Build (method = -2) #dp: 3077 Step-3' Graph: 163 vertices and 481 arcs (0.01s) Step-4' Graph: 4 vertices and 163 arcs (0.01s) #V4/#V3 = 0.02 #A4/#A3 = 0.34 Ready! (0.01s) Optimize a model with 85 rows, 164 columns and 489 nonzeros Presolve removed 85 rows and 164 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 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 60 Solution: 1 x [50, 67] 1 x [46, 80] 1 x [46, 66] 1 x [34, 59] 1 x [34, 63] 1 x [61, 64] 1 x [64, 67] 1 x [4, 58] 1 x [4, 69] 1 x [41, 56] 1 x [41, 48] 1 x [51, 70] 3 x [44, 78] 1 x [43, 70] 1 x [31, 49] 1 x [33, 49] 1 x [26, 49] 1 x [25, 39] 1 x [16, 39] 1 x [36, 76] 1 x [36, 62] 1 x [36, 75] 1 x [32, 74] 1 x [32, 73] 1 x [21, 72] 3 x [71, 77] 1 x [21, 68] 1 x [19, 65] 1 x [19, 60] 1 x [17, 57] 1 x [17, 55] 1 x [17, 54] 1 x [14, 53] 1 x [14, 52] 1 x [13, 47] 1 x [13, 45] 1 x [13, 42] 1 x [11, 40] 1 x [11, 38] 1 x [11, 37] 1 x [10, 35] 1 x [10, 30] 1 x [9, 29] 1 x [9, 28] 1 x [7, 27] 1 x [7, 24] 1 x [6, 23] 1 x [6, 22] 1 x [3, 20] 1 x [3, 18] 1 x [1, 15] 1 x [1, 12] 1 x [8, 81] 1 x [5, 81] 1 x [2, 79] 1 x [78, 79]