BFS without trace route

Signed-off-by: Fabio Teixeira <fabio1079@gmail.com>
Stop when END if found

Signed-off-by: Fabio Teixeira <fabio1079@gmail.com>
Trace BFS

Signed-off-by: Fabio Teixeira <fabio1079@gmail.com>
Clear memory

Signed-off-by: Fabio Teixeira <fabio1079@gmail.com>