Build (method = -2) #dp: 1812 Step-3' Graph: 34 vertices and 302 arcs (0.01s) Step-4' Graph: 6 vertices and 246 arcs (0.01s) #V4/#V3 = 0.18 #A4/#A3 = 0.81 Ready! (0.01s) Optimize a model with 86 rows, 247 columns and 735 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 84 rows, 245 columns, 731 nonzeros Variable types: 0 continuous, 245 integer (21 binary) Found heuristic solution: objective 452.0000000 Found heuristic solution: objective 444.0000000 Optimize a model with 84 rows, 245 columns and 731 nonzeros Presolved: 84 rows, 245 columns, 731 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.470e+02 Factor NZ : 7.370e+02 Factor Ops : 1.228e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.45610685e+03 -1.30029198e+03 3.92e+01 6.51e-03 1.28e+01 0s 1 3.20198887e+02 -5.77766652e+02 2.89e-01 3.33e-16 1.70e+00 0s 2 2.24262086e+02 -1.32110035e+02 2.75e-02 2.22e-16 6.47e-01 0s 3 1.61297975e+02 1.31176528e+02 2.25e-13 1.67e-16 5.35e-02 0s 4 1.53606972e+02 1.52652449e+02 1.13e-13 1.11e-16 1.70e-03 0s 5 1.53333381e+02 1.53333270e+02 1.23e-13 2.22e-16 1.96e-07 0s 6 1.53333333e+02 1.53333333e+02 6.65e-14 3.33e-16 1.96e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.53333333e+02 Root relaxation: objective 1.533333e+02, 211 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 153.33333 0 4 444.00000 153.33333 65.5% - 0s H 0 0 154.0000000 153.33333 0.43% - 0s Explored 0 nodes (272 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.540000000000e+02, best bound 1.540000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 154 Solution: 9 x [9, 56, 79] 4 x [72, 74, 75] 2 x [4, 6, 58] 1 x [17, 50, 70] 1 x [10, 45, 70] 2 x [11, 45, 80] 5 x [18, 25, 43] 9 x [20, 42, 69] 5 x [26, 40, 66] 3 x [38, 48, 66] 10 x [24, 37, 39] 7 x [36, 51, 62] 8 x [22, 33, 60] 4 x [8, 17, 21] 6 x [57, 63, 64] 1 x [15, 62, 74] 6 x [2, 14, 59] 7 x [41, 53, 61] 3 x [32, 49, 55] 4 x [1, 10, 35] 1 x [16, 52, 55] 10 x [54, 71, 78] 9 x [23, 34, 73] 1 x [8, 27, 60] 1 x [5] 1 x [5, 33, 34] 2 x [12, 46, 67] 6 x [7, 30, 44] 1 x [28, 35, 51] 6 x [29, 31, 77] 7 x [19, 28, 65] 10 x [3, 13, 68] 1 x [30, 66, 76] 1 x [4, 47, 66]