Now that we support any type of omega-accetpance, not just "Generalized
Büchi", it is time to move away from GB and replace it by "ω", written
just w in ASCII.
This just change the name of the tgba class. This part has to be done
by hand because the word "tgba" occurs in many contexts and a mass
replacement would be wrong.
This will be followed by some automatic renaming of all the derived
types and more.
* src/bin/autfilt.cc, src/bin/randaut.cc, src/kripke/fairkripke.hh,
src/ta/tgta.cc, src/ta/tgta.hh, src/tgba/fwd.hh, src/tgba/taatgba.cc,
src/tgba/taatgba.hh, src/tgba/tgba.cc, src/tgba/tgba.hh,
src/tgba/tgbagraph.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/are_isomorphic.cc, src/tgbaalgos/cleanacc.cc,
src/tgbaalgos/dotty.cc, src/tgbaalgos/dupexp.cc,
src/tgbaalgos/dupexp.hh, src/tgbaalgos/hoa.cc,
src/tgbaalgos/neverclaim.cc, src/tgbaalgos/simulation.cc,
src/tgbaalgos/stutter.cc, src/tgbatest/checkpsl.cc,
src/tgbatest/emptchk.cc, src/tgbatest/ltl2tgba.cc, wrap/python/spot.py,
wrap/python/spot_impl.i: Rename the tgba class into twa.
Add these two options as an answer to comments in
https://github.com/adl/hoaf/issues/39
* src/bin/autfilt.cc: Add those options. Also
make --keep-state use --remove-unreachable-states
instead of the less efficient --remove-dead-states
by default.
* src/tgbatest/readsave.test: Test them.
This was discussed in the comments of
https://github.com/adl/hoaf/issues/39
* src/hoaparse/hoaparse.yy: Rename defined_states as info_states
and keep additional information about states in this vector to
diagnose undefined states.
* src/tgbatest/hoaparse.test: Add a test case.
* src/tgbaalgos/dotty.cc: Add option 'o'.
* src/bin/common_aoutput.cc, src/bin/dstar2tgba.cc: Document it.
* src/taalgos/dotty.cc: Ignore this option.
* src/tgbatest/readsave.test: Test it.
Fixes#72.
* src/tgbaalgos/totgba.cc, src/tgbaalgos/totgba.hh: New files.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgbaalgos/postproc.cc, src/tgbaalgos/postproc.hh: Add
a Generic output type, and call to_generalized_buchi() if
this type is not selected.
* src/tgbatest/remfin.test: Add some tests.
* src/bin/autfilt.cc: Add a --generic option, and set it
by default.
* src/tgbaalgos/degen.cc, src/tgbaalgos/degen.hh: New argument
to disable the "jump to the accepting level if the entering
state as an accepting self-loop" optimization.
* src/tgbaalgos/postproc.cc, src/tgbaalgos/postproc.hh: Check
the degen-lowinit option and pass it on to degeneralize().
* src/bin/spot-x.cc: Document it.
* src/tgbatest/degenlskip.test: Add some tests.
* src/tgbatest/ltl2ta.test: Update value. We output less
accepting states now.
Doing so is not wrong, but it's superfluous, and the extra accepting
state will cause additional work in emptiness checks based on NDFS.
Report from Jan Strejček.
* src/tgbaalgos/degen.cc: Here.
* src/tgbatest/degenid.test: Add a test case.
* src/bin/autfilt.cc: Add option.
* src/ltlvisit/exclusive.cc, src/ltlvisit/exclusive.hh: implement it.
* src/tgbatest/exclusive.test: Test it.
* src/misc/minato.cc, src/misc/minato.hh: Add an interface to
simplify a Boolean function with don't care.
Fixes#70.
We don't modify the behavior of mask_keep_states(), because it is
actually useful in some algorithm to remove states without renumbering
all the other states.
* src/bin/autfilt.cc: Call purge_dead_states().
* src/tgbatest/maskkeep.test: Adjust.
* src/tgba/acc.cc, src/tgba/acc.hh: Add a way to extract
an unstatisfiable mark, and fix the eval() function for
Fin acceptance.
* src/tgbaalgos/complete.cc: Label the sink state using
an unsatisfiable mark. Do not assume generalized Büchi.
* src/tgbatest/complete.test: New test.
