Program: 30034
Project: 30034
Buggy source:
@Override public void configure(final Habitat habitat,final NetworkListener networkListener,final Http http){
  final boolean jkSupportEnabled=http.getJkEnabled() != null ? Boolean.parseBoolean(http.getJkEnabled()) : Boolean.parseBoolean(networkListener.getJkEnabled());
  if (jkSupportEnabled) {
    final String jkPropertiesFilename=Boolean.parseBoolean(http.getJkEnabled()) ? http.getJkConfigurationFile() : networkListener.getJkConfigurationFile();
    File propertiesFile=null;
    if (jkPropertiesFilename != null) {
      propertiesFile=new File(jkPropertiesFilename);
    }
    final String systemPropertyFilename=System.getProperty("String_Node_Str");
    if ((propertiesFile == null || (propertiesFile != null && !propertiesFile.exists())) && systemPropertyFilename != null) {
      propertiesFile=new File(systemPropertyFilename);
    }
    if (propertiesFile == null) {
      if (_logger.isLoggable(Level.FINEST)) {
        _logger.finest("String_Node_Str");
      }
      return;
    }
    if (!propertiesFile.exists()) {
      if (_logger.isLoggable(Level.FINEST)) {
        _logger.log(Level.FINEST,"String_Node_Str",propertiesFile.getAbsoluteFile());
      }
      return;
    }
    if (_logger.isLoggable(Level.FINEST)) {
      _logger.log(Level.FINEST,"String_Node_Str",propertiesFile.getAbsolutePath());
    }
    Properties properties=null;
    InputStream is=null;
    try {
      is=new BufferedInputStream(new FileInputStream(propertiesFile));
      properties=new Properties();
      properties.load(is);
    }
 catch (    Exception ex) {
      throw new IllegalStateException(ex);
    }
 finally {
      if (is != null) {
        try {
          is.close();
        }
 catch (        IOException ioe) {
        }
      }
    }
    configure(properties);
  }
}

Fixed version (ground truth):
@Override public void configure(final Habitat habitat,final NetworkListener networkListener,final Http http){
  final boolean jkSupportEnabled=http.getJkEnabled() != null ? Boolean.parseBoolean(http.getJkEnabled()) : Boolean.parseBoolean(networkListener.getJkEnabled());
  if (jkSupportEnabled) {
    final String jkPropertiesFilename=Boolean.parseBoolean(http.getJkEnabled()) ? http.getJkConfigurationFile() : networkListener.getJkConfigurationFile();
    File propertiesFile=null;
    if (jkPropertiesFilename != null) {
      propertiesFile=new File(jkPropertiesFilename);
    }
    final String systemPropertyFilename=System.getProperty("String_Node_Str");
    if ((propertiesFile == null || !propertiesFile.exists()) && systemPropertyFilename != null) {
      propertiesFile=new File(systemPropertyFilename);
    }
    if (propertiesFile == null) {
      if (_logger.isLoggable(Level.FINEST)) {
        _logger.finest("String_Node_Str");
      }
      return;
    }
    if (!propertiesFile.exists()) {
      if (_logger.isLoggable(Level.FINEST)) {
        _logger.log(Level.FINEST,"String_Node_Str",propertiesFile.getAbsoluteFile());
      }
      return;
    }
    if (_logger.isLoggable(Level.FINEST)) {
      _logger.log(Level.FINEST,"String_Node_Str",propertiesFile.getAbsolutePath());
    }
    Properties properties=null;
    InputStream is=null;
    try {
      is=new BufferedInputStream(new FileInputStream(propertiesFile));
      properties=new Properties();
      properties.load(is);
    }
 catch (    Exception ex) {
      throw new IllegalStateException(ex);
    }
 finally {
      if (is != null) {
        try {
          is.close();
        }
 catch (        IOException ioe) {
        }
      }
    }
    configure(properties);
  }
}