Program: 45959
Project: 45959
Buggy source:
@Override public void handleMessage(Message message){
  logger.fine("String_Node_Str");
  if (message instanceof GetVoiceBridgeResponseMessage) {
    startSoftphone((GetVoiceBridgeResponseMessage)message);
    return;
  }
  if (message instanceof ChangeUsernameAliasMessage) {
    changeUsernameAlias((ChangeUsernameAliasMessage)message);
    return;
  }
  if (message instanceof VoiceChatJoinRequestMessage) {
    final IncomingCallHUDPanel incomingCallHUDPanel=new IncomingCallHUDPanel(this,session,cell.getCellID(),(VoiceChatJoinRequestMessage)message);
    HUD mainHUD=HUDManagerFactory.getHUDManager().getHUD("String_Node_Str");
    final HUDComponent incomingCallHUDComponent=mainHUD.createComponent(incomingCallHUDPanel);
    incomingCallHUDPanel.setHUDComponent(incomingCallHUDComponent);
    incomingCallHUDComponent.setPreferredLocation(Layout.CENTER);
    incomingCallHUDComponent.setIcon(voiceChatIcon);
    mainHUD.addComponent(incomingCallHUDComponent);
    incomingCallHUDComponent.addEventListener(new HUDEventListener(){
      public void HUDObjectChanged(      HUDEvent e){
        if (e.getEventType().equals(HUDEventType.DISAPPEARED)) {
          incomingCallHUDPanel.busy();
        }
      }
    }
);
    incomingCallHUDComponent.setVisible(true);
    return;
  }
  if (message instanceof VoiceChatBusyMessage) {
    VoiceChatBusyMessage msg=(VoiceChatBusyMessage)message;
    VoiceChatBusyHUDPanel voiceChatBusyHUDPanel=new VoiceChatBusyHUDPanel(msg.getCallee());
    HUD mainHUD=HUDManagerFactory.getHUDManager().getHUD("String_Node_Str");
    HUDComponent voiceChatBusyHUDComponent=mainHUD.createComponent(voiceChatBusyHUDPanel);
    voiceChatBusyHUDPanel.setHUDComponent(voiceChatBusyHUDComponent);
    voiceChatBusyHUDComponent.setPreferredLocation(Layout.CENTER);
    voiceChatBusyHUDComponent.setIcon(voiceChatIcon);
    mainHUD.addComponent(voiceChatBusyHUDComponent);
    voiceChatBusyHUDComponent.addEventListener(new HUDEventListener(){
      public void HUDObjectChanged(      HUDEvent e){
        if (e.getEventType().equals(HUDEventType.DISAPPEARED)) {
        }
      }
    }
);
    voiceChatBusyHUDComponent.setVisible(true);
    notifyMemberChangeListeners(msg.getGroup(),msg.getCallee(),false);
    return;
  }
  if (message instanceof VoiceChatInfoResponseMessage) {
    VoiceChatInfoResponseMessage msg=(VoiceChatInfoResponseMessage)message;
    notifyMemberChangeListeners(msg.getGroup(),msg.getChatters());
    return;
  }
  if (message instanceof VoiceChatJoinAcceptedMessage) {
    joinVoiceChat((VoiceChatJoinAcceptedMessage)message);
    return;
  }
  if (message instanceof VoiceChatHoldMessage) {
    VoiceChatHoldMessage msg=(VoiceChatHoldMessage)message;
    return;
  }
  if (message instanceof VoiceChatLeaveMessage) {
    leaveVoiceChat((VoiceChatLeaveMessage)message);
    return;
  }
  if (message instanceof VoiceChatCallEndedMessage) {
    VoiceChatCallEndedMessage msg=(VoiceChatCallEndedMessage)message;
    voiceChatCallEnded(msg);
    session.send(this,new VoiceChatLeaveMessage(msg.getGroup(),msg.getCallee()));
    return;
  }
  if (message instanceof ConeOfSilenceEnterExitMessage) {
    coneOfSilenceEnterExit((ConeOfSilenceEnterExitMessage)message);
    return;
  }
  if (message instanceof PlayerInRangeMessage) {
    PlayerInRangeMessage msg=(PlayerInRangeMessage)message;
    logger.info("String_Node_Str" + msg.isInRange() + "String_Node_Str"+ msg.getPlayerID()+ "String_Node_Str"+ msg.getPlayerInRangeID());
    return;
  }
  if (message instanceof CallEstablishedMessage) {
    if (callMigrationForm != null) {
      callMigrationForm.setStatus("String_Node_Str");
    }
    return;
  }
  if (message instanceof CallMigrateMessage) {
    callMigrate((CallMigrateMessage)message);
    return;
  }
  if (message instanceof CallMutedMessage) {
    callMuted((CallMutedMessage)message);
    return;
  }
  if (message instanceof CallSpeakingMessage) {
    callSpeaking((CallSpeakingMessage)message);
    return;
  }
  if (message instanceof CallEndedMessage) {
    callEnded((CallEndedMessage)message);
    return;
  }
  logger.warning("String_Node_Str" + message);
  throw new UnsupportedOperationException("String_Node_Str");
}

Fixed version (ground truth):
@Override public void handleMessage(Message message){
  logger.fine("String_Node_Str");
  if (message instanceof GetVoiceBridgeResponseMessage) {
