You can use Zombie to get symbolicated info related to crash
Enable Zombie Objects by-

And then, checking the Enable Zombie Objects checkbox,

Run(profile) your project in simulator -
The instruments will be launched as-

Instruments would show a message similar to the following:

Your next step should be to set an exception breakpoint in Xcode. When your app crashes, Xcode will pause your app at the point where the crash occurs. To set an exception breakpoint, open the breakpoint navigator by choosing View > Navigators > Show Breakpoint Navigator. Click the + button at the bottom of the navigator and choose Add Exception Breakpoint.