Course Solutions Uncategorized (Solved) : Consider Following Code Fragment Refer Count Refer Body Loop E Two Assignments Together St Q31764498 . . . .

(Solved) : Consider Following Code Fragment Refer Count Refer Body Loop E Two Assignments Together St Q31764498 . . . .

 

Consider the following code fragment that we refer to as Count below, and we refer to the body of the loop (i.e. the two assignments together with the if-statement) as Body. while (y < n) yy 1; x1; if (x = 7) then x := 0 else x :=x The goal of the exercise is to show that fr < 7yCount r < 7) 1. Given the desired postcondition, what is a suitable invariant P for the loop? You just need to state the invariant 2. Give a Hoare Logic proof of the fact that your invariant above is indeed an invariant, i.e. prove the Hoare-triple {P]Body[P). 3. Hence or otherwise give a lio nel gic proof of the triple (z < 7)Count(z < η in Pa, that the Hoan-triple {P)Count(z < η des nat 1-11 and justify your answer briefly

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