Based on a report by Jean Kreber.
* spot/tl/relabel.cc (cut_points): Really connect children of Boolean
operators using undirected edges, not directed ones.
* tests/core/ltlrel.test: Add test cases.
* NEWS: Mention the bug.
* spot/twaalgos/relabel.cc: Detect false edges as they are created,
even as the result of multiple renamings.
* tests/core/ltl2tgba2.test: More test cases, reported by Jens Kreber.
* NEWS: Mention the bug.
* THANKS: Add Jens.
* spot/twaalgos/toparity.hh, spot/twaalgos/toparity.cc: Use the
original names, to minimize differences with spot 2.8. Deprecate
them.
* tests/python/except.py: Adjust.
* NEWS: Mention the change.
Reported by Juraj Major.
* spot/twaalgos/sccinfo.cc (scc_info::get_accepting_run): Do not
assume TRACK_STATES is enabled.
* tests/core/autcross5.test: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention the bug.
Reported by Juraj Major.
* spot/twaalgos/sccinfo.cc (scc_info::get_accepting_run): Do not
assume TRACK_STATES is enabled.
* tests/core/autcross5.test: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention the bug.
* bin/ltlcross.cc: Since is_empty() now works with arbitrary
acceptance conditions, calling remove_fin() is not necessary anymore.
* tests/core/ltlcrossce.test: Adjust.
* NEWS: Mention the change.
* spot/twaalgos/relabel.cc: Remove false transitions if
some of the propositions are equivalent to true or false.
* NEWS: Mention the bug.
* tests/core/ltl2tgba2.test: Test it.
* bin/autfilt.cc: Add a --partial-degeneralize option.
* NEWS: Mention it.
* spot/twaalgos/degen.cc: Do not restrict partial_degeneralize() to
deterministic automata.
* spot/twaalgos/degen.hh: Adjust documentation.
* tests/core/pdegen.test: New test case.
* tests/Makefile.am: Add it.
* tests/python/pdegen.py: Adjust.
* spot/twaalgos/relabel.cc: Remove false transitions if
some of the propositions are equivalent to true or false.
* NEWS: Mention the bug.
* tests/core/ltl2tgba2.test: Test it.
* spot/twaalgos/degen.cc, spot/twaalgos/degen.hh: Implement this.
Also throw a runtime error in case were todegen does not match any
subformula.
* tests/python/pdegen.py: Add tests.
On these 4 cases, added to pdegen.py, and supplied by Florian Renkin,
partial_degeneralize() is now at least as good as degeneralize_tba(),
and sometimes better. This is achieved as follows: (1) a
propagate_marks procedure is introduced to propagate marks as far as
possible on the automaton (e.g., common outgoing marks can be push
onto the incoming transitions and vice-versa), (2) the
degeneralization order is compute dynamically, and (3) whenever and
fully-accepting transition is taken in the original automaton, the
destination level is chosen to be the highest existing level.
* spot/twaalgos/degen.cc,
spot/twaalgos/degen.hh (propagate_marks_vector, propagate_marks_here):
New functions.
(partial_degeneralize): Improve, as described above.
* tests/python/pdegen.py: Add test cases.
Reported by František Blahoudek.
* spot/twa/twagraph.cc: Reset prop_universal() if edges are merged in
a non-deterministic automaton.
* tests/core/det.test: Add test case.
* NEWS: Mention the issue.
Reported by František Blahoudek.
* spot/twaalgos/postproc.cc: Turn "t" into "Inf(0)" for BA.
* tests/core/ltl2tgba.test: Add test case.
* NEWS: Mention the bug.
Reported by František Blahoudek.
* spot/twa/twagraph.cc: Reset prop_universal() if edges are merged in
a non-deterministic automaton.
* tests/core/det.test: Add test case.
* NEWS: Mention the issue.
Reported by František Blahoudek.
* spot/twaalgos/postproc.cc: Turn "t" into "Inf(0)" for BA.
* tests/core/ltl2tgba.test: Add test case.
* NEWS: Mention the bug.
* spot/twaalgos/degen.hh, spot/twaalgos/degen.cc: Implement it.
* tests/python/pdegen.py: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention the new function.
