Build (method = -2) #dp: 7894 Step-3' Graph: 148 vertices and 3526 arcs (0.04s) Step-4' Graph: 108 vertices and 3446 arcs (0.04s) #V4/#V3 = 0.73 #A4/#A3 = 0.98 Ready! (0.04s) Optimize a model with 228 rows, 3447 columns and 10129 nonzeros Presolve removed 21 rows and 21 columns Presolve time: 0.05s Presolved: 207 rows, 3426 columns, 10099 nonzeros Variable types: 0 continuous, 3426 integer (3258 binary) Optimize a model with 207 rows, 3426 columns and 10099 nonzeros Presolved: 207 rows, 3426 columns, 10099 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.256e+03 Factor NZ : 8.859e+03 (roughly 2 MBytes of memory) Factor Ops : 5.711e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.60992246e+03 -1.29189808e+04 1.20e+04 1.29e-01 8.71e+00 0s 1 9.15595701e+02 -3.60097761e+03 1.55e+03 9.57e-02 1.46e+00 0s 2 2.48023879e+02 -4.43993319e+02 2.29e+02 1.26e-02 2.22e-01 0s 3 8.15273511e+01 -7.29793739e+01 1.74e+01 1.34e-03 3.17e-02 0s 4 6.40164299e+01 2.10534443e+01 1.97e+00 8.43e-05 6.83e-03 0s 5 6.05000387e+01 3.28152416e+01 1.24e+00 6.68e-06 4.28e-03 0s 6 5.75872831e+01 3.76405055e+01 8.02e-01 1.96e-05 3.04e-03 0s 7 5.60936884e+01 4.13892620e+01 6.46e-01 2.91e-16 2.22e-03 0s 8 5.49583093e+01 4.40109452e+01 5.11e-01 2.63e-16 1.65e-03 0s 9 5.27263035e+01 4.54922242e+01 2.66e-01 2.22e-16 1.08e-03 0s 10 5.19528018e+01 4.71927329e+01 2.08e-01 2.53e-16 7.06e-04 0s 11 4.98547860e+01 4.80843608e+01 2.38e-02 2.22e-16 2.60e-04 0s 12 4.94108409e+01 4.84695775e+01 6.65e-03 2.22e-16 1.38e-04 0s 13 4.92603450e+01 4.88174094e+01 2.72e-03 4.44e-16 6.49e-05 0s 14 4.91899620e+01 4.89031959e+01 1.48e-03 2.89e-16 4.20e-05 0s 15 4.91560863e+01 4.89873600e+01 9.83e-04 3.06e-16 2.47e-05 0s 16 4.91210401e+01 4.90415460e+01 5.03e-04 2.22e-16 1.16e-05 0s 17 4.90948102e+01 4.90742092e+01 9.36e-05 2.22e-16 3.01e-06 0s 18 4.90853653e+01 4.90847208e+01 1.04e-07 2.25e-16 9.43e-08 0s 19 4.90850344e+01 4.90850337e+01 7.36e-13 4.44e-16 1.11e-10 0s 20 4.90850340e+01 4.90850340e+01 1.03e-12 4.44e-16 1.20e-16 0s Barrier solved model in 20 iterations and 0.04 seconds Optimal objective 4.90850340e+01 Root relaxation: objective 4.908503e+01, 570 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49.08503 0 41 - 49.08503 - - 0s H 0 0 50.0000000 49.08503 1.83% - 0s Explored 0 nodes (1525 simplex iterations) in 0.23 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.23 seconds Total run time: 0.29 seconds Objective: 50 Solution: 1 x [15, 105] 1 x [2, 49] 1 x [18, 19] 1 x [14, 46, 110] 1 x [48, 119] 1 x [1, 69, 89] 1 x [20, 35, 82] 1 x [27, 43, 102] 1 x [29, 99] 1 x [26, 61, 76] 1 x [22, 64, 100] 1 x [36, 75] 1 x [59, 60, 79] 1 x [50, 97, 109] 1 x [63, 94] 1 x [17, 52] 1 x [16, 116] 1 x [34, 118] 1 x [108, 114] 1 x [93, 95] 1 x [72, 86] 1 x [38, 57] 1 x [44, 80] 1 x [4, 11, 40] 1 x [81, 113] 1 x [74, 85] 1 x [58, 112] 1 x [33, 42, 98] 1 x [25, 107] 1 x [24, 111] 1 x [47, 54] 1 x [12, 62, 70] 1 x [88, 115] 1 x [51, 71] 1 x [21, 106] 1 x [5, 55] 1 x [68, 73] 1 x [7, 83] 1 x [78, 92] 1 x [56, 66] 1 x [8, 117] 1 x [23, 31] 1 x [3, 30, 45] 1 x [32, 41, 67] 1 x [6, 77, 101] 1 x [53, 103, 104] 1 x [87, 90, 120] 1 x [9, 65, 91] 1 x [37, 84, 96] 1 x [10, 13, 28, 39]