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Operator &= used to always move Fin to the front, it does not anymore.
The only thing it does now is to merge Inf(x)&Inf(y) as Inf({x,y}).
Operator |= is now symmetrical and merges Fin()s.

Fixes #253.

* spot/twa/acc.cc, spot/twa/acc.hh: Simplify &= and make |= symmetrical.
* spot/twaalgos/cleanacc.cc: Fix conjunction order.
* tests/core/acc.test, tests/core/acc2.test, tests/core/parseaut.test,
tests/core/readsave.test, tests/core/satmin2.test,
tests/core/sccdot.test, tests/python/acc_cond.ipynb,
tests/python/accparse.ipynb, tests/python/automata.ipynb,
tests/python/product.ipynb, tests/python/randaut.ipynb: Adjust test
cases.

Fixes #258.

* spot/twaalgos/copy.cc: Delete, and move the code...
* spot/twa/twagraph.cc: ... in some anonymous namespace here.
* spot/twa/twagraph.hh: Adjust the make_twa_graph() overload.
* spot/twaalgos/copy.hh, NEWS: Mark copy() as deprecated and redirect
to make_twa_graph().
* doc/org/upgrade2.org, doc/org/tut51.org, python/spot/impl.i,
spot/twaalgos/dot.cc, spot/twaalgos/langmap.cc, tests/core/ikwiad.cc:
Adjust callers.
* spot/twaalgos/Makefile.am: Remove copy.cc.

Fixes #276.

* spot/twaalgos/sbacc.cc, spot/twaalgos/degen.cc: Detect accepting
sinks, and merge them.
* tests/python/dualize.py: Adjust.
* tests/python/sbacc.py: More test cases.

* spot/priv/bddalloc.cc: Add hooks on request.
* bin/man/spot-x.x, NEWS: Document the envvar.

Fixes #273.

* NEWS: Mention this.
* spot/twaalgos/dualize.cc, tests/python/dualize.py: Adapt dualize.
* spot/twaalgos/sbacc.cc, tests/core/sbacc.test: sbacc support
  alternating automata

* NEWS: mention the modification.
* python/spot/impl.i: makes to_weak_alternating visible from python
* spot/twaalgos/Makefile.am, spot/twaalgos/toweak.cc,
  spot/twaalgos/toweak.hh: Implements to_weak_alternating.
* tests/Makefile.am, tests/python/toweak.py: Test the results of
  to_weak_alternating.

These two functions were doing almost identical work, the only
difference was the way to select the SCC to keep.  Now we have a more
uniform way to do that.  Closes #172.

* bin/autfilt.cc: Offer a unique --decompose-scc option, but keep
--decompose-strength as an alias for backward compatibility.
* spot/twaalgos/strength.cc, spot/twaalgos/strength.hh: Rename
decompose_strength as decompose_scc, and handle a way to list
all SCC numers in the string specifier.  This gets rid
of the nearly identical
* tests/core/scc.test, tests/core/strength.test,
tests/python/decompose.ipynb, tests/python/decompose_scc.py: Adjust
test cases.
* NEWS: Adjust.

* NEWS, configure.ac: Bump version to 2.3.5.dev.

* NEWS, configure.ac, doc/org/setup.org: Update version.

Fixes #268, reported by Yann Thierry-Mieg.

* spot/twaalgos/translate.cc, spot/twaalgos/translate.hh: Call
relabel_bse() + relabel_here().
* tests/core/format.test: Add a test case.
* bin/spot-x.cc, NEWS: Document the change.

* spot/twaalgos/relabel.cc: Deal with the cases where the substitution
value is a Boolean formula.
* spot/twaalgos/relabel.hh: Improve documentation.
* tests/python/relabel.py: Add more tests.
* python/spot/impl.i: Add bindings for are_isomorphic for the above
test.
* NEWS: Mention the news.

Fixes #269.

* spot/twaalgos/stats.cc: Use twa_statistics instead of
twa_sub_statistics when %t is not used.
* bin/common_aoutput.cc: Likewise, also fix %S to use twa_statistics
instead of num_states(), and document that %s,%t,%e all return
statistics about the reachable part of the automaton.
* tests/core/format.test: Add more tests.
* NEWS: Document the issue.

Fixes #269.

* spot/twaalgos/stats.cc: Use twa_statistics instead of
twa_sub_statistics when %t is not used.
* bin/common_aoutput.cc: Likewise, also fix %S to use twa_statistics
instead of num_states(), and document that %s,%t,%e all return
statistics about the reachable part of the automaton.
* tests/core/format.test: Add more tests.
* NEWS: Document the issue.

