Build (method = -2) #dp: 3543 Step-3' Graph: 114 vertices and 359 arcs (0.01s) Step-4' Graph: 29 vertices and 189 arcs (0.01s) #V4/#V3 = 0.25 #A4/#A3 = 0.53 Ready! (0.01s) Optimize a model with 110 rows, 190 columns and 517 nonzeros Presolve removed 29 rows and 30 columns Presolve time: 0.00s Presolved: 81 rows, 160 columns, 428 nonzeros Variable types: 0 continuous, 160 integer (1 binary) Found heuristic solution: objective 497.0000000 Found heuristic solution: objective 278.0000000 Optimize a model with 81 rows, 160 columns and 428 nonzeros Presolve removed 1 rows and 1 columns Presolved: 80 rows, 159 columns, 426 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.570e+02 Factor NZ : 1.049e+03 Factor Ops : 2.101e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.03957800e+03 -8.02555601e+03 1.25e+03 2.22e-16 1.44e+02 0s 1 1.62602458e+03 -2.65124133e+03 1.59e+02 8.88e-16 2.18e+01 0s 2 4.03417160e+02 -3.23902761e+02 1.42e+00 1.84e-14 2.01e+00 0s 3 2.86036268e+02 8.12229167e+01 1.41e-02 5.55e-15 5.51e-01 0s 4 2.52336724e+02 2.29984206e+02 2.50e-04 4.44e-16 6.01e-02 0s 5 2.50007250e+02 2.49944901e+02 8.19e-07 2.22e-16 1.68e-04 0s 6 2.50000000e+02 2.50000000e+02 1.31e-12 2.22e-16 1.74e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 250.0000000 250.00000 0.0% - 0s Explored 0 nodes (79 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.500000000000e+02, best bound 2.500000000000e+02, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.01 seconds Total run time: 0.04 seconds Objective: 250 Solution: 5 x [18, 81] 7 x [6, 80] 6 x [28, 79] 1 x [23, 78] 3 x [13, 78] 3 x [5, 77] 7 x [36, 76] 6 x [25, 75] 13 x [19, 74] 9 x [23, 73] 6 x [22, 72] 5 x [11, 71] 7 x [42, 70] 7 x [3, 69] 11 x [17, 68] 6 x [16, 67] 4 x [35, 66] 1 x [12, 66] 6 x [33, 65] 1 x [6, 65] 4 x [34, 64] 1 x [3, 64] 6 x [9, 63] 5 x [50, 62] 2 x [51, 61] 1 x [50, 61] 9 x [45, 60] 6 x [52, 59] 2 x [19, 58] 5 x [51, 57] 3 x [37, 56] 1 x [2, 56] 2 x [46, 55] 1 x [2, 55] 1 x [52, 54] 3 x [42, 54] 10 x [47, 53] 6 x [8, 49] 4 x [31, 48] 1 x [3, 48] 1 x [45, 45] 7 x [2, 44] 2 x [30, 43] 1 x [20, 43] 5 x [4, 41] 9 x [21, 40] 5 x [32, 39] 6 x [24, 38] 4 x [1, 29] 8 x [13, 27] 5 x [15, 26] 3 x [10, 14] 7 x [7, 12]