Build (method = -2) #dp: 14339 Step-3' Graph: 145 vertices and 480 arcs (0.07s) Step-4' Graph: 60 vertices and 310 arcs (0.07s) #V4/#V3 = 0.41 #A4/#A3 = 0.65 Ready! (0.07s) Optimize a model with 79 rows, 311 columns and 822 nonzeros Presolve removed 10 rows and 19 columns Presolve time: 0.00s Presolved: 69 rows, 292 columns, 792 nonzeros Variable types: 0 continuous, 292 integer (0 binary) Found heuristic solution: objective 1481.0000000 Optimize a model with 69 rows, 292 columns and 792 nonzeros Presolved: 69 rows, 292 columns, 792 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.290e+02 Factor NZ : 1.222e+03 Factor Ops : 2.444e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.09873565e+04 -7.12500384e+04 4.27e+04 2.22e-16 8.27e+02 0s 1 4.59296327e+03 -2.68093944e+04 4.63e+03 5.55e-16 1.13e+02 0s 2 1.76787359e+03 -7.78396152e+03 2.98e+02 1.11e-15 1.83e+01 0s 3 1.16323020e+03 -1.72736823e+03 3.22e+01 4.16e-16 4.90e+00 0s 4 5.09369833e+02 -3.50006458e+02 3.70e+00 3.33e-16 1.43e+00 0s 5 3.98709107e+02 1.38559653e+02 2.00e+00 2.22e-16 4.34e-01 0s 6 3.50053425e+02 2.84274298e+02 6.67e-01 2.22e-16 1.10e-01 0s 7 3.34977892e+02 3.29144304e+02 9.71e-06 2.22e-16 9.67e-03 0s 8 3.33336080e+02 3.33314121e+02 4.56e-13 2.22e-16 3.64e-05 0s 9 3.33333333e+02 3.33333333e+02 1.18e-12 3.33e-16 3.86e-11 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 3.33333333e+02 Root relaxation: objective 3.333333e+02, 199 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 333.33333 0 26 1481.00000 333.33333 77.5% - 0s H 0 0 334.0000000 333.33333 0.20% - 0s Explored 0 nodes (242 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.340000000000e+02, best bound 3.340000000000e+02, gap 0.0% Preprocessing time: 0.08 seconds Gurobi run time: 0.01 seconds Total run time: 0.09 seconds Objective: 334 Solution: 2 x [2, 4, 7, 9, 11, 17] 45 x [1, 1, 1, 2, 8, 14] 19 x [2, 3, 11, 12, 13, 17] 51 x [2, 5, 8, 11, 15, 18] 36 x [2, 2, 9, 10, 14, 17] 75 x [2, 2, 11, 12, 14, 16] 59 x [6, 7, 15, 19, 19, 19] 1 x [4, 6, 12, 17] 10 x [1, 6, 6, 6, 6, 11] 4 x [1, 6, 6, 6, 6, 9] 1 x [6, 6, 6, 6, 9] 1 x [4, 7, 9, 11, 17] 16 x [3, 9, 11, 12, 14, 17] 2 x [4, 8, 9, 10, 12, 13] 12 x [4, 5, 8, 9, 10, 12]