I can see some memory leaks in my code, if i run from the instruments. But in call tree, I'm not getting proper information about memory leak.
How can we identify and solve those kind of memory leaks .
You should look into the memory graph tool for debugging which XCode 8.x contains. There is a WWDC talk which includes it (along with other debugging elements) that is located here.
You can also search "memory graph debugger xcode" in your favorite search engine to learn more (I could include links but they are not guaranteed to be around).