* src/priv/accmap.hh, src/tgbaalgos/lbtt.cc, src/tgbaalgos/lbtt.hh,
src/tgbaparse/public.hh, src/tgbaparse/tgbaparse.yy,
src/tgbatest/ltl2tgba.cc, src/tgbatest/tgbaread.cc: Do not pass any
environment parameter to parse acceptance sets. This is not used
anymore since we moved to int-labeled acceptance sets.
This way we can easily parse a stream of HOAs intermixed with
neverclaims.
* src/hoaparse/hoaparse.yy, src/hoaparse/hoascan.ll: Add rules
for neverclaims, adjusted from src/neverparse/neverclaimparse.yy
and src/neverparse/neverclaimparse.ll.
* src/hoaparse/public.hh, NEWS: Update documentation.
* src/neverparse/: Remove this directory.
* README, configure.ac, src/Makefile.am: Adjust accordingly.
* src/tgbatest/ltl2tgba.cc, src/bin/ltlcross.cc: Use HOA
parser to read neverclaims.
* src/tgbatest/hoaparse.test, src/tgbatest/neverclaimread.test: Adjust.
* src/ltlenv/defaultenv.hh, src/ltlenv/defaultenv.cc (require): Return
an atomic_prop*, not a formula*.
* src/bin/randaut.cc, src/bin/randltl.cc, src/ltlvisit/apcollect.cc,
src/tgbatest/ltl2tgba.cc, src/tgbatest/randtgba.cc: Do not cast
the return of require().
* src/tgbaalgos/closure.cc, src/tgbaalgos/closure.hh:
Add closure function.
* src/tgbaalgos/stutterize.cc, src/tgbaalgos/stutterize.hh:
Add two implementations of "self-loopize" function.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgba/tgbasl.cc, src/tgba/tgbasl.hh: On-the-fly implementation of
self-loopize.
* src/tgba/Makefile.am: Add it.
* src/tgbatest/ltl2tgba.cc, src/tgbatest/stutter_invariant.test: Test
closure and sl.
* src/tgbatest/Makefile.am: Adjust.
* src/bin/ltlfilt.cc: Modify stutter-invariant option to use
automaton-based checking rather than syntactic-based checking.
* src/ltlvisit/remove_x.cc, src/ltlvisit/remove_x.hh:
Remove is_stutter_insensitive function.
* src/tgbaalgos/stutter_invariance.cc,
src/tgbaalgos/stutter_invariance.hh: Check if a formula is
stutter-invariant using closure and sl.
* wrap/python/spot.i: Add closure and sl bindings.
* bench/stutter/stutter_invariance_formulas.cc: Generate benchmarks from
given formulas.
* bench/stutter/stutter_invariance_randomgraph.cc: Generate benchmarks
from random automata.
* bench/stutter/Makefile.am: Add them.
* configure.ac: Add bench/stutter/Makefile.
* bench/Makefile.am: Add stutter subdirectory.
* README: Document bench/stutter directory.
* src/tgba/tgbagraph.hh, src/tgba/tgbagraph.cc: Add a copy constructor,
and some method to purge unreachable states.
* src/graph/graph.hh (defrag_states): Erase transition of removed
states.
* src/tgbaalgos/complete.cc, src/tgbaalgos/compsusp.cc,
src/tgbaalgos/dtgbacomp.cc, src/tgbaalgos/simulation.cc,
src/tgbatest/checkpsl.cc, src/tgbatest/emptchk.cc,
src/tgbatest/ltl2tgba.cc: Adjust to use make_tgba_digraph() instead
of tgba_dupexp_dfs() or tgba_dupexp_bfs().
* src/tgbaalgos/dupexp.cc, src/tgbaalgos/dupexp.hh: Use
make_tgba_digraph() when possible.
* src/tgbatest/det.test, src/tgbatest/sim.test: Adjust expected results.
This involves reimplementing some algorithms using tgba_digraph, and
implementing an explicit product that takes two tgba_digraphs and
produces a tgba_digraph.
* src/tgbaalgos/product.cc, src/tgbaalgos/product.hh: New files.
* src/tgbaalgos/Makefile.am: Adjust.
