Build (method = -2) #dp: 1105 Step-3' Graph: 75 vertices and 225 arcs (0.00s) Step-4' Graph: 32 vertices and 139 arcs (0.00s) #V4/#V3 = 0.43 #A4/#A3 = 0.62 Ready! (0.00s) Optimize a model with 41 rows, 140 columns and 365 nonzeros Presolve removed 7 rows and 12 columns Presolve time: 0.00s Presolved: 34 rows, 128 columns, 343 nonzeros Variable types: 0 continuous, 128 integer (0 binary) Found heuristic solution: objective 99.0000000 Found heuristic solution: objective 93.0000000 Found heuristic solution: objective 80.0000000 Optimize a model with 34 rows, 128 columns and 343 nonzeros Presolved: 34 rows, 128 columns, 343 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.750e+02 Factor NZ : 4.070e+02 Factor Ops : 5.705e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.56458219e+02 -1.77072784e+03 1.14e+03 2.22e-16 3.83e+01 0s 1 1.63119471e+02 -8.02934926e+02 1.70e+02 5.55e-16 6.93e+00 0s 2 7.18471171e+01 -1.99606523e+02 6.37e+00 4.44e-16 1.09e+00 0s 3 3.54730853e+01 -2.44820835e+01 1.75e-02 4.16e-16 2.26e-01 0s 4 2.02863145e+01 1.29997106e+00 4.63e-03 2.22e-16 7.17e-02 0s 5 1.79726685e+01 1.32032380e+01 2.42e-03 3.33e-16 1.80e-02 0s 6 1.68371736e+01 1.64134126e+01 1.00e-05 3.33e-16 1.60e-03 0s 7 1.66667091e+01 1.66659123e+01 7.59e-09 2.22e-16 3.01e-06 0s 8 1.66666667e+01 1.66666659e+01 2.26e-13 2.22e-16 3.01e-09 0s 9 1.66666667e+01 1.66666667e+01 1.69e-13 1.70e-16 3.19e-15 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 82 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.66667 0 10 80.00000 16.66667 79.2% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (112 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 17 Solution: 1 x [1, 1, 4, 5, 7] 1 x [1, 1, 2, 4, 5, 6] 1 x [1, 1, 2, 4, 5] 3 x [2, 2, 4, 6, 7, 8] 5 x [1, 1, 4, 6, 7, 8] 4 x [2, 3, 3, 5, 5, 9] 2 x [2, 5, 5, 5, 6, 9]