check_insert_range
check_insert_range(mt, r[0], r[1], xa_mk_value(r[0]), 0);
check_insert_range(mt, r[2], r[3], xa_mk_value(r[2]), 0);
check_insert_range(mt, r[4], r[5], xa_mk_value(r[4]), -EEXIST);
check_insert_range(mt, range[i] >> 12, (range[i + 1] >> 12) - 1,
check_insert_range(mt, range[i] >> 12, (range[i + 1] >> 12) - 1,