest/explpro4.test,
	src/tgbatest/explprod.cc, src/tgbatest/explprod.test,
	src/tgbatest/ltl2neverclaim.test, src/tgbatest/ltl2tgba.cc,
	src/tgbatest/ltl2tgba.test, src/tgbatest/ltlprod.cc,
	src/tgbatest/ltlprod.test, src/tgbatest/mixprod.cc,
	src/tgbatest/mixprod.test, src/tgbatest/powerset.cc,
	src/tgbatest/readsave.cc, src/tgbatest/readsave.test,
	src/tgbatest/reduccmp.test, src/tgbatest/reductgba.cc,
	src/tgbatest/reductgba.test, src/tgbatest/taatgba.cc,
	src/tgbatest/tgbaread.cc, src/tgbatest/tgbaread.test,
	src/tgbatest/tripprod.cc, src/tgbatest/tripprod.test,
	wrap/python/cgi/ltl2tgba.in, wrap/python/tests/ltl2tgba.py,
	wrap/python/tests/ltlparse.py, wrap/python/tests/ltlsimple.py:
	Fix copyrights.

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2010-01-24  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc: More comments.

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2010-01-24  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

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	Check that all directories are documented.

	* src/sanity/readme.test: For each AC_OUTPUT Makefile, check that
	the directory is documented in README.  Also skip non distributed
	directories in readme.test.
	* README: Fit on 80 columns.

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	* README: Typo.

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2010-01-24  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/sanity/Makefile.am (EXTRA_DIST): Distribute readme.test.

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2010-01-24  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* README: Add descriptions for subdirectories of bench/, src/sanity,
	and src/kripke.

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2010-01-24  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/sanity/readme.test: A script to check whether all the
	directories referenced in README exist.
	* src/sanity/Makefile.am: Adjust to call `readme.test' when make
	check is invoked.

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2010-01-24  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Update the README.

	* README: Reference src/saba/, src/sabaalgos/, src/sabatest/,
	iface/nips/, iface/nips/nipstest/ and iface/nips/nips_vm/.

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2010-01-22  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Turn parse_error_list into an opaque type for Swig.  This
	kills a memory leak warning from swig/python.

	* src/ltlparse/public.hh (parse_error_list): Declare
	as an empty struct for Swig.
	* wrap/python/tests/ltlparse.py: Fix copyright.

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2010-01-22  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix the computation of the length of multops.

	* src/ltlvisit/length.cc (visit(multop*)): New function. "a & b &
	c" has length 5, not 4, even though it is stored as And(a,b,c).
	This caused reduc.test to fail on some formulae.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Please the style checks...

	* src/tgbaalgos/randomgraph.cc: Fix the copyright and make it fit
	on 80 columns.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/ltltest/reduc.cc (main): Fix harmless memory leak introduced
	today.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix taa_tgba_formula's destructor.

	* src/tgba/taatgba.cc (taa_tgba_formula::~taa_tgba_formula):
	Really destroy all formulae, not only half of them.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/randtgba.cc: Do not include <string> twice.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Speedup reduc.test by not spawning one process per formula.

	* src/ltltest/reduc.cc: Add an option -f to read a lost of
	formulae from a file.  Running a process for each formula was
	too slow.  Also add an option -h to hide reduced formulae.
	* src/ltltest/reduc.test: Simplify accordingly.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Move the last test from emptchk.test to emptchke.test.

	* src/tgbatest/emptchk.test: Move the newly added test ...
	* src/tgbatest/emptchke.test: ... here, with other explicit test.
	Also test more algorithms.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix a memory leak in Cou99 statistics.

	* src/tgbaalgos/gtec/ce.cc (couvreur99_check_result::acss_states):
	Delete the iterator after using it.
	* src/tgbatest/emptchkr.test: Run 'randtgba -z' with valgrind too.

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2010-01-21  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Fix a longstanding bug in our implementation of GV04.

	* src/tgbaalgos/gv04.cc (push): Fix the tracking of the accepting
	link.  This bug was discovered on a random generated graph with
	a complex accepting cycle.
	* src/tgbatest/emptchk.test: Add the troublesome graph as
	test case.

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2010-01-20  Damien Lefortier <dam@lrde.epita.fr>

	When iterating a hash_map, be careful not to delete i->first
	before doing ++i to avoid memory issues.

	* src/tgba/taatgba.cc, src/tgba/taatgba.hh,
	src/tgba/tgbaexplicit.cc, src/tgba/tgbaexplicit.hh: Fix them.

