Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:54:52 2013 Optimize a model with 1600 rows, 76750 columns and 650950 nonzeros Presolve removed 50 rows and 1250 columns Presolve time: 1.31s Presolved: 1550 rows, 75500 columns, 600950 nonzeros Variable types: 75050 continuous, 450 integer (450 binary) Root relaxation: objective 1.626233e+05, 2720 iterations, 0.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 35 - 162623.326 - - 1s 0 0 162627.838 0 35 - 162627.838 - - 2s 0 0 162628.367 0 35 - 162628.367 - - 2s 0 0 162628.919 0 35 - 162628.919 - - 2s 0 0 162628.919 0 35 - 162628.919 - - 3s 0 0 162628.919 0 35 - 162628.919 - - 3s 0 0 162628.919 0 35 - 162628.919 - - 4s 0 0 162628.919 0 35 - 162628.919 - - 4s 0 0 162628.919 0 35 - 162628.919 - - 5s 0 0 162628.919 0 35 - 162628.919 - - 5s 0 2 162633.421 0 35 - 162633.421 - - 12s 82 84 163596.509 60 6 - 162645.125 - 18.9 15s * 126 86 104 163604.25522 162645.125 0.59% 13.2 16s H 155 69 163528.26242 162650.746 0.54% 17.0 17s H 209 38 162947.14017 162651.096 0.18% 15.8 18s 236 33 162868.825 8 12 162947.140 162707.549 0.15% 19.4 20s H 290 53 162945.40326 162832.141 0.07% 19.0 21s * 298 53 26 162945.34999 162832.141 0.07% 18.7 21s H 317 47 162922.01606 162853.782 0.04% 18.3 21s * 324 49 23 162921.26975 162853.782 0.04% 18.0 22s * 359 57 31 162921.22997 162856.280 0.04% 16.7 22s * 363 57 34 162920.84862 162856.280 0.04% 16.5 22s * 433 74 33 162919.75923 162862.902 0.03% 15.1 23s 510 83 162897.003 20 8 162919.759 162872.127 0.03% 13.7 25s Cutting planes: Flow cover: 11 Explored 740 nodes (14090 simplex iterations) in 29.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629197592253e+05, best bound 1.629034787520e+05, gap 0.0100%