Program: 45411
Project: 45411
Buggy source:
public void writeExcel(LandingZone landingZone,Sheet sh,Workbook wb){
  int i=0;
  for (  Clan clan : landingZone.getClanList()) {
    Map<Vehicle,TankPopulation> clanTankPopulation=new HashMap<Vehicle,TankPopulation>();
    Row clanRow=sh.createRow(i);
    Cell clanCell=clanRow.createCell(0);
    clanCell.setCellValue(clan.getName() + "String_Node_Str" + calculateLandingZoneNames(clan.getConcurrentBattles())+ "String_Node_Str");
    i++;
    for (    ClanMember clanMember : clan.getClanMembers()) {
      boolean topUsFound=false;
      boolean topGerFound=false;
      boolean topUssrFound=false;
      if (clanMember.getMemberTanks().isEmpty() == false) {
        Row memberRow=sh.createRow(i);
        Cell memberCell=memberRow.createCell(1);
        memberCell.setCellValue(clanMember.getName() + "String_Node_Str" + clanMember.getRole()+ "String_Node_Str");
        boolean firstTime=true;
        Collections.sort(clanMember.getMemberTanks());
        for (        MemberTank memberTank : clanMember.getMemberTanks()) {
          if (memberTank.getVehicle().getTier() >= 9 || (Clazz.SPG.equals(memberTank.getVehicle().getClazz())) && memberTank.getVehicle().getTier() >= 6) {
            TankPopulation tankPopulation=null;
            if ((Nation.US.equals(memberTank.getVehicle().getNation()) && topUsFound == false) || (Nation.GER.equals(memberTank.getVehicle().getNation()) && topGerFound == false) || (Nation.USSR.equals(memberTank.getVehicle().getNation()) && topUssrFound == false)) {
              tankPopulation=clanTankPopulation.get(memberTank.getVehicle());
              if (tankPopulation == null) {
                tankPopulation=new TankPopulation();
              }
              tankPopulation.setTopTank(tankPopulation.getTopTank() + 1);
              if (Nation.US.equals(memberTank.getVehicle().getNation())) {
                topUsFound=true;
              }
 else               if (Nation.GER.equals(memberTank.getVehicle().getNation())) {
                topGerFound=true;
              }
 else               if (Nation.USSR.equals(memberTank.getVehicle().getNation())) {
                topUssrFound=true;
              }
              clanTankPopulation.put(memberTank.getVehicle(),tankPopulation);
            }
 else {
              tankPopulation=clanTankPopulation.get(memberTank.getVehicle());
              if (tankPopulation == null) {
                tankPopulation=new TankPopulation();
              }
              tankPopulation.setAlternativeTank(tankPopulation.getAlternativeTank() + 1);
              clanTankPopulation.put(memberTank.getVehicle(),tankPopulation);
            }
          }
          if (firstTime == true) {
            CellStyle style=wb.createCellStyle();
            style.setFillBackgroundColor(IndexedColors.RED.getIndex());
            Cell tanksCell=memberRow.createCell(2);
            tanksCell.setCellValue(memberTank.getVehicle().getName());
            tanksCell.setCellStyle(style);
            Cell battlesCell=memberRow.createCell(3);
            battlesCell.setCellValue(memberTank.getBattles());
            Cell victoriesCell=memberRow.createCell(4);
            victoriesCell.setCellValue(memberTank.getVictories());
            Cell porcentCell=memberRow.createCell(5,Cell.CELL_TYPE_NUMERIC);
            Double vict=Double.valueOf(memberTank.getVictories().replaceAll("String_Node_Str","String_Node_Str"));
            Double batt=Double.valueOf(memberTank.getBattles().replaceAll("String_Node_Str","String_Node_Str"));
            double porcent=(vict.doubleValue() / batt.doubleValue()) * 100;
            porcentCell.setCellValue(porcent);
