Build (method = -2) #dp: 7024 Step-3' Graph: 120 vertices and 1650 arcs (0.03s) Step-4' Graph: 85 vertices and 1580 arcs (0.03s) #V4/#V3 = 0.71 #A4/#A3 = 0.96 Ready! (0.03s) Optimize a model with 166 rows, 1581 columns and 4579 nonzeros Presolve removed 28 rows and 46 columns Presolve time: 0.02s Presolved: 138 rows, 1535 columns, 4462 nonzeros Variable types: 0 continuous, 1535 integer (46 binary) Found heuristic solution: objective 450.0000000 Found heuristic solution: objective 347.0000000 Optimize a model with 138 rows, 1535 columns and 4462 nonzeros Presolved: 138 rows, 1535 columns, 4462 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.906e+03 Factor NZ : 5.306e+03 Factor Ops : 2.752e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.20363843e+03 -3.55089515e+04 8.56e+04 9.74e-02 9.08e+01 0s 1 2.51759770e+03 -8.81698031e+03 1.37e+04 6.66e-16 1.51e+01 0s 2 7.35306908e+02 -3.33922275e+03 1.82e+03 2.00e-14 2.62e+00 0s 3 4.27245868e+02 -9.95696108e+02 1.92e+02 5.55e-15 5.49e-01 0s 4 3.15415470e+02 -4.74777264e+02 5.26e+01 2.89e-15 2.72e-01 0s 5 2.56788982e+02 -8.00265648e+01 2.37e+01 1.11e-15 1.13e-01 0s 6 2.29044277e+02 4.49520791e+01 1.17e+01 6.66e-16 6.06e-02 0s 7 2.16239669e+02 1.39869859e+02 6.73e+00 9.57e-16 2.50e-02 0s 8 2.04535104e+02 1.75566353e+02 1.57e+00 1.26e-15 9.33e-03 0s 9 2.00193986e+02 1.89580479e+02 4.93e-01 9.59e-16 3.41e-03 0s 10 1.97587713e+02 1.94106423e+02 2.87e-02 9.66e-16 1.11e-03 0s 11 1.97144945e+02 1.96447339e+02 3.29e-03 1.01e-15 2.23e-04 0s 12 1.97051512e+02 1.97007690e+02 8.53e-14 1.15e-15 1.40e-05 0s 13 1.97046710e+02 1.97046304e+02 2.84e-14 1.33e-15 1.30e-07 0s 14 1.97046667e+02 1.97046667e+02 4.26e-13 1.22e-15 1.48e-13 0s Barrier solved model in 14 iterations and 0.02 seconds Optimal objective 1.97046667e+02 Root relaxation: objective 1.970467e+02, 648 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 197.04667 0 56 347.00000 197.04667 43.2% - 0s H 0 0 198.0000000 197.04667 0.48% - 0s Explored 0 nodes (1202 simplex iterations) in 0.13 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.980000000000e+02, best bound 1.980000000000e+02, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.13 seconds Total run time: 0.17 seconds Objective: 198 Solution: 7 x [31, 81] 5 x [2, 11, 80] 4 x [3, 10, 80] 3 x [33, 79] 1 x [31, 79] 2 x [2, 12, 79] 8 x [34, 78] 3 x [35, 77] 1 x [3, 13, 77] 3 x [36, 76] 4 x [6, 12, 75] 4 x [38, 74] 4 x [6, 13, 74] 3 x [39, 73] 1 x [40, 72] 6 x [1, 20, 72] 4 x [4, 17, 72] 5 x [41, 71] 3 x [42, 70] 6 x [43, 69] 5 x [44, 68] 1 x [2, 23, 68] 1 x [4, 21, 68] 2 x [45, 67] 1 x [2, 24, 67] 1 x [4, 23, 66] 5 x [9, 18, 66] 6 x [47, 65] 1 x [10, 18, 65] 5 x [48, 64] 1 x [8, 21, 64] 4 x [49, 63] 2 x [10, 20, 63] 5 x [14, 17, 62] 6 x [51, 61] 2 x [52, 60] 4 x [7, 26, 60] 1 x [13, 20, 60] 6 x [53, 59] 5 x [54, 58] 4 x [5, 30, 58] 4 x [55, 57] 4 x [1, 35, 57] 1 x [6, 31, 56] 3 x [14, 23, 56] 3 x [15, 22, 56] 2 x [4, 37, 52] 3 x [16, 25, 52] 1 x [20, 22, 51] 1 x [2, 41, 50] 2 x [14, 29, 50] 2 x [21, 22, 50] 4 x [5, 42, 46] 1 x [16, 31, 46] 3 x [8, 40, 45] 2 x [7, 43, 43] 1 x [19, 34, 40] 1 x [20, 33, 40] 1 x [25, 28, 40] 1 x [25, 29, 39] 1 x [26, 29, 38] 1 x [19, 38] 2 x [24, 32, 37] 5 x [27, 29, 37] 3 x [21, 36, 36] 1 x [2, 24]