Build (method = -2) #dp: 156 Step-3' Graph: 16 vertices and 71 arcs (0.00s) Step-4' Graph: 15 vertices and 69 arcs (0.00s) #V4/#V3 = 0.94 #A4/#A3 = 0.97 Ready! (0.00s) Optimize a model with 35 rows, 70 columns and 188 nonzeros Presolve removed 18 rows and 24 columns Presolve time: 0.00s Presolved: 17 rows, 46 columns, 122 nonzeros Variable types: 0 continuous, 46 integer (5 binary) Found heuristic solution: objective 185.0000000 Found heuristic solution: objective 130.0000000 Optimize a model with 17 rows, 46 columns and 122 nonzeros Presolved: 17 rows, 46 columns, 122 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.000e+01 Factor NZ : 1.530e+02 Factor Ops : 1.785e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.68504585e+02 -3.62241725e+02 6.87e+02 2.57e-01 2.86e+01 0s 1 2.27339664e+02 -7.36237534e+01 1.17e+02 2.78e-16 5.42e+00 0s 2 1.52882033e+02 8.84783022e+01 1.64e+00 2.22e-16 6.78e-01 0s 3 1.34679622e+02 1.20962678e+02 1.32e-01 1.39e-16 1.42e-01 0s 4 1.30160756e+02 1.29403209e+02 2.43e-03 1.11e-16 7.82e-03 0s Barrier performed 4 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 1.300000000000e+02, best bound 1.300000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 130 Solution: 2 x [12] 17 x [16] 16 x [15] 13 x [13] 1 x [5, 19] 5 x [3] 11 x [5, 18] 4 x [2] 17 x [6, 7] 1 x [11, 20] 3 x [8, 10] 8 x [10, 14] 14 x [1, 4] 2 x [4, 8] 3 x [9] 1 x [8, 9] 12 x [9, 17]