Build (method = -2) #dp: 12072 Step-3' Graph: 577 vertices and 5437 arcs (0.07s) Step-4' Graph: 568 vertices and 5419 arcs (0.08s) #V4/#V3 = 0.98 #A4/#A3 = 1.00 Ready! (0.08s) Optimize a model with 607 rows, 5420 columns and 15141 nonzeros Presolve removed 39 rows and 67 columns Presolve time: 0.08s Presolved: 568 rows, 5353 columns, 15045 nonzeros Variable types: 0 continuous, 5353 integer (3 binary) Found heuristic solution: objective 317.0000000 Optimize a model with 568 rows, 5353 columns and 15045 nonzeros Presolved: 568 rows, 5353 columns, 15045 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 9.450e+03 Factor NZ : 5.861e+04 (roughly 3 MBytes of memory) Factor Ops : 1.060e+07 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.74938688e+03 -1.58700098e+05 1.30e+05 2.72e-01 1.86e+02 0s 1 2.18740544e+03 -8.72633385e+04 3.20e+04 2.11e-15 4.77e+01 0s 2 8.81793249e+02 -4.08507482e+04 7.23e+03 1.55e-15 1.16e+01 0s 3 6.76983865e+02 -1.64791564e+04 1.47e+03 2.66e-15 2.85e+00 0s 4 5.38638881e+02 -3.31197353e+03 9.26e+01 4.00e-15 4.15e-01 0s 5 5.02246769e+02 -1.80962490e+03 5.19e+01 3.55e-15 2.37e-01 0s 6 4.39226545e+02 -1.25785484e+03 2.74e+01 2.89e-15 1.67e-01 0s 7 3.85504195e+02 -7.36490492e+02 1.68e+01 2.84e-15 1.09e-01 0s 8 3.84516602e+02 -5.23878665e+02 1.46e+01 4.22e-15 8.77e-02 0s 9 3.82429623e+02 -5.04521735e+02 1.30e+01 4.00e-15 8.53e-02 0s 10 3.78547271e+02 -4.62103255e+02 1.13e+01 4.34e-15 8.05e-02 0s 11 3.28953146e+02 -2.99184642e+02 2.45e+00 3.89e-15 5.90e-02 0s 12 2.37598657e+02 -7.67584106e+01 1.32e+00 2.64e-15 2.95e-02 0s 13 2.03568110e+02 5.78631109e+01 9.25e-01 2.41e-15 1.37e-02 0s 14 1.77899463e+02 8.68878478e+01 6.26e-01 2.36e-15 8.56e-03 0s 15 1.59998339e+02 1.00439161e+02 3.90e-01 2.95e-15 5.59e-03 0s 16 1.49247978e+02 1.09344027e+02 2.46e-01 2.86e-15 3.74e-03 0s 17 1.42723899e+02 1.19068693e+02 1.51e-01 2.60e-15 2.22e-03 0s 18 1.38769225e+02 1.23822544e+02 8.81e-02 2.87e-15 1.40e-03 0s 19 1.35879855e+02 1.27254483e+02 4.92e-02 2.59e-15 8.07e-04 0s 20 1.35869113e+02 1.27406642e+02 4.77e-02 3.33e-15 7.92e-04 0s 21 1.34822160e+02 1.27936491e+02 3.41e-02 3.91e-15 6.44e-04 0s 22 1.34337309e+02 1.29779792e+02 2.79e-02 3.12e-15 4.26e-04 0s 23 1.33858043e+02 1.29913734e+02 2.14e-02 3.69e-15 3.69e-04 0s 24 1.33570131e+02 1.30165513e+02 1.74e-02 4.23e-15 3.18e-04 0s 25 1.33330413e+02 1.30829399e+02 1.40e-02 3.62e-15 2.34e-04 0s 26 1.33078697e+02 1.31239955e+02 8.90e-03 3.91e-15 1.72e-04 0s 27 1.32859359e+02 1.31635527e+02 4.66e-03 3.07e-15 1.14e-04 0s 28 1.32793988e+02 1.31843636e+02 3.87e-03 3.71e-15 8.87e-05 0s 29 1.32723131e+02 1.31998302e+02 2.76e-03 3.29e-15 6.76e-05 0s 30 1.32706405e+02 1.32124893e+02 2.49e-03 3.54e-15 5.43e-05 0s 31 1.32656431e+02 1.32246294e+02 1.76e-03 3.48e-15 3.83e-05 0s 32 1.32555740e+02 1.32306865e+02 5.06e-04 3.16e-15 2.32e-05 0s 33 1.32528651e+02 1.32328925e+02 3.72e-04 3.75e-15 1.86e-05 0s 34 1.32520134e+02 1.32353273e+02 3.30e-04 3.30e-15 1.56e-05 0s 35 1.32487657e+02 1.32395456e+02 1.78e-04 3.22e-15 8.60e-06 0s 36 1.32474219e+02 1.32415296e+02 1.08e-04 3.13e-15 5.49e-06 0s 37 1.32457683e+02 1.32428647e+02 4.06e-05 2.94e-15 2.71e-06 0s 38 1.32453261e+02 1.32432601e+02 2.51e-05 3.03e-15 1.93e-06 0s 39 1.32448348e+02 1.32438382e+02 7.49e-06 2.80e-15 9.29e-07 0s 40 1.32445800e+02 1.32444975e+02 5.70e-07 2.16e-15 7.68e-08 1s 41 1.32445513e+02 1.32445488e+02 1.93e-08 1.80e-15 2.30e-09 1s 42 1.32445498e+02 1.32445498e+02 3.90e-11 2.10e-15 2.30e-12 1s Barrier solved model in 42 iterations and 0.53 seconds Optimal objective 1.32445498e+02 Root relaxation: objective 1.324455e+02, 507 iterations, 0.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 132.44550 0 50 317.00000 132.44550 58.2% - 0s H 0 0 133.0000000 132.44550 0.42% - 0s Explored 0 nodes (861 simplex iterations) in 0.90 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.330000000000e+02, best bound 1.330000000000e+02, gap 0.0% Preprocessing time: 0.11 seconds Gurobi run time: 0.90 seconds Total run time: 1.01 seconds Objective: 133 Solution: 1 x [13, 26] 1 x [4, 19, 19, 36] 1 x [4, 19] 10 x [33, 35] 5 x [18, 19, 35] 1 x [10, 18] 1 x [10, 10, 18] 11 x [7, 12, 15] 1 x [15, 26, 31] 7 x [2, 9, 26] 3 x [9, 32, 34] 6 x [9, 28, 36] 5 x [6, 7, 23] 4 x [6, 8, 8, 19] 2 x [8, 28, 37] 9 x [3, 29] 4 x [11, 29, 34] 1 x [14, 28, 29] 1 x [5, 7, 24] 11 x [1, 14, 17] 5 x [17, 27, 28] 2 x [5, 5, 11, 17] 6 x [30, 39] 2 x [19, 22, 30] 3 x [19, 23, 30, 38] 4 x [8, 8, 30, 31] 2 x [10, 10, 27, 30] 1 x [11, 25, 38] 1 x [11, 21, 38] 3 x [21, 36, 38] 3 x [12, 21, 36, 38] 6 x [20, 21, 31] 2 x [5, 14, 21, 31] 4 x [5, 16, 27, 27] 4 x [5, 34, 34, 38]