#include "xbt/automaton.h"
#include "xbt/dynar.h"
-#define STD_HEAP_SIZE (50*1024*1024) /* Maximum size of the system's heap */
+/* Maximum size of the application heap.
+ *
+ * The model-checker heap is placed at this offset from the
+ * beginning of the application heap.
+ *
+ * In the current implementation, if the application uses more
+ * than this for the application heap the application heap will
+ * smash the beginning of the model-checker heap and bad things
+ * will happen.
+ *
+ * For 64 bits systems, we have a lot of virtual memory available
+ * so we wan use a much bigger value in order to avoid bad things
+ * from happening.
+ * */
+
+#define STD_HEAP_SIZE (sizeof(void*)<=4 ? (100*1024*1024) : (1ll*1024*1024*1024*1024))
SG_BEGIN_DECL()
