Build (method = -2) #dp: 1352 Step-3' Graph: 229 vertices and 680 arcs (0.01s) Step-4' Graph: 145 vertices and 512 arcs (0.01s) #V4/#V3 = 0.63 #A4/#A3 = 0.75 Ready! (0.01s) Optimize a model with 165 rows, 513 columns and 1253 nonzeros Presolve removed 19 rows and 35 columns Presolve time: 0.00s Presolved: 146 rows, 478 columns, 1210 nonzeros Variable types: 0 continuous, 478 integer (0 binary) Found heuristic solution: objective 432.0000000 Optimize a model with 146 rows, 478 columns and 1210 nonzeros Presolved: 146 rows, 478 columns, 1210 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.630e+02 Factor NZ : 3.515e+03 Factor Ops : 1.006e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.86345002e+03 -2.05050583e+04 1.82e+04 1.11e-16 1.03e+02 0s 1 8.64438144e+02 -8.34151036e+03 3.13e+03 9.99e-16 2.10e+01 0s 2 5.70067934e+02 -1.87384431e+03 5.86e+02 8.33e-16 4.14e+00 0s 3 4.39252162e+02 -2.71476446e+02 6.82e+01 6.66e-16 8.50e-01 0s 4 3.90436515e+02 2.93346650e+01 1.38e+01 1.03e-15 3.87e-01 0s 5 3.60107205e+02 2.18562303e+02 6.57e+00 9.99e-16 1.50e-01 0s 6 3.51595809e+02 2.64990758e+02 3.85e+00 5.05e-16 9.12e-02 0s 7 3.40934741e+02 2.89765374e+02 2.10e+00 9.99e-16 5.37e-02 0s 8 3.32026819e+02 3.08863776e+02 8.12e-01 7.86e-16 2.42e-02 0s 9 3.27385283e+02 3.24896890e+02 4.75e-02 7.90e-16 2.58e-03 0s 10 3.27007918e+02 3.26988815e+02 1.46e-05 7.69e-16 1.97e-05 0s 11 3.27000000e+02 3.27000000e+02 4.25e-11 7.78e-16 5.67e-11 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 3.27000000e+02 Root relaxation: objective 3.270000e+02, 221 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 327.0000000 327.00000 0.0% - 0s Explored 0 nodes (275 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.270000000000e+02, best bound 3.270000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.04 seconds Objective: 327 Solution: 75 x [7] 6 x [8] 29 x [3, 8] 33 x [6, 8, 18] 4 x [12, 13, 16] 34 x [12, 16, 19] 7 x [2, 9, 16] 41 x [2, 16, 20] 8 x [2, 10, 16, 18] 3 x [1, 15] 17 x [2, 11, 12, 15] 10 x [1, 4] 8 x [1, 4, 20] 6 x [1, 3, 4, 12] 16 x [1, 5, 14] 5 x [1, 3, 12, 14] 13 x [4, 14, 17] 1 x [4, 5, 14] 5 x [2, 4, 5, 14] 2 x [3, 4, 14] 4 x [3, 4, 14, 18]