Build (method = -2) #dp: 182 Step-3' Graph: 37 vertices and 104 arcs (0.00s) Step-4' Graph: 17 vertices and 64 arcs (0.00s) #V4/#V3 = 0.46 #A4/#A3 = 0.62 Ready! (0.00s) Optimize a model with 37 rows, 65 columns and 165 nonzeros Presolve removed 16 rows and 16 columns Presolve time: 0.00s Presolved: 21 rows, 49 columns, 119 nonzeros Variable types: 0 continuous, 49 integer (5 binary) Found heuristic solution: objective 163.0000000 Found heuristic solution: objective 149.0000000 Found heuristic solution: objective 144.0000000 Optimize a model with 21 rows, 49 columns and 119 nonzeros Presolved: 21 rows, 49 columns, 119 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.900e+01 Factor NZ : 1.710e+02 Factor Ops : 1.751e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.78953870e+02 -8.09619965e+02 4.00e+02 2.22e-16 3.24e+01 0s 1 2.01838033e+02 -1.81401741e+02 2.53e+01 4.44e-16 4.54e+00 0s 2 1.45196664e+02 2.72339559e+01 1.04e+00 1.11e-15 1.15e+00 0s 3 1.18150377e+02 9.37383554e+01 1.01e-01 3.33e-16 2.36e-01 0s 4 1.12355753e+02 1.10641446e+02 4.11e-03 3.33e-16 1.65e-02 0s 5 1.12009751e+02 1.11982826e+02 6.11e-05 2.22e-16 2.59e-04 0s 6 1.12000000e+02 1.12000000e+02 1.81e-10 2.77e-16 6.85e-10 0s 7 1.12000000e+02 1.12000000e+02 9.55e-15 2.22e-16 9.83e-16 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.12000000e+02 Root relaxation: objective 1.120000e+02, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 112.0000000 112.00000 0.0% - 0s Explored 0 nodes (17 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.120000000000e+02, best bound 1.120000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 112 Solution: 4 x [1] 11 x [2, 20] 6 x [3, 19] 1 x [3, 20] 5 x [4, 18] 7 x [5, 18] 2 x [6, 17] 15 x [7, 17] 5 x [8] 1 x [8, 16] 3 x [8, 18] 2 x [8, 20] 15 x [9] 3 x [10, 15] 1 x [11, 13] 13 x [11, 14] 8 x [12, 13] 7 x [12, 15] 3 x [13, 15]