34548.03user 2220.37system 10:26:49elapsed 97%CPU (0avgtext+0avgdata 1651664maxresident)k
Which looks fine.
Interestingly 10 * 3600 is 0x8ca0 while 20 * 3600 is 0x11940
That might suggest the overflow starts to happen at about 18:12:16
34548.03user 2220.37system 10:26:49elapsed 97%CPU (0avgtext+0avgdata 1651664maxresid ent)k
Which looks fine.
Interestingly
10 * 3600 is 0x8ca0
while
20 * 3600 is 0x11940
That might suggest the overflow starts to happen at about 18:12:16