Build (method = -2) #dp: 136 Step-3' Graph: 27 vertices and 75 arcs (0.00s) Step-4' Graph: 20 vertices and 61 arcs (0.00s) #V4/#V3 = 0.74 #A4/#A3 = 0.81 Ready! (0.00s) Optimize a model with 30 rows, 62 columns and 161 nonzeros Presolve removed 9 rows and 13 columns Presolve time: 0.00s Presolved: 21 rows, 49 columns, 129 nonzeros Variable types: 0 continuous, 49 integer (0 binary) Found heuristic solution: objective 882.0000000 Optimize a model with 21 rows, 49 columns and 129 nonzeros Presolved: 21 rows, 49 columns, 129 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.300e+01 Factor NZ : 1.860e+02 Factor Ops : 2.006e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.49025942e+03 -2.79631760e+03 1.32e+03 5.55e-17 8.57e+01 0s 1 7.88166827e+02 -3.52019730e+02 1.54e+01 2.78e-16 1.12e+01 0s 2 5.79158735e+02 3.28635374e+02 1.05e+00 1.94e-16 2.41e+00 0s 3 5.04579897e+02 4.72588831e+02 7.23e-02 2.22e-16 3.08e-01 0s 4 4.98100085e+02 4.95063211e+02 3.36e-03 1.95e-16 2.92e-02 0s 5 4.97500455e+02 4.97499251e+02 1.13e-06 1.11e-16 1.16e-05 0s 6 4.97500000e+02 4.97500000e+02 1.31e-12 2.22e-16 1.18e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 4.97500000e+02 Root relaxation: objective 4.975000e+02, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 497.50000 0 6 882.00000 497.50000 43.6% - 0s H 0 0 498.0000000 497.50000 0.10% - 0s Explored 0 nodes (24 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.980000000000e+02, best bound 4.980000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 498 Solution: 103 x [1, 9] 72 x [4, 8] 70 x [7, 10] 17 x [5, 10] 44 x [8, 10] 65 x [2, 6] 45 x [2, 3] 41 x [3, 6] 5 x [3, 6, 9] 1 x [3] 35 x [5, 5]