Build (method = -2) #dp: 807 Step-3' Graph: 216 vertices and 641 arcs (0.01s) Step-4' Graph: 53 vertices and 315 arcs (0.01s) #V4/#V3 = 0.25 #A4/#A3 = 0.49 Ready! (0.01s) Optimize a model with 93 rows, 316 columns and 846 nonzeros Presolve removed 28 rows and 45 columns Presolve time: 0.00s Presolved: 65 rows, 271 columns, 741 nonzeros Variable types: 0 continuous, 271 integer (30 binary) Found heuristic solution: objective 289.0000000 Optimize a model with 65 rows, 271 columns and 741 nonzeros Presolved: 65 rows, 271 columns, 741 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.830e+02 Factor NZ : 1.115e+03 Factor Ops : 2.209e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.33820213e+03 -5.29135227e+03 7.09e+03 1.76e-01 7.92e+01 0s 1 1.02983273e+03 -2.10640867e+03 1.10e+03 7.77e-16 1.43e+01 0s 2 3.77333644e+02 -5.05547834e+02 9.26e+01 5.55e-16 2.07e+00 0s 3 2.73887958e+02 3.97717194e+01 1.04e+01 6.66e-16 4.46e-01 0s 4 2.10346798e+02 1.39327452e+02 4.50e-01 3.68e-16 1.28e-01 0s 5 2.00537831e+02 1.83777513e+02 1.24e-01 3.33e-16 3.00e-02 0s 6 1.97762140e+02 1.92160552e+02 4.51e-02 2.54e-16 1.00e-02 0s 7 1.96616513e+02 1.95824093e+02 8.37e-03 2.97e-16 1.42e-03 0s 8 1.96335628e+02 1.96331645e+02 3.71e-06 3.33e-16 7.11e-06 0s 9 1.96333333e+02 1.96333333e+02 8.28e-12 2.81e-16 2.08e-11 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.96333333e+02 Root relaxation: objective 1.963333e+02, 87 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 196.33333 0 7 289.00000 196.33333 32.1% - 0s H 0 0 197.0000000 196.33333 0.34% - 0s Explored 0 nodes (109 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.970000000000e+02, best bound 1.970000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 197 Solution: 9 x [1] 5 x [1, 40] 3 x [2, 39] 6 x [3, 37] 2 x [4, 38] 7 x [5, 37] 13 x [6, 36] 2 x [6, 39] 10 x [7, 35] 13 x [8, 30] 1 x [9, 29] 3 x [9, 32] 9 x [10, 31] 16 x [11, 26] 14 x [12, 29] 1 x [13, 28] 6 x [13, 32] 2 x [14, 24] 5 x [15, 24] 14 x [16, 23] 2 x [16, 24] 1 x [17, 24] 9 x [17, 25] 6 x [18, 21] 8 x [18, 22] 1 x [19, 20] 6 x [19, 21] 6 x [19, 24] 3 x [19, 35, 39] 4 x [22, 33, 38] 1 x [22, 35, 39] 6 x [27, 33, 34] 2 x [32, 34, 35] 1 x [34]