When something like XFa & FXa is reduced, the subformulae XFa and FXa
are both rewritten separately to XFa, and then the vector of arguments
of the And operators, [XFa,XFa], is passed through a specialized loop
that searches of the form X(...) that can potentially be simplified with
some other terms.  This loop converts the vector [XFa,XFa] into the set
{XFa,XFa}={XFa} and forgot to deal with the case where the insertion
would actually not add an existing subformula.

* src/ltlvisit/simplify.cc: Fix the code for Or, and And.
* src/ltltest/reduc0.test: New file, to test it.
* src/ltltest/Makefile.am (TESTS): Add it.
* src/ltltest/reduccmp.test: Add an extra test that does not
trigger the bug (because reduccmp.test uses more than basic
optimizations, and the implication-based simplifications are
already able to detect that XFa and FXa are equivalent).

* NEWS, configure.ac: Bump version.

* src/ltlvisit/simplify.hh (ltl_simplifier_options): add
a boolean_to_isop option
(ltl_simplifier::boolean_to_isop): New method.
* src/ltlvisit/simplify.cc: Implement these.
* src/bin/ltlfilt.cc: Add a --boolean-to-isop option.
* src/ltltest/isop.test: New file.
* src/ltltest/Makefile.am: Add it.
* NEWS: Mention it.

* wrap/python/ajax/spot.in (print_stats): Do not call
sub_stats_reachable on testing automata.

* src/tgbaalgos/postproc.hh (run): Rename the first argument as
input_disown to help Swig.
* wrap/python/spot.i: Wrap spot::postprocessor.
* wrap/python/ajax/ltl2tgba.html, wrap/python/ajax/protocol.txt:
Add an option for nondeterministic monitor.
* wrap/python/ajax/spot.in: Honor the new option, and rewrite the
monitor production using postprocessor.

* src/tgbatest/ltl2tgba.cc: Calling tgbatest/ltl2tgba -M -O (which
makes no sense, but that is no reason) used the "minimized" variable
for two automata, overwriting one.
* wrap/python/spot.i: The python bindings did not know about
sba_explicit automata, causing memory leaks, and complaints from the
bdd_dict.

* wrap/python/ajax/ltl2tgba.html: Do not display testing automaton
options when generating monitors.

Enable LTL simplifications by default for ltl2tgba & ltl2tgta, and make
sure the ltl_simplifier_options are all false initially.  Before this
patch --low/-r1 had the same effect as --medium/-r2 with respect to LTL
simplification.

* src/bin/ltl2tgba.cc, src/bin/ltl2tgta.cc (simplification_level): Set
to 3 by default.
* src/bin/common_r.cc: Disable all ltl_simplifier options initially.

This follows up on a mail from Sonali Dutta.

* src/tgba/bdddict.hh (assert_emptiness, ~bdd_dict): Better
documentation.
* src/tgba/formula2bdd.hh (formula_to_bdd): Mention
unregister_all_my_variables().
(bdd_to_formula): Complete the documentation.
* THANKS: Add Sonali Dutta.

* doc/tl/Makefile.am (LATEXMK): Add -pvc- to work around Etienne's
setup.

Thomas Badie authored Jan 28, 2013 and Alexandre Duret-Lutz committed Jan 31, 2013

* bench/ltl2tgba/defs.in (LTLFILT): Add this variable.
* bench/ltl2tgba/big, bench/ltl2tgba/small: Use $LTLFILT.
* bench/ltl2tgba/known: Add a missing '$srcdir'.

* NEWS, configure.ac: Bump version.

* src/tgbaalgos/cycles.hh: Fix comments.

* src/misc/formater.cc, src/misc/formater.hh (scan): New method.
(prime): Use it.
* src/bin/ltlcross.cc (translator_runner::translator_runner): Scan each
specification string, and report those missing an input or output
%-sequence.
* NEWS: Mention it.

* src/ltlparse/ltlscan.ll: Accept as a proposition any
alphanumeric string that is not an operator.
* NEWS: Mention it.
* src/ltltest/lbt.test: New file.  Also tests previous patch.
* src/ltltest/Makefile.am: Add it.

* NEWS: Mention it.
* src/ltlvisit/lbt.cc: Instead of outputting a space after each
node, output one before each node but the first one.

* src/ltltest/tostring.test, src/ltltest/parse.test: More tests.
* src/ltlvisit/tostring.cc (is_bare_word): Quote U, W, M, R.
* NEWS: Mention it.

* NEWS: Mention it.
* src/bin/ltlcross.cc: Always display the number of timeout
on normal termination.

* wrap/python/ajax/spot.in: Adjust display.
* NEWS: Mention it.

* src/tgbaalgos/scc.cc, src/tgbatest/ltl2tgba.cc: Remove assignments to
unread variables.

* src/eltltest/acc.test, src/tgbatest/eltl2tgba.test: Simplify use of
here documents, and also test for ltl2tgba's -lo option with valgrind.

* m4/gccwarn.m4: Use -Wdocumentation if supported.
* src/ltlast/binop.hh, src/ltlparse/public.hh, src/ta/taproduct.hh,
src/taalgos/emptinessta.hh, src/taalgos/reachiter.hh,
src/tgba/state.hh, src/tgba/tgbasafracomplement.cc,
src/tgbaalgos/ltl2tgba_fm.hh: Fix Doxygen documentations errors signaled
by clang++ 3.2.

* src/tgba/tgbakvcomplement.cc
(tgba_kv_complement_succ_iterator::current_state_),
src/ta/taexplicit.hh (state_ta_explicit::source_):
Remove useless private member.
* src/ta/taexplicit.cc: Adjust constructors.
* src/ta/tgta.cc, src/ta/taexplicit.hh: Also fix
copyright banner.
* src/bin/ltlcross.cc (exec_with_timeout): Work
around warning about status not being set in the
error path.

* iface/dve2/finite.test: Add test case.
* NEWS: Mention the fix.

Pierre PARUTTO authored Jan 14, 2013 and Alexandre Duret-Lutz committed Jan 14, 2013

* src/tgba/tgbaproduct.cc (transition_annotation): Adapt down cast to
new hierarchy.

GF(a|Xb) = GF(a|b)      GF(a|Fb) = GF(a|b)
FG(a&Xb) = FG(a&b)      FG(a&Gb) = FG(a&b)

* src/ltlvisit/simplify.cc: Implement them.
* NEWS, doc/tl/tl.tex: Document them.
* src/ltltest/reduccmp.test: Test then.

* src/tgbatest/ltl2neverclaim.test: Rename as...
* src/tgbatest/ltl2neverclaim-lbtt.test: ... this.
* src/tgbatest/ltl2neverclaim.test: New version, using ltlcross.
* src/tgbatest/Makefile.am: Add ltl2neverclaim-lbtt.test.

* configure.ac: Set link_all_deplibs to yes.