Build (method = -2) #dp: 944 Step-3' Graph: 100 vertices and 293 arcs (0.00s) Step-4' Graph: 38 vertices and 169 arcs (0.00s) #V4/#V3 = 0.38 #A4/#A3 = 0.58 Ready! (0.00s) Optimize a model with 98 rows, 170 columns and 438 nonzeros Presolve removed 62 rows and 73 columns Presolve time: 0.00s Presolved: 36 rows, 97 columns, 238 nonzeros Variable types: 0 continuous, 97 integer (8 binary) Found heuristic solution: objective 3552.0000000 Found heuristic solution: objective 3440.0000000 Optimize a model with 36 rows, 97 columns and 238 nonzeros Presolved: 36 rows, 97 columns, 238 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.370e+02 Factor NZ : 4.520e+02 Factor Ops : 6.714e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.13370496e+03 -1.18036131e+04 1.31e+04 3.36e-02 3.04e+02 0s 1 3.73397273e+03 -2.84987563e+03 7.73e+02 5.00e-16 4.33e+01 0s 2 3.54534218e+03 9.43366176e+02 8.70e+01 1.78e-15 1.37e+01 0s 3 3.49428680e+03 2.90323400e+03 1.97e+00 1.11e-16 2.98e+00 0s 4 3.44668559e+03 3.40581759e+03 4.55e-13 1.11e-16 2.05e-01 0s 5 3.44050887e+03 3.43905673e+03 3.07e-12 1.39e-16 7.30e-03 0s Barrier performed 5 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds 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 3.440000000000e+03, best bound 3.440000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 3440 Solution: 39 x [8] 63 x [40] 65 x [23] 74 x [35] 1 x [4] 6 x [4, 41] 81 x [29] 90 x [55] 83 x [51] 73 x [28] 87 x [16] 60 x [46] 50 x [15] 51 x [19] 63 x [26] 44 x [9] 1 x [9, 44] 56 x [18] 67 x [34] 6 x [43] 97 x [10] 53 x [20] 83 x [24] 79 x [22] 83 x [7] 6 x [48] 93 x [27, 48] 15 x [50] 68 x [42] 83 x [2] 87 x [38] 60 x [45] 10 x [30, 41, 45] 58 x [6] 50 x [25] 11 x [11] 46 x [14] 1 x [32] 73 x [32, 53] 66 x [3] 72 x [57] 82 x [12] 57 x [59] 59 x [49] 6 x [52] 52 x [41, 52] 36 x [60] 28 x [41, 60] 73 x [5] 79 x [13] 84 x [39] 81 x [54] 82 x [21] 34 x [58] 24 x [33, 58] 48 x [31] 28 x [31, 37] 89 x [47] 81 x [56] 88 x [36] 62 x [1, 17] 13 x [17]