Build (method = -2) #dp: 153 Step-3' Graph: 31 vertices and 86 arcs (0.00s) Step-4' Graph: 25 vertices and 74 arcs (0.00s) #V4/#V3 = 0.81 #A4/#A3 = 0.86 Ready! (0.00s) Optimize a model with 35 rows, 75 columns and 179 nonzeros Presolve removed 12 rows and 22 columns Presolve time: 0.00s Presolved: 23 rows, 53 columns, 147 nonzeros Variable types: 0 continuous, 53 integer (0 binary) Optimize a model with 23 rows, 53 columns and 147 nonzeros Presolved: 23 rows, 53 columns, 147 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.050e+02 Factor NZ : 2.220e+02 Factor Ops : 2.596e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.65259935e+02 -1.46320919e+03 1.41e+03 1.63e-02 7.33e+01 0s 1 4.06970138e+02 -4.59791032e+02 2.01e+02 3.55e-02 1.37e+01 0s 2 2.67045411e+02 1.09389246e+02 1.20e+01 2.11e-03 1.73e+00 0s 3 2.45539948e+02 2.28431324e+02 6.63e-01 2.50e-16 1.71e-01 0s 4 2.45011885e+02 2.44939800e+02 3.39e-03 8.91e-17 7.08e-04 0s 5 2.45000000e+02 2.45000000e+02 1.58e-11 3.86e-17 2.06e-09 0s 6 2.45000000e+02 2.45000000e+02 1.17e-12 1.11e-16 2.10e-15 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.45000000e+02 Root relaxation: objective 2.450000e+02, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 245.0000000 245.00000 0.0% - 0s Explored 0 nodes (40 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.450000000000e+02, best bound 2.450000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 245 Solution: 3 x [1] 7 x [1, 2] 17 x [1, 2, 5, 10] 9 x [1, 3, 4, 5] 23 x [1, 3, 4, 5, 7, 8] 56 x [1, 3, 5] 87 x [1, 3, 5, 7] 33 x [1, 3, 5, 7, 8, 9] 3 x [1, 5] 7 x [1, 5, 6]