Debugging array related error ( Assertion `(old_top == initial_top (av) && old_size == 0)) || [...]

I was working to implement the rod cutting problem and I encountered this error:

a.out: malloc.c:2392: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed.
Aborted (core dumped)

The dashed comment block is where I suspect the error is coming from, but I'm not sure why. Trying to run under gdb I am having hard time pin-pointing it (seems to be crashing at i = 7) (compiling using: g++)

#include <iostream>
#include <cstdlib>

using namespace std;

int max_from(int * arr, int n)
{
    int maxval = arr[1];
    for(size_t i = 2; i < n; ++i)
        if(arr[i] > maxval) maxval = arr[i];

    return maxval;
}

int main()
{
    int n = 11;

    int * V = new int[n]; // given arr, price at(i)
    int * C = new int[n]; // optimal at length(i)

    V[0] = 0; // non-affecting value, using 1 as starting point

    V[1] = 1;
    V[2] = 5;
    V[3] = 8;
    V[4] = 9;
    V[5] = 10;
    V[6] = 17;
    V[7] = 17;
    V[8] = 20;
    V[9] = 24;
    V[10] = 30;

    C[0] = 0;

    // --------------------------------------------------

    for(size_t i = 1; i < n; ++i)
    {
        int * arr = new int[i];
        for(size_t k = 1; k <= i; ++k)
        {
            arr[k] = V[k] + C[i-k];
        }

        C[i] = max_from(arr, n);

        delete [ ] arr;
    }

    cout << max_from(C, n) << '\n'; // maximized cost
    // --------------------------------------------------

    delete [ ] V;
    delete [ ] C;
}