if (nodes[ip][i] == null || nodes[ip][i].alpha == Transducer.IMPOSSIBLE_WEIGHT)
// xxx if we end up doing this a lot,
// we could save a list of the non-null ones
continue;
State s = t.getState(i);
TransitionIterator iter = s.transitionIterator (input, ip, output, ip);
if (logger.isLoggable (Level.FINE))
logger.fine (" Starting Foward transition iteration from state "
+ s.getName() + " on input " + input.get(ip).toString()
+ " and output "
+ (output==null ? "(null)" : output.get(ip).toString()));