improve fuse_marks_here by detecting more patterns

This remove some restrictions that prevented fuse_marks_here from
simplifying certain patterns, as noted in the first comment of
issue #405.

* spot/twaalgos/cleanacc.cc (find_interm_rec, find_fusable): Remove
some unnecessary restrictions to singleton marks, and replace the hack
put one non-singleton mark at the beginning of the singleton list by a
sort.
* tests/python/simplacc.py: Add two test cases.
* tests/python/automata.ipynb, tests/core/remfin.test: Improve
expected results.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2020-05-22 16:09:26 +02:00
parent ce695e67f9
commit c005041e53
5 changed files with 87 additions and 70 deletions

View file

@ -50,6 +50,16 @@ State: 5 [!0&1] 4 {3 5} [!0&1] 3 {2 4} [!0&1] 2 {2 3} [!0&!1] 0 {0}
[!0&1] 7 {0 4 5} [0&1] 5 {2} State: 6 [0&!1] 7 [0&!1] 1 {1 4} [0&1]
4 {1 4} State: 7 [0&1] 3 {2 3} [0&1] 0 [!0&!1] 6 [0&1] 1 State: 8 [0&1]
3 [!0&!1] 0 [0&1] 9 State: 9 [0&!1] 7 {4 5} [!0&1] 8 {0} [0&1] 9 --END--
/* Derived from issue #405. */
HOA: v1 States: 2 Start: 0 AP: 2 "p0" "p1" Acceptance: 4 Fin(0) &
(Fin(1)|Fin(2)|Fin(3)) properties: trans-labels explicit-labels trans-acc
--BODY-- State: 0 [!0&!1] 0 {0 1 3} [0&1] 1 {0 2} [0&!1] 0 {2} State:
1 [0&1] 0 {0 2} [0&1] 1 {1} [0&!1] 1 --END--
/* More complex version of the previous automaton */
HOA: v1 States: 2 Start: 0 AP: 2 "p0" "p1" Acceptance: 5 Fin(0) &
(((Fin(1)|Fin(2)|Fin(3))&Inf(4)|Fin(3))) properties: trans-labels
explicit-labels trans-acc --BODY-- State: 0 [!0&!1] 0 {0 1 3} [0&1] 1
{0 2} [0&!1] 0 {2} State: 1 [0&1] 0 {0 2} [0&1] 1 {1} [0&!1] 1 {4} --END--
"""))
res = []
@ -80,4 +90,8 @@ assert res == [
'((Inf(1) & Fin(2)) | Fin(5)) & (Inf(0) | (Inf(1) & (Inf(3) | Fin(4))))',
'Inf(0)',
'Fin(0)',
'Fin(0)|Fin(1)|Fin(2)',
'Inf(0)&Inf(1)&Inf(2)',
'((Fin(0)|Fin(1)) & Inf(3)) | Fin(2)',
'((Inf(0)&Inf(1)) | Fin(3)) & Inf(2)',
]