Program: 84235
Project: 84235
Buggy source:
private DatabaseConnection openConnection(final String url) throws Exception {
  if (connectionsAttempted.containsKey(url)) {
    return connectionsByUrl.get(url);
  }
  connectionsAttempted.put(url,Boolean.TRUE);
  if (System.getProperty("String_Node_Str") != null) {
    boolean shouldTest=false;
    String[] databasesToTest=System.getProperty("String_Node_Str").split("String_Node_Str");
    for (    String database : databasesToTest) {
      if (url.indexOf(database) >= 0) {
        shouldTest=true;
      }
    }
    if (!shouldTest) {
      System.out.println("String_Node_Str" + url);
      return null;
    }
  }
  String username=getUsername(url);
  String password=getPassword(url);
  JUnitJDBCDriverClassLoader jdbcDriverLoader=JUnitJDBCDriverClassLoader.getInstance();
  final Driver driver=(Driver)Class.forName(DatabaseFactory.getInstance().findDefaultDriver(url),true,jdbcDriverLoader).newInstance();
  Properties info=new Properties();
  info.put("String_Node_Str",username);
  if (password != null) {
    info.put("String_Node_Str",password);
  }
  final Connection connection;
  try {
    connection=driver.connect(url,info);
  }
 catch (  SQLException e) {
    System.out.println("String_Node_Str" + url + "String_Node_Str");
    return null;
  }
  if (connection == null) {
    throw new JDBCException("String_Node_Str" + url + "String_Node_Str"+ driver.getClass().getName()+ "String_Node_Str");
  }
  connection.setAutoCommit(false);
  try {
    if (url.startsWith("String_Node_Str")) {
      connection.createStatement().execute("String_Node_Str" + ALT_SCHEMA + "String_Node_Str");
    }
 else     if (url.startsWith("String_Node_Str") || url.startsWith("String_Node_Str") || url.startsWith("String_Node_Str")) {
      connection.createStatement().execute("String_Node_Str" + ALT_SCHEMA);
    }
    if (!connection.getAutoCommit()) {
      connection.commit();
    }
  }
 catch (  SQLException e) {
    ;
  }
  Database availableDatabase=DatabaseFactory.getInstance().findCorrectDatabaseImplementation(connection);
  DatabaseConnection databaseConnection=availableDatabase.getConnection();
  connectionsByUrl.put(url,databaseConnection);
  Runtime.getRuntime().addShutdownHook(new Thread(new Runnable(){
    public void run(){
      try {
        try {
          if (!connection.getAutoCommit()) {
            connection.rollback();
          }
        }
 catch (        SQLException e) {
          ;
        }
        connection.close();
      }
 catch (      SQLException e) {
        System.out.println("String_Node_Str" + url);
        e.printStackTrace();
      }
    }
  }
));
  return databaseConnection;
}

Fixed version (ground truth):
private DatabaseConnection openConnection(final String url) throws Exception {
  if (connectionsAttempted.containsKey(url)) {
    return connectionsByUrl.get(url);
  }
  connectionsAttempted.put(url,Boolean.TRUE);
  if (System.getProperty("String_Node_Str") != null) {
    boolean shouldTest=false;
    String[] databasesToTest=System.getProperty("String_Node_Str").split("String_Node_Str");
    for (    String database : databasesToTest) {
      if (url.indexOf(database) >= 0) {
        shouldTest=true;
      }
    }
    if (!shouldTest) {
      System.out.println("String_Node_Str" + url);
      return null;
    }
  }
  String username=getUsername(url);
  String password=getPassword(url);
  JUnitJDBCDriverClassLoader jdbcDriverLoader=JUnitJDBCDriverClassLoader.getInstance();
  final Driver driver=(Driver)Class.forName(DatabaseFactory.getInstance().findDefaultDriver(url),true,jdbcDriverLoader).newInstance();
  Properties info=new Properties();
  info.put("String_Node_Str",username);
  if (password != null) {
    info.put("String_Node_Str",password);
  }
  Connection connection;
  try {
    connection=driver.connect(url,info);
  }
 catch (  SQLException e) {
    System.out.println("String_Node_Str" + url + "String_Node_Str");
    return null;
  }
  if (connection == null) {
    throw new JDBCException("String_Node_Str" + url + "String_Node_Str"+ driver.getClass().getName()+ "String_Node_Str");
  }
  Database database=DatabaseFactory.getInstance().findCorrectDatabaseImplementation(connection);
  final DatabaseConnection databaseConnection=database.getConnection();
  databaseConnection.setAutoCommit(false);
  try {
    if (url.startsWith("String_Node_Str")) {
      databaseConnection.createStatement().execute("String_Node_Str" + ALT_SCHEMA + "String_Node_Str");
    }
 else     if (url.startsWith("String_Node_Str") || url.startsWith("String_Node_Str") || url.startsWith("String_Node_Str")) {
      databaseConnection.createStatement().execute("String_Node_Str" + ALT_SCHEMA);
    }
    if (!databaseConnection.getAutoCommit()) {
      databaseConnection.commit();
    }
  }
 catch (  SQLException e) {
    ;
  }
  connectionsByUrl.put(url,databaseConnection);
  Runtime.getRuntime().addShutdownHook(new Thread(new Runnable(){
    public void run(){
      try {
        try {
          if (!databaseConnection.getAutoCommit()) {
            databaseConnection.rollback();
          }
        }
 catch (        SQLException e) {
          ;
        }
        databaseConnection.close();
      }
 catch (      SQLException e) {
        System.out.println("String_Node_Str" + url);
        e.printStackTrace();
      }
    }
  }
));
  return databaseConnection;
}