What happens when an NSArray is freed?

Suppose I create several objects and add them to an array.

House *myCrib = [House house];
House *johnHome = [House house];
House *lisaHome = [House house];
House *whiteHouse = [House house];

NSArray *houses = [NSArray arrayWithObjects: myCrib, johnHome, lisaHome, whiteHouse, nil];

As a rule, all objects of the House have a retention rate of two times, but once they are implemented automatically. After some time, I decided to free myCrib, even if I am not the owner - I was never saved and was not initialized.

[myCrib release];

The save count should drop to zero, and my object should be freed. Now my question is: will this illegal action cause my application to work erroneously or even crash or will it NSArrayjust delete my object from its list with bad consequences.

I am looking for a way to keep a list of objects, but I want the list to support itself. When some object disappears, I want the link to it to disappear from my array gracefully and automatically. I am thinking of a subclass or wrapper NSArray.

Thank.