Program: 173330
Project: 173330
Buggy source:
public boolean modifyCalculator(RevenueAdapter revenueAdapter){
  Phase phase=revenueAdapter.getPhase();
  int bonusValue;
  if (phase.isTileColourAllowed(TileColour.GREY.name())) {
    bonusValue=30;
  }
 else   if (phase.isTileColourAllowed(TileColour.BROWN.name())) {
    bonusValue=20;
  }
 else   if (phase.isTileColourAllowed(TileColour.GREEN.name())) {
    bonusValue=10;
  }
 else {
    return false;
  }
  log.info("String_Node_Str" + bonusValue);
  Set<NetworkVertex> offBoard=new HashSet<NetworkVertex>();
  for (  NetworkVertex vertex : revenueAdapter.getVertices()) {
    if (vertex.isStation() && vertex.getStation().getType() == Station.Type.OFFMAPCITY) {
      offBoard.add(vertex);
    }
  }
  NetworkVertex hamburgCity=NetworkVertex.getVertexByIdentifier(revenueAdapter.getVertices(),"String_Node_Str");
  if (hamburgCity != null) {
    NetworkVertex hamburgTerminal=NetworkVertex.duplicateVertex(revenueAdapter.getGraph(),hamburgCity,"String_Node_Str",true);
    hamburgTerminal.setSink(true);
    offBoard.add(hamburgTerminal);
    offBoard.remove(hamburgCity);
    VertexVisit hamburgSet=revenueAdapter.new VertexVisit();
    hamburgSet.set.add(hamburgCity);
    hamburgSet.set.add(hamburgTerminal);
    revenueAdapter.addVertexVisitSet(hamburgSet);
  }
  log.info("String_Node_Str" + offBoard);
  Set<NetworkVertex> bases=revenueAdapter.getStartVertices();
  Set<NetworkVertex> destOffBoard=new HashSet<NetworkVertex>(offBoard);
  for (  NetworkVertex offA : offBoard) {
    destOffBoard.remove(offA);
    for (    NetworkVertex offB : destOffBoard) {
      for (      NetworkVertex base : bases) {
        RevenueBonus bonus=new RevenueBonus(bonusValue,"String_Node_Str");
        bonus.addVertex(offA);
        bonus.addVertex(offB);
        bonus.addVertex(base);
        revenueAdapter.addRevenueBonus(bonus);
      }
    }
  }
  return false;
}

Fixed version (ground truth):
public boolean modifyCalculator(RevenueAdapter revenueAdapter){
  Phase phase=revenueAdapter.getPhase();
  int bonusValue;
  if (phase.isTileColourAllowed(TileColour.GREY.toText())) {
    bonusValue=30;
  }
 else   if (phase.isTileColourAllowed(TileColour.BROWN.toText())) {
    bonusValue=20;
  }
 else   if (phase.isTileColourAllowed(TileColour.GREEN.toText())) {
    bonusValue=10;
  }
 else {
    return false;
  }
  log.info("String_Node_Str" + bonusValue);
  Set<NetworkVertex> offBoard=new HashSet<NetworkVertex>();
  for (  NetworkVertex vertex : revenueAdapter.getVertices()) {
    if (vertex.isStation() && vertex.getStation().getType() == Station.Type.OFFMAPCITY) {
      offBoard.add(vertex);
    }
  }
  NetworkVertex hamburgCity=NetworkVertex.getVertexByIdentifier(revenueAdapter.getVertices(),"String_Node_Str");
  if (hamburgCity != null) {
    NetworkVertex hamburgTerminal=NetworkVertex.duplicateVertex(revenueAdapter.getGraph(),hamburgCity,"String_Node_Str",true);
    hamburgTerminal.setSink(true);
    offBoard.add(hamburgTerminal);
    offBoard.remove(hamburgCity);
    VertexVisit hamburgSet=revenueAdapter.new VertexVisit();
    hamburgSet.set.add(hamburgCity);
    hamburgSet.set.add(hamburgTerminal);
    revenueAdapter.addVertexVisitSet(hamburgSet);
  }
  log.info("String_Node_Str" + offBoard);
  Set<NetworkVertex> bases=revenueAdapter.getStartVertices();
  Set<NetworkVertex> destOffBoard=new HashSet<NetworkVertex>(offBoard);
  for (  NetworkVertex offA : offBoard) {
    destOffBoard.remove(offA);
    for (    NetworkVertex offB : destOffBoard) {
      for (      NetworkVertex base : bases) {
        RevenueBonus bonus=new RevenueBonus(bonusValue,"String_Node_Str");
        bonus.addVertex(offA);
        bonus.addVertex(offB);
        bonus.addVertex(base);
        revenueAdapter.addRevenueBonus(bonus);
      }
    }
  }
  return false;
}