* bin/common_trans.cc, bin/common_trans.hh: Add the --relabel option.
* bin/ltlcross.cc, bin/ltldo.cc: Implement it.
* doc/org/ltldo.org, NEWS: Document it.
* tests/core/ltl3ba.test: Test it.
* spot/twaalgos/minimize.cc (minimize_wdba): Diminish the color of
terminal SCCs that are incomplete, as if they had a non-accepting
sink as successor.
* spot/twaalgos/strength.hh, spot/twaalgos/strength.cc
(is_terminal_automaton): Add an option to ignore trivial SCC as we did
before, since it matters for deciding membership to the guarantee
class.
(is_safety_mwdba): Rewrite as ...
(is_safety_automaton): ... generalizating to any acceptance, and
ignoring trivial SCCs.
* bin/ltlfilt.cc, python/ajax/spotcgi.in, spot/tl/hierarchy.cc,
tests/core/ikwiad.cc: Adjust usage of is_terminal_automaton and
is_safety_automaton().
* tests/core/hierarchy.test: Add a problematic formula as test-case.
* NEWS: Mention the bug.
Tools for deciding the class of a formula.
* spot/tl/hierarchy.cc, spot/tl/hierarchy.hh: New files.
* spot/tl/Makefile.am: Add them.
* bin/common_output.cc, bin/common_output.hh: Implement --format=%h.
* tests/core/hierarchy.test: More tests.
* NEWS: Update.
* spot/twaalgos/remfin.cc, spot/twaalgos/remfin.hh
(rabin_to_buchi_maybe): Make this function public.
* bin/ltlfilt.cc: Implement the two options.
* tests/core/hierarchy.test: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention the new options.
* python/spot/__init__.py: Handle options.
* spot/twaalgos/dtwasat.cc: Handle options.
* spot/twaalgos/postproc.cc: Handle options.
* spot/twaalgos/postproc.hh: Handle options.
* tests/core/satmin.test: Update tests.
Now use 'sat-minimize=4' to use the naive algo.
* tests/core/satmin2.test: Update tests.
Now use --sat-minimize='naive' to use the naive algo.
* tests/python/satmin.py: Update tests.
Now use 'naive=True' to use the naive algo.
* python/spot/__init__.py: Add 'assume' option.
* spot/misc/satsolver.cc: Add function to handle assumptions.
* spot/misc/satsolver.hh: Declare assumption function.
* spot/twaalgos/dtbasat.cc: Implement dtba_sat_minimize_assume.
* spot/twaalgos/dtbasat.hh: Declare it.
* spot/twaalgos/dtwasat.cc: Implement dtwa_sat_minimize_assume and
handle options.
* spot/twaalgos/dtwasat.hh: Declare it.
* spot/twaalgos/postproc.cc: Handle options.
* spot/twaalgos/postproc.hh: Use param_ var for incr and assume.
* tests/core/satmin.test: Add tests for the new function.
* tests/core/satmin2.test: Add tests for the new function.
* tests/python/satmin.py: Add tests for the new function.
* spot/misc/satsolver.hh: Make solver return vector<bool> instead of
vector<int>.
* spot/misc/satsolver.cc: Update code.
* spot/priv/Makefile.am: Add satcommon.*
* spot/priv/satcommon.hh: Declare helper class and factorize some
duplicate code of dt*asat.cc
* spot/priv/satcommon.cc: Implement helper class and factorize some
duplicate code of dt*asat.cc
* spot/twaalgos/dtbasat.cc: Declare helper, implement some functions
in dict struct and update code.
* spot/twaalgos/dtwasat.cc: Declare helper, implement some functions
in dict struct and update code.
* tests/core/readsat.cc: Update tests.
* tests/core/satmin.test: Typo.
* tests/core/satmin2.test: Update an expected result.
* spot/graph/graph.hh (internal::univ_dest_mapper): New helper class.
* spot/twa/twagraph.cc (merge_univ_dests): Simplify using
univ_dest_mapper.
(purge_unreachable_states, purge_dead_states): Add support for
alternation.
* tests/core/alternating.test: More tests.
and call it after parsing
* spot/twa/twagraph.cc, spot/twa/twagraph.hh
(twa_graph::merge_univ_dests): New method.
* spot/parseaut/parseaut.yy: Call it.
* spot/twaalgos/dot.cc: Improve output, now that
several edges can use the same universal destination.
* tests/core/alternating.test, tests/core/complete.test,
tests/core/parseaut.test, tests/python/_altscc.ipynb,
tests/python/alternating.py, tests/python/alternation.ipynb: Adjust
test case.
* doc/org/tut24.org: Adjust example.
* spot/twa/twa.hh: Implement the property.
* spot/parseaut/parseaut.yy, spot/twaalgos/hoa.cc: Add input
and output for it.
