* 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.
* 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.
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/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/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/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.
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.
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.
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: Call scc_filter() instead of
prune_scc().
* src/tgbatest/scc.test: Add two more tests that failed with
prune_scc().
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.
* 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.
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.
* bench/ltl2tgba/algorithms: Use -l for all LaCIM invocations.
* src/tgbatest/dupexp.test, src/tgbatest/emptchk.test,
src/tgbatest/spotlbtt.test: Likewise.
* 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.
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.
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.
* 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.
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.
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.
