Build (method = -2) #dp: 89 Step-3' Graph: 18 vertices and 47 arcs (0.00s) Step-4' Graph: 17 vertices and 45 arcs (0.00s) #V4/#V3 = 0.94 #A4/#A3 = 0.96 Ready! (0.00s) Optimize a model with 26 rows, 46 columns and 108 nonzeros Presolve removed 19 rows and 34 columns Presolve time: 0.00s Presolved: 7 rows, 12 columns, 32 nonzeros Variable types: 0 continuous, 12 integer (0 binary) Found heuristic solution: objective 249.0000000 Optimize a model with 7 rows, 12 columns and 32 nonzeros Presolved: 7 rows, 12 columns, 32 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.700e+01 Factor NZ : 2.800e+01 Factor Ops : 1.400e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.48043487e+02 -1.49224860e+02 1.91e+02 1.11e-16 3.92e+01 0s 1 2.66800971e+02 1.46622618e+02 3.28e+00 4.44e-16 4.65e+00 0s 2 2.50368337e+02 2.42572430e+02 7.11e-14 5.55e-17 2.89e-01 0s 3 2.49001478e+02 2.48993501e+02 1.42e-14 3.33e-16 2.95e-04 0s Barrier performed 3 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.490000000000e+02, best bound 2.490000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 249 Solution: 12 x [1, 3, 4, 5, 6, 7] 5 x [1, 3, 4, 6, 7] 19 x [1, 3, 4, 7] 21 x [2, 3, 4] 78 x [2, 3, 4, 5, 7, 8] 34 x [2, 3, 4, 7, 8, 9] 69 x [3] 1 x [3, 4, 7] 10 x [3, 7]