static int is getting more count than AtomicInteger in single thread, why so?

StackOverflow.java

import java.util.concurrent.atomic.AtomicInteger;

public class StackOverflow {
    
    private static AtomicInteger atomicInteger = new AtomicInteger(0);
    private static int staticInt = 0;
    
    public static void main(String args[]) {
        int atomicInt = atomicInteger.incrementAndGet();
        staticInt++;
        try {
            main(args);
        } catch(StackOverflowError soe) {
            System.out.println(atomicInt+":"+staticInt);
            // staticInt gets more count, why so?
        }
    }
}

Answer here

http://stackoverflow.com/questions/21905931/static-int-is-getting-more-count-than-atomicinteger-in-single-thread-why-so/21906149