* src/bin/ltlcross.cc, src/tgba/tgba.cc, src/tgba/tgba.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasafracomplement.hh,
src/tgbaalgos/cycles.cc, src/tgbaalgos/cycles.hh,
src/tgbaalgos/degen.cc, src/tgbaalgos/degen.hh,
src/tgbaalgos/isweakscc.cc, src/tgbaalgos/isweakscc.hh,
src/tgbaalgos/minimize.cc, src/tgbaalgos/minimize.hh,
src/tgbaalgos/powerset.cc, src/tgbaalgos/powerset.hh,
src/tgbaalgos/safety.cc, src/tgbaalgos/safety.hh,
src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh,
src/tgbatest/complementation.cc, src/tgbatest/emptchk.cc,
src/tgbatest/ltl2ta.test, src/tgbatest/ltl2tgba.cc,
src/tgbatest/randtgba.cc: Update to use scc_info and/or tgba_digraph.
This is a huge patch, that took over a month to complete. The bit sets
are currently restricted to what 'unsigned can store', but it should be
easy to extend it to 'uint64_t' should we need it.
* NEWS: Update.
* src/tgba/acc.hh: New file.
* src/tgbatest/acc.cc, src/tgbatest/acc.test: Test it.
* src/tgba/tgbakvcomplement.cc, src/tgba/tgbakvcomplement.hh,
src/tgba/tgbasgba.cc, src/tgba/tgbasgba.hh: Delete. The KV
complementation is too slow to be used in practice, and I somehow broke
it during the conversion to bitsets. The tgba->sgba conversion was only
used for the KV complementation, and should be better redone on
tgba_digraph_ptr should it be needed again.
* src/bin/ltlcross.cc, src/dstarparse/dra2ba.cc,
src/dstarparse/nsa2tgba.cc, src/graphtest/tgbagraph.cc,
src/graphtest/tgbagraph.test, src/kripke/fairkripke.cc,
src/kripke/fairkripke.hh, src/kripke/kripke.cc, src/kripke/kripke.hh,
src/kripke/kripkeexplicit.cc, src/kripke/kripkeexplicit.hh,
src/misc/hash.hh, src/neverparse/neverclaimparse.yy, src/priv/accmap.hh,
src/ta/ta.cc, src/ta/ta.hh, src/ta/taexplicit.cc, src/ta/taexplicit.hh,
src/ta/taproduct.cc, src/ta/taproduct.hh, src/ta/tgta.cc,
src/ta/tgta.hh, src/ta/tgtaexplicit.cc, src/ta/tgtaexplicit.hh,
src/ta/tgtaproduct.cc, src/ta/tgtaproduct.hh, src/taalgos/dotty.cc,
src/taalgos/emptinessta.cc, src/taalgos/minimize.cc,
src/taalgos/tgba2ta.cc, src/tgba/Makefile.am, src/tgba/fwd.hh,
src/tgba/taatgba.cc, src/tgba/taatgba.hh, src/tgba/tgba.cc,
src/tgba/tgba.hh, src/tgba/tgbagraph.cc, src/tgba/tgbagraph.hh,
src/tgba/tgbamask.cc, src/tgba/tgbamask.hh, src/tgba/tgbaproduct.cc,
src/tgba/tgbaproduct.hh, src/tgba/tgbaproxy.cc, src/tgba/tgbaproxy.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasafracomplement.hh,
src/tgbaalgos/bfssteps.cc, src/tgbaalgos/complete.cc,
src/tgbaalgos/compsusp.cc, src/tgbaalgos/degen.cc,
src/tgbaalgos/dotty.cc, src/tgbaalgos/dtbasat.cc,
src/tgbaalgos/dtgbacomp.cc, src/tgbaalgos/dtgbasat.cc,
src/tgbaalgos/dupexp.cc, src/tgbaalgos/emptiness.cc,
src/tgbaalgos/emptiness.hh, src/tgbaalgos/gtec/ce.cc,
src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/gtec.hh,
src/tgbaalgos/gtec/sccstack.cc, src/tgbaalgos/gtec/sccstack.hh,
src/tgbaalgos/gv04.cc, src/tgbaalgos/hoaf.cc,
src/tgbaalgos/isweakscc.cc, src/tgbaalgos/lbtt.cc,
src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/magic.cc,
src/tgbaalgos/ndfs_result.hxx, src/tgbaalgos/neverclaim.cc,
src/tgbaalgos/postproc.cc, src/tgbaalgos/powerset.cc,