* src/tgbatest/Makefile.am: Add it.
Sometimes, simplifying the acceptance condition (because it refers to
sets that do not appear in the automaton) cause more sets to be removed
from the acceptance condition, and therefore warrant another pass to
remove those sets from the automaton.
* src/tgbaalgos/cleanacc.cc: Here.
* src/tgbatest/hoaparse.test: Add a test case.
It makes more sense to assume that the removed set cannot be visited.
* src/tgbaalgos/mask.cc: Flip a Boolean.
* src/tgbatest/maskacc.test: Adjust test case.
* doc/org/autfilt.org: Add an example.
* src/tgba/tgbagraph.cc (purge_dead_states): Using a DFS to compute a
topological order, allowing to remove useless using a second
pass (instead of iterating the passes until there is nothing to remove).
* src/tgbaalgos/remfin.cc: Call purge_dead_states().
* src/tgbatest/remfin.test, src/tgbatest/det.test: Adjust expected
output.
* doc/org/autfilt.org: Update example.
Fixes#62.
* src/tgbaalgos/dtbasat.cc, src/tgbaalgos/dtgbasat.cc: Add call to
prop_state_based_acc() when building an automaton with state-based
acceptance.
* src/tgbatest/satmin2.test: New test.
* doc/org/satmin.org: Update.
This implement several new options for --dot in order to
allow emptiness sets to be output as colored ⓿ or ❶...
Also add a SPOT_DOTDEFAULT environment variable.
* NEWS, src/bin/man/spot-x.x, src/bin/common_aoutput.cc,
src/bin/dstar2tgba.cc: Document the new options.
* doc/org/.dir-locals.el, doc/org/init.el.in: Setup
SPOT_DOTEXTRA and SPOT_DOTDEFAULT for all documents.
* doc/org/autfilt.org, doc/org/dstar2tgba.org, doc/org/ltl2tgba.org,
doc/org/ltldo.org, doc/org/oaut.org, doc/org/randaut.org,
doc/org/satmin.org: Adjust to this new setup.
* src/misc/escape.cc, src/misc/escape.hh (escape_html): New function.
* src/tgba/acc.cc, src/tgba/acc.hh (to_text, to_html): New method.
* src/tgbaalgos/dotty.cc: Implement the new options.
* src/tgbatest/readsave.test, wrap/python/tests/automata.ipynb: More
tests.
* wrap/python/spot.py: Make sure the default argument for
dotty_reachable is None, so that SPOT_DOTDEFAULT is honored.
* src/tgbaalgos/dotty.cc, src/taalgos/dotty.cc: Honnor the SPOT_DOTEXTRA
environement variable.
* src/tgbatest/readsave.test, wrap/python/tests/automata.ipynb: Test it.
* NEWS, src/bin/man/spot-x.x: Document it.
* src/tgba/acc.cc, src/tgba/acc.hh (to_cnf, is_cnf): New functions.
* src/bin/autfilt.cc: Add a --cnf-acceptance option.
* src/tgbatest/acc2.test: Test it.
A Fin() terms with multiple sets should not appear under an And.
* src/tgba/acc.cc (is_dnf): Fix it.
* src/tgbatest/acc.cc, src/tgbatest/acc.test: Augment test case.
This way we have for instance
(Inf(1) | Fin(2)) & (Fin(1) | Inf(3)) & Inf(0)
converted into just
(Fin(1) & Fin(2) & Inf(0)) | (Inf(0)&Inf(1)&Inf(3))
while previously we would produce 4 terms:
(Fin(2) & Fin(1) & Inf(0)) | (Fin(2) & (Inf(0)&Inf(3)))
| (Fin(1) & (Inf(0)&Inf(1))) | (Inf(0)&Inf(1)&Inf(3))
* src/tgba/acc.cc (to_dnf): Recode it.
* src/tgbatest/acc2.test: Adjust.
Because scc_info does not perform a full emptiness check, it is not
always able to tell whether an SCC is accepting if the acceptance
condition use Fin primitives. This introduce is_rejecting_scc() in
addition to to is_accepting_scc(). Only one of them may be true, but
they can both be false if scc_info has no idea whether the SCC is
accepting.
* src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh: Implement
is_rejecting_scc().
