Program: 173511
Project: 173511
Buggy source:
public void nextRound(Round round){
  if (round instanceof StartRound) {
    if (startPacket != null && !startPacket.areAllSold()) {
      startOperatingRound(false);
    }
 else     if (skipFirstStockRound) {
      Phase currentPhase=phaseManager.getCurrentPhase();
      if (currentPhase.getNumberOfOperatingRounds() != numOfORs.value()) {
        numOfORs.set(currentPhase.getNumberOfOperatingRounds());
      }
      log.info("String_Node_Str" + currentPhase.getName() + "String_Node_Str"+ numOfORs);
      relativeORNumber.set(1);
      startOperatingRound(true);
    }
 else {
      startStockRound();
    }
  }
 else   if (round instanceof StockRound) {
    Phase currentPhase=getCurrentPhase();
    if (currentPhase == null)     log.error("String_Node_Str",new Exception("String_Node_Str"));
    numOfORs.set(currentPhase.getNumberOfOperatingRounds());
    log.info("String_Node_Str" + currentPhase.getName() + "String_Node_Str"+ numOfORs);
    relativeORNumber.set(1);
    startOperatingRound(true);
  }
 else   if (round instanceof OperatingRound) {
    if (gameOverPending.value() && !gameEndsAfterSetOfORs) {
      finishGame();
    }
 else     if (relativeORNumber.add(1) <= numOfORs.value()) {
      startOperatingRound(true);
    }
 else     if (startPacket != null && !startPacket.areAllSold()) {
      startStartRound();
    }
 else {
      if (gameOverPending.value() && gameEndsAfterSetOfORs) {
        finishGame();
      }
 else {
        ((OperatingRound)round).checkForeignSales();
        startStockRound();
      }
    }
  }
}

Fixed version (ground truth):
public void nextRound(Round round){
  if (round instanceof StartRound) {
    if (startPacket != null && !startPacket.areAllSold()) {
      startOperatingRound(runIfStartPacketIsNotCompletelySold());
    }
 else     if (skipFirstStockRound) {
      Phase currentPhase=phaseManager.getCurrentPhase();
      if (currentPhase.getNumberOfOperatingRounds() != numOfORs.value()) {
        numOfORs.set(currentPhase.getNumberOfOperatingRounds());
      }
      log.info("String_Node_Str" + currentPhase.getName() + "String_Node_Str"+ numOfORs);
      relativeORNumber.set(1);
      startOperatingRound(true);
    }
 else {
      startStockRound();
    }
  }
 else   if (round instanceof StockRound) {
    Phase currentPhase=getCurrentPhase();
    if (currentPhase == null)     log.error("String_Node_Str",new Exception("String_Node_Str"));
    numOfORs.set(currentPhase.getNumberOfOperatingRounds());
    log.info("String_Node_Str" + currentPhase.getName() + "String_Node_Str"+ numOfORs);
    relativeORNumber.set(1);
    startOperatingRound(true);
  }
 else   if (round instanceof OperatingRound) {
    if (gameOverPending.value() && !gameEndsAfterSetOfORs) {
      finishGame();
    }
 else     if (relativeORNumber.add(1) <= numOfORs.value()) {
      startOperatingRound(true);
    }
 else     if (startPacket != null && !startPacket.areAllSold()) {
      startStartRound();
    }
 else {
      if (gameOverPending.value() && gameEndsAfterSetOfORs) {
        finishGame();
      }
 else {
        ((OperatingRound)round).checkForeignSales();
        startStockRound();
      }
    }
  }
}