protected void storeState(){
  System.arraycopy(intervals,0,storedIntervals,0,intervals.length);
  System.arraycopy(lineageCounts,0,storedLineageCounts,0,lineageCounts.length);
  storedIntervalsKnown=intervalsKnown;
  storedIntervalCount=intervalCount;
  storedLikelihoodKnown=likelihoodKnown;
  storedLogLikelihood=logLikelihood;
}

protected void storeState ( ) { System . arraycopy ( intervals , 0 , storedIntervals , 0 , intervals . length ) ; System . arraycopy ( lineageCounts , 0 , storedLineageCounts , 0 , lineageCounts . length ) ; storedIntervalsKnown = intervalsKnown ; storedIntervalCount = intervalCount ; storedLikelihoodKnown = likelihoodKnown ; storedLogLikelihood = logLikelihood ; }
stores the precalculated state : in this case the intervals
