Build (method = -2) #dp: 9506 Step-3' Graph: 570 vertices and 3874 arcs (0.06s) Step-4' Graph: 563 vertices and 3860 arcs (0.07s) #V4/#V3 = 0.99 #A4/#A3 = 1.00 Ready! (0.07s) Optimize a model with 602 rows, 3861 columns and 10463 nonzeros Presolve removed 83 rows and 183 columns Presolve time: 0.09s Presolved: 519 rows, 3678 columns, 10136 nonzeros Variable types: 0 continuous, 3678 integer (253 binary) Found heuristic solution: objective 337.0000000 Found heuristic solution: objective 308.0000000 Optimize a model with 519 rows, 3678 columns and 10136 nonzeros Presolved: 519 rows, 3678 columns, 10136 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 6.595e+03 Factor NZ : 3.856e+04 (roughly 2 MBytes of memory) Factor Ops : 5.378e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.50938957e+04 -1.19512368e+05 2.25e+05 1.14e-01 3.61e+02 0s 1 3.40733621e+03 -6.96265813e+04 3.27e+04 1.64e-14 5.71e+01 0s 2 9.86035439e+02 -3.00110550e+04 3.61e+03 3.11e-14 8.55e+00 0s 3 7.00899166e+02 -8.94472731e+03 5.83e+02 1.10e-14 1.83e+00 0s 4 5.55513772e+02 -3.34153668e+03 2.34e+02 9.33e-15 6.97e-01 0s 5 4.86354061e+02 -1.63095664e+03 9.31e+01 9.71e-15 3.37e-01 0s 6 4.31144553e+02 -9.89313712e+02 3.62e+01 1.24e-14 2.08e-01 0s 7 3.75444200e+02 -5.65973858e+02 1.94e+01 1.32e-14 1.34e-01 0s 8 3.51327362e+02 -3.50849147e+02 1.23e+01 1.28e-14 9.86e-02 0s 9 3.13234999e+02 -3.40386901e+02 8.27e+00 1.66e-14 9.10e-02 0s 10 2.82017877e+02 -2.45737936e+02 6.14e+00 1.79e-14 7.32e-02 0s 11 2.29045895e+02 -7.43999124e+01 2.70e+00 1.25e-14 4.18e-02 0s 12 2.16781207e+02 1.84647144e+01 2.15e+00 1.27e-14 2.73e-02 0s 13 1.89030369e+02 1.08671113e+02 9.54e-01 8.38e-15 1.11e-02 0s 14 1.73113528e+02 1.50060182e+02 3.23e-01 9.16e-15 3.17e-03 0s 15 1.65687975e+02 1.56738608e+02 6.83e-02 8.50e-15 1.22e-03 0s 16 1.63981005e+02 1.59782755e+02 1.14e-02 1.10e-14 5.71e-04 0s 17 1.63507453e+02 1.63374979e+02 8.72e-05 9.24e-15 1.80e-05 0s 18 1.63500008e+02 1.63499875e+02 6.96e-13 1.00e-14 1.80e-08 0s 19 1.63500000e+02 1.63500000e+02 5.08e-13 6.95e-15 1.80e-11 0s Barrier solved model in 19 iterations and 0.18 seconds Optimal objective 1.63500000e+02 Root relaxation: objective 1.635000e+02, 1225 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 163.50000 0 22 308.00000 163.50000 46.9% - 0s H 0 0 165.0000000 163.50000 0.91% - 0s H 0 0 164.0000000 163.50000 0.30% - 0s Explored 0 nodes (2903 simplex iterations) in 0.50 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.640000000000e+02, best bound 1.640000000000e+02, gap 0.0% Preprocessing time: 0.09 seconds Gurobi run time: 0.50 seconds Total run time: 0.58 seconds Objective: 164 Solution: 9 x [8, 25] 9 x [32, 38] 10 x [14, 17, 33] 3 x [2, 32] 1 x [2, 4, 32] 1 x [2, 4, 4, 32] 2 x [2, 16] 4 x [2, 6, 37] 3 x [25, 28] 2 x [21, 28] 3 x [16, 28] 1 x [28, 34] 1 x [28, 34, 34] 5 x [14, 25, 27] 5 x [22] 4 x [17, 22] 1 x [18, 37] 3 x [11, 12] 8 x [6, 11, 34] 7 x [3, 31] 7 x [5, 30] 3 x [9, 20] 4 x [26, 39] 5 x [20, 35] 1 x [29] 8 x [29, 29] 1 x [20, 26] 3 x [7, 26] 5 x [3, 26] 10 x [13, 24, 37] 1 x [23, 23] 9 x [15, 15, 23, 23] 1 x [5, 10, 20] 2 x [3, 20] 3 x [3, 19] 8 x [19, 21, 36] 1 x [5, 13] 6 x [1, 13, 21] 2 x [7, 7, 16] 2 x [1, 16, 36]