Build (method = -2) #dp: 327 Step-3' Graph: 30 vertices and 148 arcs (0.00s) Step-4' Graph: 24 vertices and 136 arcs (0.00s) #V4/#V3 = 0.80 #A4/#A3 = 0.92 Ready! (0.00s) Optimize a model with 58 rows, 137 columns and 367 nonzeros Presolve removed 29 rows and 32 columns Presolve time: 0.00s Presolved: 29 rows, 105 columns, 279 nonzeros Variable types: 0 continuous, 105 integer (38 binary) Found heuristic solution: objective 43.0000000 Found heuristic solution: objective 38.0000000 Optimize a model with 29 rows, 105 columns and 279 nonzeros Presolved: 29 rows, 105 columns, 279 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.470e+02 Factor NZ : 3.790e+02 Factor Ops : 6.091e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.55779477e+02 -2.83135501e+02 2.68e+02 1.65e-01 8.99e+00 0s 1 8.57107758e+01 -8.30758804e+01 3.85e+01 5.55e-16 1.53e+00 0s 2 4.71947960e+01 6.02619613e+00 3.18e+00 5.55e-16 2.27e-01 0s 3 3.76061841e+01 2.51208444e+01 3.99e-01 1.67e-15 6.02e-02 0s 4 3.53744103e+01 2.96511293e+01 9.54e-02 5.55e-16 2.71e-02 0s 5 3.38609092e+01 3.08412776e+01 3.50e-02 3.33e-16 1.42e-02 0s 6 3.31913155e+01 3.15306448e+01 1.77e-02 2.78e-16 7.79e-03 0s 7 3.30488296e+01 3.28080860e+01 5.20e-03 2.22e-16 1.13e-03 0s 8 3.30007199e+01 3.29974454e+01 4.95e-14 2.22e-16 1.53e-05 0s 9 3.30000000e+01 3.30000000e+01 2.43e-14 2.91e-16 1.17e-10 0s 10 3.30000000e+01 3.30000000e+01 1.44e-14 2.22e-16 1.17e-13 0s Barrier solved model in 10 iterations and 0.00 seconds Optimal objective 3.30000000e+01 Root relaxation: objective 3.300000e+01, 54 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 33.0000000 33.00000 0.0% - 0s Explored 0 nodes (54 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 33 Solution: 2 x [34] 1 x [33] 2 x [32] 3 x [31] 1 x [30] 2 x [29] 2 x [28] 1 x [27] 1 x [26] 1 x [25] 1 x [24] 1 x [2, 23] 1 x [1, 22] 3 x [5, 21] 1 x [6, 20] 1 x [5, 20] 1 x [7, 19] 1 x [3, 18] 1 x [10, 17] 1 x [9, 16] 1 x [8, 15] 1 x [7, 14] 2 x [11, 13] 1 x [4, 6, 12]