Program: 72769
Project: 72769
Buggy source:
/** 
 * Fires the wrapped Metro-SystemC model.
 */
public void getfire(ResultHandler<Iterable<Event.Builder>> resultHandler) throws CollectionAbortedException {
  if (modelFileName != null) {
    if (!createProcess) {
      _ioThread=new Thread(){
        public void run(){
          String s=null;
          try {
            try {
              StringToken modelFileNameToken;
              StringToken configFileNameToken;
              try {
                modelFileNameToken=(StringToken)modelFileName.getToken();
                configFileNameToken=(StringToken)configFileName.getToken();
                System.out.println(modelFileNameToken.stringValue() + "String_Node_Str" + configFileNameToken.stringValue());
                process=Runtime.getRuntime().exec(modelFileNameToken.stringValue() + "String_Node_Str" + configFileNameToken.stringValue());
              }
 catch (              IllegalActionException e) {
                e.printStackTrace();
              }
              stdInput=new BufferedReader(new InputStreamReader(process.getInputStream()));
              while ((s=stdInput.readLine()) != null) {
                System.out.println(s);
              }
            }
  finally {
              stdInput.close();
            }
          }
 catch (          IOException e) {
            e.printStackTrace();
          }
        }
      }
;
      _ioThread.start();
      createProcess=true;
    }
  }
  while (!isStopRequested()) {
    syncEvents(events);
    do {
      resultHandler.handleResult(events);
    }
 while (!MetroIIEventBuilder.atLeastOneNotified(events) && !isStopRequested());
    pushEvents(events);
  }
}

Fixed version (ground truth):
/** 
 * Fires the wrapped Metro-SystemC model.
 */
public void getfire(ResultHandler<Iterable<Event.Builder>> resultHandler) throws CollectionAbortedException {
  if (modelFileName != null) {
    if (!createProcess) {
      _ioThread=new Thread(){
        public void run(){
          String s=null;
          try {
            String command=null;
            try {
              StringToken modelFileNameToken;
              StringToken configFileNameToken;
              try {
                modelFileNameToken=(StringToken)modelFileName.getToken();
                configFileNameToken=(StringToken)configFileName.getToken();
                File modelFile=new File(modelFileNameToken.stringValue());
                if (!modelFile.exists()) {
                  throw new IllegalActionException("String_Node_Str" + modelFileNameToken.stringValue() + "String_Node_Str");
                }
                command=modelFileNameToken.stringValue() + "String_Node_Str" + configFileNameToken.stringValue();
                System.out.println("String_Node_Str" + command);
                process=Runtime.getRuntime().exec(command);
              }
 catch (              IllegalActionException e) {
                e.printStackTrace();
              }
              stdInput=new BufferedReader(new InputStreamReader(process.getInputStream()));
              while ((s=stdInput.readLine()) != null) {
                System.out.println(s);
              }
            }
  finally {
              if (stdInput != null) {
                try {
                  stdInput.close();
                }
 catch (                IOException ex) {
                  System.err.println("String_Node_Str" + (command == null ? "String_Node_Str" : command) + "String_Node_Str");
                }
              }
            }
          }
 catch (          IOException e) {
            e.printStackTrace();
          }
        }
      }
;
      _ioThread.start();
      createProcess=true;
    }
  }
  while (!isStopRequested()) {
    if (events == null) {
      throw new NullPointerException("String_Node_Str");
    }
    syncEvents(events);
    do {
      resultHandler.handleResult(events);
    }
 while (!MetroIIEventBuilder.atLeastOneNotified(events) && !isStopRequested());
    pushEvents(events);
  }
}