Program: 93778
Project: 93778
Buggy source:
/** 
 * This method is used to set up and manage a DexClassLoader component in  order to retrieve a new activity from an .apk, which has been  already downloaded and installed on the mobile device. If everything works fine, it will instantiate the main activity of  this .apk.
 */
protected void setUpDexClassLoader(){
  if (!effectiveDexClassLoader)   return;
  Log.i(TAG_MAIN,"String_Node_Str");
  File dexOutputDir=getDir("String_Node_Str",MODE_PRIVATE);
  DexClassLoader mDexClassLoader=new DexClassLoader(exampleTestAPKPath,dexOutputDir.getAbsolutePath(),null,ClassLoader.getSystemClassLoader().getParent());
  try {
    Class<?> loadedClass=mDexClassLoader.loadClass(classNameInAPK);
    final Activity NasaDailyActivity=(Activity)loadedClass.newInstance();
    Log.i(TAG_MAIN,"String_Node_Str" + loadedClass.getSimpleName() + "String_Node_Str"+ exampleTestAPKPath.toString());
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(MainActivity.this,"String_Node_Str" + NasaDailyActivity.getClass().getName(),Toast.LENGTH_SHORT).show();
      }
    }
);
  }
 catch (  ClassNotFoundException e) {
    Log.e(TAG_MAIN,"String_Node_Str");
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(MainActivity.this,"String_Node_Str",Toast.LENGTH_SHORT).show();
      }
    }
);
    e.printStackTrace();
  }
catch (  ActivityNotFoundException e) {
    Log.e(TAG_MAIN,"String_Node_Str");
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(MainActivity.this,"String_Node_Str",Toast.LENGTH_SHORT).show();
      }
    }
);
    e.printStackTrace();
  }
catch (  InstantiationException e) {
    e.printStackTrace();
  }
catch (  IllegalAccessException e) {
    e.printStackTrace();
  }
}

Fixed version (ground truth):
/** 
 * This method is used to set up and manage a DexClassLoader component in  order to retrieve a new activity from an .apk, which has been  already downloaded and installed on the mobile device. If everything works fine, it will instantiate the main activity of  this .apk.
 */
protected void setUpDexClassLoader(){
  if (!effectiveDexClassLoader)   return;
  Log.d(TAG_MAIN,"String_Node_Str");
  File dexOutputDir=getDir("String_Node_Str",MODE_PRIVATE);
  DexClassLoader mDexClassLoader=new DexClassLoader(exampleSignedAPKPath,dexOutputDir.getAbsolutePath(),null,ClassLoader.getSystemClassLoader().getParent());
  try {
    Class<?> loadedClass=mDexClassLoader.loadClass(classNameInAPK);
    final Activity NasaDailyActivity=(Activity)loadedClass.newInstance();
    Log.i(TAG_MAIN,"String_Node_Str" + loadedClass.getSimpleName() + "String_Node_Str"+ exampleSignedAPKPath.toString());
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(MainActivity.this,"String_Node_Str" + NasaDailyActivity.getClass().getName(),Toast.LENGTH_SHORT).show();
      }
    }
);
  }
 catch (  ClassNotFoundException e) {
    Log.e(TAG_MAIN,"String_Node_Str");
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(MainActivity.this,"String_Node_Str",Toast.LENGTH_SHORT).show();
      }
    }
);
    e.printStackTrace();
  }
catch (  ActivityNotFoundException e) {
    Log.e(TAG_MAIN,"String_Node_Str");
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(MainActivity.this,"String_Node_Str",Toast.LENGTH_SHORT).show();
      }
    }
);
    e.printStackTrace();
  }
catch (  InstantiationException e) {
    e.printStackTrace();
  }
catch (  IllegalAccessException e) {
    e.printStackTrace();
  }
}