private void ExecuteOneRandomSplit(Random random)
{
long lower = RandomLong(random);
long len = random.Next(16384 * 1024); // not too large bitsets, else OOME!
while (lower + len < lower) // overflow
{
lower >>= 1;
}
AssertLongRangeSplit(lower, lower + len, random.Next(64) + 1, true, null, null);
}