Build (method = -2) #dp: 9853 Step-3' Graph: 163 vertices and 1388 arcs (0.05s) Step-4' Graph: 97 vertices and 1256 arcs (0.05s) #V4/#V3 = 0.60 #A4/#A3 = 0.90 Ready! (0.05s) Optimize a model with 182 rows, 1257 columns and 3582 nonzeros Presolve removed 28 rows and 30 columns Presolve time: 0.03s Presolved: 154 rows, 1227 columns, 3528 nonzeros Variable types: 0 continuous, 1227 integer (457 binary) Found heuristic solution: objective 165.0000000 Found heuristic solution: objective 128.0000000 Optimize a model with 154 rows, 1227 columns and 3528 nonzeros Presolved: 154 rows, 1227 columns, 3528 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.787e+03 Factor NZ : 5.426e+03 Factor Ops : 2.941e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.14653134e+04 -2.69983880e+04 1.55e+04 2.52e-01 1.23e+02 0s 1 2.98947450e+03 -5.07164619e+03 2.43e+03 8.88e-16 1.93e+01 0s 2 4.30274049e+02 -1.67317684e+03 1.58e+02 2.55e-15 1.82e+00 0s 3 2.01516113e+02 -5.12287353e+02 1.99e+01 6.66e-16 3.76e-01 0s 4 1.13509021e+02 -8.68879102e+01 2.74e+00 3.61e-16 8.81e-02 0s 5 8.57214819e+01 -5.99047396e+00 1.10e+00 3.33e-16 3.88e-02 0s 6 7.49253124e+01 2.99725950e+01 4.16e-01 4.44e-16 1.84e-02 0s 7 6.99379887e+01 5.70191030e+01 1.80e-01 3.54e-16 5.24e-03 0s 8 6.70629708e+01 6.31406758e+01 3.64e-02 2.65e-16 1.58e-03 0s 9 6.67129440e+01 6.64904719e+01 1.12e-13 3.33e-16 8.90e-05 0s 10 6.66667231e+01 6.66662199e+01 1.89e-13 3.33e-16 2.01e-07 0s 11 6.66666667e+01 6.66666667e+01 7.96e-13 5.55e-16 2.04e-13 0s Barrier solved model in 11 iterations and 0.02 seconds Optimal objective 6.66666667e+01 Root relaxation: objective 6.666667e+01, 1010 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66.66667 0 34 128.00000 66.66667 47.9% - 0s H 0 0 69.0000000 66.66667 3.38% - 0s H 0 0 67.0000000 66.66667 0.50% - 0s Explored 0 nodes (1748 simplex iterations) in 0.13 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.700000000000e+01, best bound 6.700000000000e+01, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.13 seconds Total run time: 0.19 seconds Objective: 67 Solution: 2 x [7, 38, 85] 2 x [5, 39, 84] 1 x [8, 38, 84] 1 x [11, 35, 84] 1 x [19, 26, 84] 1 x [17, 30, 83] 2 x [12, 36, 82] 1 x [14, 34, 82] 2 x [6, 40, 81] 1 x [15, 34, 81] 3 x [18, 32, 80] 1 x [20, 28, 80] 1 x [8, 42, 79] 1 x [9, 36, 78] 1 x [6, 38, 77] 2 x [13, 31, 77] 1 x [6, 38, 76] 2 x [8, 37, 76] 1 x [22, 29, 75] 2 x [24, 26, 74] 1 x [20, 35, 73] 1 x [26, 27, 73] 1 x [1, 52, 72] 2 x [4, 51, 72] 2 x [9, 47, 72] 1 x [1, 54, 71] 1 x [20, 37, 70] 1 x [24, 34, 69] 2 x [19, 41, 68] 2 x [2, 59, 67] 1 x [23, 32, 67] 1 x [5, 58, 66] 1 x [17, 47, 66] 1 x [21, 43, 66] 1 x [10, 54, 65] 1 x [8, 54, 65] 1 x [3, 63, 64] 1 x [9, 57, 64] 1 x [21, 64] 2 x [33, 35, 62] 1 x [10, 59, 61] 1 x [28, 40, 60] 3 x [16, 56, 58] 1 x [23, 39, 58] 1 x [22, 49, 55] 1 x [25, 45, 54] 1 x [23, 45, 53] 1 x [35, 44, 50] 1 x [34, 46, 48] 1 x [33, 46, 48] 1 x [39, 44, 45]