translate, simplify: limit containment checks of n-ary operators

Fixes #521.

* spot/tl/simplify.cc, spot/tl/simplify.hh,
spot/twaalgos/translate.cc, spot/twaalgos/translate.hh: Add an option
to limit automata-based implication checks of n-ary operators when too
many operands are used.  Defaults to 16.
* bin/spot-x.cc, NEWS, doc/tl/tl.tex: Document it.
* tests/core/bdd.test: Disable the limit for this test.
This commit is contained in:
Alexandre Duret-Lutz 2022-11-15 17:27:10 +01:00
parent f2c65ea557
commit 843c4cdb91
8 changed files with 33 additions and 11 deletions

View file

@ -24,20 +24,21 @@ set -e
# Make sure that setting the SPOT_BDD_TRACE envvar actually does
# something.
genltl --kr-n=3 |
SPOT_BDD_TRACE=1 ltl2tgba -x tls-max-states=0 -D >out 2>err
SPOT_BDD_TRACE=1 ltl2tgba -x tls-max-states=0,tls-max-ops=0 -D >out 2>err
cat err
grep spot: out && exit 1
grep 'spot: BDD package initialized' err
# This value below, which is the number of time we need to garbage
# collect might change if we improve the tool or change the way BuDDy
# is initialized.
test 2 = `grep -c 'spot: BDD GC' err`
test 15 = `grep -c 'spot: BDD GC' err`
# Minimal size for this automaton.
# See also https://www.lrde.epita.fr/dload/spot/mochart10-fixes.pdf
test "2240,4214" = `autfilt --stats=%s,%e out`
# With the default value of tls-max-states, no GC is needed
genltl --kr-n=3 | SPOT_BDD_TRACE=1 ltl2tgba -D --stats=%s,%e >out 2>err
genltl --kr-n=3 |
SPOT_BDD_TRACE=1 ltl2tgba -D -x tls-max-ops=0 --stats=%s,%e >out 2>err
cat err
grep 'spot: BDD package initialized' err
test 0 = `grep -c 'spot: BDD GC' err`