Program: 94380
Project: 94380
Buggy source:
protected synchronized static void initialize(final Configuration conf) throws DataProviderException {
  if (adHocProviderFactories == null) {
    log.info("String_Node_Str");
    adHocProviderFactories=new HashMap<String,AdHocDataProviderFactory>();
    final ServiceLoader<AdHocDataProviderFactory> dataProviderLoader=ServiceLoader.load(AdHocDataProviderFactory.class);
    for (    final AdHocDataProviderFactory dp : dataProviderLoader) {
      if (configSettings != null) {
        dp.setConfiguration(configSettings);
      }
      if (dp.isValid()) {
        log.info("String_Node_Str" + dp.getClass().getName());
        adHocProviderFactories.put(dp.getPrefix(),dp);
        dp.initialize(conf);
      }
 else {
        log.info("String_Node_Str" + dp.getClass().getName() + "String_Node_Str");
      }
    }
  }
  if (mrsImageProviderFactories == null) {
    log.info("String_Node_Str");
    mrsImageProviderFactories=new HashMap<String,MrsImageDataProviderFactory>();
    final ServiceLoader<MrsImageDataProviderFactory> dataProviderLoader=ServiceLoader.load(MrsImageDataProviderFactory.class);
    for (    final MrsImageDataProviderFactory dp : dataProviderLoader) {
      try {
        if (configSettings != null) {
          dp.setConfiguration(configSettings);
        }
        if (dp.isValid()) {
          log.info("String_Node_Str",dp.getPrefix(),dp.getClass().getName());
          mrsImageProviderFactories.put(dp.getPrefix(),dp);
          dp.initialize(conf);
        }
 else {
          log.info("String_Node_Str" + dp.getClass().getName() + "String_Node_Str");
        }
      }
 catch (      Exception e) {
        log.warn("String_Node_Str" + dp.getClass().getName(),e);
      }
    }
  }
  if (vectorProviderFactories == null) {
    log.info("String_Node_Str");
    boolean debugEnabled=log.isDebugEnabled();
    vectorProviderFactories=new HashMap<String,VectorDataProviderFactory>();
    if (debugEnabled) {
      log.debug("String_Node_Str");
    }
    final ServiceLoader<VectorDataProviderFactory> dataProviderLoader=ServiceLoader.load(VectorDataProviderFactory.class);
    int count=0;
    for (    final VectorDataProviderFactory dp : dataProviderLoader) {
      try {
        if (debugEnabled) {
          log.debug("String_Node_Str" + dp.getClass().getName() + "String_Node_Str"+ ((conf == null) ? "String_Node_Str" : "String_Node_Str"));
        }
        if (configSettings != null) {
          dp.setConfiguration(configSettings);
        }
        if (dp.isValid()) {
          if (debugEnabled) {
            log.debug("String_Node_Str" + dp.getClass().getName() + "String_Node_Str"+ dp.getPrefix());
          }
          vectorProviderFactories.put(dp.getPrefix(),dp);
          dp.initialize(conf);
          count++;
        }
 else {
          if (debugEnabled) {
            log.debug("String_Node_Str" + dp.getClass().getName() + "String_Node_Str"+ dp.getPrefix());
          }
          log.info("String_Node_Str" + dp.getClass().getName() + "String_Node_Str");
        }
      }
 catch (      Exception e) {
        log.warn("String_Node_Str" + dp.getClass().getName() + "String_Node_Str",e);
      }
    }
    if (count == 0) {
      log.warn("String_Node_Str");
    }
  }
  findPreferredProvider(conf);
}

Fixed version (ground truth):
protected synchronized static void initialize(final Configuration conf) throws DataProviderException {
  if (adHocProviderFactories == null) {
    log.info("String_Node_Str");
    adHocProviderFactories=new HashMap<String,AdHocDataProviderFactory>();
    final ServiceLoader<AdHocDataProviderFactory> dataProviderLoader=ServiceLoader.load(AdHocDataProviderFactory.class);
    for (    final AdHocDataProviderFactory dp : dataProviderLoader) {
      if (configSettings != null) {
        dp.setConfiguration(configSettings);
      }
      if (dp.isValid(conf)) {
        log.info("String_Node_Str" + dp.getClass().getName());
        adHocProviderFactories.put(dp.getPrefix(),dp);
        dp.initialize(conf);
      }
 else {
        log.info("String_Node_Str" + dp.getClass().getName() + "String_Node_Str");
      }
    }
  }
  if (mrsImageProviderFactories == null) {
    log.info("String_Node_Str");
    mrsImageProviderFactories=new HashMap<String,MrsImageDataProviderFactory>();
    final ServiceLoader<MrsImageDataProviderFactory> dataProviderLoader=ServiceLoader.load(MrsImageDataProviderFactory.class);
    for (    final MrsImageDataProviderFactory dp : dataProviderLoader) {
      try {
        if (configSettings != null) {
          dp.setConfiguration(configSettings);
        }
        if (dp.isValid()) {
          log.info("String_Node_Str",dp.getPrefix(),dp.getClass().getName());
          mrsImageProviderFactories.put(dp.getPrefix(),dp);
          dp.initialize(conf);
        }
 else {
          log.info("String_Node_Str" + dp.getClass().getName() + "String_Node_Str");
        }
      }
 catch (      Exception e) {
        log.warn("String_Node_Str" + dp.getClass().getName(),e);
      }
    }
  }
  if (vectorProviderFactories == null) {
    log.info("String_Node_Str");
    boolean debugEnabled=log.isDebugEnabled();
    vectorProviderFactories=new HashMap<String,VectorDataProviderFactory>();
    if (debugEnabled) {
      log.debug("String_Node_Str");
    }
    final ServiceLoader<VectorDataProviderFactory> dataProviderLoader=ServiceLoader.load(VectorDataProviderFactory.class);
    int count=0;
    for (    final VectorDataProviderFactory dp : dataProviderLoader) {
      try {
        if (debugEnabled) {
          log.debug("String_Node_Str" + dp.getClass().getName() + "String_Node_Str"+ ((conf == null) ? "String_Node_Str" : "String_Node_Str"));
        }
        if (configSettings != null) {
          dp.setConfiguration(configSettings);
        }
        if (dp.isValid(conf)) {
          if (debugEnabled) {
            log.debug("String_Node_Str" + dp.getClass().getName() + "String_Node_Str"+ dp.getPrefix());
          }
          vectorProviderFactories.put(dp.getPrefix(),dp);
          dp.initialize(conf);
          count++;
        }
 else {
          if (debugEnabled) {
            log.debug("String_Node_Str" + dp.getClass().getName() + "String_Node_Str"+ dp.getPrefix());
          }
          log.info("String_Node_Str" + dp.getClass().getName() + "String_Node_Str");
        }
      }
 catch (      Exception e) {
        log.warn("String_Node_Str" + dp.getClass().getName() + "String_Node_Str",e);
      }
    }
    if (count == 0) {
      log.warn("String_Node_Str");
    }
  }
  findPreferredProvider(conf);
}