Build (method = -2) #dp: 2022 Step-3' Graph: 63 vertices and 776 arcs (0.01s) Step-4' Graph: 57 vertices and 764 arcs (0.01s) #V4/#V3 = 0.90 #A4/#A3 = 0.98 Ready! (0.01s) Optimize a model with 135 rows, 765 columns and 2186 nonzeros Presolve removed 56 rows and 64 columns Presolve time: 0.02s Presolved: 79 rows, 701 columns, 1976 nonzeros Variable types: 0 continuous, 701 integer (317 binary) Found heuristic solution: objective 168.0000000 Found heuristic solution: objective 166.0000000 Optimize a model with 79 rows, 701 columns and 1976 nonzeros Presolved: 79 rows, 701 columns, 1976 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.009e+03 Factor NZ : 1.997e+03 Factor Ops : 6.553e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.35124914e+03 -3.84623305e+03 5.59e+03 1.77e-01 2.58e+01 0s 1 6.87683106e+02 -1.31286043e+03 9.06e+02 6.66e-16 4.64e+00 0s 2 2.33755823e+02 -3.18559727e+02 7.36e+01 6.66e-16 6.00e-01 0s 3 1.67635427e+02 5.06280109e+01 8.34e+00 4.16e-16 9.66e-02 0s 4 1.48385233e+02 1.00309673e+02 1.91e+00 5.20e-16 3.62e-02 0s 5 1.39497920e+02 1.15267309e+02 3.09e-01 4.44e-16 1.74e-02 0s 6 1.36346414e+02 1.28295374e+02 9.45e-02 2.69e-16 5.78e-03 0s 7 1.35665846e+02 1.35190794e+02 1.31e-02 5.08e-16 3.50e-04 0s 8 1.35500208e+02 1.35499454e+02 3.95e-08 3.39e-16 5.31e-07 0s 9 1.35500000e+02 1.35500000e+02 3.93e-13 4.44e-16 5.36e-13 0s Barrier solved model in 9 iterations and 0.01 seconds Optimal objective 1.35500000e+02 Root relaxation: objective 1.355000e+02, 280 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 135.50000 0 2 166.00000 135.50000 18.4% - 0s H 0 0 136.0000000 135.50000 0.37% - 0s Explored 0 nodes (380 simplex iterations) in 0.04 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.360000000000e+02, best bound 1.360000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.04 seconds Total run time: 0.07 seconds Objective: 136 Solution: 1 x [78] 3 x [77] 5 x [76] 1 x [75] 3 x [74] 3 x [73] 1 x [72] 2 x [71] 2 x [70] 2 x [69] 3 x [68] 1 x [67] 2 x [66] 4 x [65] 2 x [64] 4 x [63] 5 x [62] 4 x [61] 1 x [60] 1 x [59] 3 x [58] 1 x [1, 57] 4 x [56] 1 x [4, 55] 2 x [2, 54] 1 x [5, 53] 3 x [4, 52] 1 x [8, 51] 1 x [9, 50] 2 x [6, 50] 5 x [49] 2 x [13, 48] 4 x [14, 47] 1 x [14, 46] 1 x [10, 46] 2 x [16, 45] 1 x [12, 45] 1 x [7, 45] 8 x [44] 3 x [17, 43] 2 x [18, 42] 1 x [1, 42] 1 x [20, 41] 1 x [15, 41] 2 x [9, 41] 1 x [22, 40] 1 x [21, 40] 1 x [19, 40] 1 x [11, 40] 3 x [23, 39] 2 x [23, 38] 2 x [37] 2 x [23, 37] 1 x [26, 36] 1 x [24, 36] 3 x [27, 35] 1 x [27, 34] 2 x [25, 34] 4 x [29, 33] 2 x [30, 32] 2 x [28, 32] 1 x [3, 8, 32] 1 x [31] 1 x [31, 31]