Build (method = -2) #dp: 574 Step-3' Graph: 42 vertices and 282 arcs (0.00s) Step-4' Graph: 26 vertices and 250 arcs (0.00s) #V4/#V3 = 0.62 #A4/#A3 = 0.89 Ready! (0.00s) Optimize a model with 66 rows, 251 columns and 705 nonzeros Presolve removed 24 rows and 38 columns Presolve time: 0.00s Presolved: 42 rows, 213 columns, 595 nonzeros Variable types: 0 continuous, 213 integer (26 binary) Found heuristic solution: objective 376.0000000 Found heuristic solution: objective 354.0000000 Found heuristic solution: objective 338.0000000 Optimize a model with 42 rows, 213 columns and 595 nonzeros Presolved: 42 rows, 213 columns, 595 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.390e+02 Factor NZ : 5.990e+02 Factor Ops : 1.073e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.32019265e+03 -1.69216517e+03 2.16e+03 1.64e-01 2.45e+01 0s 1 4.44590393e+02 -6.19950369e+02 1.40e+02 7.77e-16 3.33e+00 0s 2 3.20891046e+02 5.48190826e+01 1.57e+01 2.89e-15 6.51e-01 0s 3 2.77404610e+02 2.31105211e+02 8.06e-01 4.44e-16 1.05e-01 0s 4 2.67670093e+02 2.64270798e+02 2.06e-02 3.33e-16 7.67e-03 0s 5 2.67006614e+02 2.66990161e+02 1.67e-04 4.44e-16 3.71e-05 0s 6 2.67000000e+02 2.67000000e+02 2.32e-10 4.44e-16 5.74e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.67000000e+02 Root relaxation: objective 2.670000e+02, 114 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 267.0000000 267.00000 0.0% - 0s Explored 0 nodes (114 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.670000000000e+02, best bound 2.670000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 267 Solution: 8 x [3] 11 x [8] 17 x [6] 8 x [39] 1 x [36, 40] 2 x [9, 40] 10 x [34] 20 x [32] 21 x [31] 4 x [16, 19] 4 x [15, 19] 1 x [12, 19] 17 x [15, 17] 16 x [1] 15 x [13, 29] 20 x [38] 5 x [29, 33] 2 x [26, 33] 8 x [23, 33] 6 x [10, 28] 1 x [5, 25] 8 x [5, 21] 12 x [5, 11] 4 x [35, 37] 3 x [4, 30] 4 x [18, 28] 5 x [4, 24] 12 x [20, 22] 1 x [2, 22] 6 x [14, 18] 10 x [7, 14] 4 x [7, 11] 1 x [7, 11, 27]