Build (method = -2) #dp: 1922 Step-3' Graph: 81 vertices and 243 arcs (0.01s) Step-4' Graph: 38 vertices and 157 arcs (0.01s) #V4/#V3 = 0.47 #A4/#A3 = 0.65 Ready! (0.01s) Optimize a model with 48 rows, 158 columns and 404 nonzeros Presolve removed 12 rows and 23 columns Presolve time: 0.00s Presolved: 36 rows, 135 columns, 363 nonzeros Variable types: 0 continuous, 135 integer (0 binary) Found heuristic solution: objective 96.0000000 Found heuristic solution: objective 55.0000000 Optimize a model with 36 rows, 135 columns and 363 nonzeros Presolved: 36 rows, 135 columns, 363 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.790e+02 Factor NZ : 4.570e+02 Factor Ops : 6.867e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.12735241e+02 -2.37605751e+03 1.30e+03 2.22e-16 5.34e+01 0s 1 1.87193509e+02 -9.05952992e+02 1.13e+02 4.44e-16 6.85e+00 0s 2 7.83114081e+01 -1.73476708e+02 3.02e+00 1.22e-15 9.35e-01 0s 3 3.64732126e+01 -2.52136427e+01 2.07e-01 2.78e-16 2.21e-01 0s 4 2.08745481e+01 -5.56642506e+00 5.08e-02 3.16e-16 9.46e-02 0s 5 1.75935439e+01 1.20381574e+01 1.82e-02 2.22e-16 1.99e-02 0s 6 1.67397652e+01 1.64544916e+01 8.70e-04 2.22e-16 1.02e-03 0s 7 1.66666704e+01 1.66666386e+01 3.17e-08 2.22e-16 1.14e-07 0s 8 1.66666667e+01 1.66666666e+01 7.68e-15 3.33e-16 1.14e-10 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 85 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 8 55.00000 16.66667 69.7% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (92 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, 2, 3, 6, 8, 10] 1 x [1, 3, 6, 8, 10] 4 x [1, 3, 5, 5, 9, 9] 6 x [1, 2, 3, 7, 7, 8] 1 x [1, 1, 3, 4, 7, 7] 1 x [5, 5, 6, 8, 10] 3 x [2, 2, 3, 4, 7, 8]