Build (method = -2) #dp: 92 Step-3' Graph: 23 vertices and 62 arcs (0.00s) Step-4' Graph: 6 vertices and 28 arcs (0.00s) #V4/#V3 = 0.26 #A4/#A3 = 0.45 Ready! (0.00s) Optimize a model with 26 rows, 29 columns and 79 nonzeros Presolve removed 26 rows and 29 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.440000000000e+02, best bound 5.440000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 544 Solution: 20 x [15] 48 x [1] 25 x [7] 49 x [4] 19 x [8] 66 x [11] 13 x [17] 46 x [14] 44 x [16] 3 x [5] 19 x [3, 5] 4 x [13] 34 x [19] 49 x [20] 18 x [2, 3] 7 x [3, 9, 10] 1 x [3, 10] 45 x [18] 1 x [3, 12] 33 x [6]