Build (method = -2) #dp: 1529 Step-3' Graph: 274 vertices and 815 arcs (0.01s) Step-4' Graph: 95 vertices and 457 arcs (0.01s) #V4/#V3 = 0.35 #A4/#A3 = 0.56 Ready! (0.01s) Optimize a model with 155 rows, 458 columns and 1188 nonzeros Presolve removed 43 rows and 59 columns Presolve time: 0.00s Presolved: 112 rows, 399 columns, 1036 nonzeros Variable types: 0 continuous, 399 integer (17 binary) Found heuristic solution: objective 2549.0000000 Found heuristic solution: objective 2480.0000000 Optimize a model with 112 rows, 399 columns and 1036 nonzeros Presolved: 112 rows, 399 columns, 1036 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.000e+02 Factor NZ : 2.273e+03 Factor Ops : 5.137e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.01143092e+04 -4.30134437e+04 1.09e+05 9.11e-02 5.21e+02 0s 1 6.55475521e+03 -1.68800619e+04 1.62e+04 7.77e-16 8.74e+01 0s 2 3.07561099e+03 -3.30362544e+03 1.82e+03 1.44e-15 1.30e+01 0s 3 2.54482881e+03 -1.62515819e+02 2.67e+02 2.66e-15 3.84e+00 0s 4 2.33260727e+03 9.89427090e+02 7.84e+01 1.67e-15 1.74e+00 0s 5 2.25187723e+03 1.95776439e+03 1.78e+01 5.55e-16 3.71e-01 0s 6 2.23184274e+03 2.21548291e+03 2.60e+00 7.39e-16 2.11e-02 0s 7 2.22946829e+03 2.22709636e+03 4.39e-01 5.58e-16 3.07e-03 0s 8 2.22900269e+03 2.22899784e+03 1.46e-03 6.82e-16 6.48e-06 0s 9 2.22900000e+03 2.22900000e+03 1.60e-09 5.05e-16 6.85e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.22900000e+03 Root relaxation: objective 2.229000e+03, 242 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2229.0000000 2229.00000 0.0% - 0s Explored 0 nodes (242 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.229000000000e+03, best bound 2.229000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.04 seconds Objective: 2229 Solution: 11 x [24] 73 x [28] 30 x [4] 93 x [33] 36 x [1] 87 x [5] 59 x [51] 85 x [16] 17 x [18] 21 x [41] 98 x [36] 68 x [47] 68 x [56] 24 x [37] 93 x [46] 32 x [22] 75 x [13] 88 x [30] 20 x [39] 100 x [32] 51 x [38] 62 x [49] 58 x [40] 9 x [40, 50] 5 x [11, 40] 89 x [43] 11 x [20] 4 x [20, 48] 14 x [20, 58] 44 x [6] 18 x [12] 13 x [3, 12] 18 x [8] 59 x [8, 26] 19 x [23] 51 x [15, 23] 3 x [11, 23] 5 x [7, 14] 9 x [35] 12 x [9, 35] 1 x [35, 44] 6 x [54] 24 x [17, 54] 6 x [25] 41 x [21, 25] 34 x [14, 25] 6 x [45] 29 x [17, 45] 2 x [9, 29] 16 x [9, 26, 29] 5 x [19, 34] 14 x [19] 36 x [19, 27] 14 x [19, 21] 14 x [14, 17, 19] 12 x [53] 6 x [53, 55] 20 x [53, 59] 45 x [14, 53] 7 x [2, 53] 18 x [10] 29 x [10, 21] 6 x [31] 35 x [31, 59] 36 x [42] 9 x [42, 52] 14 x [42, 52, 57] 12 x [42, 60]