            firstTime=false;
          }
 else {
            Row extraTankRow=sh.createRow(i);
            Cell extraTankCell=extraTankRow.createCell(2);
            extraTankCell.setCellValue(memberTank.getVehicle().getName());
            Cell extrabattlesCell=extraTankRow.createCell(3);
            extrabattlesCell.setCellValue(memberTank.getBattles());
            Cell extravictoriesCell=extraTankRow.createCell(4);
            extravictoriesCell.setCellValue(memberTank.getVictories());
            Cell extraporcentCell=extraTankRow.createCell(5,Cell.CELL_TYPE_NUMERIC);
            Double vict=Double.valueOf(memberTank.getVictories().replaceAll("String_Node_Str","String_Node_Str"));
            Double batt=Double.valueOf(memberTank.getBattles().replaceAll("String_Node_Str","String_Node_Str"));
            double porcent=(vict.doubleValue() / batt.doubleValue()) * 100;
            extraporcentCell.setCellValue(porcent);
          }
          i++;
        }
        firstTime=true;
      }
    }
    if (clanTankPopulation.isEmpty() == false) {
      ArrayList<Vehicle> orderedList=new ArrayList<Vehicle>(INTERESTED_VEHICLES);
      Collections.sort(orderedList,new VehicleOrderComparator());
      i++;
      Row tankPopulationRow=sh.createRow(i);
      int y=1;
      for (      Vehicle vehicle : orderedList) {
        Cell tankPopulation=tankPopulationRow.createCell(y);
        if (clanTankPopulation.get(vehicle) != null) {
          tankPopulation.setCellValue(vehicle.getName() + "String_Node_Str" + clanTankPopulation.get(vehicle).getTopTank()+ (clanTankPopulation.get(vehicle).getAlternativeTank() != 0 ? "String_Node_Str" + clanTankPopulation.get(vehicle).getAlternativeTank() + "String_Node_Str" : "String_Node_Str"));
          y++;
        }
      }
      i++;
      i++;
    }
  }
}

Fixed version (ground truth):
public void writeExcel(LandingZone landingZone,Sheet sh,Workbook wb){
  int i=0;
  for (  Clan clan : landingZone.getClanList()) {
    Map<Vehicle,TankPopulation> clanTankPopulation=new HashMap<Vehicle,TankPopulation>();
    Row clanRow=sh.createRow(i);
    Cell clanCell=clanRow.createCell(0);
    clanCell.setCellValue(clan.getName() + "String_Node_Str" + calculateLandingZoneNames(clan.getConcurrentBattles())+ "String_Node_Str");
    i++;
    for (    ClanMember clanMember : clan.getClanMembers()) {
      boolean topUsFound=false;
      boolean topGerFound=false;
      boolean topUssrFound=false;
      if (clanMember.getMemberTanks().isEmpty() == false) {
        Row memberRow=sh.createRow(i);
        Cell memberCell=memberRow.createCell(1);
        memberCell.setCellValue(clanMember.getName() + "String_Node_Str" + clanMember.getRole()+ "String_Node_Str");
        boolean firstTime=true;
        Collections.sort(clanMember.getMemberTanks());
        for (        MemberTank memberTank : clanMember.getMemberTanks()) {
          if (memberTank.getVehicle().getTier() >= 8 || (Clazz.SPG.equals(memberTank.getVehicle().getClazz())) && memberTank.getVehicle().getTier() >= 6) {
            TankPopulation tankPopulation=null;
            if ((Nation.US.equals(memberTank.getVehicle().getNation()) && topUsFound == false) || (Nation.GER.equals(memberTank.getVehicle().getNation()) && topGerFound == false) || (Nation.USSR.equals(memberTank.getVehicle().getNation()) && topUssrFound == false)) {
              tankPopulation=clanTankPopulation.get(memberTank.getVehicle());
              if (tankPopulation == null) {
                tankPopulation=new TankPopulation();
              }
              tankPopulation.setTopTank(tankPopulation.getTopTank() + 1);