* NEWS: Mention the modification.
* spot/twaalgos/remfin.cc: Adapt to avoid infinite recursion.
* spot/twaalgos/totgba.cc: Work on Streett-like.
* tests/Makefile.am, tests/python/streett_totgba.py: Tests the
  modification.
* tests/core/remfin.test: Fix one test case that is now handled by
  the modification.

* NEWS: Mention this.
* bin/autfilt.cc: Add option --simplify-acceptance.

Simplify some automata where some marks are identical,
or complementary to another. Fixes #216.

* NEWS: mention the new function.
* spot/twaalgos/cleanacc.cc, spot/twaalgos/cleanacc.hh: Implement
  the function.
* tests/Makefile.am, tests/python/merge.py: Test this implementation.

Alexandre Duret-Lutz authored Apr 07, 2017 and Thomas Medioni committed Jun 08, 2017

also consider sets that appear everywhere

* spot/twaalgos/cleanacc.cc, spot/twaalgos/cleanacc.hh: Here.

Alexandre Duret-Lutz authored Apr 28, 2017 and Thomas Medioni committed Jun 08, 2017

Author: Alexandre Duret-Lutz.

* NEWS: mention the modification.
* spot/twa/acc.cc, spot/twa/acc.hh: Implement the removal.
* spot/twa/twa.hh: Allow directly setting a new acceptance condition.

Related to #208.

* spot/twaalgos/dot.cc: Fix missing definitions of universal nodes,
and inclusion of universal nodes inside of SCC when none of the
destination comes back to the SCC.
* tests/python/_altscc.ipynb: Adjust and add more test cases.
* tests/core/alternating.test, tests/core/neverclaimread.test,
tests/core/readsave.test, tests/core/sccdot.test,
tests/python/decompose.ipynb: Adjust test cases.
* NEWS: Mention the bug.

Related to #208.

* spot/twaalgos/dot.cc: Fix missing definitions of universal nodes,
and inclusion of universal nodes inside of SCC when none of the
destination comes back to the SCC.
* tests/python/_altscc.ipynb: Adjust and add more test cases.
* tests/core/alternating.test, tests/core/neverclaimread.test,
tests/core/readsave.test, tests/core/sccdot.test,
tests/python/decompose.ipynb: Adjust test cases.
* NEWS: Mention the bug.

* spot/twaalgos/sccinfo.hh, spot/twaalgos/sccinfo.cc: Do it.
* tests/core/sccdot.test: Add a test case.
* NEWS: Mention it.

* NEWS: Document this.
* spot/twa/twagraph.cc: `copy_state_names_from` handles this new info.
* spot/twaalgos/degen.hh, spot/twaalgos/degen.cc: Implement it.
* tests/python/origstate.py, tests/python/simstate.py: Update tests to
  reflect the change.

* NEWS: Document the change.
* spot/twaalgos/simulation.cc: Implement the change.
* spot/twa/twagraph.cc: `copy_state_names_from` uses simulated states
  info if present.
* spot/twaalgos/determinize.cc: Pretty-print in determinization follows
  simulated states, avoiding possible confusion.
* tests/Makefile.am, tests/python/simstate.py: Add a test.

* spot/twaalgos/sccinfo.hh, spot/twaalgos/sccinfo.cc: Take
a filter function as optional argument.
* tests/core/sccif.cc, tests/core/sccif.test: New files.
* tests/Makefile.am, tests/core/.gitignore: Adjust.
* NEWS: Mention the new feature.

Fixes #262, reported by Maximilien Colange.

* bin/common_output.cc, bin/common_aoutput.cc, bin/common_aoutput.hh:
Clear the set of atomic propositions if --stats=%[...]x was used.
* spot/twa/bdddict.cc: Release any formula associated to a BDD when it
is unregistered, do not wait for the dictionary's destruction.  This
was the main culprit for #262.
* tests/core/ltl2tgba.test: Add test cases.
* NEWS: Mention the bug.

Fixes #262, reported by Maximilien Colange.

* bin/common_output.cc, bin/common_aoutput.cc, bin/common_aoutput.hh:
Clear the set of atomic propositions if --stats=%[...]x was used.
* spot/twa/bdddict.cc: Release any formula associated to a BDD when it
is unregistered, do not wait for the dictionary's destruction.  This
was the main culprit for #262.
* tests/core/ltl2tgba.test: Add test cases.
* NEWS: Mention the bug.

* NEWS, configure.ac, doc/org/setup.org: Update version to 2.3.4.