src/tgbaalgos/randomgraph.cc, src/tgbaalgos/randomgraph.hh,
src/tgbaalgos/reducerun.cc, src/tgbaalgos/replayrun.cc,
src/tgbaalgos/safety.cc, src/tgbaalgos/save.cc, src/tgbaalgos/scc.cc,
src/tgbaalgos/scc.hh, src/tgbaalgos/sccfilter.cc,
src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh,
src/tgbaalgos/se05.cc, src/tgbaalgos/simulation.cc,
src/tgbaalgos/simulation.hh, src/tgbaalgos/stats.cc,
src/tgbaalgos/stripacc.cc, src/tgbaalgos/tau03.cc,
src/tgbaalgos/tau03opt.cc, src/tgbaalgos/weight.cc,
src/tgbaalgos/weight.hh, src/tgbaparse/tgbaparse.yy,
src/tgbatest/Makefile.am, src/tgbatest/complementation.cc,
src/tgbatest/complementation.test, src/tgbatest/degenlskip.test,
src/tgbatest/det.test, src/tgbatest/dstar.test, src/tgbatest/emptchk.cc,
src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
src/tgbatest/explpro4.test, src/tgbatest/explprod.test,
src/tgbatest/ltl2tgba.cc, src/tgbatest/ltl2tgba.test,
src/tgbatest/maskacc.cc, src/tgbatest/maskacc.test,
src/tgbatest/neverclaimread.test, src/tgbatest/randtgba.cc,
src/tgbatest/readsave.test, src/tgbatest/sim.test,
src/tgbatest/sim2.test, src/tgbatest/spotlbtt.test,
src/tgbatest/tgbaread.test, src/tgbatest/tripprod.test,
iface/dve2/dve2.cc: Adjust or use to the new acceptance interface.
They are not used in Spot, and their interface is really horrible. They
are used in SOG-ITS to implement the SLAP product from TACAS'11, so we
should support the functionality eventually, but maybe using the new
kind of properties that can be attached to automata. In the meantime,
these classes are making refactoring harder.
* src/tgba/futurecondcol.cc, src/tgba/futurecondcol.hh,
src/tgba/tgbascc.cc, src/tgba/tgbascc.hh: Delete.
* src/tgba/Makefile.am, src/tgbatest/ltl2tgba.cc,
src/tgbatest/checkpsl.cc, src/tgbatest/emptchk.cc: Adjust.
The specifications are at http://adl.github.io/hoaf/
* src/tgbaalgos/hoaf.cc, src/tgbaalgos/hoaf.hh: New files.
* src/tgbaalgos/Makefile.am: Add them.
* src/bin/dstar2tgba.cc, src/bin/ltl2tgba.cc,
src/tgbatest/ltl2tgba.cc: Add option to output HOA.
* NEWS: Mention it.
This gets rid of many state*/int conversions. We now use scc_info
instead of scc_map. Finally the loops are now all 0-based.
* src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh (weak_sccs): New
method.
* src/tgbaalgos/dtbasat.cc, src/tgbaalgos/dtbasat.hh,
src/tgbaalgos/dtgbasat.cc, src/tgbaalgos/dtgbasat.hh: Use the
tgba_digraph interface.
* src/tgbatest/ltl2tgba.cc: Adjust calls.
Again instead of calling ltl2tgba dozen of times with different options
for various formulas, this implements a single executable that reads
formulas from a file, translate them using the different setups, and
dump statistics for comparison. Valgrind now only has to be started
once.
* src/tgbatest/checkta.cc: New file.
* src/tgbatest/Makefile.am: Use it.
* src/tgbatest/ltl2ta.test: Rewrite using checkta.
* src/tgbatest/ltl2tgba.cc: Remove a unused variable.
* src/tgba/tgbagraph.hh: Remove the set_bprop/get_bprop interface.
* src/tgba/tgba.cc, src/tgba/tgba.hh: Add a new interface for
setting/querying/copying the following properties: single_acc_set,
state_based_acc, inherently_weak, deterministic.
