Build (method = -2) #dp: 846 Step-3' Graph: 24 vertices and 112 arcs (0.00s) Step-4' Graph: 11 vertices and 86 arcs (0.00s) #V4/#V3 = 0.46 #A4/#A3 = 0.77 Ready! (0.00s) Optimize a model with 71 rows, 87 columns and 244 nonzeros Presolve removed 52 rows and 52 columns Presolve time: 0.00s Presolved: 19 rows, 35 columns, 90 nonzeros Variable types: 0 continuous, 35 integer (0 binary) Found heuristic solution: objective 1948.0000000 Found heuristic solution: objective 1429.0000000 Optimize a model with 19 rows, 35 columns and 90 nonzeros Presolved: 19 rows, 35 columns, 90 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.500e+01 Factor NZ : 1.900e+02 Factor Ops : 2.470e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.73987849e+03 -5.22518495e+03 4.83e+03 2.22e-16 4.03e+02 0s 1 2.41879283e+03 -4.29803450e+02 3.00e+02 4.44e-16 4.47e+01 0s 2 1.56557845e+03 8.04542797e+02 4.13e+00 9.99e-16 9.57e+00 0s 3 1.39432568e+03 1.32546188e+03 2.21e-01 1.67e-16 8.62e-01 0s 4 1.38461599e+03 1.38431634e+03 1.14e-13 2.22e-16 3.75e-03 0s 5 1.38450000e+03 1.38450000e+03 5.68e-14 3.33e-16 7.38e-09 0s 6 1.38450000e+03 1.38450000e+03 1.14e-13 2.22e-16 8.03e-15 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.38450000e+03 Root relaxation: objective 1.384500e+03, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1384.50000 0 2 1429.00000 1384.50000 3.11% - 0s H 0 0 1385.0000000 1384.50000 0.04% - 0s Explored 0 nodes (18 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.385000000000e+03, best bound 1.385000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1385 Solution: 8 x [29] 24 x [52] 12 x [35] 26 x [13] 34 x [4] 4 x [39, 53] 43 x [7] 27 x [6, 14] 7 x [40, 53] 12 x [27] 36 x [16] 26 x [45, 51] 44 x [28] 26 x [15, 51] 19 x [26, 53] 94 x [3] 45 x [25] 23 x [14, 58] 32 x [33, 51] 24 x [36, 59] 44 x [2] 1 x [32] 2 x [14, 32] 5 x [23, 59] 10 x [19, 59] 23 x [14, 47] 44 x [21] 10 x [9, 14] 16 x [41, 51] 1 x [41, 53] 53 x [17] 3 x [37, 46] 22 x [30, 37] 12 x [1, 37] 22 x [10, 37] 48 x [49] 1 x [37, 44] 23 x [8, 38] 5 x [5, 37] 38 x [54] 37 x [34] 31 x [31] 27 x [22, 38] 14 x [50] 4 x [11, 37] 8 x [37, 43] 25 x [38, 57] 47 x [18] 39 x [55, 60] 6 x [48, 60] 1 x [37, 48] 83 x [24] 14 x [24, 42] 53 x [42, 56] 10 x [12, 20] 36 x [12, 12] 1 x [20]