if((ret = lttv_traceset_position_compare(currentPos,initialPos)) == 1){
bt_iter_next(bt_ctf_get_iter(ts->iter));
lttv_traceset_destroy_position(currentPos);
if((ret = lttv_traceset_position_compare(currentPos,initialPos)) == 1){
bt_iter_next(bt_ctf_get_iter(ts->iter));
lttv_traceset_destroy_position(currentPos);