Build (method = -2) #dp: 13376 Step-3' Graph: 100 vertices and 2029 arcs (0.05s) Step-4' Graph: 100 vertices and 2029 arcs (0.05s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.05s) Optimize a model with 160 rows, 2030 columns and 5942 nonzeros Presolve removed 14 rows and 14 columns Presolve time: 0.01s Presolved: 146 rows, 2016 columns, 5902 nonzeros Variable types: 0 continuous, 2016 integer (8 binary) Found heuristic solution: objective 2362.0000000 Found heuristic solution: objective 1870.0000000 Optimize a model with 146 rows, 2016 columns and 5902 nonzeros Presolved: 146 rows, 2016 columns, 5902 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.441e+03 Factor NZ : 5.844e+03 Factor Ops : 3.133e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.40200357e+04 -8.47819703e+04 4.81e+04 5.79e-02 3.68e+02 0s 1 8.62491397e+03 -5.17192181e+04 6.24e+03 5.55e-16 5.64e+01 0s 2 3.18140636e+03 -2.10985220e+04 7.50e+02 3.33e-15 9.67e+00 0s 3 2.32536310e+03 -4.47704234e+03 3.83e+01 1.78e-15 1.76e+00 0s 4 1.82892436e+03 -1.02427685e+03 7.51e+00 6.66e-16 7.10e-01 0s 5 1.59984537e+03 1.63106271e+01 4.66e+00 2.23e-16 3.93e-01 0s 6 1.28769090e+03 5.15240401e+02 1.88e+00 4.44e-16 1.91e-01 0s 7 1.19841015e+03 6.83991279e+02 1.16e+00 3.33e-16 1.27e-01 0s 8 1.11838577e+03 9.42093353e+02 5.09e-01 2.24e-16 4.35e-02 0s 9 1.09718352e+03 9.65596332e+02 3.04e-01 2.22e-16 3.24e-02 0s 10 1.07673334e+03 1.00741444e+03 1.81e-01 3.33e-16 1.71e-02 0s 11 1.06168047e+03 1.02110794e+03 1.09e-01 2.22e-16 9.99e-03 0s 12 1.05561674e+03 1.03103672e+03 7.75e-02 2.22e-16 6.05e-03 0s 13 1.05051826e+03 1.03464962e+03 4.60e-02 2.22e-16 3.90e-03 0s 14 1.04500915e+03 1.03778502e+03 1.54e-02 4.44e-16 1.78e-03 0s 15 1.04365245e+03 1.04063608e+03 8.20e-03 2.22e-16 7.41e-04 0s 16 1.04325257e+03 1.04106722e+03 6.02e-03 2.22e-16 5.37e-04 0s 17 1.04246289e+03 1.04167582e+03 1.71e-03 2.22e-16 1.93e-04 0s 18 1.04214540e+03 1.04194769e+03 4.15e-04 3.33e-16 4.86e-05 0s 19 1.04205273e+03 1.04203284e+03 1.36e-05 2.28e-16 4.88e-06 0s 20 1.04205001e+03 1.04205000e+03 2.53e-08 3.91e-16 4.16e-09 0s 21 1.04205000e+03 1.04205000e+03 2.74e-09 2.35e-16 6.50e-15 0s Barrier solved model in 21 iterations and 0.03 seconds Optimal objective 1.04205000e+03 Root relaxation: objective 1.042050e+03, 906 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1042.05000 0 40 1870.00000 1042.05000 44.3% - 0s H 0 0 1043.0000000 1042.05000 0.09% - 0s Explored 0 nodes (1351 simplex iterations) in 0.11 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.043000000000e+03, best bound 1.043000000000e+03, gap 0.0% Preprocessing time: 0.07 seconds Gurobi run time: 0.11 seconds Total run time: 0.17 seconds Objective: 1043 Solution: 89 x [22] 23 x [26] 18 x [17, 26] 1 x [26, 57] 24 x [26, 57, 57] 16 x [7] 76 x [7, 48] 23 x [8, 18] 47 x [8, 49] 1 x [8, 25] 19 x [14, 33] 17 x [38, 45] 28 x [13, 35, 37] 1 x [13, 37] 28 x [31, 47] 4 x [29, 47] 20 x [55, 56] 42 x [19, 56] 6 x [30, 52, 56] 13 x [25, 52, 56] 2 x [6, 54, 56] 43 x [40, 60] 3 x [32, 39, 60] 14 x [10, 32, 60] 21 x [50, 58] 30 x [39, 46, 58] 6 x [35, 39, 58] 65 x [15, 27] 9 x [28, 53] 17 x [20, 28, 53] 23 x [28, 28] 4 x [21, 36, 37] 14 x [21, 29, 42, 42] 8 x [12, 53] 6 x [23, 33, 53] 1 x [43, 53, 54] 1 x [34, 53, 54] 1 x [29, 53] 1 x [15, 36, 49] 3 x [36, 38, 51] 1 x [11, 36, 51] 4 x [6, 36, 50] 1 x [5, 16, 36, 37] 26 x [1, 2, 36] 6 x [10, 11, 16, 36] 1 x [36, 36, 49] 17 x [25, 36, 36] 16 x [24, 42, 59] 46 x [4, 24, 41] 7 x [3, 11, 24] 23 x [6, 24, 44] 15 x [15, 33, 59] 16 x [6, 15, 51] 1 x [15, 32, 39] 1 x [5, 9, 29] 33 x [3, 23, 54] 3 x [5, 23, 43] 6 x [1, 23, 34] 18 x [3, 29, 31] 30 x [3, 5, 29] 3 x [10, 10, 35, 37, 50] 1 x [5, 43]