Build (method = -2) #dp: 664 Step-3' Graph: 52 vertices and 300 arcs (0.00s) Step-4' Graph: 30 vertices and 256 arcs (0.00s) #V4/#V3 = 0.58 #A4/#A3 = 0.85 Ready! (0.00s) Optimize a model with 69 rows, 257 columns and 718 nonzeros Presolve removed 27 rows and 35 columns Presolve time: 0.00s Presolved: 42 rows, 222 columns, 622 nonzeros Variable types: 0 continuous, 222 integer (0 binary) Found heuristic solution: objective 3797.0000000 Optimize a model with 42 rows, 222 columns and 622 nonzeros Presolved: 42 rows, 222 columns, 622 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.720e+02 Factor NZ : 6.460e+02 Factor Ops : 1.181e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.26174631e+04 -3.63600898e+04 1.18e+05 2.22e-16 7.44e+02 0s 1 7.05100674e+03 -1.46807409e+04 1.42e+04 4.44e-16 1.11e+02 0s 2 3.59224393e+03 -2.65710159e+03 5.38e+02 1.24e-14 1.51e+01 0s 3 2.66443306e+03 1.71214378e+03 1.93e+01 1.33e-15 2.09e+00 0s 4 2.24863979e+03 1.98881251e+03 1.47e+00 6.66e-16 5.66e-01 0s 5 2.20535570e+03 2.18791599e+03 2.45e-01 3.33e-16 3.81e-02 0s 6 2.20229829e+03 2.20118110e+03 4.61e-02 3.33e-16 2.47e-03 0s 7 2.20150074e+03 2.20149870e+03 3.86e-05 3.33e-16 4.48e-06 0s 8 2.20150000e+03 2.20150000e+03 7.23e-11 4.44e-16 4.48e-09 0s 9 2.20150000e+03 2.20150000e+03 1.99e-12 2.39e-16 5.15e-15 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.20150000e+03 Root relaxation: objective 2.201500e+03, 86 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2201.50000 0 2 3797.00000 2201.50000 42.0% - 0s H 0 0 2202.0000000 2201.50000 0.02% - 0s Explored 0 nodes (130 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.202000000000e+03, best bound 2.202000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2202 Solution: 63 x [14] 29 x [14, 23] 10 x [2] 80 x [2, 30] 101 x [30, 38] 114 x [34] 102 x [32] 3 x [31] 50 x [29, 31] 95 x [26, 29] 5 x [7, 24] 12 x [11, 19] 101 x [7, 19] 3 x [4] 33 x [4, 27] 34 x [4, 15] 72 x [3, 15] 26 x [16] 1 x [20] 12 x [20, 22] 28 x [11, 20] 34 x [18] 14 x [15, 18] 1 x [13] 31 x [12, 13] 139 x [13, 27] 132 x [10, 36] 14 x [9] 86 x [9, 21] 3 x [9, 17] 32 x [8] 7 x [8, 36] 158 x [8, 25] 124 x [6, 22] 111 x [5, 11] 75 x [1, 33] 100 x [1, 28] 70 x [35, 39] 46 x [37, 37] 3 x [33, 35] 47 x [35, 35] 1 x [33]