Build (method = -2) #dp: 5967 Step-3' Graph: 114 vertices and 1598 arcs (0.03s) Step-4' Graph: 83 vertices and 1536 arcs (0.03s) #V4/#V3 = 0.73 #A4/#A3 = 0.96 Ready! (0.03s) Optimize a model with 161 rows, 1537 columns and 4449 nonzeros Presolve removed 29 rows and 47 columns Presolve time: 0.04s Presolved: 132 rows, 1490 columns, 4339 nonzeros Variable types: 0 continuous, 1490 integer (216 binary) Found heuristic solution: objective 233.0000000 Found heuristic solution: objective 177.0000000 Optimize a model with 132 rows, 1490 columns and 4339 nonzeros Presolved: 132 rows, 1490 columns, 4339 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.697e+03 Factor NZ : 4.878e+03 Factor Ops : 2.424e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.29307291e+03 -3.31260702e+04 8.06e+04 2.74e-01 1.33e+02 0s 1 2.65462933e+03 -8.59142194e+03 1.30e+04 1.55e-15 2.19e+01 0s 2 5.04106590e+02 -3.41600479e+03 1.23e+03 2.02e-14 2.81e+00 0s 3 2.60934725e+02 -9.19178568e+02 1.36e+02 3.00e-15 4.99e-01 0s 4 2.07984457e+02 -2.99324467e+02 3.49e+01 1.11e-15 1.86e-01 0s 5 1.73588701e+02 -1.27154001e+02 2.00e+01 7.77e-16 1.07e-01 0s 6 1.36495950e+02 -2.57424444e+01 8.18e+00 6.66e-16 5.59e-02 0s 7 1.22207392e+02 4.49384115e+01 4.19e+00 3.86e-16 2.62e-02 0s 8 1.10551569e+02 7.81165815e+01 6.64e-01 4.19e-16 1.08e-02 0s 9 1.08072996e+02 9.75152359e+01 2.57e-01 3.33e-16 3.50e-03 0s 10 1.06004860e+02 1.01633267e+02 3.07e-02 4.44e-16 1.45e-03 0s 11 1.05316333e+02 1.03856228e+02 5.41e-03 3.39e-16 4.83e-04 0s 12 1.05057125e+02 1.04404661e+02 1.62e-03 4.44e-16 2.16e-04 0s 13 1.05022794e+02 1.04765434e+02 1.14e-03 4.42e-16 8.51e-05 0s 14 1.04958933e+02 1.04843604e+02 3.63e-04 4.03e-16 3.81e-05 0s 15 1.04923526e+02 1.04893532e+02 3.06e-05 3.33e-16 9.92e-06 0s 16 1.04918503e+02 1.04917783e+02 6.58e-07 3.33e-16 2.38e-07 0s 17 1.04918367e+02 1.04918367e+02 9.24e-14 5.55e-16 2.38e-10 0s 18 1.04918367e+02 1.04918367e+02 5.20e-14 5.55e-16 2.38e-13 0s Barrier solved model in 18 iterations and 0.02 seconds Optimal objective 1.04918367e+02 Root relaxation: objective 1.049184e+02, 194 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 104.91837 0 31 177.00000 104.91837 40.7% - 0s H 0 0 107.0000000 104.91837 1.95% - 0s H 0 0 106.0000000 104.91837 1.02% - 0s H 0 0 105.0000000 104.91837 0.08% - 0s Explored 0 nodes (884 simplex iterations) in 0.17 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.050000000000e+02, best bound 1.050000000000e+02, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.17 seconds Total run time: 0.22 seconds Objective: 105 Solution: 4 x [29, 78] 1 x [3, 6, 78] 1 x [30, 77] 1 x [31, 76] 1 x [30, 76] 1 x [5, 5, 76] 2 x [32, 75] 5 x [34, 74] 1 x [2, 12, 74] 4 x [35, 73] 1 x [36, 72] 4 x [37, 71] 1 x [2, 15, 71] 2 x [38, 70] 2 x [39, 69] 1 x [7, 11, 69] 3 x [40, 68] 1 x [1, 19, 68] 1 x [6, 13, 68] 2 x [41, 67] 3 x [42, 66] 4 x [43, 65] 1 x [10, 12, 65] 3 x [44, 64] 1 x [5, 18, 64] 1 x [8, 15, 64] 2 x [45, 63] 2 x [46, 62] 2 x [47, 61] 2 x [48, 60] 4 x [49, 59] 2 x [50, 58] 3 x [2, 28, 58] 2 x [13, 16, 58] 1 x [51, 57] 3 x [52, 56] 3 x [53, 55] 1 x [7, 21, 55] 2 x [54, 54] 1 x [4, 32, 52] 3 x [9, 26, 52] 1 x [6, 30, 51] 1 x [3, 30, 51] 2 x [9, 27, 51] 1 x [16, 20, 51] 2 x [17, 19, 51] 1 x [15, 25, 47] 2 x [19, 21, 47] 1 x [13, 25, 45] 1 x [22, 23, 42] 2 x [14, 32, 41] 1 x [23, 23, 41] 1 x [23, 26, 38] 1 x [22, 30, 35] 3 x [24, 30, 33]