Constraint for two dimensional array odd numbers in ascending order

SystemVerilog
1

HI All,

I am trying to generate the odd numbers in an ascending order in this format
1 3 5 7 9 11…
basically, the difference between each two element is exactly two.
I am getting randomization failure, could you please suggest?

Thank you,


module m1;
  class packet;
    rand bit [3:0] array[2][3];
    constraint c2{
      foreach(array[i,j])
        if(i==0 && j==0)
          array[i][j]==1;
      else
        array[i][j]==array[i][j]+2;
    }
    function void post_randomize();
        $display("%0p", array);
    endfunction
  endclass
  packet pkt;
  initial begin
    pkt = new;
    repeat (1) begin
      pkt.randomize();
    end
  end
endmodule
2

This expression can never be true. If you have the element array[i][j], what is the definition of the next element when you have a two dimensional array?