Build (method = -2) #dp: 1168 Step-3' Graph: 55 vertices and 467 arcs (0.00s) Step-4' Graph: 46 vertices and 449 arcs (0.00s) #V4/#V3 = 0.84 #A4/#A3 = 0.96 Ready! (0.00s) Optimize a model with 106 rows, 450 columns and 1262 nonzeros Presolve removed 46 rows and 53 columns Presolve time: 0.01s Presolved: 60 rows, 397 columns, 1102 nonzeros Variable types: 0 continuous, 397 integer (194 binary) Found heuristic solution: objective 89.0000000 Found heuristic solution: objective 78.0000000 Optimize a model with 60 rows, 397 columns and 1102 nonzeros Presolved: 60 rows, 397 columns, 1102 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.610e+02 Factor NZ : 1.331e+03 Factor Ops : 3.630e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.69500695e+02 -1.37176119e+03 1.38e+03 2.05e-01 1.21e+01 0s 1 2.41684268e+02 -4.87474346e+02 2.03e+02 1.22e-15 2.12e+00 0s 2 1.02131430e+02 -9.30019424e+01 1.75e+01 1.94e-15 3.19e-01 0s 3 7.65148209e+01 2.80155484e+01 1.11e+00 2.22e-15 6.30e-02 0s 4 7.00888835e+01 4.83676145e+01 3.47e-01 1.76e-15 2.75e-02 0s 5 6.61664011e+01 5.84345557e+01 1.45e-01 1.76e-15 9.78e-03 0s 6 6.39407291e+01 6.21499648e+01 3.52e-02 1.77e-15 2.26e-03 0s 7 6.36718325e+01 6.26411396e+01 1.65e-02 3.01e-15 1.29e-03 0s 8 6.33537245e+01 6.28803756e+01 3.28e-03 2.31e-15 5.92e-04 0s 9 6.32724122e+01 6.32077168e+01 2.68e-04 2.67e-15 8.07e-05 0s 10 6.32505457e+01 6.32494179e+01 3.64e-07 2.69e-15 1.40e-06 0s 11 6.32500005e+01 6.32499994e+01 3.09e-14 2.11e-15 1.40e-09 0s 12 6.32500000e+01 6.32500000e+01 1.93e-14 1.89e-15 1.40e-12 0s Barrier solved model in 12 iterations and 0.00 seconds Optimal objective 6.32500000e+01 Root relaxation: objective 6.325000e+01, 118 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63.25000 0 7 78.00000 63.25000 18.9% - 0s H 0 0 64.0000000 63.25000 1.17% - 0s Explored 0 nodes (152 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.400000000000e+01, best bound 6.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 64 Solution: 3 x [60] 2 x [59] 1 x [58] 1 x [57] 2 x [56] 1 x [55] 2 x [54] 1 x [53] 2 x [52] 1 x [51] 2 x [50] 2 x [49] 1 x [48] 1 x [47] 3 x [46] 1 x [45] 1 x [1, 44] 1 x [2, 43] 3 x [42] 1 x [4, 41] 1 x [6, 40] 2 x [5, 40] 1 x [7, 39] 1 x [3, 38] 1 x [9, 37] 1 x [8, 37] 1 x [10, 36] 1 x [12, 35] 2 x [13, 34] 1 x [12, 34] 1 x [14, 33] 2 x [15, 32] 1 x [16, 31] 1 x [19, 30] 2 x [21, 29] 2 x [22, 28] 1 x [23, 27] 2 x [18, 27] 1 x [26] 1 x [23, 26] 2 x [21, 25] 1 x [22, 24] 1 x [11, 20] 2 x [3, 17, 17]