Build (method = -2) #dp: 442 Step-3' Graph: 42 vertices and 116 arcs (0.00s) Step-4' Graph: 6 vertices and 44 arcs (0.00s) #V4/#V3 = 0.14 #A4/#A3 = 0.38 Ready! (0.00s) Optimize a model with 16 rows, 45 columns and 130 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 14 rows, 43 columns, 126 nonzeros Variable types: 0 continuous, 43 integer (0 binary) Found heuristic solution: objective 999.0000000 Found heuristic solution: objective 964.0000000 Optimize a model with 14 rows, 43 columns and 126 nonzeros Presolved: 14 rows, 43 columns, 126 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.500e+01 Factor NZ : 1.050e+02 Factor Ops : 1.015e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.76284063e+03 -4.36312733e+03 5.36e+02 1.11e-16 1.96e+02 0s 1 7.75633933e+02 -1.73719400e+03 3.34e+01 3.33e-16 3.18e+01 0s 2 3.82414372e+02 1.58705632e+01 4.01e-02 1.67e-15 3.85e+00 0s 3 2.58429539e+02 1.99895537e+02 1.71e-03 3.33e-16 6.10e-01 0s 4 2.50310471e+02 2.47200208e+02 1.40e-13 1.47e-16 3.24e-02 0s 5 2.50007759e+02 2.49977574e+02 5.90e-14 1.75e-16 3.14e-04 0s 6 2.50000000e+02 2.50000000e+02 6.68e-14 1.38e-16 3.19e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 36 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 250.0000000 250.00000 0.0% - 0s Explored 0 nodes (36 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.500000000000e+02, best bound 2.500000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 250 Solution: 8 x [3, 4, 6, 9] 24 x [1, 3, 6, 7] 4 x [3, 4, 6, 10] 40 x [2, 4, 6, 9] 123 x [1, 6, 7, 9] 43 x [5, 7, 8, 9] 6 x [5, 7, 7, 9] 1 x [4, 5, 6, 7] 1 x [5, 6, 7, 7]