Build (method = -2) #dp: 2361 Step-3' Graph: 135 vertices and 398 arcs (0.01s) Step-4' Graph: 4 vertices and 136 arcs (0.01s) #V4/#V3 = 0.03 #A4/#A3 = 0.34 Ready! (0.01s) Optimize a model with 71 rows, 137 columns and 407 nonzeros Presolve removed 71 rows and 137 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 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 50 Solution: 2 x [15, 53] 1 x [15, 43] 1 x [10, 14] 1 x [2, 13] 1 x [4, 12] 1 x [12, 42] 1 x [11, 47] 1 x [3, 10] 1 x [10, 41] 1 x [9, 33] 1 x [1, 8] 1 x [8, 39] 1 x [7, 67] 1 x [7, 38] 3 x [7, 17] 1 x [6, 30] 1 x [5, 25] 1 x [2, 66] 1 x [2, 37] 1 x [62, 65] 1 x [61, 64] 1 x [59, 63] 1 x [36, 62] 1 x [35, 61] 1 x [54, 60] 1 x [34, 59] 1 x [49, 58] 1 x [48, 57] 1 x [47, 56] 1 x [40, 55] 1 x [32, 54] 1 x [33, 52] 1 x [30, 51] 1 x [25, 50] 1 x [31, 49] 1 x [29, 48] 1 x [28, 47] 1 x [23, 46] 1 x [21, 45] 1 x [20, 44] 1 x [27, 40] 1 x [26, 33] 1 x [24, 30] 1 x [22, 25] 1 x [19, 23] 1 x [18, 21] 1 x [16, 20]