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Fix bugs in minimize(), caught by spotlbtt.test.

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* src/tgbaalgos/minimize.cc (minimize): Don't add acceptance
conditions if the final set is empty.
* src/tgbaalgos/powerset.cc (tgba_powerset): Add the initial state
to acc_list if it is accepting.  Also do not compute an SCC build
map if we don't have to build acc_list.
This commit is contained in:
Alexandre Duret-Lutz 2010-04-13 14:29:58 +02:00
parent 54e10c2501
commit 72139fd760
4 changed files with 27 additions and 8 deletions
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20
src/tgbaalgos/powerset.cc
View file

@ -1,4 +1,4 @@
// Copyright (C) 2009 Laboratoire de Recherche et Développement
// Copyright (C) 2009, 2010 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
// Copyright (C) 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
// département Systèmes Répartis Coopératifs (SRC), Université Pierre
@ -56,7 +56,12 @@ namespace spot
ps.insert(s);
todo.push_back(ps);
seen[ps] = 1;
m.build_map();
if (acc_list)
{
m.build_map();
if (m.accepting(m.scc_of_state(s)))
acc_list->push_front(new state_explicit(res->add_state(1)));
}
}
unsigned state_num = 1;
@ -99,9 +104,12 @@ namespace spot
{
states.insert(s);
}
unsigned scc_num = m.scc_of_state(s);
if (m.accepting(scc_num))
accepting = true;
if (acc_list)
{
unsigned scc_num = m.scc_of_state(s);
if (m.accepting(scc_num))
accepting = true;
}
dest.insert(s);
}
delete si;
@ -123,7 +131,7 @@ namespace spot
seen[dest] = dest_num;
todo.push_back(dest);
t = res->create_transition(seen[src], dest_num);
if (acc_list && accepting)
if (accepting)
{
const state* dst = new state_explicit(t->dest);
acc_list->push_front(dst);