islands.adb:51:31: medium: overflow check might fail (e.g. when Count = Natural'Last)[#0]
islands.adb:63:13: medium: loop invariant might fail after first iteration, cannot prove Count <= A + B (e.g. when A = 5 and B = 5 and Count = 11)[#1]
islands.adb:63:13: medium: loop invariant might fail in first iteration, cannot prove Count <= A + B (e.g. when A = 0 and B = 5 and Count = 6)[#2]
