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complete: merge edges going to the sink

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* spot/twaalgos/complete.cc: Here.
* tests/python/dualize.py, tests/core/complete.test: Adjust test cases.
This commit is contained in:
Alexandre Duret-Lutz 2017-07-24 16:36:25 +02:00
parent 37f3154f1d
commit 1e9daa73f3
3 changed files with 24 additions and 18 deletions
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16
spot/twaalgos/complete.cc
View file

@ -108,6 +108,7 @@ namespace spot
{ {
bdd missingcond = bddtrue; bdd missingcond = bddtrue;
acc_cond::mark_t acc = 0U; acc_cond::mark_t acc = 0U;
unsigned edge_to_sink = 0;
for (auto& t: aut->out(i)) for (auto& t: aut->out(i))
{ {
missingcond -= t.cond; missingcond -= t.cond;
@ -125,6 +126,8 @@ namespace spot
// acceptance sets as the last outgoing edge of the // acceptance sets as the last outgoing edge of the
// state. // state.
acc = t.acc; acc = t.acc;
if (t.dst == sink)
edge_to_sink = aut->edge_number(t);
} }
// If the state has incomplete successors, we need to add a // If the state has incomplete successors, we need to add a
// edge to some sink state. // edge to some sink state.
@ -136,13 +139,22 @@ namespace spot
sink = aut->new_state(); sink = aut->new_state();
aut->new_edge(sink, sink, bddtrue, um.second); aut->new_edge(sink, sink, bddtrue, um.second);
} }
// In case the automaton use state-based acceptance, propagate // If we already have a brother-edge to the sink,
// add the missing condition to that edge.
if (edge_to_sink)
{
aut->edge_data(edge_to_sink).cond |= missingcond;
}
else // otherwise, create the new edge.
{
// in case the automaton use state-based acceptance, propagate
// the acceptance of the first edge to the one we add. // the acceptance of the first edge to the one we add.
if (aut->prop_state_acc() != true) if (!aut->prop_state_acc().is_true())
acc = 0U; acc = 0U;
aut->new_edge(i, sink, missingcond, acc); aut->new_edge(i, sink, missingcond, acc);
} }
} }
}
aut->prop_complete(true); aut->prop_complete(true);
// Get rid of any named property if the automaton changed. // Get rid of any named property if the automaton changed.

14
tests/core/complete.test
View file

@ -1,6 +1,6 @@
#! /bin/sh #! /bin/sh
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# Copyright (C) 2015, 2016 Laboratoire de Recherche et Développement # Copyright (C) 2015-2017 Laboratoire de Recherche et Développement
# de l'Epita (LRDE). # de l'Epita (LRDE).
# #
# This file is part of Spot, a model checking library. # This file is part of Spot, a model checking library.
@ -152,11 +152,9 @@ properties: trans-labels explicit-labels state-acc complete
properties: deterministic properties: deterministic
--BODY-- --BODY--
State: 0 State: 0
[0] 1 [t] 1
[!0] 1
State: 1 State: 1
[0] 1 [t] 1
[!0] 1
--END-- --END--
HOA: v1 HOA: v1
States: 3 States: 3
@ -186,8 +184,7 @@ properties: trans-labels explicit-labels state-acc complete
properties: deterministic properties: deterministic
--BODY-- --BODY--
State: 0 State: 0
[0] 1 [t] 1
[!0] 1
State: 1 {0} State: 1 {0}
[0] 1 [0] 1
[!0] 1 [!0] 1
@ -205,8 +202,7 @@ State: 0
[!0 | 1] 0 [!0 | 1] 0
[0&!1] 0&1 [0&!1] 0&1
State: 1 {0} State: 1 {0}
[0&!1] 1 [t] 1
[!0 | 1] 1
--END-- --END--
HOA: v1 HOA: v1
States: 2 States: 2

6
tests/python/dualize.py
View file

@ -408,13 +408,11 @@ properties: deterministic
--BODY-- --BODY--
State: 0 State: 0
[0&1] 1 [0&1] 1
[0&!1] 2 [!0 | !1] 2
[!0] 2
State: 1 {0} State: 1 {0}
[t] 1 [t] 1
State: 2 State: 2
[0] 2 [t] 2
[!0] 2
--END--""" --END--"""
aut = spot.automaton(""" aut = spot.automaton("""