Build (method = -2) #dp: 4488 Step-3' Graph: 135 vertices and 398 arcs (0.03s) Step-4' Graph: 10 vertices and 148 arcs (0.03s) #V4/#V3 = 0.07 #A4/#A3 = 0.37 Ready! (0.03s) Optimize a model with 54 rows, 149 columns and 431 nonzeros Presolve removed 4 rows and 4 columns Presolve time: 0.00s Presolved: 50 rows, 145 columns, 421 nonzeros Variable types: 0 continuous, 145 integer (109 binary) Found heuristic solution: objective 47.0000000 Optimize a model with 50 rows, 145 columns and 421 nonzeros Presolved: 50 rows, 145 columns, 421 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.490e+02 Factor NZ : 6.050e+02 Factor Ops : 1.177e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.64763792e+02 -1.97555883e+02 1.07e+01 9.62e-03 1.82e+00 0s 1 4.13532764e+01 -2.39979805e+01 1.05e-12 1.67e-15 2.34e-01 0s 2 1.87521137e+01 1.14577846e+01 3.11e-14 5.55e-16 2.58e-02 0s 3 1.66757403e+01 1.66253009e+01 3.95e-14 4.09e-16 1.70e-04 0s 4 1.66666757e+01 1.66666253e+01 1.35e-14 7.77e-16 1.70e-07 0s 5 1.66666667e+01 1.66666667e+01 2.05e-14 3.33e-16 1.70e-13 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 94 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.66667 0 5 47.00000 16.66667 64.5% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (125 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.01 seconds Total run time: 0.04 seconds Objective: 17 Solution: 1 x [12, 18, 18] 1 x [7, 13, 17] 1 x [16, 40, 40] 1 x [1, 1, 15] 1 x [5, 10, 14] 1 x [4, 10, 11] 1 x [8, 9, 42] 1 x [2, 6, 41] 1 x [3, 41, 43] 1 x [38, 44] 1 x [35, 37, 39] 1 x [32, 34, 36] 1 x [30, 31, 33] 1 x [19, 23, 32] 1 x [26, 27, 29] 1 x [21, 25, 28] 1 x [20, 22, 24]