The invention provides a method for detecting and isolating software bugs and generating a minimal set of stimuli to reproduce the bugs. The system may further comprise a slide guide configured to engage with each of the arm of the lock head and the slide guide track and to translate along a length of the slide guide track. A database running on the primary instance can have information synchronously replicated to the secondary replica at a block level, such that the primary and secondary replicas are in sync. This method, first, comprises the step of sending the request for service by the waking device in direction of the sleeping device.