Build (method = -2) #dp: 2635 Step-3' Graph: 81 vertices and 841 arcs (0.01s) Step-4' Graph: 81 vertices and 841 arcs (0.01s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 121 rows, 842 columns and 2392 nonzeros Presolve removed 25 rows and 28 columns Presolve time: 0.01s Presolved: 96 rows, 814 columns, 2291 nonzeros Variable types: 0 continuous, 814 integer (0 binary) Found heuristic solution: objective 2287.0000000 Found heuristic solution: objective 2079.0000000 Optimize a model with 96 rows, 814 columns and 2291 nonzeros Presolved: 96 rows, 814 columns, 2291 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.395e+03 Factor NZ : 3.045e+03 Factor Ops : 1.259e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.49651510e+04 -6.38124993e+04 7.90e+04 2.22e-16 3.59e+02 0s 1 5.47516886e+03 -3.18055117e+04 1.54e+04 7.77e-16 7.70e+01 0s 2 2.57634581e+03 -1.03619416e+04 1.39e+03 6.44e-15 1.14e+01 0s 3 2.16257548e+03 -2.97501045e+03 4.37e+00 2.89e-15 3.13e+00 0s 4 1.85685776e+03 -9.22505378e+02 7.42e-01 1.55e-15 1.69e+00 0s 5 1.55736185e+03 4.91278051e+02 2.16e-01 6.66e-16 6.48e-01 0s 6 1.41586200e+03 9.12775898e+02 1.03e-01 4.44e-16 3.06e-01 0s 7 1.31805318e+03 1.05883096e+03 3.33e-02 3.89e-16 1.57e-01 0s 8 1.27142998e+03 1.25146919e+03 9.77e-04 3.83e-16 1.21e-02 0s 9 1.26900280e+03 1.26898442e+03 9.09e-13 3.17e-16 1.12e-05 0s 10 1.26900000e+03 1.26899998e+03 9.81e-13 3.68e-16 1.12e-08 0s 11 1.26900000e+03 1.26900000e+03 7.86e-12 3.78e-16 1.12e-11 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 1.26900000e+03 Root relaxation: objective 1.269000e+03, 380 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1269.0000000 1269.00000 0.0% - 0s Explored 0 nodes (380 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.269000000000e+03, best bound 1.269000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.05 seconds Objective: 1269 Solution: 89 x [30] 96 x [6] 95 x [39] 1 x [20] 7 x [1, 4] 35 x [4, 5] 25 x [16, 40] 45 x [19, 40] 5 x [35, 40] 31 x [3, 27] 1 x [27, 35] 17 x [9] 45 x [9, 38] 13 x [31, 35] 11 x [2, 22] 2 x [2, 33] 46 x [23] 39 x [23, 29] 10 x [13, 23] 17 x [14] 56 x [11, 14, 17] 3 x [5, 14, 35] 6 x [5, 14] 31 x [24, 37] 19 x [12] 1 x [12, 37] 10 x [12, 29] 54 x [12, 38] 16 x [7] 55 x [3, 7] 1 x [8] 44 x [8, 13] 40 x [8, 16] 1 x [1, 8] 1 x [36] 6 x [10, 36] 21 x [22, 36] 22 x [22, 34, 34, 36] 8 x [1, 17, 36] 10 x [1, 32, 36] 2 x [35, 36] 37 x [1, 13, 28] 50 x [10, 21] 6 x [1, 13, 21] 28 x [5, 16, 21] 1 x [21, 35] 44 x [15, 26] 17 x [15, 25] 1 x [15, 35] 48 x [18, 18]