How to change (move forward/backward) an iterator in range based for loop?

I just want to get an element that is in the next iteration (using range-based for loop)

I have tried something like that:

*(&x+1) is supposed to mean "i+1" if "i" would have been an iterator here

bool factorChain(std::vector<int> arr) {
    for(auto& x : arr)
    {
        if (*(&x+1)%x != 0) return false;
    }
    return true;
}

I want it to work like that, but with a range-based for loop:

bool factorChain(std::vector<int> arr) {
    for(int i=0; i<arr.size()-1; i++)
    {
        if(arr[i+1]%arr[i]!=0) return false;
    }
    return true;
}