Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:31:26 2013 Optimize a model with 2400 rows, 103200 columns and 208100 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.64s Presolved: 2200 rows, 102900 columns, 205800 nonzeros Variable types: 102000 continuous, 900 integer (900 binary) Root relaxation: objective 9.053666e+05, 7781 iterations, 1.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 2 - 905366.638 - - 1s H 0 0 1029085.9837 905366.638 12.0% - 2s 0 0 905393.238 0 2 1029085.98 905393.238 12.0% - 2s 0 0 905442.954 0 2 1029085.98 905442.954 12.0% - 3s H 0 0 909956.07103 905442.954 0.50% - 3s 0 0 905445.010 0 2 909956.071 905445.010 0.50% - 3s 0 0 905445.010 0 2 909956.071 905445.010 0.50% - 4s 0 0 905452.391 0 2 909956.071 905452.391 0.49% - 4s 0 0 905452.757 0 2 909956.071 905452.757 0.49% - 5s 0 0 905458.497 0 2 909956.071 905458.497 0.49% - 5s 0 0 905460.277 0 2 909956.071 905460.277 0.49% - 6s 0 0 905461.206 0 2 909956.071 905461.206 0.49% - 6s 0 0 905462.091 0 2 909956.071 905462.091 0.49% - 6s 0 0 905462.968 0 2 909956.071 905462.968 0.49% - 7s 0 0 905463.648 0 2 909956.071 905463.648 0.49% - 7s 0 0 905463.648 0 2 909956.071 905463.648 0.49% - 8s 0 2 905469.969 0 2 909956.071 905469.969 0.49% - 8s 6 8 907283.370 6 1 909956.071 906238.749 0.41% 132 10s * 20 13 19 908006.29248 906238.749 0.19% 65.8 11s 39 12 907162.756 2 1 908006.292 907162.756 0.09% 102 15s Cutting planes: Flow cover: 22 Explored 69 nodes (16697 simplex iterations) in 18.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.080062924750e+05, best bound 9.079202440033e+05, gap 0.0095%