Build (method = -2) #dp: 411 Step-3' Graph: 37 vertices and 180 arcs (0.00s) Step-4' Graph: 23 vertices and 152 arcs (0.00s) #V4/#V3 = 0.62 #A4/#A3 = 0.84 Ready! (0.00s) Optimize a model with 62 rows, 153 columns and 420 nonzeros Presolve removed 32 rows and 34 columns Presolve time: 0.00s Presolved: 30 rows, 119 columns, 318 nonzeros Variable types: 0 continuous, 119 integer (0 binary) Found heuristic solution: objective 398.0000000 Found heuristic solution: objective 346.0000000 Found heuristic solution: objective 288.0000000 Optimize a model with 30 rows, 119 columns and 318 nonzeros Presolved: 30 rows, 119 columns, 318 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.470e+02 Factor NZ : 3.660e+02 Factor Ops : 5.396e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.32602385e+03 -1.84840062e+03 3.60e+03 2.22e-16 5.20e+01 0s 1 4.96075323e+02 -5.44609457e+02 3.26e+02 3.33e-16 7.12e+00 0s 2 3.45310713e+02 8.43103829e+01 2.19e+00 5.55e-16 1.06e+00 0s 3 3.07414826e+02 2.09984645e+02 1.51e-01 2.22e-16 3.93e-01 0s 4 2.82345958e+02 2.61327690e+02 1.59e-02 1.60e-16 8.48e-02 0s 5 2.78182221e+02 2.73901944e+02 4.67e-03 2.22e-16 1.73e-02 0s 6 2.77015488e+02 2.76970148e+02 3.39e-05 3.33e-16 1.83e-04 0s 7 2.77000000e+02 2.77000000e+02 8.26e-11 2.32e-16 5.82e-10 0s 8 2.77000000e+02 2.77000000e+02 1.85e-13 2.22e-16 5.82e-13 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 2.77000000e+02 Root relaxation: objective 2.770000e+02, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 277.0000000 277.00000 0.0% - 0s Explored 0 nodes (55 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.770000000000e+02, best bound 2.770000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 277 Solution: 1 x [32, 38] 16 x [36] 8 x [34] 2 x [32, 34] 13 x [33] 19 x [17] 18 x [24] 14 x [23] 2 x [3, 22] 9 x [8] 3 x [20] 8 x [2, 30] 9 x [6, 13] 21 x [16] 6 x [13, 37] 2 x [2, 37] 9 x [2, 35] 21 x [7] 6 x [5, 29] 4 x [1, 28] 1 x [1, 26] 2 x [1, 25] 1 x [21] 2 x [18, 21] 6 x [1, 19] 16 x [15, 18] 1 x [14, 32] 15 x [12, 39] 7 x [9] 13 x [9, 11] 11 x [4, 27] 4 x [10] 1 x [10, 27] 6 x [31, 31]