The cache used in formula simplification will keep atomic propositions
defined between several translations, and may impact variable order.
Reported by Maximilien Colange.

* spot/tl/simplify.hh, spot/tl/simplify.cc,
spot/twaalgos/translate.cc, spot/twaalgos/translate.hh (clear_cache):
New method.
* bin/ltl2tgba.cc, bin/ltl2tgta.cc: Call it.
* spot/twaalgos/stats.cc: Do not keep a point to the formula after
printing statistics.
* tests/core/ltl2tgba.test: Add a test case.
* tests/core/readsave.test: Adjust one formula.
* NEWS: Mention the issue.

The cache used in formula simplification will keep atomic propositions
defined between several translations, and may impact variable order.
Reported by Maximilien Colange.

* spot/tl/simplify.hh, spot/tl/simplify.cc,
spot/twaalgos/translate.cc, spot/twaalgos/translate.hh (clear_cache):
New method.
* bin/ltl2tgba.cc, bin/ltl2tgta.cc: Call it.
* spot/twaalgos/stats.cc: Do not keep a point to the formula after
printing statistics.
* tests/core/ltl2tgba.test: Add a test case.
* tests/core/readsave.test: Adjust one formula.
* NEWS: Mention the issue.

This is motivated by some upcoming patch by Heňo.

* spot/twaalgos/sccinfo.hh (edges_of, inner_edges_of): New methods.
* spot/twaalgos/sccinfo.cc, spot/twaalgos/strength.cc: Use them.
* spot/twa/twagraph.hh (edge_number): Add an overload.
* python/spot/impl.i: Bind the new methods.
* tests/python/sccinfo.py: Add tests.
* NEWS: Mention the changes.

Fixes #260.  Reported by František Blahoudek.

The simplification F(f)|q = F(f|q), where q designates an event_univ
formula, was not always applied because of a couple of issue: (1) the
mospliter was ignoring event_univ unless favor_event_univ was set, (2)
when processing formulas from res_EventUniv they were not put back
into res_F or res_G to be subject to the F/G rules.

* spot/tl/simplify.cc: Improve handling of the above points.
* tests/core/reduccmp.test: Adjust and add test case.
* tests/core/ltl2tgba2.test, tests/python/atva16-fig2a.ipynb: Adjust.

Fixes #260.  Reported by František Blahoudek.

The simplification F(f)|q = F(f|q), where q designates an event_univ
formula, was not always applied because of a couple of issue: (1) the
mospliter was ignoring event_univ unless favor_event_univ was set, (2)
when processing formulas from res_EventUniv they were not put back
into res_F or res_G to be subject to the F/G rules.

* spot/tl/simplify.cc: Improve handling of the above points.
* tests/core/reduccmp.test: Adjust and add test case.
* tests/core/ltl2tgba2.test, tests/python/atva16-fig2a.ipynb: Adjust.

Fixes #255.

* spot/twaalgos/split.cc, spot/twaalgos/split.hh,
tests/core/split.test: New files.
* spot/twaalgos/Makefile.am, tests/Makefile.am: Add them.
* bin/autfilt.cc (--split-edges): New option.
* python/spot/impl.i: Process split.hh.
* tests/python/alternating.py: Test split_edges() on
an alternating automaton.

Fixes #257.

* spot/twaalgos/degen.cc: Implement this optimization.
* tests/core/degendet.test: Add a few test cases.
* tests/core/ltl2tgba2.test: Adjust expected sizes.
* NEWS: Mention the change.

* spot/twa/twagraph.cc, spot/twa/twagraph.hh: Here.  Also
make sure "original-states" survives defrag_states().
* NEWS: Mention it.
* tests/python/origstate.py: New file.
* tests/Makefile.am: Add it.

Fixes #259.

* bin/common_setup.cc: Register a cleanup_tmpfiles() via atexit.
* tests/core/ltldo.test: Add a test case.
* NEWS: Mention the bug.

Fixes #259.

* bin/common_setup.cc: Register a cleanup_tmpfiles() via atexit.
* tests/core/ltldo.test: Add a test case.
* NEWS: Mention the bug.

* spot/gen/automata.hh, spot/gen/automata.cc,
bin/genaut.cc: Introduce L_DSA.
* tests/core/genaut.test: Add quick test.

* spot/gen/automata.cc, spot/gen/automata.hh: Define AUT_L_NBA.
* bin/genaut.cc (--l-nba): New option.
* bin/man/genaut.x, doc/org/genaut.org, NEWS: Document it.
* tests/python/gen.py, tests/core/genaut.test: Test it.