Build (method = -2) #dp: 838 Step-3' Graph: 188 vertices and 601 arcs (0.00s) Step-4' Graph: 167 vertices and 555 arcs (0.01s) #V4/#V3 = 0.89 #A4/#A3 = 0.92 Ready! (0.01s) Optimize a model with 177 rows, 556 columns and 1338 nonzeros Presolve removed 99 rows and 267 columns Presolve time: 0.01s Presolved: 78 rows, 289 columns, 758 nonzeros Variable types: 0 continuous, 289 integer (0 binary) Found heuristic solution: objective 78.0000000 Optimize a model with 78 rows, 289 columns and 758 nonzeros Presolved: 78 rows, 289 columns, 758 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.240e+02 Factor NZ : 1.405e+03 Factor Ops : 2.993e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.73434207e+02 -3.66811787e+03 3.21e+03 2.22e-16 3.48e+01 0s 1 1.21713778e+02 -1.56905399e+03 3.97e+02 2.00e-15 5.59e+00 0s 2 9.15240528e+01 -4.08655520e+02 4.63e+01 1.08e-14 1.05e+00 0s 3 7.89960787e+01 -1.05170948e+02 6.07e+00 3.77e-15 3.30e-01 0s 4 7.22241194e+01 -2.87947031e+01 1.84e+00 1.11e-15 1.76e-01 0s 5 6.55202477e+01 2.98130352e+00 8.09e-01 9.87e-16 1.08e-01 0s 6 5.63458278e+01 3.37923081e+01 1.96e-01 1.55e-15 3.89e-02 0s 7 5.46056266e+01 5.08432305e+01 6.05e-02 8.47e-16 6.50e-03 0s 8 5.40008035e+01 5.39861450e+01 4.26e-14 8.78e-16 2.51e-05 0s 9 5.40000008e+01 5.39999861e+01 4.62e-14 9.11e-16 2.51e-08 0s 10 5.40000000e+01 5.40000000e+01 4.26e-14 8.26e-16 2.51e-11 0s Barrier solved model in 10 iterations and 0.00 seconds Optimal objective 5.40000000e+01 Root relaxation: objective 5.400000e+01, 164 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 54.0000000 54.00000 0.0% - 0s Explored 0 nodes (164 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 54 Solution: 13 x [6] 6 x [6, 9] 11 x [5, 7] 5 x [3] 5 x [3, 7] 7 x [2] 1 x [2, 4, 4] 1 x [2, 4, 4, 4, 4] 2 x [1, 1, 1, 1, 2, 4, 4, 4, 4] 1 x [2, 10] 2 x [8, 8]