Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:39:16 2013 Optimize a model with 1400 rows, 100500 columns and 201000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.27s Presolved: 1600 rows, 100600 columns, 201300 nonzeros Variable types: 100400 continuous, 200 integer (200 binary) Root relaxation: objective 8.570461e+05, 6807 iterations, 0.51 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 2 - 857046.104 - - 0s H 0 0 869125.18416 857046.104 1.39% - 1s H 0 0 864531.38994 857046.104 0.87% - 1s 0 0 857083.871 0 2 864531.390 857083.871 0.86% - 2s 0 0 857093.267 0 2 864531.390 857093.267 0.86% - 2s 0 0 857104.523 0 2 864531.390 857104.523 0.86% - 2s 0 0 857104.523 0 2 864531.390 857104.523 0.86% - 2s 0 0 857106.418 0 2 864531.390 857106.418 0.86% - 2s 0 0 857115.592 0 2 864531.390 857115.592 0.86% - 3s 0 0 857115.592 0 2 864531.390 857115.592 0.86% - 3s 0 0 857117.262 0 2 864531.390 857117.262 0.86% - 3s 0 0 857120.592 0 2 864531.390 857120.592 0.86% - 3s 0 0 857122.161 0 2 864531.390 857122.161 0.86% - 3s 0 0 857123.285 0 2 864531.390 857123.285 0.86% - 4s 0 0 857123.695 0 2 864531.390 857123.695 0.86% - 4s 0 0 857123.900 0 2 864531.390 857123.900 0.86% - 4s 0 0 857124.028 0 2 864531.390 857124.028 0.86% - 4s 0 0 857124.034 0 2 864531.390 857124.034 0.86% - 4s 0 0 857124.142 0 2 864531.390 857124.142 0.86% - 5s 0 0 857124.182 0 2 864531.390 857124.182 0.86% - 5s 0 0 857124.184 0 2 864531.390 857124.184 0.86% - 5s 0 0 857124.184 0 2 864531.390 857124.184 0.86% - 5s 0 2 857147.345 0 2 864531.390 857147.345 0.85% - 6s * 12 7 11 860919.31534 858124.597 0.32% 140 9s 17 5 859524.865 13 2 860919.315 858124.597 0.32% 110 10s * 19 2 15 859564.51177 858124.597 0.17% 103 10s H 27 5 859164.73423 858413.538 0.09% 104 11s * 38 5 6 859103.12167 858484.539 0.07% 86.6 12s * 61 0 11 858977.34942 858977.349 0.0% 71.8 13s Cutting planes: Flow cover: 18 Explored 62 nodes (13276 simplex iterations) in 13.07 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%