Build (method = -2) #dp: 882 Step-3' Graph: 41 vertices and 223 arcs (0.00s) Step-4' Graph: 40 vertices and 221 arcs (0.00s) #V4/#V3 = 0.98 #A4/#A3 = 0.99 Ready! (0.00s) Optimize a model with 100 rows, 222 columns and 609 nonzeros Presolve removed 78 rows and 162 columns Presolve time: 0.00s Presolved: 22 rows, 60 columns, 135 nonzeros Variable types: 0 continuous, 60 integer (0 binary) Found heuristic solution: objective 3664.0000000 Optimize a model with 22 rows, 60 columns and 135 nonzeros Presolve removed 6 rows and 18 columns Presolved: 16 rows, 42 columns, 90 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.100e+01 Factor NZ : 1.360e+02 Factor Ops : 1.496e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.38194403e+03 1.04413597e+03 7.68e+02 2.22e-16 7.74e+01 0s 1 3.80487050e+03 2.87891894e+03 4.97e-14 4.44e-16 1.08e+01 0s 2 3.60536506e+03 3.47870321e+03 2.84e-14 2.22e-16 1.47e+00 0s 3 3.53695136e+03 3.52761680e+03 8.53e-14 2.22e-16 1.09e-01 0s 4 3.53200837e+03 3.53198585e+03 2.84e-14 4.44e-16 2.62e-04 0s 5 3.53200000e+03 3.53200000e+03 4.54e-15 3.01e-16 2.64e-10 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.53200000e+03 Root relaxation: objective 3.532000e+03, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3532.0000000 3532.00000 0.0% - 0s Explored 0 nodes (17 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.532000000000e+03, best bound 3.532000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 3532 Solution: 14 x [44] 48 x [35] 69 x [25] 95 x [20] 74 x [48] 100 x [45] 90 x [58] 55 x [46] 98 x [26] 63 x [15] 60 x [41] 74 x [55] 55 x [30] 80 x [5] 99 x [47] 20 x [39] 65 x [18] 81 x [6] 40 x [59] 1 x [21, 59] 13 x [21, 21, 59] 42 x [8] 92 x [3] 77 x [36] 81 x [56] 53 x [43] 65 x [16, 21] 70 x [7] 88 x [57] 88 x [31] 81 x [10] 96 x [12] 2 x [12, 17] 76 x [17, 19] 15 x [40] 23 x [33] 43 x [14, 33] 57 x [38] 51 x [32] 10 x [54] 90 x [24, 54] 88 x [28] 22 x [50] 66 x [60] 11 x [11, 60] 89 x [27] 51 x [23] 50 x [49] 55 x [51, 53] 30 x [22] 20 x [22, 53] 93 x [2] 97 x [52] 56 x [1] 61 x [29] 35 x [42] 15 x [9, 42] 82 x [37] 75 x [4, 34] 24 x [4, 13] 18 x [13, 13]