* src/dstarparse/dra2ba.cc, src/dstarparse/nra2nba.cc,
src/neverparse/neverclaimparse.yy, src/saba/sabacomplementtgba.cc,
src/tgba/tgbagraph.cc, src/tgbaalgos/degen.cc, src/tgbaalgos/dotty.cc,
src/tgbaalgos/isdet.cc, src/tgbaalgos/lbtt.cc,
src/tgbaalgos/minimize.cc, src/tgbaalgos/neverclaim.cc,
src/tgbaalgos/postproc.cc, src/tgbaalgos/sccfilter.cc,
src/tgbaalgos/simulation.cc, src/tgbatest/degenlskip.test,
src/tgbatest/ltl2tgba.cc: Adjust to the new interface, or use
it to bypass some useless work.
Replace it by a new degeneralize_tba(), that use the same tricks as
degeneralize().
* src/tgba/tgbatba.cc, src/tgba/tgbatba.hh: Delete.
* src/tgba/Makefile.am: Adjust.
* src/tgbaalgos/degen.cc, src/tgbaalgos/degen.hh: Implement
a degeneralize_tba() function sharing its code
with degeneralize().
* src/tgbatest/ltl2tgba.cc: Rename -D to -DT so that we can pass it the
same option as -DS.
* src/tgbatest/degenid.test, src/tgbatest/emptchk.test,
src/tgbatest/emptchke.test, src/tgbatest/ltlcounter.test,
src/tgbatest/ltlcross.test, src/tgbatest/spotlbtt.test,
src/tgbatest/ltl2tgba.test: Adjust.
* src/tgbatest/det.test, src/tgbatest/emptchk.test: Adjust numbers to
the smaller output.
* src/saba/sabacomplementtgba.cc, src/saba/sabacomplementtgba.hh,
src/tgbaalgos/minimize.cc, src/tgbaalgos/neverclaim.cc,
src/tgbaalgos/neverclaim.hh, src/tgbaalgos/postproc.cc,
src/tgbatest/randtgba.cc, src/tgbatest/complementation.cc,
wrap/python/spot.i, wrap/python/tests/ltl2tgba.py,
src/sabatest/sabacomplementtgba.cc: Adjust to the removal
of tgba_tba_proxy, using degeneralize_tba() if needed.
* src/tgba/tgbagraph.hh: Automatize the setting of the SingleAccSet
property.
* src/tgbaalgos/minimize.cc: Do not bother setting SingleAccSet.
* src/tgba/sba.hh: Delete.
* src/tgba/Makefile.am, wrap/python/spot.i: Adjust.
* src/taalgos/tgba2ta.cc: Do not include sba.hh.
* src/neverparse/neverclaimparse.yy: Set the SBA property on the output.
* src/tgbaalgos/lbtt.cc (lbtt_read_gba): Set the StateBasedAcc property
on output.
* src/tgbaalgos/dotty.cc, src/tgbaalgos/neverclaim.cc: Do not rely on
the sba interface.
* src/dstarparse/dra2ba.cc, src/dstarparse/nra2nba.cc,
src/tgbaalgos/simulation.cc, src/tgbaalgos/sccfilter.cc: Set
tgba_digraph::StateBasedAcc as appropriate.
* src/tgbatest/ltl2tgba.cc: Add extra assert.
This is a huge patch. tgba_digraph are equiped with some boolean
properties that can be used to indicate whether they represent SBA
(and will carry more informations later). All algorithms that produce
or use sba_explicit_* automata are changed to use tgba_digraph.
postproc has been rewritten using only tgba_digraph, and this required
changing the return types of many algorithms from tgba* to
tgba_digraph*.
* src/bin/dstar2tgba.cc, src/bin/ltlfilt.cc, src/dstarparse/dra2ba.cc,
src/dstarparse/dstar2tgba.cc, src/dstarparse/nra2nba.cc,
src/dstarparse/nsa2tgba.cc, src/dstarparse/public.hh,
src/tgba/tgbagraph.hh, src/tgba/tgbasafracomplement.cc,
src/tgbaalgos/compsusp.cc, src/tgbaalgos/compsusp.hh,
src/tgbaalgos/degen.cc, src/tgbaalgos/degen.hh,
src/tgbaalgos/dotty.cc, src/tgbaalgos/minimize.cc,
src/tgbaalgos/minimize.hh, src/tgbaalgos/postproc.cc,
src/tgbaalgos/postproc.hh, src/tgbaalgos/sccfilter.cc,
src/tgbaalgos/sccinfo.cc, src/tgbaalgos/stripacc.cc,
src/tgbaalgos/stripacc.hh, src/tgbaalgos/translate.cc,
src/tgbaalgos/translate.hh, src/tgbatest/ltl2tgba.cc,
wrap/python/spot.i: Update.
