“…Because here we are looking to cover 80 3-way interactions but the total interactions covered is 74. These four choices of rows (1, 2, 3), (1,2,4), (1,3,4), (2,3,4) contain all eight possible values of the three parameters and remaining six choices contain only seven possible values of the three parameters. Given fixed values of n, k, and s, the covering arrays with budget constraints problem is to construct a covering array 3-CA(n, k, s) having large coverage measure µ.…”