Program: 81209
Project: 81209
Buggy source:
@Override public void handleMessage(Message msg){
  Log.d(this.getClass().getSimpleName(),"String_Node_Str" + android.os.Process.myTid());
  Log.d(this.getClass().getSimpleName(),"String_Node_Str");
switch (msg.what) {
case HandbagParseService.MSG_UI_ACTIVITY_REGISTER:
    Log.d(this.getClass().getSimpleName(),"String_Node_Str");
  uiActivity=msg.replyTo;
shutdownRequested=false;
try {
uiActivity.send(Message.obtain(null,HandbagUI.MSG_UI_ACTIVITY_REGISTERED));
}
 catch (RemoteException e) {
uiActivity=null;
}
if (uiActivity != null) {
}
break;
case HandbagParseService.MSG_PARSE_SERVICE_REGISTER:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
parseService=msg.replyTo;
try {
parseService.send(Message.obtain(null,MSG_PARSE_SERVICE_REGISTERED));
}
 catch (RemoteException e) {
parseService=null;
}
break;
case MSG_UI_CONNECT_TO_TARGET:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
connectToTarget(msg.getData());
break;
case MSG_COMMS_SEND_PACKET:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
sendPacketToTarget(msg.getData().getStringArray(null));
break;
case MSG_UI_DISCONNECT_FROM_TARGET:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
if (targetNetworkConnection != null) {
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
targetNetworkConnection.cancel(true);
try {
targetNetworkConnection.socket.close();
}
 catch (IOException e) {
e.printStackTrace();
}
catch (NullPointerException e) {
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
}
}
break;
case HandbagParseService.MSG_UI_SHUTDOWN_REQUEST:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
shutdownRequested=true;
if (targetNetworkConnection != null) {
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
targetNetworkConnection.cancel(true);
}
break;
default :
Log.d(this.getClass().getSimpleName(),"String_Node_Str" + msg.what);
super.handleMessage(msg);
}
}

Fixed version (ground truth):
@Override public void handleMessage(Message msg){
  Log.d(this.getClass().getSimpleName(),"String_Node_Str" + android.os.Process.myTid());
  Log.d(this.getClass().getSimpleName(),"String_Node_Str");
switch (msg.what) {
case MSG_SETUP_ACTIVITY_REGISTER:
    Log.d(this.getClass().getSimpleName(),"String_Node_Str");
  uiActivity=msg.replyTo;
shutdownRequested=false;
try {
uiActivity.send(Message.obtain(null,Activity_MainDisplay.MSG_DISPLAY_ACTIVITY_REGISTERED));
}
 catch (RemoteException e) {
uiActivity=null;
}
if (uiActivity != null) {
}
break;
case HandbagParseService.MSG_PARSE_SERVICE_REGISTER:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
parseService=msg.replyTo;
try {
parseService.send(Message.obtain(null,MSG_PARSE_SERVICE_REGISTERED));
}
 catch (RemoteException e) {
parseService=null;
}
break;
case MSG_UI_CONNECT_TO_TARGET:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
connectToTarget(msg.getData());
break;
case MSG_COMMS_SEND_PACKET:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
sendPacketToTarget(msg.getData().getStringArray(null));
break;
case MSG_UI_DISCONNECT_FROM_TARGET:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
if (targetNetworkConnection != null) {
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
targetNetworkConnection.cancel(true);
try {
targetNetworkConnection.socket.close();
}
 catch (IOException e) {
e.printStackTrace();
}
catch (NullPointerException e) {
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
}
}
break;
case HandbagParseService.MSG_UI_SHUTDOWN_REQUEST:
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
shutdownRequested=true;
if (targetNetworkConnection != null) {
Log.d(this.getClass().getSimpleName(),"String_Node_Str");
targetNetworkConnection.cancel(true);
}
parseService=null;
break;
default :
Log.d(this.getClass().getSimpleName(),"String_Node_Str" + msg.what);
super.handleMessage(msg);
}
}