multi / single line regular expression infinite loop

//groovy version 1.6.2
//this script seems to go on an infinite loop in the last line 

def str = '''ID_843110_DATE
2008-08-26 02:53:25
ID_843110_SRC
This is a test
ID_843110_TRG
Aceasta este o incercare
'''

def id = 843110

def m = str =~ /(?s)^ID_($id)_DATE\n.*\nID_($id)_SRC\n(.*\n)+ID_($id)_TRG\n(.*\n)+/

m.each { println it }
 
m = str =~ /(?s)^ID_($id)_DATE\n.*\nID_($id)_SRC\n(.*)+ID_($id)_TRG\n(.*\n)+/

m.each{ println it }