Suppose that both a program and the hardware that executes it have been formally verified to be accurate. Does this ensure accuracy? Give an example of a set of steps that conforms to the informal...

Suppose that both a program and the hardware that executes it have been formally verified to be accurate. Does this ensure accuracy? Give an example of a set of steps that conforms to the informal definition of an algorithm given in the opening paragraph of Section 5.1 but does not conform to the formal definition given in Figure 5.1.