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module Tuple2
use int.Int
use ref.Ref
val c(_:int) : (int, int)
ensures { result = (1, 2) }
let b [@bddinfer] [@infer](_:int) : int
ensures { result = 20 }
=
let _ = () in
let _= c 4 in
let i = ref 0 in
let j = ref 0 in
i := 0;
j := 0;
while !i < 10 do
variant { 10 - !i }
let (a, b) = (!i + 1, !j + 2) in
i := a;
j := b;
done;
!j
let b2 [@bddinfer] [@infer:oct](_:int) : int
ensures { result = 20 }
=
let _ = () in
let _= c 4 in
let i = ref 0 in
let j = ref 0 in
i := 0;
j := 0;
while !i < 10 do
variant { 10 - !i }
let (a, b) = (!i + 1, !j + 2) in
i := a;
j := b;
done;
!j
let b3 [@bddinfer] [@infer:box](_:int) : int
ensures { result = 20 }
=
let _ = () in
let _= c 4 in
let i = ref 0 in
let j = ref 0 in
i := 0;
j := 0;
while !i < 10 do
variant { 10 - !i }
let (a, b) = (!i + 1, !j + 2) in
i := a;
j := b;
done;
!j
end
|
