SortedMap<Integer, SortedSet<Integer>> map =
new TreeMap<Integer, SortedSet<Integer>>();
SortedSet<Integer> allLines = new TreeSet<Integer>();
for (Attribute a: attr.attributes) {
if (a instanceof LineNumberTable_attribute) {
LineNumberTable_attribute t = (LineNumberTable_attribute) a;
for (LineNumberTable_attribute.Entry e: t.line_number_table) {
int start_pc = e.start_pc;
int line = e.line_number;
SortedSet<Integer> pcLines = map.get(start_pc);
if (pcLines == null) {