Build (method = -2) #dp: 66 Step-3' Graph: 11 vertices and 35 arcs (0.00s) Step-4' Graph: 9 vertices and 31 arcs (0.00s) #V4/#V3 = 0.82 #A4/#A3 = 0.89 Ready! (0.00s) Optimize a model with 19 rows, 32 columns and 85 nonzeros Presolve removed 6 rows and 6 columns Presolve time: 0.00s Presolved: 13 rows, 26 columns, 69 nonzeros Variable types: 0 continuous, 26 integer (0 binary) Found heuristic solution: objective 999.0000000 Found heuristic solution: objective 772.0000000 Optimize a model with 13 rows, 26 columns and 69 nonzeros Presolved: 13 rows, 26 columns, 69 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.200e+01 Factor NZ : 9.100e+01 Factor Ops : 8.190e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.99080570e+03 -2.05461332e+03 1.02e+03 2.22e-16 1.49e+02 0s 1 9.27104257e+02 -1.21218025e+02 6.05e+01 2.22e-16 2.02e+01 0s 2 7.29186451e+02 3.37768734e+02 1.14e+01 4.44e-15 6.89e+00 0s 3 6.17966871e+02 5.75431628e+02 1.14e-13 3.33e-16 7.33e-01 0s 4 5.97618259e+02 5.96958732e+02 7.11e-14 2.22e-16 1.14e-02 0s 5 5.97500002e+02 5.97499997e+02 2.27e-13 2.79e-17 9.03e-08 0s 6 5.97500000e+02 5.97500000e+02 3.41e-13 1.28e-16 9.08e-14 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 5.97500000e+02 Root relaxation: objective 5.975000e+02, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 597.50000 0 2 772.00000 597.50000 22.6% - 0s H 0 0 598.0000000 597.50000 0.08% - 0s Explored 0 nodes (14 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.980000000000e+02, best bound 5.980000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 598 Solution: 128 x [7] 83 x [6, 9] 128 x [4] 81 x [8, 10] 71 x [1, 2] 1 x [2, 3] 26 x [1, 3] 1 x [3] 18 x [5, 5] 19 x [5, 5, 9] 42 x [5, 5, 8]