original.name="Assert_Valid_2"
======
>>> main.whiley
function inc2(int x) -> (int r)
ensures r == x+2:
int y = x+1
assert y == x+1
y = y+1
assert y == x+2
return y
public export method test():
//
assume inc2(0) == 2
assume inc2(1) == 3
assume inc2(2) == 4
---