recursion returning unexpected output

I think the output should be 4 7 Instead I am getting 6 6 4 7 since p1 = p2 i.e. 6 = 6 the cout statement should not be performed. Why am I seeing the 6 6 ?

 using namespace std;

 void test(int p1, int p2);

  void  main()
  {
     test(2, 8);
     return ;
   }


  void  test(int p1, int p2)
  {
   if (p1 != p2)
   {
    p1 = p1 + 2;
    p2 = p2 - 1;
    test(p1, p2);
    cout << p1;
    cout << p2;
   }
  }