Build (method = -2) #dp: 3547 Step-3' Graph: 114 vertices and 359 arcs (0.02s) Step-4' Graph: 29 vertices and 189 arcs (0.02s) #V4/#V3 = 0.25 #A4/#A3 = 0.53 Ready! (0.02s) Optimize a model with 110 rows, 190 columns and 517 nonzeros Presolve removed 28 rows and 29 columns Presolve time: 0.00s Presolved: 82 rows, 161 columns, 432 nonzeros Variable types: 0 continuous, 161 integer (0 binary) Found heuristic solution: objective 497.0000000 Found heuristic solution: objective 315.0000000 Optimize a model with 82 rows, 161 columns and 432 nonzeros Presolve removed 1 rows and 1 columns Presolved: 81 rows, 160 columns, 430 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.590e+02 Factor NZ : 1.052e+03 Factor Ops : 2.102e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.54885371e+03 -3.70935454e+03 2.41e+03 2.22e-16 7.16e+01 0s 1 1.30591923e+03 -1.34915326e+03 2.58e+02 4.44e-16 1.07e+01 0s 2 3.39054585e+02 1.74889820e+01 3.09e-13 1.33e-14 8.58e-01 0s 3 2.58246436e+02 2.06228648e+02 6.18e-13 1.33e-15 1.39e-01 0s 4 2.50096271e+02 2.49533094e+02 1.48e-13 2.22e-16 1.50e-03 0s 5 2.50000001e+02 2.49999998e+02 3.13e-13 3.33e-16 5.84e-09 0s 6 2.50000000e+02 2.50000000e+02 5.42e-14 1.25e-16 5.93e-15 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 81 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 (81 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: 6 x [23, 81] 8 x [22, 80] 4 x [6, 79] 9 x [34, 78] 6 x [15, 77] 6 x [36, 76] 8 x [33, 75] 7 x [32, 74] 5 x [10, 73] 3 x [28, 72] 1 x [5, 72] 3 x [25, 71] 9 x [4, 70] 5 x [1, 69] 7 x [24, 68] 7 x [18, 67] 7 x [8, 66] 1 x [4, 65] 6 x [48, 64] 5 x [49, 63] 8 x [44, 62] 11 x [17, 61] 3 x [51, 60] 4 x [50, 60] 5 x [53, 59] 3 x [1, 59] 2 x [54, 58] 4 x [54, 57] 2 x [56, 56] 3 x [52, 55] 1 x [48, 55] 2 x [44, 47] 4 x [47, 47] 7 x [3, 46] 7 x [16, 45] 6 x [2, 43] 3 x [14, 42] 7 x [29, 41] 6 x [9, 40] 3 x [27, 39] 6 x [13, 38] 3 x [35, 37] 1 x [16, 37] 8 x [19, 31] 7 x [7, 30] 6 x [20, 26] 5 x [11, 21] 10 x [5, 12]