This translator algorithm is seldom used in practice because we work
with explicit automata everywhere, and this is only useful to build
symbolic automata. Furthermore, the symbolic automata produced by this
algorithm are larger (when looked at explicitly) than those produced by
ltl2tgba_fm or other explicit translators.
The nice side effect of this removal is that we can also remove a lot of
supporting classes, that were relying a lot on BDDs.
* src/tgba/public.hh, src/tgba/statebdd.cc, src/tgba/statebdd.hh,
src/tgba/succiterconcrete.cc, src/tgba/succiterconcrete.hh,
src/tgba/tgbabddconcrete.cc, src/tgba/tgbabddconcrete.hh,
src/tgba/tgbabddconcretefactory.cc, src/tgba/tgbabddconcretefactory.hh,
src/tgba/tgbabddconcreteproduct.cc, src/tgba/tgbabddconcreteproduct.hh,
src/tgba/tgbabddcoredata.cc, src/tgba/tgbabddcoredata.hh,
src/tgba/tgbabddfactory.hh, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/ltl2tgba_lacim.hh, src/tgbatest/bddprod.test,
src/tgbatest/mixprod.cc, src/tgbatest/mixprod.test: Delete all these
files.
* bench/ltlcounter/Makefile.am, bench/ltlcounter/README,
bench/ltlcounter/plot.gnu, bench/ltlcounter/run, src/tgba/Makefile.am,
src/tgbaalgos/Makefile.am, src/tgbatest/Makefile.am,
src/tgbatest/cycles.test, src/tgbatest/dupexp.test,
src/tgbatest/emptchk.test, src/tgbatest/ltl2tgba.cc,
src/tgbatest/ltl2tgba.test, src/tgbatest/ltlcross.test,
src/tgbatest/ltlprod.cc, src/tgbatest/spotlbtt.test,
src/tgbatest/wdba.test, src/tgbatest/wdba2.test,
src/tgba/tgbaexplicit.hh, wrap/python/ajax/ltl2tgba.html,
wrap/python/ajax/spot.in, wrap/python/spot.i,
wrap/python/tests/interdep.py, wrap/python/tests/ltl2tgba.py,
wrap/python/tests/ltl2tgba.test: Adjust.
This was only used in ELTL stuff, which I just removed because it was
unused.
* src/ltlast/automatop.cc, src/ltlast/automatop.hh,
src/ltlast/formula_tree.cc, src/ltlast/formula_tree.hh,
src/ltlast/nfa.cc, src/ltlast/nfa.hh: Delete.
* src/ltlast/Makefile.am: Adjust.
* src/ltlast/allnodes.hh, src/ltlast/formula.hh, src/ltlast/predecl.hh,
src/ltlast/visitor.hh, src/ltltest/equals.cc, src/ltltest/ltlrel.cc,
src/ltltest/reduc.cc, src/ltlvisit/clone.cc, src/ltlvisit/clone.hh,
src/ltlvisit/dotty.cc, src/ltlvisit/lbt.cc, src/ltlvisit/mark.cc,
src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh,
src/ltlvisit/relabel.cc, src/ltlvisit/simplify.cc, src/ltlvisit/snf.cc,
src/ltlvisit/tostring.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_lacim.cc, src/tgbatest/ltl2tgba.cc,
iface/dve2/dve2check.cc: Remove all references to automatop.
* src/priv/accmap.hh (acc_mapper): Rename into...
(acc_mapper_string): ... this, and add
(acc_mapper_int): ... this variant.
* src/tgbaparse/tgbaparse.yy: Adjust to renaming.
* src/tgbaalgos/lbtt.cc: Use acc_mapper_int and build an explicit
automaton.
