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more doc handling of prop_universal for fused initial states

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Fixes #560.

* spot/parseaut/parseaut.yy: Add more comments about handling
of prop_universal in present of multiple initial states.  It took
me time to figure out that it was done correctly.  Also only
reset prop_complete() in the case an initial state is reused.
* tests/core/det.test: Add a test case for the deterministic property.
* tests/python/parsetgba.py: Add tests for complete.
* doc/org/hoa.org: Add more text about the effect of fusing initial
states.
* doc/org/concepts.org (properties): Replace "deterministic" by
"universal".  The former was obsoleted in Spot 2.4.
This commit is contained in:
Alexandre Duret-Lutz 2024-02-08 22:43:44 +01:00
parent a735c2b72d
commit a6f79c6211
5 changed files with 159 additions and 54 deletions
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31
tests/python/parsetgba.py
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@ -191,3 +191,34 @@ State: 3
[!0&2] 0
[!0&!2] 3
--END--""")
# Spot supports only one initial state, but the HOA format allows for
# more. Spot's automaton parser will fuse multiple initial states to
# fit into the Spot definition of an automaton. Depending on how the
# fusing is done, this can turn a complete automaton into a incomplete
# one, and vice-versa. See Issue #560.
a = spot.automaton("""HOA: v1 States: 8 Start: 0 Start: 1 AP: 0
acc-name: generalized-Buchi 2 properties: complete Acceptance: 2
Inf(0)&Inf(1) --BODY-- State: 0 {0} [t] 2 [t] 3 [t] 0 State: 1 {0} [t]
4 [t] 5 State: 2 {0} [t] 2 [t] 3 State: 3 {0} [t] 6 [t] 7 State: 4 {1}
[t] 4 [t] 5 State: 5 {1} [t] 6 [t] 7 State: 6 [t] 6 [t] 7 State: 7 [t]
6 [t] 7 --END--""")
tc.assertTrue(a.prop_complete().is_true())
a = spot.automaton("""HOA: v1 States: 8 Start: 0 Start: 1 AP: 0
acc-name: generalized-Buchi 2 properties: complete Acceptance: 2
Inf(0)&Inf(1) --BODY-- State: 0 {0} [t] 2 [t] 3 State: 1 {0} [t] 4 [t]
5 State: 2 {0} [t] 2 [t] 3 State: 3 {0} [t] 6 [t] 7 State: 4 {1} [t] 4
[t] 5 State: 5 {1} [t] 6 [t] 7 State: 6 [t] 6 [t] 7 State: 7 [t] 6 [t]
7 --END--""")
tc.assertTrue(a.prop_complete().is_false())
a = spot.automaton("""HOA: v1.1 States: 8 Start: 0 Start: 1 AP: 1 "a"
acc-name: generalized-Buchi 2 properties: !complete Acceptance: 2
Inf(0)&Inf(1) --BODY-- State: 0 {0} [0] 2 [0] 3 State: 1 {0} [t] 1 [t]
5 State: 2 {0} [t] 2 [t] 3 State: 3 {0} [t] 6 [t] 7 State: 4 {1} [t] 4
[t] 5 State: 5 {1} [t] 6 [t] 7 State: 6 [t] 6 [t] 7 State: 7 [t] 6 [t]
7 --END--""")
tc.assertTrue(a.prop_complete().is_maybe())
tc.assertTrue(spot.is_complete(a))