Build (method = -2) #dp: 812 Step-3' Graph: 152 vertices and 449 arcs (0.01s) Step-4' Graph: 52 vertices and 249 arcs (0.01s) #V4/#V3 = 0.34 #A4/#A3 = 0.55 Ready! (0.01s) Optimize a model with 91 rows, 250 columns and 650 nonzeros Presolve removed 25 rows and 33 columns Presolve time: 0.00s Presolved: 66 rows, 217 columns, 575 nonzeros Variable types: 0 continuous, 217 integer (19 binary) Found heuristic solution: objective 307.0000000 Found heuristic solution: objective 279.0000000 Optimize a model with 66 rows, 217 columns and 575 nonzeros Presolved: 66 rows, 217 columns, 575 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.340e+02 Factor NZ : 1.147e+03 Factor Ops : 2.312e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.98208595e+03 -6.14894081e+03 8.96e+03 1.44e-01 1.33e+02 0s 1 1.05734737e+03 -2.27254629e+03 1.58e+03 6.66e-16 2.44e+01 0s 2 3.64537099e+02 -5.93031154e+02 1.09e+02 2.11e-15 3.04e+00 0s 3 2.59121614e+02 -3.28362794e-01 4.36e+00 1.17e-15 5.95e-01 0s 4 2.04598023e+02 1.27756559e+02 8.09e-01 8.88e-16 1.73e-01 0s 5 1.89780301e+02 1.67727495e+02 3.16e-01 1.78e-15 4.95e-02 0s 6 1.85069087e+02 1.78392260e+02 5.42e-02 1.55e-15 1.49e-02 0s 7 1.83977887e+02 1.81090118e+02 1.79e-02 2.44e-15 6.43e-03 0s 8 1.83352513e+02 1.82405697e+02 6.39e-04 1.30e-15 2.10e-03 0s 9 1.83260840e+02 1.83231931e+02 8.95e-05 1.25e-15 6.42e-05 0s 10 1.83250012e+02 1.83249979e+02 6.12e-11 1.10e-15 7.33e-08 0s 11 1.83250000e+02 1.83250000e+02 1.64e-10 1.12e-15 7.33e-11 0s Barrier solved model in 11 iterations and 0.00 seconds Optimal objective 1.83250000e+02 Root relaxation: objective 1.832500e+02, 52 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 183.25000 0 21 279.00000 183.25000 34.3% - 0s H 0 0 184.0000000 183.25000 0.41% - 0s Explored 0 nodes (84 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.840000000000e+02, best bound 1.840000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 184 Solution: 1 x [1] 8 x [2, 37] 11 x [2, 38] 3 x [3, 35] 8 x [3, 39] 9 x [4, 34] 10 x [5, 33] 9 x [6, 32] 1 x [6, 33] 8 x [7, 29] 2 x [8, 28] 8 x [9, 28] 2 x [10, 27] 1 x [10, 35] 2 x [11, 26] 2 x [11, 29] 10 x [12, 26] 12 x [13, 24] 9 x [14, 26] 11 x [15, 25] 16 x [16, 22] 3 x [17, 25] 5 x [17, 29] 3 x [18, 22] 2 x [18, 23] 1 x [19, 20] 1 x [19, 33] 1 x [19, 33, 37] 1 x [19, 36, 37] 11 x [20, 33, 34] 4 x [21, 32, 33] 7 x [30, 35, 38, 39] 1 x [31, 33, 38, 39] 1 x [33, 34]