@NotNull and varargs

Hello, why in this code :

String[] l = {"A", null, "B"};
f(l);

private void f(@NotNull String... args)
{
   for (String i : args)
   {
      if (i != null) System.out.println(i);
      else System.out.println("null");
   }
}

i != null is highlighted by the 'Constants conditions & exceptions' inspection ('i != null' always true) ?

Because if i run this code it prints "A null B", thus the second line is reached, thus 'i != null' is not always true.