* src/bin/ltlcross.cc, src/tgba/acc.cc, src/tgba/acc.hh,
src/tgbaalgos/dtgbacomp.cc, src/tgbaalgos/isweakscc.cc,
src/tgbaalgos/remfin.cc, src/tgbaalgos/safety.cc,
src/tgbaalgos/sccfilter.cc: Use it.
* src/tgbaalgos/dotty.cc: Use is_rejecting_scc() and is_accepting_scc()
to color SCCs.
* doc/org/oaut.org: Document the colors used.
* src/tgbatest/neverclaimread.test, src/tgbatest/readsave.test: Adjust
tests.
* src/tgbatest/sccdot.test: New test case.
* src/tgbatest/Makefile.am: Add it.
Fixes#59.
* src/tgbaalgos/hoa.cc: Add option i.
* src/bin/common_aoutput.cc, src/bin/dstar2tgba.cc,
src/tgbaalgos/hoa.hh: Document it.
* src/tgbatest/hoaparse.test: Test it.
* src/tgbaalgos/dotty.cc: Display the acceptance if "a" is used.
* src/bin/common_aoutput.cc, src/bin/dstar2tgba.cc,
src/tgbaalgos/dotty.hh: Document it.
* src/tgbatest/readsave.test: Test it.
* src/tgba/acc.cc, src/tgba/acc.hh: Move the strip() routine from
acc_cond into acc_cond::mark_t, and the strip() routine from
cleanacc.cc into acc_cond::acc_code. Introduce helper functions
to create inf()/fin()/t()/f() at the acc_code level.
* src/tgbaalgos/cleanacc.cc: Simplify, using the strip() function
from acc_code.
* src/tgbaalgos/mask.cc (mask_acc_sets): Use the strip() function
from acc_code so that it work on non-Buchi acceptance.
* src/tgbatest/maskacc.test: Add a test for the latter change.
* src/tgbaalgos/sccfilter.cc, src/tgbatest/acc.cc: Adjust the
use mark_t::strip().
* src/bin/ltlcross.cc: Remove Fin-acceptance before
doing checks. More --verbose output.
* src/tgba/acc.cc, src/tgba/acc.hh: Add an eval_sets() function
to find the set of acceptance sets needed to satisfy the condition
in an accepting SCC.
* src/tgbaalgos/gtec/ce.cc: Use eval_sets() when computing
a counter example.
* src/tgbaalgos/gtec/gtec.cc: Raise an exception when called
on an acceptance that contains Fin.
* src/tgbatest/ltl2dstar3.test, src/tgbatest/ltlcrossce2.test:
New files.
* src/tgbatest/Makefile.am: Add them.
* src/tgba/tgba.cc (is_empty): Call remove_fin if needed.
* src/tgbaalgos/product.cc, src/tgbaalgos/dtgbacomp.cc: Adjust
to work with generic acceptance.
Instead of adding one set per term in the DNF, reuse the
removed Fin(x) sets as Inf(x) sets.
* src/tgbaalgos/remfin.cc: Here.
* src/tgbatest/remfin.test: Additional test.
* src/tgba/acc.cc, src/tgba/acc.hh (complement): New method.
* src/bin/autfilt.cc: Add a --complement-acceptance option.
* src/tgbatest/acc2.test: Test it.
* src/tgbaalgos/cleanacc.cc, src/tgbaalgos/cleanacc.hh: New file.
* src/tgbaalgos/Makefile.am: Add them.
* src/tgba/acc.hh, src/tgba/tgba.hh (get_acceptance): Return a
reference.
* src/bin/autfilt.cc: Add a --cleanup-acceptance option.
* src/tgbatest/hoaparse.test: Test it.
and make sure are_isomorphic does not look only at the number of
acceptance sets
* src/tgba/acc.hh: Here.
* src/tgbaalgos/are_isomorphic.cc: Use it to ensure two automata
have the same acceptance condition.
* src/tgbatest/explpro4.test: Test product between Büchi and co-Büchi,
and make sure the isomorphic check look at the acceptance condition.
* src/tgbaalgos/mask.cc, src/tgbaalgos/mask.hh: Rename transform_mask
to accessible_mask. Add Copy version and use it in mask_keep_states().
* src/tgbatest/maskkeep.test: Update.
