How to get a non-duplicate randomized value from coverage?

Coverage
2

In reply to UVM_LOVE:

Randomizing only 5 times does not give a representative distribution. If you randomize more, you will see the results you expect:


module constr_dist;
  initial begin
    packet pkt;
    pkt = new();
    $display("------------------------------------");
    repeat (50) begin
      if (!pkt.randomize()) $display("Randomization error");
      else $display("const_img_index = %0d",pkt.img_index);
    end
    $display("------------------------------------");
    $display("------------------------------------");
  end
endmodule

Also, you don’t instantiate your covergroup anywhere, nor sample it, so you aren’t generating any coverage metrics.