    startSoftphone((GetVoiceBridgeResponseMessage)message);
    return;
  }
  if (message instanceof ChangeUsernameAliasMessage) {
    changeUsernameAlias((ChangeUsernameAliasMessage)message);
    return;
  }
  if (message instanceof VoiceChatJoinRequestMessage) {
    System.out.println("String_Node_Str");
    final IncomingCallHUDPanel incomingCallHUDPanel=new IncomingCallHUDPanel(this,session,cell.getCellID(),(VoiceChatJoinRequestMessage)message);
    HUD mainHUD=HUDManagerFactory.getHUDManager().getHUD("String_Node_Str");
    final HUDComponent incomingCallHUDComponent=mainHUD.createComponent(incomingCallHUDPanel);
    incomingCallHUDPanel.setHUDComponent(incomingCallHUDComponent);
    incomingCallHUDComponent.setPreferredLocation(Layout.CENTER);
    incomingCallHUDComponent.setIcon(voiceChatIcon);
    mainHUD.addComponent(incomingCallHUDComponent);
    incomingCallHUDComponent.addEventListener(new HUDEventListener(){
      public void HUDObjectChanged(      HUDEvent e){
        if (e.getEventType().equals(HUDEventType.DISAPPEARED)) {
          incomingCallHUDPanel.busy();
        }
      }
    }
);
    incomingCallHUDComponent.setVisible(true);
    return;
  }
  if (message instanceof VoiceChatBusyMessage) {
    VoiceChatBusyMessage msg=(VoiceChatBusyMessage)message;
    VoiceChatBusyHUDPanel voiceChatBusyHUDPanel=new VoiceChatBusyHUDPanel(msg.getCallee());
    HUD mainHUD=HUDManagerFactory.getHUDManager().getHUD("String_Node_Str");
    HUDComponent voiceChatBusyHUDComponent=mainHUD.createComponent(voiceChatBusyHUDPanel);
    voiceChatBusyHUDPanel.setHUDComponent(voiceChatBusyHUDComponent);
    voiceChatBusyHUDComponent.setPreferredLocation(Layout.CENTER);
    voiceChatBusyHUDComponent.setIcon(voiceChatIcon);
    mainHUD.addComponent(voiceChatBusyHUDComponent);
    voiceChatBusyHUDComponent.addEventListener(new HUDEventListener(){
      public void HUDObjectChanged(      HUDEvent e){
        if (e.getEventType().equals(HUDEventType.DISAPPEARED)) {
        }
      }
    }
);
    voiceChatBusyHUDComponent.setVisible(true);
    notifyMemberChangeListeners(msg.getGroup(),msg.getCallee(),false);
    return;
  }
  if (message instanceof VoiceChatInfoResponseMessage) {
    VoiceChatInfoResponseMessage msg=(VoiceChatInfoResponseMessage)message;
    notifyMemberChangeListeners(msg.getGroup(),msg.getChatters());
    return;
  }
  if (message instanceof VoiceChatJoinAcceptedMessage) {
    joinVoiceChat((VoiceChatJoinAcceptedMessage)message);
    return;
  }
  if (message instanceof VoiceChatHoldMessage) {
    VoiceChatHoldMessage msg=(VoiceChatHoldMessage)message;
    return;
  }
  if (message instanceof VoiceChatLeaveMessage) {
    leaveVoiceChat((VoiceChatLeaveMessage)message);
    return;
  }
  if (message instanceof VoiceChatCallEndedMessage) {
    VoiceChatCallEndedMessage msg=(VoiceChatCallEndedMessage)message;
    voiceChatCallEnded(msg);
    session.send(this,new VoiceChatLeaveMessage(msg.getGroup(),msg.getCallee()));
    return;
  }
  if (message instanceof ConeOfSilenceEnterExitMessage) {
    coneOfSilenceEnterExit((ConeOfSilenceEnterExitMessage)message);
    return;
  }
  if (message instanceof PlayerInRangeMessage) {
    PlayerInRangeMessage msg=(PlayerInRangeMessage)message;
    PresenceInfo info=pm.getPresenceInfo(msg.getPlayerID());
    if (info == null) {
      logger.warning("String_Node_Str" + msg.getPlayerID());
      return;
    }
    PresenceInfo userInRangeInfo=pm.getPresenceInfo(msg.getPlayerInRangeID());
    if (userInRangeInfo == null) {
      logger.warning("String_Node_Str" + msg.getPlayerInRangeID());
      return;
    }
    notifyUserInRangeListeners(info,userInRangeInfo,msg.isInRange());
    return;
  }
  if (message instanceof CallEstablishedMessage) {
    if (callMigrationForm != null) {
      callMigrationForm.setStatus("String_Node_Str");
    }
    return;
  }
  if (message instanceof CallMigrateMessage) {
    callMigrate((CallMigrateMessage)message);
    return;
  }
  if (message instanceof CallMutedMessage) {
    callMuted((CallMutedMessage)message);
    return;
  }
  if (message instanceof CallSpeakingMessage) {
    callSpeaking((CallSpeakingMessage)message);
    return;
  }
  if (message instanceof CallEndedMessage) {
    callEnded((CallEndedMessage)message);
    return;
  }
  logger.warning("String_Node_Str" + message);
  throw new UnsupportedOperationException("String_Node_Str");
}