Build (method = -2) #dp: 2692 Step-3' Graph: 112 vertices and 365 arcs (0.01s) Step-4' Graph: 60 vertices and 261 arcs (0.01s) #V4/#V3 = 0.54 #A4/#A3 = 0.72 Ready! (0.01s) Optimize a model with 70 rows, 262 columns and 676 nonzeros Presolve removed 17 rows and 32 columns Presolve time: 0.00s Presolved: 53 rows, 230 columns, 621 nonzeros Variable types: 0 continuous, 230 integer (0 binary) Found heuristic solution: objective 76.0000000 Found heuristic solution: objective 47.0000000 Optimize a model with 53 rows, 230 columns and 621 nonzeros Presolved: 53 rows, 230 columns, 621 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.340e+02 Factor NZ : 9.560e+02 Factor Ops : 2.027e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.03169498e+02 -3.01586420e+03 2.37e+03 2.22e-16 4.32e+01 0s 1 2.03206129e+02 -1.32735018e+03 3.68e+02 8.88e-16 7.64e+00 0s 2 8.44351972e+01 -3.64231629e+02 3.51e+01 5.83e-16 1.22e+00 0s 3 4.88785982e+01 -7.76615349e+01 1.65e-01 5.83e-16 2.70e-01 0s 4 2.56486822e+01 -1.58013252e+01 5.49e-02 5.24e-16 8.83e-02 0s 5 1.63234431e+01 1.48296619e-01 1.95e-02 6.59e-16 3.45e-02 0s 6 1.62200622e+01 8.93314275e+00 1.21e-02 3.97e-16 1.55e-02 0s 7 1.46246976e+01 1.36646580e+01 1.20e-03 5.39e-16 2.04e-03 0s 8 1.42863694e+01 1.42850126e+01 2.88e-14 4.74e-16 2.89e-06 0s 9 1.42857143e+01 1.42857143e+01 1.62e-14 4.04e-16 2.92e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.42857143e+01 Root relaxation: objective 1.428571e+01, 151 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.28571 0 20 47.00000 14.28571 69.6% - 0s H 0 0 15.0000000 14.28571 4.76% - 0s Explored 0 nodes (198 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 15 Solution: 3 x [2, 4, 6, 6, 6, 9, 9] 1 x [2, 4, 5, 5, 6, 6] 1 x [5, 6, 10, 10, 10] 1 x [1, 6, 9, 10, 10, 10, 10] 1 x [1, 6, 10, 10, 10, 10] 1 x [3, 3, 3, 3, 3, 7] 1 x [3, 3, 3, 3, 3, 3, 7] 6 x [1, 2, 2, 5, 6, 8, 9]