On Formal Equivalence Verification of Hardware

When modeling the logic functionality, hardware can be viewed as a Finite State Machine (FSM) [7]. The power-up state of hardware cannot be determined uniquely, therefore the FSM modeling the hardware does not have an initial state (or a set of initial states). Instead, it has a set of legal operation states, and it must be brought into this set of operation states from any power-up state by a reboot sequence.