Build (method = -2) #dp: 3057 Step-3' Graph: 81 vertices and 1001 arcs (0.01s) Step-4' Graph: 80 vertices and 999 arcs (0.01s) #V4/#V3 = 0.99 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 145 rows, 1000 columns and 2844 nonzeros Presolve removed 42 rows and 44 columns Presolve time: 0.02s Presolved: 103 rows, 956 columns, 2732 nonzeros Variable types: 0 continuous, 956 integer (378 binary) Found heuristic solution: objective 82.0000000 Optimize a model with 103 rows, 956 columns and 2732 nonzeros Presolved: 103 rows, 956 columns, 2732 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.106e+03 Factor NZ : 3.830e+03 Factor Ops : 1.888e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.90391707e+03 -4.08143869e+03 2.76e+03 1.64e-01 2.35e+01 0s 1 5.27927328e+02 -1.80093598e+03 5.54e+02 4.44e-16 5.06e+00 0s 2 1.64072934e+02 -6.61579207e+02 5.62e+01 3.00e-15 7.69e-01 0s 3 8.83210774e+01 -4.49030448e+01 2.52e+00 3.33e-16 7.86e-02 0s 4 6.76673575e+01 1.68634402e+01 2.84e-01 4.44e-16 2.70e-02 0s 5 6.30589601e+01 3.38028896e+01 1.82e-01 2.08e-16 1.55e-02 0s 6 5.88322281e+01 4.19794908e+01 1.06e-01 1.92e-16 8.88e-03 0s 7 5.53032711e+01 4.60429702e+01 5.29e-02 1.49e-16 4.87e-03 0s 8 5.39096367e+01 4.82200266e+01 3.11e-02 2.22e-16 2.99e-03 0s 9 5.27029676e+01 4.97730225e+01 1.41e-02 1.49e-16 1.53e-03 0s 10 5.18928929e+01 5.08838149e+01 3.08e-03 1.67e-16 5.26e-04 0s 11 5.16337495e+01 5.14249449e+01 1.25e-04 1.51e-16 1.09e-04 0s 12 5.15734383e+01 5.15642337e+01 3.69e-14 2.22e-16 4.78e-06 0s 13 5.15714290e+01 5.15714284e+01 1.49e-13 3.33e-16 3.02e-10 0s 14 5.15714286e+01 5.15714286e+01 7.19e-13 2.22e-16 3.14e-16 0s Barrier solved model in 14 iterations and 0.01 seconds Optimal objective 5.15714286e+01 Root relaxation: objective 5.157143e+01, 271 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 51.57143 0 15 82.00000 51.57143 37.1% - 0s H 0 0 54.0000000 51.57143 4.50% - 0s H 0 0 52.0000000 51.57143 0.82% - 0s Explored 0 nodes (656 simplex iterations) in 0.06 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.200000000000e+01, best bound 5.200000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.06 seconds Total run time: 0.08 seconds Objective: 52 Solution: 3 x [65] 1 x [64] 1 x [63] 1 x [62] 1 x [4, 61] 1 x [5, 60] 1 x [59] 2 x [5, 58] 3 x [57] 1 x [7, 56] 1 x [1, 8, 55] 1 x [6, 55] 1 x [9, 54] 1 x [9, 53] 1 x [10, 52] 1 x [11, 51] 1 x [13, 50] 1 x [14, 49] 1 x [12, 48] 2 x [17, 47] 1 x [18, 46] 1 x [19, 45] 1 x [17, 45] 2 x [20, 44] 1 x [22, 43] 1 x [18, 42] 2 x [19, 41] 1 x [23, 40] 1 x [3, 21, 40] 1 x [24, 39] 2 x [26, 38] 2 x [25, 38] 1 x [11, 13, 38] 1 x [27, 37] 1 x [2, 25, 37] 1 x [9, 16, 36] 1 x [28, 35] 1 x [12, 15, 34] 1 x [33] 1 x [30, 32] 1 x [31, 31] 1 x [15, 15, 29]