Program: 73014
Project: 73014
Buggy source:
/** 
 * load the Modelica file and library.  
 * @param fileName File which the model should be loaded from.
 * @param modelName Name of the model which should be built.
 * @throws ConnectException If commands couldn'tbe sent to the (OpenModelic Compiler)OMC.
 * @throws IllegalActionException 
 */
public void loadFile(String fileName,String modelName) throws ConnectException, IllegalActionException {
  String loggerInfo=null;
  _testFilePath=_systemPath + "String_Node_Str" + fileName;
  File file=new File(_testFilePath.toString());
  if (file.exists()) {
    if (_omcLogger == null) {
      throw new IllegalActionException("String_Node_Str" + "String_Node_Str" + "String_Node_Str");
    }
    loggerInfo="String_Node_Str" + modelName + "String_Node_Str"+ _testFilePath;
    _omcLogger.getInfo(loggerInfo);
    CompilerResult loadFileResult=_omcCommand.loadFile(_testFilePath);
    if (loadFileResult.getFirstResult().compareTo("String_Node_Str") != 0 && loadFileResult.getError().compareTo("String_Node_Str") == 0) {
      loggerInfo=modelName + "String_Node_Str" + _testFilePath+ "String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
    }
    if (loadFileResult.getError().compareTo("String_Node_Str") != 0) {
      loggerInfo="String_Node_Str" + modelName + "String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
      throw new ConnectException(loggerInfo);
    }
    loadFileResult=_omcCommand.loadModel("String_Node_Str");
    if (loadFileResult.getFirstResult().compareTo("String_Node_Str") == 0) {
      loggerInfo="String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
    }
    if (loadFileResult.getError().compareTo("String_Node_Str") != 0) {
      loggerInfo="String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
      throw new ConnectException(loggerInfo);
    }
  }
 else   if (!file.exists()) {
    loggerInfo="String_Node_Str" + _testFilePath + "String_Node_Str";
    _omcLogger.getInfo(loggerInfo);
    throw new ConnectException("String_Node_Str" + _testFilePath + "String_Node_Str");
  }
}

Fixed version (ground truth):
/** 
 * load the Modelica file and library.  
 * @param fileName File which the model should be loaded from.
 * @param modelName Name of the model which should be built.
 * @throws ConnectException If commands couldn'tbe sent to the (OpenModelic Compiler)OMC.
 * @throws IllegalActionException 
 */
public void loadFile(String fileName,String modelName) throws ConnectException, IllegalActionException {
  String loggerInfo=null;
  _testFilePath=_systemPath + "String_Node_Str" + fileName;
  File file=new File(_testFilePath.toString());
  if (file.exists()) {
    if (_omcLogger == null) {
      throw new IllegalActionException("String_Node_Str" + "String_Node_Str" + "String_Node_Str");
    }
    loggerInfo="String_Node_Str" + modelName + "String_Node_Str"+ _testFilePath;
    _omcLogger.getInfo(loggerInfo);
    CompilerResult loadFileInteractiveQualifiedResult=sendCommand("String_Node_Str" + _testFilePath + "String_Node_Str");
    if (loadFileInteractiveQualifiedResult.getFirstResult().compareTo("String_Node_Str") != 0 && loadFileInteractiveQualifiedResult.getError().compareTo("String_Node_Str") == 0) {
      loggerInfo=modelName + "String_Node_Str" + _testFilePath+ "String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
    }
    if (loadFileInteractiveQualifiedResult.getError().compareTo("String_Node_Str") != 0) {
      loggerInfo="String_Node_Str" + modelName + "String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
      throw new ConnectException(loggerInfo);
    }
    CompilerResult loadModelResult=sendCommand("String_Node_Str");
    if (loadModelResult.getFirstResult().compareTo("String_Node_Str") == 0) {
      loggerInfo="String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
    }
    if (loadModelResult.getError().compareTo("String_Node_Str") != 0) {
      loggerInfo="String_Node_Str";
      _omcLogger.getInfo(loggerInfo);
      throw new ConnectException(loggerInfo);
    }
  }
 else   if (!file.exists()) {
    loggerInfo="String_Node_Str" + _testFilePath + "String_Node_Str";
    _omcLogger.getInfo(loggerInfo);
    throw new ConnectException("String_Node_Str" + _testFilePath + "String_Node_Str");
  }
}