Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:51:19 2013 Optimize a model with 1700 rows, 128000 columns and 1351050 nonzeros Presolve removed 50 rows and 2450 columns Presolve time: 3.73s Presolved: 1650 rows, 125550 columns, 1251050 nonzeros Variable types: 125050 continuous, 500 integer (500 binary) Root relaxation: objective 1.959342e+05, 2905 iterations, 0.28 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 24 - 195934.242 - - 5s 0 0 195936.103 0 24 - 195936.103 - - 5s 0 0 195936.237 0 24 - 195936.237 - - 6s 0 0 195936.287 0 24 - 195936.287 - - 6s 0 0 195936.287 0 24 - 195936.287 - - 7s 0 0 195936.287 0 24 - 195936.287 - - 8s 0 0 195936.325 0 24 - 195936.325 - - 9s 0 0 195936.325 0 24 - 195936.325 - - 9s 0 0 195936.325 0 24 - 195936.325 - - 11s 0 2 195937.107 0 24 - 195937.107 - - 24s 11 13 196386.585 11 16 - 195959.384 - 60.6 25s 115 117 196568.481 109 8 - 195959.384 - 9.6 30s * 177 98 167 196570.46779 195959.384 0.31% 6.8 32s 233 104 196548.503 8 8 196570.468 196235.549 0.17% 14.1 35s * 292 81 38 196566.29974 196375.390 0.10% 17.3 36s 425 82 cutoff 37 196566.300 196489.554 0.04% 14.5 40s 601 114 196565.547 78 24 196566.300 196527.789 0.02% 12.2 50s 606 117 196561.040 25 24 196566.300 196527.789 0.02% 12.1 56s 611 120 196534.876 16 8 196566.300 196527.789 0.02% 20.0 60s 633 112 196561.897 32 8 196566.300 196546.617 0.01% 19.7 65s * 649 104 41 196564.90563 196546.617 0.01% 19.4 66s Cutting planes: Flow cover: 5 Explored 650 nodes (17410 simplex iterations) in 66.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965649056339e+05, best bound 1.965466168338e+05, gap 0.0093%