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2010-01-20  Damien Lefortier <dam@lrde.epita.fr>

	Minor fixes to compile with GCC 3.3

	* src/ltlast/automatop.cc, src/ltlast/automatop.hh: Rename nfa as
	get_nfa to avoid a name clash with the `nfa' class.
	* src/ltlvisit/clone.cc, src/ltlvisit/nenoform.cc,
	src/ltlvisit/tostring.cc, src/tgbaalgos/eltl2tgba_lacim.cc: Use
	get_nfa instead of nfa.
	* src/tgba/tgbasafracomplement.cc: Don't use a
	const_reverse_iterator.

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2010-01-20  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	Remove some non-determinism in random_graph()

	* src/tgbaalgos/randomgraph.cc (random_graph): Revert the part of
	the patch from 2007-02-06 which silently replaced the use of state
	index by state pointers.  Storing states pointer in this map cause
	some non-determinism because of the memory layout.  It was almost
	impossible to reproduce bugs found by tests based on randtgba.

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2010-01-19  Damien Lefortier <dam@lrde.epita.fr>
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	* src/tgbaalgos/ltl2taa.cc: Fix the previous patch.

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2010-01-18  Damien Lefortier <dam@lrde.epita.fr>

	* src/tgba/taatgba.cc, src/tgba/taatgba.hh: Fix memory issues
	occuring when labels are pointers.
	* src/tgbaalgos/ltl2taa.cc: Fix a bug.
	* src/tgbatest/ltl2tgba.cc: Fix a bug.

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2010-01-16  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	* src/saba/sabacomplementtgba.cc: Fix a bug.

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2010-01-16  Damien Lefortier <dam@lrde.epita.fr>

	Use taa_tgba_formula instead of taa_tgba_string in ltl_to_taa to
	speed up a little the translation.

	* src/tgbaalgos/ltl2taa.cc: Adjust.  Also fix a bug with
	acceptance conditions in all_n_tuples.
	* src/tgba/taatgba.cc, src/tgba/taatgba.hh: Adjust.

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2010-01-16  Damien Lefortier <dam@lrde.epita.fr>

	Introduce taa_tgba_labelled<label> so that we can build
	taa_tgba instances labelled by other objects than strings
	in the same way Alexandre did for tgba_explicit.

	* src/tgba/taatgba.cc, src/tgba/taatgba.hh: Split taa_tgba in two
	levels: taa_tgba with no label and taa_tgba_labelled templated by
	the type of the label.  Define taa_tgba_string (with the interface
	of the former taa_tgba class) and taa_tgba_formula for future use
	in ltl2taa.cc.
	* src/tgbaalgos/ltl2taa.cc, src/tgbatest/taatgba.cc: Adjust to use
	taa_tgba_string.

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2010-01-06  Damien Lefortier <dam@lrde.epita.fr>

	Fix a longstanding bug reported by Guillaume Sadegh.

	* src/eltlparse/eltlscan.ll: Fix a typo.

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2010-01-05  Damien Lefortier <dam@lrde.epita.fr>

	Merge eltl2tgba.cc into ltl2tgba.cc.

	* src/tgbatest/eltl2tgba.cc: Remove.
	* src/tgbatest/Makefile.am: Adjust.
	* src/tgbatest/ltl2tgba.cc: New option: -xltl to translate an
	extended LTL instead of an LTL, a feature previously offered by
	eltl2tgba.cc. Also: -R3b to use delete_unaccepting_scc.
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	* src/tgbatest/spotlbtt.test, src/tgbatest/eltl2tgba.test: Adjust.
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2009-11-10  Damien Lefortier <dam@lrde.epita.fr>

	* src/tgba/tgbabddcoredata.cc (delete_unaccepting_scc): Fix a bug.
	* src/tgbatest/spotlbtt.test: Use the above function with LaCIM
	for ELTL which greatly reduce the size of the automata!

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

	* src/misc/timer.hh (timer::timer): Initialize running...

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2009-12-09  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/Makefile.am (SUBDIRS): Fix missing ".", mistakenly removed
	by previous patch.

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2009-11-30  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	An algorithm to complement TGBA into SABA.

	* src/saba/sabacomplementtgba.hh,
	src/saba/sabacomplementtgba.cc: New.  The algorithm.
	* src/saba/Makefile.am: Adjust.
	* src/sabatest/sabacomplementtgba.cc, src/sabatest/Makefile.am,
	src/sabatest/defs.in: New.  Test the algorithm.
	* configure.ac, src/Makefile.am: Adjust to the new directory
	`sabatest'.

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2009-11-30  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Add a new type of automata: State-labeled Alternating Bchi
	Automata (SABA).

