Build (method = -2) #dp: 307 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 804.0000000 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 2.51534063e+03 -4.36022348e+03 4.62e+02 1.11e-16 1.78e+02 0s 1 6.43596641e+02 -1.62691998e+03 9.66e-13 3.33e-16 2.45e+01 0s 2 3.95936514e+02 2.17026751e+01 1.42e-13 2.78e-16 3.94e+00 0s 3 2.51753631e+02 2.22363530e+02 6.26e-14 5.55e-16 3.06e-01 0s 4 2.50003963e+02 2.49972384e+02 2.57e-13 1.41e-16 3.29e-04 0s 5 2.50000000e+02 2.50000000e+02 8.01e-14 2.22e-16 3.32e-10 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 35 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 (35 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: 1 x [4, 5, 7, 8] 14 x [1, 4, 5, 7] 91 x [4, 5, 6, 10] 62 x [1, 5, 7, 8] 5 x [2, 3, 5, 7] 1 x [3, 5, 7, 7] 22 x [2, 3, 5, 6] 9 x [1, 3, 7, 8] 45 x [1, 2, 7, 9]