Build (method = -2) #dp: 185 Step-3' Graph: 27 vertices and 113 arcs (0.00s) Step-4' Graph: 14 vertices and 87 arcs (0.00s) #V4/#V3 = 0.52 #A4/#A3 = 0.77 Ready! (0.00s) Optimize a model with 32 rows, 88 columns and 242 nonzeros Presolve removed 8 rows and 9 columns Presolve time: 0.00s Presolved: 24 rows, 79 columns, 218 nonzeros Variable types: 0 continuous, 79 integer (0 binary) Found heuristic solution: objective 199.0000000 Optimize a model with 24 rows, 79 columns and 218 nonzeros Presolved: 24 rows, 79 columns, 218 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 9.200e+01 Factor NZ : 2.580e+02 Factor Ops : 3.556e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.53239357e+02 -9.40398656e+02 1.32e+03 5.55e-17 2.65e+01 0s 1 2.15993106e+02 -3.43552199e+02 1.11e+02 9.44e-16 4.34e+00 0s 2 1.25207193e+02 -2.76809701e+01 1.17e+00 4.88e-15 9.05e-01 0s 3 9.54963237e+01 7.13650466e+01 1.96e-02 5.00e-16 1.42e-01 0s 4 9.06594684e+01 8.58924055e+01 1.60e-03 4.51e-16 2.80e-02 0s 5 8.97309498e+01 8.86655391e+01 1.74e-04 4.94e-16 6.27e-03 0s 6 8.96499684e+01 8.95996906e+01 5.79e-05 3.74e-16 2.96e-04 0s 7 8.96275970e+01 8.96242584e+01 6.54e-06 4.16e-16 1.96e-05 0s 8 8.96250026e+01 8.96249993e+01 8.07e-12 4.65e-16 1.96e-08 0s 9 8.96250000e+01 8.96250000e+01 9.20e-12 5.29e-16 2.05e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 8.96250000e+01 Root relaxation: objective 8.962500e+01, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 89.62500 0 7 199.00000 89.62500 55.0% - 0s H 0 0 90.0000000 89.62500 0.42% - 0s Explored 0 nodes (49 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.000000000000e+01, best bound 9.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 90 Solution: 2 x [15] 1 x [6] 2 x [14, 17] 10 x [2, 13] 5 x [1, 11] 1 x [11, 18] 17 x [5, 18] 10 x [3, 7] 2 x [7, 7] 2 x [9, 12] 14 x [8, 12] 7 x [9, 13, 16] 12 x [5, 10, 17] 3 x [5, 13, 17] 1 x [4, 16] 1 x [4, 4, 16]