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.
This is faster than using the abstract interface, and it also supports
alternating automata. (This will be tested in the tests for
ltlcross's support for alternating automata.)
* spot/twaalgos/stats.cc (stats_reachable, sub_stats_reachable):
Add code specific to twa_graph_ptr.
* spot/twaalgos/remfin.cc (remove_fin_weak): Ignore unreachable
states. This caused crashes in the test cases for the
upcoming alternation support in ltlcross.
This mixes the subset construction (for 1-state rejecting SCCs) and
the breakpoint construction (for larger rejecting SCCs). The
algorithm should probably be rewritten in a cleaner and more efficient
way, but that should do for a first version. It should be easy to
extend it to support Büchi acceptance (since the breakpoint
construction works for this) when we need it.
* spot/twaalgos/alternation.hh,
spot/twaalgos/alternation.cc (remove_alternation): New function.
* tests/python/alternation.ipynb: New file.
* tests/Makefile.am, doc/org/tut.org: Add it.
* 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.
This should will come handy to implement the convertion from LTL to
alternating automata, and to handle automata with multiple initial
states.
* spot/twaalgos/alternation.hh, spot/twaalgos/alternation.cc: New files.
* spot/twaalgos/Makefile.am: Add them.
* python/spot/impl.i: Add bindings.
* tests/python/alternating.py: Test states_and.
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.
This only allows creating universal edges, and reading the associated
destinations.
* spot/twa/twagraph.hh (new_univ_edges, univ_dests, is_alternating): New
function.
* python/spot/impl.i: Add Python bindings.
* tests/python/alternating.py: New file.
* tests/Makefile.am: Add it.
* 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.
* python/spot/__init__.py (automata): Do not create a session for
every command, this is only needed if automata() is run with a timeout
parameter.
* python/ajax/spotcgi.in: Adjust exclude the main process from
the process group, so that only children are killed on SIGALRM.
* NEWS: Mention the bug.
* python/spot/__init__.py (automata): Do not create a session for
every command, this is only needed if automata() is run with a timeout
parameter.
* python/ajax/spotcgi.in: Adjust exclude the main process from
the process group, so that only children are killed on SIGALRM.
* NEWS: Mention the bug.
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.
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.
Compilation of each header file alone, as a safety check, was removed
when introducing "#pragma once" because we did not have to check for
possible double inclusion. However we still need to compile each
header to make sure they are self-contained.
* tests/sanity/includes.test: Compile each header.
* tests/run.in: Export various compiler and directory flags.
* spot/twaalgos/emptiness_stats.hh, spot/misc/mspool.hh,
spot/misc/fixpool.hh: Include <spot/misc/common.hh>.
* spot/misc/common.hh: Include <cassert>.
* NEWS: Mention the fixed headers.
Compilation of each header file alone, as a safety check, was removed
when introducing "#pragma once" because we did not have to check for
possible double inclusion. However we still need to compile each
header to make sure they are self-contained.
* tests/sanity/includes.test: Compile each header.
* tests/run.in: Export various compiler and directory flags.
* spot/twaalgos/emptiness_stats.hh, spot/misc/mspool.hh,
spot/misc/fixpool.hh: Include <spot/misc/common.hh>.
* spot/misc/common.hh: Include <cassert>.
* NEWS: Mention the fixed headers.
This should solve issue with the Debian package.
* spot/ltsmin/Makefile.am: Use the LTDLINC, LTDLDEPS and LIBLTDL as
documented.
* NEWS: Mention the fix.
