Build (method = -2) #dp: 464 Step-3' Graph: 75 vertices and 218 arcs (0.00s) Step-4' Graph: 26 vertices and 120 arcs (0.00s) #V4/#V3 = 0.35 #A4/#A3 = 0.55 Ready! (0.00s) Optimize a model with 66 rows, 121 columns and 315 nonzeros Presolve removed 58 rows and 106 columns Presolve time: 0.00s Presolved: 8 rows, 15 columns, 29 nonzeros Variable types: 0 continuous, 15 integer (0 binary) Found heuristic solution: objective 1119.0000000 Optimize a model with 8 rows, 15 columns and 29 nonzeros Presolved: 8 rows, 15 columns, 29 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.400e+01 Factor NZ : 3.600e+01 Factor Ops : 2.040e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.17480706e+03 6.76411672e+02 6.84e+01 1.11e-16 2.59e+01 0s 1 1.09313910e+03 9.70892284e+02 1.37e-02 2.22e-16 3.55e+00 0s 2 1.07241150e+03 1.06644405e+03 3.10e-04 2.22e-16 1.71e-01 0s 3 1.07150223e+03 1.07149453e+03 1.42e-14 2.22e-16 2.20e-04 0s 4 1.07150000e+03 1.07149999e+03 1.78e-15 2.22e-16 2.20e-07 0s 5 1.07150000e+03 1.07150000e+03 0.00e+00 6.22e-17 2.20e-13 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 1.07150000e+03 Root relaxation: objective 1.071500e+03, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1071.50000 0 4 1119.00000 1071.50000 4.24% - 0s H 0 0 1072.0000000 1071.50000 0.05% - 0s Explored 0 nodes (13 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.072000000000e+03, best bound 1.072000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 1072 Solution: 33 x [18] 26 x [21] 11 x [32] 37 x [17] 3 x [13, 26] 33 x [2, 12] 36 x [8, 12] 41 x [6] 37 x [22] 49 x [23] 44 x [39] 19 x [34] 73 x [4] 3 x [35] 47 x [16] 1 x [13, 16] 6 x [13, 36] 20 x [38] 45 x [9] 28 x [28] 8 x [40] 4 x [12, 40] 21 x [37] 26 x [25, 37] 46 x [20] 44 x [3, 33] 35 x [14] 6 x [14, 33] 30 x [7, 30] 41 x [5] 6 x [7, 27] 44 x [1] 5 x [1, 19] 55 x [15, 24] 10 x [10, 11] 56 x [11, 29] 17 x [29, 31, 33] 6 x [15, 31, 33] 15 x [15, 29] 4 x [7, 15, 29] 1 x [7, 15]