Build (method = -2) #dp: 1017 Step-3' Graph: 48 vertices and 314 arcs (0.00s) Step-4' Graph: 35 vertices and 288 arcs (0.00s) #V4/#V3 = 0.73 #A4/#A3 = 0.92 Ready! (0.00s) Optimize a model with 89 rows, 289 columns and 803 nonzeros Presolve removed 35 rows and 40 columns Presolve time: 0.00s Presolved: 54 rows, 249 columns, 673 nonzeros Variable types: 0 continuous, 249 integer (113 binary) Found heuristic solution: objective 88.0000000 Found heuristic solution: objective 73.0000000 Optimize a model with 54 rows, 249 columns and 673 nonzeros Presolved: 54 rows, 249 columns, 673 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.160e+02 Factor NZ : 8.700e+02 Factor Ops : 1.625e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.92955386e+02 -7.60255462e+02 1.49e+03 2.26e-01 1.22e+01 0s 1 1.76700265e+02 -2.35397669e+02 2.52e+02 4.44e-16 2.20e+00 0s 2 8.80977556e+01 -1.95609425e+01 1.32e+01 3.33e-16 2.64e-01 0s 3 7.35064716e+01 3.44721846e+01 6.41e-01 2.78e-16 7.84e-02 0s 4 6.81815475e+01 6.11780631e+01 2.07e-02 2.22e-16 1.38e-02 0s 5 6.56879872e+01 6.40678510e+01 5.22e-03 2.22e-16 3.20e-03 0s 6 6.50090600e+01 6.49898491e+01 5.60e-05 2.22e-16 3.79e-05 0s 7 6.50000000e+01 6.50000000e+01 1.31e-10 2.22e-16 9.67e-11 0s 8 6.50000000e+01 6.50000000e+01 9.79e-14 3.33e-16 9.67e-14 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 6.50000000e+01 Root relaxation: objective 6.500000e+01, 43 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 65.0000000 65.00000 0.0% - 0s Explored 0 nodes (43 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.500000000000e+01, best bound 6.500000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 65 Solution: 4 x [54] 1 x [53] 1 x [52] 1 x [51] 1 x [50] 3 x [49] 1 x [48] 2 x [1, 47] 4 x [46] 2 x [3, 45] 3 x [44] 1 x [5, 43] 1 x [6, 42] 3 x [41] 3 x [40] 1 x [8, 39] 2 x [2, 38] 1 x [9, 37] 1 x [36] 1 x [7, 36] 1 x [4, 35] 1 x [10, 34] 1 x [3, 34] 1 x [11, 33] 2 x [12, 32] 4 x [31] 3 x [14, 30] 1 x [13, 30] 1 x [11, 29] 1 x [17, 28] 2 x [15, 27] 1 x [18, 26] 2 x [16, 26] 2 x [19, 25] 2 x [20, 24] 1 x [21, 23] 1 x [1, 23] 1 x [22, 22]