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complete: add support for alternating autamata

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* spot/twaalgos/complete.cc: Do not use the initial
state as a sink if it is universal.
* tests/core/complete.test: Add a test case.
This commit is contained in:
Alexandre Duret-Lutz 2016-12-24 18:32:21 +01:00
parent f1b8d5f1d4
commit 071d819c49
2 changed files with 56 additions and 4 deletions
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9
spot/twaalgos/complete.cc
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@ -49,7 +49,7 @@ namespace spot
{
bool sinkable = true;
bool first = true;
acc_cond::mark_t commonacc = 0U;
acc_cond::mark_t commonacc = um.second;
for (auto& t: aut->out(i))
{
if (t.dst != i) // Not a self-loop
@ -80,11 +80,12 @@ namespace spot
unsigned t = aut->num_edges();
// If the automaton is empty, pretend that state 0 is a sink.
if (t == 0)
// If the automaton is empty, and the initial state is not
// universal, pretend this is the sink.
if (t == 0 && !aut->is_univ_dest(aut->get_init_state_number()))
sink = aut->get_init_state_number();
// Now complete all states (excluding any newly added the sink).
// Now complete all states (excluding any newly added sink).
for (unsigned i = 0; i < n; ++i)
{
bdd missingcond = bddtrue;