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type t1;
procedure ok()
{
var b:bool, x:int, y:int;
assert x == if b then x else x;
assert x == if true then x else y;
}
procedure ok2()
{
var x:int, y:int;
var a:t1, b:t1, c:t1;
c := if x > y then a else b;
assert c == a || c == b;
assume x > y;
assert c == a;
}
procedure fail1()
{
var b:bool, x:int, y:int;
assert x == if b then x else y;
}
procedure fail2()
{
var b:bool, x:int, y:int;
assert x == if false then x else y;
}
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