original.name="Array_Invalid_21"
======
>>> main.whiley
function f(int[] xs) -> (int r)
requires |xs| > 0
ensures r < |xs|:
//
return 0
function g(int[] xs) -> (int r)
requires |xs| > 0:
//
return xs[f(xs)]
public export method test():
//
assume g([0]) == 0
//
assume g([1,0]) == 1
---
E724 main.whiley 10,14:18