svoid runProbabilisticForNSeconds(double seconds, IProbabilistic p) {
  if (p == null) ret;
  runProbabilisticForNSeconds(seconds, p.scheduler());
}

svoid runProbabilisticForNSeconds(double seconds, IProbabilisticScheduler ps) {
  if (ps == null) ret;
  Timeout timeout = new(seconds);
  long steps = 0;
  while (!timeout.reached()) {
    ++steps;
    if (!ps.step())
      break;
  }
  
  print(nSteps(steps) + " in " + format(timeout.elapsedSeconds(), 1) + " s, reached probability " + ps.,lastExecutedProbability());
}