I am not able to find the PrivateKey 
it just says done, is it a bug or am i doing something wrong?
Your key is on the edge of provided range. This is the hardest option. It will still be found, but it will take more time and more luck. it just says done, is it a bug or am i doing something wrong?Code:
[96.67 MK/s][GPU 0.00 MK/s][Count 2^33.51][Dead 2][02:26 (Avg 01:35)][47.6/81.5MB]
Key# 0 [1S]Pub: 0x029E162328C08BF1B3C9BA030ACBDBE111D1191D07A157AB285A403A739E5F0139
Priv: 0xE9C742148F3F0C84463F29FE66E2CA
Key# 0 [1S]Pub: 0x029E162328C08BF1B3C9BA030ACBDBE111D1191D07A157AB285A403A739E5F0139
Priv: 0xE9C742148F3F0C84463F29FE66E2CA
Or alternatively, you can shift the range to the left or right by half of the interval, provided that you know that the key is going to be closer to one of those intervals. You don't need to expend more time waiting in such cases.