	* src/saba/saba.hh, src/saba/saba.cc, src/saba/sabastate.hh,
	src/saba/sabasucciter.hh: New.  Interface for
	SABA (State-labeled Alternating Bchi Automata).
	* src/saba/explicitstateconjunction.cc,
	src/saba/explicitstateconjunction.hh: New.  Default
	implementation for a conjunction of states.
	* src/saba/Makefile.am: New.
	* src/Makefile.am, configure.ac: Adjust.
	* src/sabaalgos/sabareachiter.cc,
	src/sabaalgos/sabareachiter.hh: New.  Iterate over all reachable
	states of a spot::saba.
	* src/sabaalgos/sabadotty.cc, src/sabaalgos/sabadotty.hh: New.
	Print reachable states in dot format.
	* src/sabaalgos/Makefile.am: New.

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2009-11-27  Guillaume Sadegh  <sadegh@lrde.epita.fr>

	Rename the class taa as taa_tgba.

	* src/tgba/taa.cc, src/tgba/taa.hh: Rename as ...
	* src/tgba/taatgba.cc, src/tgba/taatgba.hh: ... these, and
	rename the class taa as taa_tgba.
	* src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2taa.hh,
	src/tgbaalgos/Makefile.am: Adjust.
	* src/tgbatest/ltl2tgba.cc, src/tgbatest/Makefile.am: Adjust.
	* src/tgbatest/taa.test: Rename as ...
	* src/tgbatest/taatgba.test ... this.
	* src/tgbatest/taa.cc: Rename as ...
	* src/tgbatest/taatgba.cc ... this, and adjust.

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2009-11-26  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltl2tgba.cc (main): Fix typo to re-enable
	reductions by simulation.

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2009-11-26  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* m4/buddy.m4 (AX_CHECK_BUDDY): Check for bdd_satprefix, the
	latest function added to BuDDy.

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2009-11-25  Alexandre Duret-Lutz  <adl@lrde.epita.fr>

	* src/tgbatest/ltl2tgba.cc (main): Stop the SCC timer.  I mean
	really stop it!

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

	Detect running timers, and stop a timer in ltl2tgba.

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

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

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

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

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

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

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

	Specialize scc_filter when handling tgba_explicit_formula automata.

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

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

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

	Strip useless acceptance conditions in scc_filter().

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

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

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

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

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

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

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

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

	Replace prune_scc() by scc_filter().

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	Cleanup the help of ltl2tgba.

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

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

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

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

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

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

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

	Typo from a previous patch.

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

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

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

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

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

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

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

	Use tgba_explicit_formula instead of tgba_explicit_string in FM.

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

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

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

	Ease debugging of LTL formulae leaks.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	Make it possible to clone const formulae.

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

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

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

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

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

	Change the way references are counted to speedup cloning.

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

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


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

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

	Make it easier to debug reference counts in LTL nodes.

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

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

	Better types for instance maps.

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

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

	Add missing instance_count() in automatop and eltl2tgba.

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

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

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

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

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

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

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

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

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

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

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

	Fix spurious failure of style.test.

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

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

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

	Fix the help text of ltl2tgba.

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

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

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

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

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

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

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

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

	Escape labels in -KV output.

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

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

	* src/tgbaalgos/ltl2tgba_fm.cc: Typos.

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

	Improve ltl_to_taa.

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

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

	Fix make check in sanity.

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

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

	Minor fixes.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	A new complementation construction based on ranking.

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

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

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

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

	A wrapper around tgba to produce state-labeled automata.

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

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

	Rename files related to Safra complementation.

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

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

	Fix previous patch.

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

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

	Optimize previous patch.

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

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

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

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

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

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

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

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

	Fix some memory leaks.

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

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

	Fix a memory leak in reduce_tau03().

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

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

	Fix a memory leak in randltl.

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

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

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

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

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

	Fix path to libtool in test suites.

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

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

	Use Automake 1.11's parallel-tests feature.

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

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

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

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

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

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

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

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

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

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

	Implement spot::future_conditions_collector.

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

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

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

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

	Number states using negative values and SCCs using nonnegative
	values.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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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	* 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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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/.

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

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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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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.

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

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Alexandre Duret-Lutz's avatar
typo    
Alexandre Duret-Lutz committed
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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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2007-04-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>
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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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2007-04-19  Alexandre Duret-Lutz  <adl@src.lip6.fr>
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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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2007-04-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>
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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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2007-02-06  Alexandre Duret-Lutz  <adl@src.lip6.fr>
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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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2006-08-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* 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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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.

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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.

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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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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.

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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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