* spot/twaalgos/strength.cc,
spot/twaalgos/strength.hh (is_very_weak_automaton): New function.
* tests/core/alternating.test: Add a test for --check=strength
on an alternating automaton.
* tests/core/strength.test, tests/core/parseaut.test: Adjust expected
output.
* NEWS, doc/org/hoa.org, doc/org/concepts.org: Document it.
* spot/parseaut/parseaut.yy (fix_initial_state): Use
spot::internal::outgoing_edge_group to reduce all initial states to a
single one.
* tests/core/parseaut.test: Add more tests.
The only missing point is that the HOA parser cannot deal with multiple
universal initial states, as seen in parseaut.test.
* spot/graph/graph.hh (new_univ_dests): New function, extracted from...
(new_univ_edge): ... this one.
* spot/twa/twagraph.hh (set_univ_init_state): Implement using
new_univ_dests.
* spot/twaalgos/dot.cc, spot/twaalgos/hoa.cc, python/spot/impl.i:
Add support for universal initial states.
* spot/parseaut/parseaut.yy: Add preliminary support for
universal initial states. Multiple universal initial states
are still not supported.
* tests/core/alternating.test, tests/core/parseaut.test,
tests/python/alternating.py: Adjust tests and exercise this new feature.
Currently this only reads universal branches. The parser (and the
automaton code) do not support universal initial states.
* spot/parseaut/parseaut.yy: Read universal branches. Deal with
the no-univ-branch/!univ-branch change in HOA 1.1.
* tests/python/alternating.py: Read the output of print_hoa.
* tests/core/parseaut.test: Adjust test output, and add more tests.
* spot/graph/graph.hh: Use the sign bit of destination state X to
designate a universal edge. Store the destinations of such an edge in a
separate array, at index ~X.
* spot/graph/ngraph.hh, tests/core/graph.cc, tests/core/graph.test,
tests/core/ngraph.cc: Adjust test case to the new interface.
This version has optimization for explicit twa, and also for weak and
terminal (depending on whether an accepting run is requested) automata.
* spot/twaalgos/couvreurnew.hh, spot/twaalgos/couvreurnew.cc,
spot/twaalgos/Makefile.am: New files for the new algorithm.
* spot/twaalgos/emptiness.cc, tests/core/randtgba.cc:
Register new algorithm.
Reported by Shufang Zhu.
* spot/tl/ltlf.cc, spot/tl/ltlf.hh: Fix the transltion
and update the comments.
* tests/core/ltlfilt.test: Adjust test cases.
* NEWS: Mention the fix.
* THANKS: Add Shufang Zhu.
... by calling valgrind less often.
* tests/core/reduc.test, tests/core/reducpsl.test: Call
valgrind only on 1 of the 12 calls to randltl, and
2 of the 7 calls to reduc.
* tests/core/readltl.cc: Process many formulas from a
file instead of one arg at a time.
* tests/core/parse.test, tests/core/parseerr.test, tests/core/utf8.test:
Adjust to supply a file as input.
Fix#198. Reported by Maximilien Colange.
* spot/twaalgos/strength.cc (is_terminal): Test that no accepting
transition lead to a rejecting SCC.
* tests/core/strength.test: Add test case.
* spot/twaalgos/strength.hh, spot/twa/twa.hh, doc/org/concepts.org:
Adjust documentation.
* NEWS: Mention the fix.
* spot/twaalgos/remfin.cc: Do not add a sink states to deterministic
weak automata, and actually apply the "weak" Fin-removal to any weak
automaton.
* tests/core/explprod.test: Add a test case for the previous patch,
but that used to fail because of this bug.
* NEWS: Mention the bug.
Related to #188. This is a third fix that independently
makes `'utfilt --is-unambiguous -q smaller.hoa' instantaneous.
* spot/twaalgos/remfin.cc: Clean the received automaton if
necessary.
* bin/autfilt.cc: No need to call cleanup_acceptance_here() before
remove_fin() anymore.
* tests/core/remfin.test: Add an additional test.
* NEWS: Mention the change.
Avoid calling scc_info::determine_unknown_acceptance on the product, as
suggested in #188.
* spot/twaalgos/isunamb.cc (is_unambiguous): Rewrite.
* tests/core/unambig.test: Add the automaton from #188.
* NEWS: Mention the improved function.
* spot/twaalgos/mask.cc,
spot/twaalgos/mask.hh (mask_keep_accessible_states): New function.
Suggested by František Blahoudek.
* bin/ltlcross.cc: Implement the two options.
* doc/org/ltlcross.org, NEWS: Document them.
* tests/core/complementation.test: Adjust test case.
* tests/core/ltlcross3.test, tests/core/unambig.test: More tests.
Report from František Blahoudek.
* bin/ltlcross.cc: Do not display stats for automata
that do not exist.
* tests/core/ltlcross3.test: Test it.
* NEWS: Mention the fix.