* src/tgbaalgos/lbtt.hh: Adjust return type.
* src/tgbatest/ltl2tgba.cc: Adjust to new return type.
* src/graph/graph.hh (trans_iterator): Add operator->() and operator
bool().
* src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh: New files.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgbatest/ltl2tgba.cc: Use the new dump_scc_info_dot() function.
But do not replace it by std::unique_ptr, because this was not
really equivalent.
* src/misc/unique_ptr.hh: Delete.
* src/misc/Makefile.am: Adjust.
* src/tgbaalgos/simulation.cc, src/tgbatest/ltl2tgba.cc: Call
delete explicitly.
* src/tgbaalgos/dtbasat.cc, src/tgbaalgos/dtbasat.hh:
Rename dba_sat_minimize to dtba_sat_minimize.
Make it possible to produce state-based automata, and do
not output useless clauses.
* src/tgbaalgos/dtgbasat.cc, src/tgbaalgos/dtgbasat.hh:
likewise, but also add the possibility to set the
target number of states, as in dtba_sat_minimize.
* src/tgbaalgos/postproc.cc, src/tgbaalgos/postproc.hh:
Add new options for state-based computations and
setting acceptance and states number when using
dtgba_sat_minimize().
* src/tgbatest/ltl2tgba.cc: Adjust calls to
dtba_sat_minimize().
* src/tgbatest/satmin.test: Adjust calls.
Loosely based on "Complementing Deterministic Büchi Automata in
Polynomial Time", R. P. Kurshan, 1987, J. Comp. Syst. Sci. 35.
* src/tgbaalgos/dbacomp.cc, src/tgbaalgos/dbacomp.hh: New files.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgbatest/ltl2tgba.cc (-DC): New option to test it.
This is an implementation of Krishnan's ISAAC'94 paper to convert
deterministic Rabin automata into DBA when possible.
* src/dstarparse/dra2dba.cc: New file.
* src/dstarparse/dstar2tgba.cc: New file.
* src/dstarparse/Makefile.am: Add them.
* src/dstarparse/nra2nba.cc (nra_to_nba): Adjust so
that dra_to_dba() can call it using a masked automaton.
* src/dstarparse/public.hh (dra_to_dba, dstar_to_tgba): Declare.
* src/tgbatest/ltl2tgba.cc: Add an -XDD option.
* src/tgbatest/dstar.test: More tests.
The set of rules enabled by favor_even_univ try to "lift" the
subformulae that are both eventual and universal, so they appear
higher in the AST. This is contrary to what we used to do (and still
do when the option is unset), were we try to postpone such subformulae
(by moving them down the AST). It is still a bit experimental.
* src/ltlvisit/simplify.hh: Add option favor_event_univ.
* src/ltlvisit/simplify.cc: Implement new rewriting rules.
* doc/tl/tl.tex: Document them.
* src/tgbatest/ltl2tgba.cc: Add option -ra to enable them.
* src/tgbatest/spotlbtt.test: Test the translation with this option.
* src/ltltest/reduc.cc, src/ltltest/equals.cc: Add option
to enable the new rules.
* src/ltltest/eventuniv.test: New file to test them.
* src/ltltest/Makefile.am: Add it.
* src/tgba/bddprint.cc, src/tgba/bddprint.hh: Add bdd_print_isop
that prints the bdd into a Irreductible Sum Of Product.
* src/tgbaalgos/dupexp.cc, src/tgbaalgos/dupexp.hh: Add a way to
know which states (in the input) is which (in the result).
* src/tgbaalgos/simulation.cc, src/tgbaalgos/simulation.hh: Add
the Don't Care Simulation and the Don't Care Iterated Simulation.
* src/tgbatest/ltl2tgba.cc, src/tgbatest/spotlbtt.test,
src/tgbatest/Makefile.am, src/tgbatest/sim.test: Test them.
* bench/ltl2tgba/algorithms, bench/ltl2tgba/README,
bench/ltl2tgba/algorithms: Add a way to bench the don't care
simulation.
Because benchmark show that this option usually do not help.
* src/tgbaalgos/degen.hh, src/tgbatest/ltl2tgba.cc: Here.
* src/tgbaalgos/degen.hh: Document the new options.
