Program: 68354
Project: 68354
Buggy source:
public void testCancelRunAndRenderTask(){
  String input=this.genInputFile("String_Node_Str");
  long bTime, eTime, timeSpan1, timeSpan2, timeSpan3;
  try {
    IReportRunnable runnable=engine.openReportDesign(new FileInputStream(new File(input)));
    IRunAndRenderTask task=engine.createRunAndRenderTask(runnable);
    HTMLRenderOption option=new HTMLRenderOption();
    option.setOutputFormat("String_Node_Str");
    task.setRenderOption(option);
    task.setAppContext(new HashMap());
    CancelTask cancelThread=new CancelTask("String_Node_Str",task);
    cancelThread.start();
    bTime=System.currentTimeMillis();
    task.run();
    eTime=System.currentTimeMillis();
    task.close();
    timeSpan1=eTime - bTime;
    CancelWithFlagTask cancelWithFlagTask=new CancelWithFlagTask("String_Node_Str",task);
    cancelWithFlagTask.start();
    bTime=System.currentTimeMillis();
    task.run();
    eTime=System.currentTimeMillis();
    task.close();
    timeSpan2=eTime - bTime;
    task=engine.createRunAndRenderTask(runnable);
    task.setRenderOption(option);
    task.setAppContext(new HashMap());
    bTime=System.currentTimeMillis();
    task.run();
    eTime=System.currentTimeMillis();
    task.close();
    timeSpan3=eTime - bTime;
    assertTrue("String_Node_Str",timeSpan3 > timeSpan1);
    assertTrue("String_Node_Str",timeSpan3 > timeSpan2);
  }
 catch (  Exception e) {
    e.printStackTrace();
    fail("String_Node_Str");
  }
}

Fixed version (ground truth):
public void testCancelRunAndRenderTask(){
  String input=this.genInputFile("String_Node_Str");
  long bTime, eTime, timeSpan1=0, timeSpan2=0, timeSpan3=0;
  try {
    IReportRunnable runnable=engine.openReportDesign(new FileInputStream(new File(input)));
    IRunAndRenderTask task=engine.createRunAndRenderTask(runnable);
    HTMLRenderOption option=new HTMLRenderOption();
    option.setOutputFormat("String_Node_Str");
    for (int i=0; i < 3; i++) {
      task=engine.createRunAndRenderTask(runnable);
      task.setRenderOption(option);
      task.setAppContext(new HashMap());
      task.run();
      task.close();
    }
    for (int i=0; i < 10; i++) {
      task=engine.createRunAndRenderTask(runnable);
      task.setRenderOption(option);
      task.setAppContext(new HashMap());
      engine.getConfig().getAppContext().put("String_Node_Str",task);
      bTime=System.currentTimeMillis();
      task.run();
      eTime=System.currentTimeMillis();
      task.close();
      timeSpan1+=eTime - bTime;
      task=engine.createRunAndRenderTask(runnable);
      engine.getConfig().getAppContext().put("String_Node_Str",task);
      task.setRenderOption(option);
      bTime=System.currentTimeMillis();
      task.run();
      eTime=System.currentTimeMillis();
      task.close();
      timeSpan2+=eTime - bTime;
      task=engine.createRunAndRenderTask(runnable);
      engine.getConfig().getAppContext().put("String_Node_Str",null);
      engine.getConfig().getAppContext().put("String_Node_Str",null);
      task.setRenderOption(option);
      bTime=System.currentTimeMillis();
      task.run();
      eTime=System.currentTimeMillis();
      task.close();
      timeSpan3+=eTime - bTime;
    }
    assertTrue("String_Node_Str",timeSpan3 > timeSpan1);
    assertTrue("String_Node_Str",timeSpan3 > timeSpan2);
  }
 catch (  Exception e) {
    e.printStackTrace();
    fail("String_Node_Str");
  }
}