State and prove a loop measure. If a loop invariant is given, you can use it without proof

1234567//LoopInv:(x>=4)(y5)(y5)xx2yy8elseyy+1

1 2 3 4 5 6 7 // Looplnv: (x 4) A (y while ( (x > 5) V (y < 30)) if (x > 5) else y y-Fl 30)