Build (method = -2) #dp: 573 Step-3' Graph: 53 vertices and 270 arcs (0.00s) Step-4' Graph: 33 vertices and 230 arcs (0.00s) #V4/#V3 = 0.62 #A4/#A3 = 0.85 Ready! (0.00s) Optimize a model with 67 rows, 231 columns and 634 nonzeros Presolve removed 25 rows and 33 columns Presolve time: 0.00s Presolved: 42 rows, 198 columns, 543 nonzeros Variable types: 0 continuous, 198 integer (0 binary) Found heuristic solution: objective 3842.0000000 Found heuristic solution: objective 3328.0000000 Optimize a model with 42 rows, 198 columns and 543 nonzeros Presolved: 42 rows, 198 columns, 543 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.590e+02 Factor NZ : 6.790e+02 Factor Ops : 1.301e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.01428965e+04 -3.43405605e+04 7.99e+04 2.22e-16 6.13e+02 0s 1 6.51807085e+03 -1.14530643e+04 9.21e+03 5.55e-16 9.12e+01 0s 2 3.67256837e+03 -1.25679806e+03 7.33e+02 5.44e-15 1.42e+01 0s 3 2.79785092e+03 1.08993905e+03 4.71e+01 2.00e-15 4.24e+00 0s 4 2.47160682e+03 1.90337717e+03 7.84e+00 7.77e-16 1.39e+00 0s 5 2.35155462e+03 2.15783068e+03 2.70e+00 3.05e-16 4.75e-01 0s 6 2.29896279e+03 2.27465761e+03 7.14e-01 4.44e-16 6.00e-02 0s 7 2.28902865e+03 2.28646297e+03 3.53e-02 2.22e-16 6.30e-03 0s 8 2.28850073e+03 2.28849798e+03 1.21e-11 1.44e-16 6.72e-06 0s 9 2.28850000e+03 2.28850000e+03 1.91e-11 2.62e-16 6.73e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.28850000e+03 Root relaxation: objective 2.288500e+03, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2288.50000 0 2 3328.00000 2288.50000 31.2% - 0s H 0 0 2289.0000000 2288.50000 0.02% - 0s Explored 0 nodes (106 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.289000000000e+03, best bound 2.289000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2289 Solution: 88 x [19, 33] 119 x [28] 39 x [28, 34] 203 x [25, 27] 9 x [19, 27] 29 x [1, 17] 37 x [7, 15] 105 x [11, 13] 1 x [7, 13] 1 x [13, 34] 360 x [6] 62 x [5, 21] 11 x [1, 21] 22 x [2, 34] 175 x [2, 23] 220 x [1, 32] 7 x [1, 31] 9 x [7, 26] 121 x [24, 30] 3 x [1, 24] 3 x [19, 24] 23 x [14, 18] 51 x [16] 143 x [9, 16] 47 x [12] 132 x [12, 14] 39 x [10, 12] 50 x [8, 22] 53 x [8, 20] 35 x [4, 20] 47 x [3, 22] 36 x [29, 29] 1 x [20] 8 x [20, 20]