Build (method = -2) #dp: 89 Step-3' Graph: 21 vertices and 56 arcs (0.00s) Step-4' Graph: 14 vertices and 42 arcs (0.00s) #V4/#V3 = 0.67 #A4/#A3 = 0.75 Ready! (0.00s) Optimize a model with 24 rows, 43 columns and 105 nonzeros Presolve removed 11 rows and 16 columns Presolve time: 0.00s Presolved: 13 rows, 27 columns, 68 nonzeros Variable types: 0 continuous, 27 integer (0 binary) Found heuristic solution: objective 489.0000000 Optimize a model with 13 rows, 27 columns and 68 nonzeros Presolve removed 2 rows and 2 columns Presolved: 11 rows, 25 columns, 62 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.200e+01 Factor NZ : 6.600e+01 Factor Ops : 5.060e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.02958329e+03 -1.94161123e+03 7.17e+02 1.11e-16 1.30e+02 0s 1 6.14338312e+02 -2.22938708e+02 3.42e+01 4.44e-16 1.77e+01 0s 2 5.38913787e+02 3.25195672e+02 1.63e+00 5.22e-15 4.05e+00 0s 3 4.90234543e+02 4.55473909e+02 6.94e-02 4.44e-16 6.56e-01 0s 4 4.85050077e+02 4.82833440e+02 5.68e-14 1.11e-16 4.18e-02 0s 5 4.84518860e+02 4.84453506e+02 6.39e-14 4.78e-17 1.23e-03 0s 6 4.84500000e+02 4.84500000e+02 3.55e-14 1.11e-16 1.37e-09 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 4.84500000e+02 Root relaxation: objective 4.845000e+02, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 484.50000 0 7 489.00000 484.50000 0.92% - 0s H 0 0 485.0000000 484.50000 0.10% - 0s Explored 0 nodes (20 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.850000000000e+02, best bound 4.850000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 485 Solution: 24 x [1] 149 x [1, 7] 33 x [2, 9] 67 x [3] 12 x [3, 8] 56 x [3, 8, 9] 1 x [4, 5] 4 x [4, 5, 10] 76 x [4, 6] 62 x [5, 6, 9] 1 x [6]