File: while3.mlw

package info (click to toggle)
why3 1.8.2-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 45,028 kB
  • sloc: xml: 185,443; ml: 111,224; ansic: 3,998; sh: 2,578; makefile: 2,568; java: 865; python: 720; javascript: 290; lisp: 205; pascal: 173
file content (25 lines) | stat: -rw-r--r-- 340 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
module While3

	use int.Int
	use ref.Ref

	let b [@infer] [@bddinfer] (_:int) : int
	ensures { result = 0 }
	=
		let i = ref 0 in
		let j = ref 0 in
		j := 0;
		i := 1;
		while !i < 10 do
			variant { 10 - !i  }
			i := !i + 1;
			j := !j + 2;
		done;
		while !i > 1  do
			variant { !i  }
			i := !i - 1;
			j := !j - 2;
		done;
		!j

end