* 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.

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

today.

Kill a warning on Ubuntu.

* interactive.c (interactive_simulate): Explicitly ignore the
return of scanf to kill a warning.

Kill some warnings on Ubuntu.

* src/UserCommandReader.cc (UserCommandInterface): Explicitly
ignore the return code of system() to kill a warning.
* src/TestOperations.cc (generateBuchiAutomaton): Explicitly
ignore the return code of write() to kill a warning.

* src/bddio.c (bdd_load): Check the return value of fscanf() to
kill a warning.

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

* 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.

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

* 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.

* 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.

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.

* 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.

* 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.

occuring when labels are pointers.
* src/tgbaalgos/ltl2taa.cc: Fix a bug.
* src/tgbatest/ltl2tgba.cc: Fix a bug.

* src/translate.cc: exit(2) requires cstdlib.

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.

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.

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

* 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.
* src/tgbatest/spotlbtt.test: Adjust.

* src/tgbatest/spotlbtt.test: Use the above function with LaCIM
for ELTL which greatly reduce the size of the automata!

by previous patch.

Inline bdd_addref() and bdd_delref() to speedup BDD operations.

* src/kernel.c, src/kernel.h (bdd_addref, bdd_delref): Move these
functions and there associated global variables...
* src/bdd.c (bdd_error): ... and this function ...
* src/bdd.h (bdd_addref, bdd_delref, bdd_error): ...here so that
they can be inlined.

* 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'.

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 Büchi 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.

* 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.

reductions by simulation.

latest function added to BuDDy.

Fix generation of random formulae on 64bits systems.

* src/main.cc (testLoop): Generate random short ints between 0 and
SHRT_MAX, not between 0 and LONG_MAX.  On systems where long ints
are 64bits, LRAND(0,LONG_MAX) was returning a value with the lower
32 bits set to 0, and the latter truncation to short int always
yielded the value 0.  Consequently all generated formulae were
identical...

* src/Configuration.cc (registerAlgorithm): Do not complain about
a missing path for disabled algorithms.

really stop it!

* 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.

the same node twice when dealing with loops.

* 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.

Introduce bdd_satprefix, to speedup spot::minato().

* src/bdd.h (bdd_satprefix): New function.
* src/bddop.c (bdd_satprefix, bdd_sat_prefixrec): New functions.

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.