Build (method = -2) #dp: 1060 Step-3' Graph: 159 vertices and 470 arcs (0.01s) Step-4' Graph: 68 vertices and 288 arcs (0.01s) #V4/#V3 = 0.43 #A4/#A3 = 0.61 Ready! (0.01s) Optimize a model with 128 rows, 289 columns and 735 nonzeros Presolve removed 37 rows and 38 columns Presolve time: 0.00s Presolved: 91 rows, 251 columns, 624 nonzeros Variable types: 0 continuous, 251 integer (7 binary) Found heuristic solution: objective 286.0000000 Found heuristic solution: objective 263.0000000 Optimize a model with 91 rows, 251 columns and 624 nonzeros Presolved: 91 rows, 251 columns, 624 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.060e+02 Factor NZ : 1.242e+03 Factor Ops : 1.921e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.83966286e+03 -6.27809082e+03 3.46e+03 1.17e-01 7.97e+01 0s 1 8.66636980e+02 -2.14233943e+03 5.05e+02 5.55e-16 1.29e+01 0s 2 3.51251047e+02 -5.75931728e+02 5.04e+01 8.88e-15 2.29e+00 0s 3 2.74679991e+02 7.01109243e+00 3.72e+00 1.11e-15 5.26e-01 0s 4 2.45140655e+02 1.54629249e+02 6.52e-01 2.22e-16 1.73e-01 0s 5 2.28246143e+02 1.90303728e+02 2.19e-01 2.22e-16 7.24e-02 0s 6 2.19184323e+02 2.10561094e+02 4.19e-02 2.22e-16 1.64e-02 0s 7 2.17090357e+02 2.15832728e+02 5.08e-03 3.33e-16 2.40e-03 0s 8 2.16751422e+02 2.16747686e+02 4.80e-06 2.22e-16 7.11e-06 0s 9 2.16750000e+02 2.16750000e+02 5.06e-12 2.22e-16 7.42e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.16750000e+02 Root relaxation: objective 2.167500e+02, 94 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 216.75000 0 10 263.00000 216.75000 17.6% - 0s H 0 0 217.0000000 216.75000 0.12% - 0s Explored 0 nodes (123 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.170000000000e+02, best bound 2.170000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 217 Solution: 6 x [2] 2 x [18] 2 x [22] 8 x [33] 10 x [34] 4 x [39] 8 x [46] 5 x [54] 10 x [6] 3 x [10] 5 x [12] 10 x [28] 8 x [36] 2 x [50] 1 x [43, 50] 4 x [20, 59] 5 x [7, 27] 6 x [8, 35] 9 x [14] 9 x [23] 9 x [49] 1 x [35, 52] 4 x [52, 53] 7 x [13, 55] 1 x [35, 58] 4 x [30, 58] 9 x [60] 5 x [1, 32] 2 x [4, 32] 4 x [16, 21] 9 x [11, 37] 1 x [11, 51] 1 x [51, 57] 1 x [9, 19] 1 x [9, 26] 1 x [9, 47] 6 x [15, 47] 6 x [3, 5] 1 x [5, 43, 56] 1 x [5, 44, 45] 1 x [9, 40, 45] 4 x [9, 48] 1 x [9, 41, 57] 2 x [16, 17, 32] 1 x [17, 32] 2 x [24, 38, 57] 8 x [25, 29] 2 x [31, 40] 5 x [31, 42, 44]