#vulnerable code 
                                public boolean isOver()
    {
        return state == IceProcessingState.COMPLETED
            || state == IceProcessingState.TERMINATED
            || state == IceProcessingState.FAILED;
    } 
                            #location 3 
                            #vulnerability type THREAD_SAFETY_VIOLATION
#fixed code
                                public boolean isOver()
    {
        IceProcessingState state = getState();

        return (state != null) && state.isOver();
    }