Build (method = -2) #dp: 89 Step-3' Graph: 28 vertices and 77 arcs (0.00s) Step-4' Graph: 13 vertices and 47 arcs (0.00s) #V4/#V3 = 0.46 #A4/#A3 = 0.61 Ready! (0.00s) Optimize a model with 23 rows, 48 columns and 122 nonzeros Presolve removed 6 rows and 6 columns Presolve time: 0.00s Presolved: 17 rows, 42 columns, 106 nonzeros Variable types: 0 continuous, 42 integer (0 binary) Found heuristic solution: objective 768.0000000 Found heuristic solution: objective 648.0000000 Optimize a model with 17 rows, 42 columns and 106 nonzeros Presolved: 17 rows, 42 columns, 106 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.100e+01 Factor NZ : 1.530e+02 Factor Ops : 1.785e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.47048476e+03 -4.00716846e+03 2.99e+03 1.11e-16 2.13e+02 0s 1 9.01815894e+02 -1.24431348e+03 7.62e+01 3.33e-16 2.62e+01 0s 2 6.23954016e+02 -2.18733453e+02 4.89e+00 6.66e-16 9.44e+00 0s 3 4.97309702e+02 3.68302504e+02 9.05e-03 1.11e-16 1.43e+00 0s 4 4.48464271e+02 4.21784774e+02 1.56e-03 1.09e-16 2.96e-01 0s 5 4.40369470e+02 4.39478692e+02 6.22e-05 2.22e-16 9.90e-03 0s 6 4.40000035e+02 4.39999968e+02 1.25e-09 1.19e-16 7.40e-07 0s 7 4.40000000e+02 4.40000000e+02 1.78e-13 3.33e-16 7.48e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 4.40000000e+02 Root relaxation: objective 4.400000e+02, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 440.0000000 440.00000 0.0% - 0s Explored 0 nodes (13 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.400000000000e+02, best bound 4.400000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 440 Solution: 91 x [1, 10] 34 x [2, 5] 75 x [2, 6] 43 x [2, 8] 65 x [3, 4] 12 x [3, 7] 6 x [3, 7, 10] 20 x [3, 8, 10] 20 x [3, 9, 10] 74 x [5, 7, 9]