output: #fixed code
                                  protected String resolveDriverVersion(String driverVersion) {
          String preferenceKey = getKeyForPreferences();
          Optional<String> browserVersion = empty();
          browserVersion = getValueFromPreferences(preferenceKey, browserVersion);
          if (!browserVersion.isPresent()) {
              browserVersion = detectBrowserVersion();
          }
          if (browserVersion.isPresent()) {
              preferenceKey = getKeyForPreferences() + browserVersion.get();
              driverVersion = preferences.getValueFromPreferences(preferenceKey);
  
              Optional<String> optionalDriverVersion = empty();
              if (isUnknown(driverVersion)) {
                  optionalDriverVersion = getDriverVersionFromRepository(
                          browserVersion);
              }
              if (isUnknown(driverVersion)) {
                  optionalDriverVersion = getDriverVersionFromProperties(
                          preferenceKey);
              }
              if (optionalDriverVersion.isPresent()) {
                  driverVersion = optionalDriverVersion.get();
              }
              if (isUnknown(driverVersion)) {
                  log.debug(
                          "The driver version for {} {} is unknown ... trying with latest",
                          getDriverManagerType(), browserVersion.get());
              } else if (!isUnknown(driverVersion)) {
                  log.info(
                          "Using {} {} (since {} {} is installed in your machine)",
                          getDriverName(), driverVersion, getDriverManagerType(),
                          browserVersion.get());
                  storeInPreferences(preferenceKey, driverVersion,
                          browserVersion.get());
              }
          }
  
          // if driverVersion is still unknown, try with latest
          if (isUnknown(driverVersion)) {
              Optional<String> latestDriverVersionFromRepository = getLatestDriverVersionFromRepository();
              if (latestDriverVersionFromRepository.isPresent()) {
                  driverVersion = latestDriverVersionFromRepository.get();
              }
          }
          return driverVersion;
      }
input: #vulnerable code 
                                  protected String resolveDriverVersion(String driverVersion) {
          preferenceKey = getKeyForPreferences();
          Optional<String> browserVersion = empty();
          browserVersion = getValueFromPreferences(browserVersion);
          if (!browserVersion.isPresent()) {
              browserVersion = detectBrowserVersion();
          }
          if (browserVersion.isPresent()) {
              preferenceKey = getKeyForPreferences() + browserVersion.get();
              driverVersion = preferences.getValueFromPreferences(preferenceKey);
  
              Optional<String> optionalDriverVersion = empty();
              if (isUnknown(driverVersion)) {
                  optionalDriverVersion = getDriverVersionFromRepository(
                          browserVersion);
              }
              if (isUnknown(driverVersion)) {
                  optionalDriverVersion = getDriverVersionFromProperties(
                          preferenceKey);
              }
              if (optionalDriverVersion.isPresent()) {
                  driverVersion = optionalDriverVersion.get();
              }
              if (isUnknown(driverVersion)) {
                  log.debug(
                          "The driver version for {} {} is unknown ... trying with latest",
                          getDriverManagerType(), browserVersion.get());
              } else if (!isUnknown(driverVersion)) {
                  log.info(
                          "Using {} {} (since {} {} is installed in your machine)",
                          getDriverName(), driverVersion, getDriverManagerType(),
                          browserVersion.get());
                  storeInPreferences(driverVersion, browserVersion.get());
              }
          }
  
          // if driverVersion is still unknown, try with latest
          if (isUnknown(driverVersion)) {
              Optional<String> latestDriverVersionFromRepository = getLatestDriverVersionFromRepository();
              if (latestDriverVersionFromRepository.isPresent()) {
                  driverVersion = latestDriverVersionFromRepository.get();
              }
          }
          return driverVersion;
      } 
                              #location 9 
                              #vulnerability type THREAD_SAFETY_VIOLATION