Build (method = -2) #dp: 972 Step-3' Graph: 138 vertices and 407 arcs (0.01s) Step-4' Graph: 67 vertices and 265 arcs (0.01s) #V4/#V3 = 0.49 #A4/#A3 = 0.65 Ready! (0.01s) Optimize a model with 127 rows, 266 columns and 668 nonzeros Presolve removed 40 rows and 41 columns Presolve time: 0.00s Presolved: 87 rows, 225 columns, 549 nonzeros Variable types: 0 continuous, 225 integer (16 binary) Found heuristic solution: objective 265.0000000 Found heuristic solution: objective 257.0000000 Optimize a model with 87 rows, 225 columns and 549 nonzeros Presolved: 87 rows, 225 columns, 549 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.510e+02 Factor NZ : 1.232e+03 Factor Ops : 2.048e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.94218733e+03 -5.53298319e+03 5.95e+03 1.47e-01 6.22e+01 0s 1 6.97527168e+02 -1.92604677e+03 1.04e+03 1.78e-15 1.17e+01 0s 2 3.04436246e+02 -3.52861077e+02 5.67e+01 1.44e-15 1.62e+00 0s 3 2.46209984e+02 4.05196936e+01 5.36e+00 1.55e-15 4.46e-01 0s 4 2.16773173e+02 1.60471442e+02 3.41e-01 1.33e-15 1.20e-01 0s 5 2.11171264e+02 2.03191305e+02 9.99e-02 1.05e-15 1.70e-02 0s 6 2.09022870e+02 2.08976221e+02 1.28e-03 1.03e-15 1.00e-04 0s 7 2.09000000e+02 2.09000000e+02 2.47e-09 9.51e-16 1.78e-10 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.09000000e+02 Root relaxation: objective 2.090000e+02, 110 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 209.0000000 209.00000 0.0% - 0s Explored 0 nodes (110 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.090000000000e+02, best bound 2.090000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 209 Solution: 2 x [6] 8 x [12] 10 x [44] 3 x [60] 1 x [13] 9 x [23] 8 x [24] 1 x [42] 4 x [5, 42] 10 x [53] 6 x [14] 1 x [26] 3 x [39] 2 x [20, 40] 5 x [41] 1 x [59] 1 x [2] 6 x [1, 10] 10 x [15, 21] 2 x [27] 1 x [30] 5 x [31] 7 x [36] 3 x [38] 2 x [22, 38] 3 x [43] 4 x [51, 54] 8 x [37, 58] 2 x [4, 8] 5 x [19, 22] 1 x [19, 22, 28] 2 x [4, 29] 6 x [28, 29] 1 x [32] 1 x [33] 5 x [33, 48] 1 x [16, 35, 54] 9 x [34, 35] 2 x [46] 7 x [18, 46] 6 x [11, 50] 2 x [45, 50, 54] 1 x [17, 55] 1 x [47, 54, 55] 8 x [55, 56] 2 x [3, 9] 1 x [3, 49] 4 x [3, 57] 7 x [7, 52] 5 x [25, 49] 4 x [49, 57]