Add more nodes when resizing BDD table.

* src/misc/bddalloc.cc (bdd_allocator::initialize): Call
bdd_setmaxincrease(500000), because the default is 50000,
which cause garbage collection to occur too often.

ChangeLog

+2011-11-13  Alexandre Duret-Lutz  <adl@lrde.epita.fr>
+
+	Add more nodes when resizing BDD table.
+
+	* src/misc/bddalloc.cc (bdd_allocator::initialize): Call
+	bdd_setmaxincrease(500000), because the default is 50000,
+	which cause garbage collection to occur too often.
+
 2011-11-28  Alexandre Duret-Lutz  <adl@lrde.epita.fr>
 
 	* NEWS: Mention the Kripke I/O.

src/misc/bddalloc.cc

-// Copyright (C) 2007 Laboratoire de Recherche et Dveloppement
+// Copyright (C) 2007, 2011 Laboratoire de Recherche et Dveloppement
 // de l'Epita (LRDE).
 // Copyright (C) 2003, 2004, 2006, 2007 Laboratoire d'Informatique de
 // Paris 6 (LIP6), dpartement Systmes Rpartis Coopratifs (SRC),
@@ -56,6 +56,8 @@ namespace spot
     // done if Buddy is initialized by Spot.  Otherwise we prefer not
     // to overwrite a handler that might have been set by the user.)
     bdd_gbc_hook(0);
+    // When the node time is full, add 500000 nodes, i.e., 10MB.
+    bdd_setmaxincrease(500000);
   }
 
   void