How to create two dimensional array in Promela?

To create matrix in C we need to write:

int[][] a = {{1,2,3},{1,2,3},{1,2,3}}

How can I create a matrix in Promela?

From the docs:

Multidimensional arrays can be constructed indirectly with the use of typedef definitions.

Also from the docs:

EXAMPLES

The first example shows how to declare a two-dimensional array of elements of type byte with a typedef.

typedef array { /* typedefs must be global */
    byte aa[4]
};
init {
    array a[8];   /* 8x4 = 32 bytes total */
    a[3].aa[1] = 5
}

A better approach is to use one-dimensional arrays.