Build (method = -2) #dp: 6128 Step-3' Graph: 110 vertices and 2832 arcs (0.03s) Step-4' Graph: 109 vertices and 2830 arcs (0.03s) #V4/#V3 = 0.99 #A4/#A3 = 1.00 Ready! (0.03s) Optimize a model with 188 rows, 2831 columns and 8281 nonzeros Presolve removed 28 rows and 28 columns Presolve time: 0.05s Presolved: 160 rows, 2803 columns, 8174 nonzeros Variable types: 0 continuous, 2803 integer (204 binary) Found heuristic solution: objective 222.0000000 Found heuristic solution: objective 198.0000000 Optimize a model with 160 rows, 2803 columns and 8174 nonzeros Presolved: 160 rows, 2803 columns, 8174 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.910e+03 Factor NZ : 8.000e+03 (roughly 1 MByte of memory) Factor Ops : 5.481e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.94296178e+03 -3.56240443e+04 2.49e+04 8.11e-02 5.22e+01 0s 1 1.54970917e+03 -1.20946730e+04 3.86e+03 7.77e-16 9.11e+00 0s 2 4.58574007e+02 -4.42050821e+03 4.47e+02 4.00e-15 1.52e+00 0s 3 2.79144490e+02 -9.53347970e+02 4.67e+01 3.55e-15 2.63e-01 0s 4 2.41256529e+02 -3.93485665e+02 1.44e+01 1.89e-15 1.21e-01 0s 5 2.13053075e+02 -2.29319732e+02 9.67e+00 1.11e-15 8.35e-02 0s 6 1.56408750e+02 -9.33957902e+01 4.56e+00 8.88e-16 4.63e-02 0s 7 1.36206814e+02 -7.76378240e+00 2.96e+00 7.84e-16 2.65e-02 0s 8 1.21627334e+02 4.53823832e+01 1.71e+00 6.94e-16 1.39e-02 0s 9 1.10174430e+02 6.11847758e+01 8.90e-01 9.19e-16 8.86e-03 0s 10 1.06063225e+02 7.22106395e+01 4.54e-01 8.30e-16 6.07e-03 0s 11 1.01986447e+02 9.24507980e+01 1.03e-01 6.76e-16 1.69e-03 0s 12 1.00512713e+02 9.51484190e+01 2.95e-02 6.39e-16 9.50e-04 0s 13 9.99942154e+01 9.70419483e+01 1.31e-02 6.46e-16 5.23e-04 0s 14 9.97317873e+01 9.80280911e+01 6.56e-03 7.29e-16 3.02e-04 0s 15 9.95853472e+01 9.87342436e+01 3.24e-03 6.35e-16 1.51e-04 0s 16 9.95031335e+01 9.90569189e+01 1.69e-03 6.44e-16 7.90e-05 0s 17 9.94788144e+01 9.92769452e+01 1.06e-03 5.55e-16 3.57e-05 0s 18 9.94285927e+01 9.94210783e+01 3.77e-14 4.73e-16 1.33e-06 0s 19 9.94266686e+01 9.94266611e+01 8.53e-14 6.98e-16 1.33e-09 0s 20 9.94266667e+01 9.94266667e+01 1.08e-13 6.32e-16 1.37e-15 0s Barrier solved model in 20 iterations and 0.04 seconds Optimal objective 9.94266667e+01 Root relaxation: objective 9.942667e+01, 1505 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99.42667 0 59 198.00000 99.42667 49.8% - 0s H 0 0 101.0000000 99.42667 1.56% - 0s H 0 0 100.0000000 99.42667 0.57% - 0s Explored 0 nodes (2791 simplex iterations) in 0.37 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.000000000000e+02, best bound 1.000000000000e+02, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.37 seconds Total run time: 0.42 seconds Objective: 100 Solution: 4 x [30, 79] 2 x [4, 8, 79] 4 x [31, 78] 1 x [1, 13, 77] 2 x [3, 11, 77] 2 x [33, 76] 4 x [34, 75] 4 x [35, 74] 2 x [36, 73] 1 x [3, 15, 73] 1 x [8, 10, 73] 1 x [37, 72] 3 x [38, 71] 2 x [39, 70] 1 x [40, 69] 5 x [41, 68] 2 x [42, 67] 2 x [43, 66] 2 x [44, 65] 3 x [45, 64] 2 x [46, 63] 1 x [47, 62] 1 x [46, 62] 2 x [4, 24, 62] 1 x [48, 61] 2 x [14, 16, 61] 3 x [49, 60] 2 x [50, 59] 2 x [51, 58] 1 x [52, 57] 2 x [1, 33, 56] 2 x [53, 55] 2 x [8, 28, 54] 2 x [12, 27, 52] 2 x [15, 25, 51] 2 x [20, 20, 50] 2 x [18, 24, 49] 1 x [13, 32, 46] 1 x [19, 26, 46] 3 x [18, 29, 44] 1 x [15, 33, 43] 1 x [5, 9, 13, 43] 1 x [22, 26, 42] 1 x [7, 42, 42] 2 x [23, 27, 40] 2 x [5, 6, 21, 40] 1 x [21, 30, 39] 1 x [17, 37, 37] 1 x [23, 32, 35] 1 x [6, 7, 24, 33] 1 x [24, 33, 33] 1 x [2, 19, 23, 28] 1 x [4, 7, 10, 25] 1 x [8, 15, 17]