              if (Nation.US.equals(memberTank.getVehicle().getNation())) {
                topUsFound=true;
              }
 else               if (Nation.GER.equals(memberTank.getVehicle().getNation())) {
                topGerFound=true;
              }
 else               if (Nation.USSR.equals(memberTank.getVehicle().getNation())) {
                topUssrFound=true;
              }
              clanTankPopulation.put(memberTank.getVehicle(),tankPopulation);
            }
 else {
              tankPopulation=clanTankPopulation.get(memberTank.getVehicle());
              if (tankPopulation == null) {
                tankPopulation=new TankPopulation();
              }
              tankPopulation.setAlternativeTank(tankPopulation.getAlternativeTank() + 1);
              clanTankPopulation.put(memberTank.getVehicle(),tankPopulation);
            }
          }
          if (firstTime == true) {
            CellStyle style=wb.createCellStyle();
            style.setFillBackgroundColor(IndexedColors.RED.getIndex());
            Cell tanksCell=memberRow.createCell(2);
            tanksCell.setCellValue(memberTank.getVehicle().getName());
            tanksCell.setCellStyle(style);
            Cell battlesCell=memberRow.createCell(3);
            battlesCell.setCellValue(memberTank.getBattles());
            Cell victoriesCell=memberRow.createCell(4);
            victoriesCell.setCellValue(memberTank.getVictories());
            Cell porcentCell=memberRow.createCell(5,Cell.CELL_TYPE_NUMERIC);
            Double vict=Double.valueOf(memberTank.getVictories().replaceAll("String_Node_Str","String_Node_Str"));
            Double batt=Double.valueOf(memberTank.getBattles().replaceAll("String_Node_Str","String_Node_Str"));
            double porcent=(vict.doubleValue() / batt.doubleValue()) * 100;
            porcentCell.setCellValue(porcent);
            firstTime=false;
          }
 else {
            Row extraTankRow=sh.createRow(i);
            Cell extraTankCell=extraTankRow.createCell(2);
            extraTankCell.setCellValue(memberTank.getVehicle().getName());
            Cell extrabattlesCell=extraTankRow.createCell(3);
            extrabattlesCell.setCellValue(memberTank.getBattles());
            Cell extravictoriesCell=extraTankRow.createCell(4);
            extravictoriesCell.setCellValue(memberTank.getVictories());
            Cell extraporcentCell=extraTankRow.createCell(5,Cell.CELL_TYPE_NUMERIC);
            Double vict=Double.valueOf(memberTank.getVictories().replaceAll("String_Node_Str","String_Node_Str"));
            Double batt=Double.valueOf(memberTank.getBattles().replaceAll("String_Node_Str","String_Node_Str"));
            double percent=(vict.doubleValue() / batt.doubleValue()) * 100;
            extraporcentCell.setCellValue(percent);
          }
          i++;
        }
        firstTime=true;
      }
    }
    if (clanTankPopulation.isEmpty() == false) {
      ArrayList<Vehicle> orderedList=new ArrayList<Vehicle>(INTERESTED_VEHICLES);
      Collections.sort(orderedList,new VehicleOrderComparator());
      i++;
      Row tankPopulationRow=sh.createRow(i);
      int y=1;
      for (      Vehicle vehicle : orderedList) {
        Cell tankPopulation=tankPopulationRow.createCell(y);
        if (clanTankPopulation.get(vehicle) != null) {
          tankPopulation.setCellValue(vehicle.getName() + "String_Node_Str" + clanTankPopulation.get(vehicle).getTopTank()+ (clanTankPopulation.get(vehicle).getAlternativeTank() != 0 ? "String_Node_Str" + clanTankPopulation.get(vehicle).getAlternativeTank() + "String_Node_Str" : "String_Node_Str"));
          y++;
        }
      }
      i++;
      i++;
    }
  }
}