A locks row 1 with PESSIMISTIC_WRITE, holds it 600 ms, deposits 10
B asks for the same lock, then deposits 20
B waited at least 400 ms for the lock: true
final balance: 130  (correct: 130)

select statements Hibernate sent (one per transaction):
select a1_0.id,a1_0.balance,a1_0.owner from Account a1_0 where a1_0.id=? for update
select a1_0.id,a1_0.balance,a1_0.owner from Account a1_0 where a1_0.id=? for update