Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:23:30 2013 Optimize a model with 1600 rows, 100800 columns and 201700 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.30s Presolved: 1400 rows, 100500 columns, 201000 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 8.570461e+05, 6100 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 1 - 857046.104 - - 0s H 0 0 864531.38994 857046.104 0.87% - 1s 0 0 857084.639 0 1 864531.390 857084.639 0.86% - 1s 0 0 857097.034 0 1 864531.390 857097.034 0.86% - 1s 0 0 857103.406 0 1 864531.390 857103.406 0.86% - 1s 0 0 857108.802 0 1 864531.390 857108.802 0.86% - 1s 0 0 857111.275 0 1 864531.390 857111.275 0.86% - 2s 0 0 857115.651 0 1 864531.390 857115.651 0.86% - 2s 0 0 857117.492 0 1 864531.390 857117.492 0.86% - 2s 0 0 857119.363 0 1 864531.390 857119.363 0.86% - 2s 0 0 857120.383 0 1 864531.390 857120.383 0.86% - 3s 0 0 857122.657 0 1 864531.390 857122.657 0.86% - 3s 0 0 857123.554 0 1 864531.390 857123.554 0.86% - 3s 0 0 857123.792 0 1 864531.390 857123.792 0.86% - 3s 0 0 857123.865 0 1 864531.390 857123.865 0.86% - 3s 0 0 857124.042 0 1 864531.390 857124.042 0.86% - 4s 0 0 857124.073 0 1 864531.390 857124.073 0.86% - 4s 0 0 857124.143 0 1 864531.390 857124.143 0.86% - 4s 0 0 857124.153 0 1 864531.390 857124.153 0.86% - 4s 0 0 857124.153 0 1 864531.390 857124.153 0.86% - 5s 0 2 857519.620 0 1 864531.390 857519.620 0.81% - 5s * 16 5 15 859564.51177 858292.034 0.15% 101 8s * 22 7 7 859105.49939 858413.538 0.08% 82.5 8s 36 12 858997.522 15 1 859105.499 858471.754 0.07% 62.2 10s * 47 0 11 858977.34942 858977.349 0.0% 70.4 10s Cutting planes: Flow cover: 17 Explored 48 nodes (10402 simplex iterations) in 10.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.589773494193e+05, best bound 8.589773494193e+05, gap 0.0%