      def next(time = nil)
        @mutex.lock
        begin
          count = @counter = (@counter + 1) % 0xFFFFFF
        ensure
          @mutex.unlock rescue nil
        end
        generate(time || ::Time.new.to_i, count)
      end
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.