Build (method = -2) #dp: 147 Step-3' Graph: 29 vertices and 78 arcs (0.00s) Step-4' Graph: 5 vertices and 30 arcs (0.00s) #V4/#V3 = 0.17 #A4/#A3 = 0.38 Ready! (0.00s) Optimize a model with 14 rows, 31 columns and 89 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 12 rows, 29 columns, 85 nonzeros Variable types: 0 continuous, 29 integer (0 binary) Found heuristic solution: objective 999.0000000 Found heuristic solution: objective 993.0000000 Optimize a model with 12 rows, 29 columns and 85 nonzeros Presolved: 12 rows, 29 columns, 85 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.000e+01 Factor NZ : 7.800e+01 Factor Ops : 6.500e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.13570354e+03 -2.61730857e+03 2.86e+02 1.11e-16 1.57e+02 0s 1 7.10466562e+02 -8.08125027e+02 1.49e+01 3.33e-16 2.55e+01 0s 2 3.84532779e+02 1.89499742e+02 9.50e-03 1.61e-15 2.92e+00 0s 3 3.34581782e+02 3.10079976e+02 4.02e-05 2.22e-16 3.66e-01 0s 4 3.33390146e+02 3.33056536e+02 2.27e-13 1.11e-16 4.98e-03 0s 5 3.33333333e+02 3.33333331e+02 7.58e-14 2.22e-16 4.26e-08 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+02 Root relaxation: objective 3.333333e+02, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 333.33333 0 4 993.00000 333.33333 66.4% - 0s H 0 0 334.0000000 333.33333 0.20% - 0s Explored 0 nodes (25 simplex iterations) in 0.00 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: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 334 Solution: 7 x [3, 7, 8] 2 x [3, 4, 5] 4 x [2, 3, 4] 137 x [1, 3, 7] 35 x [1, 5, 6] 1 x [5, 7] 16 x [5, 6, 7] 1 x [5, 6] 75 x [5, 6, 9] 54 x [1, 2, 4] 1 x [2, 6, 7] 1 x [6, 7, 9]