Build (method = -2) #dp: 447 Step-3' Graph: 85 vertices and 248 arcs (0.00s) Step-4' Graph: 20 vertices and 118 arcs (0.00s) #V4/#V3 = 0.24 #A4/#A3 = 0.48 Ready! (0.00s) Optimize a model with 80 rows, 119 columns and 321 nonzeros Presolve removed 55 rows and 59 columns Presolve time: 0.00s Presolved: 25 rows, 60 columns, 152 nonzeros Variable types: 0 continuous, 60 integer (0 binary) Found heuristic solution: objective 4101.0000000 Found heuristic solution: objective 3962.0000000 Found heuristic solution: objective 3956.0000000 Optimize a model with 25 rows, 60 columns and 152 nonzeros Presolved: 25 rows, 60 columns, 152 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.100e+01 Factor NZ : 2.410e+02 Factor Ops : 2.921e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.60600483e+03 -6.59343787e+03 1.03e+04 2.22e-16 3.31e+02 0s 1 4.46611346e+03 1.73778441e+02 5.84e+02 3.33e-16 4.22e+01 0s 2 4.01420136e+03 1.82454090e+03 7.71e+01 5.55e-16 1.77e+01 0s 3 3.76417466e+03 3.29370148e+03 1.06e-01 3.61e-16 3.65e+00 0s 4 3.63138232e+03 3.59550075e+03 6.63e-03 2.57e-16 2.78e-01 0s 5 3.62213825e+03 3.62184015e+03 1.24e-04 2.33e-16 2.31e-03 0s 6 3.62200000e+03 3.62200000e+03 7.75e-10 2.73e-16 9.93e-09 0s 7 3.62200000e+03 3.62200000e+03 4.09e-12 3.33e-16 1.93e-14 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 3.62200000e+03 Root relaxation: objective 3.622000e+03, 32 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3622.0000000 3622.00000 0.0% - 0s Explored 0 nodes (32 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.622000000000e+03, best bound 3.622000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 3622 Solution: 57 x [12] 68 x [21] 93 x [53] 89 x [22] 92 x [7] 66 x [26] 96 x [4] 81 x [59] 50 x [9] 71 x [8] 69 x [51] 19 x [14, 48] 73 x [44] 77 x [50] 93 x [40] 17 x [45, 48] 69 x [55] 96 x [31] 56 x [34] 54 x [43] 86 x [5] 82 x [1] 68 x [52] 29 x [13] 56 x [16] 87 x [35] 90 x [39] 87 x [54] 75 x [10] 80 x [46] 5 x [47] 1 x [29, 47, 48] 26 x [2, 47] 67 x [29, 32] 95 x [6] 63 x [11] 69 x [38] 83 x [56] 60 x [60] 15 x [58] 42 x [19, 58] 90 x [33] 96 x [41] 6 x [42] 88 x [3, 42] 71 x [18] 1 x [18, 48] 80 x [25] 48 x [23, 30] 7 x [30, 48] 99 x [49] 65 x [24, 27] 5 x [37] 82 x [36, 37] 67 x [15, 17] 35 x [20] 4 x [15, 20, 48] 27 x [20, 24] 72 x [28, 57] 27 x [15, 48, 57]