Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:35:09 2013 Optimize a model with 1600 rows, 100600 columns and 201400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.23s Presolved: 1500 rows, 100500 columns, 201100 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 8.570461e+05, 6489 iterations, 0.44 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% - 0s 0 0 857084.895 0 1 864531.390 857084.895 0.86% - 1s 0 0 857093.895 0 1 864531.390 857093.895 0.86% - 1s 0 0 857105.267 0 1 864531.390 857105.267 0.86% - 1s 0 0 857105.802 0 1 864531.390 857105.802 0.86% - 1s 0 0 857113.674 0 1 864531.390 857113.674 0.86% - 1s 0 0 857113.802 0 1 864531.390 857113.802 0.86% - 2s 0 0 857117.151 0 1 864531.390 857117.151 0.86% - 2s 0 0 857119.058 0 1 864531.390 857119.058 0.86% - 2s 0 0 857120.889 0 1 864531.390 857120.889 0.86% - 2s 0 0 857122.273 0 1 864531.390 857122.273 0.86% - 2s 0 0 857123.303 0 1 864531.390 857123.303 0.86% - 2s 0 0 857123.754 0 1 864531.390 857123.754 0.86% - 3s 0 0 857123.956 0 1 864531.390 857123.956 0.86% - 3s 0 0 857123.986 0 1 864531.390 857123.986 0.86% - 3s 0 0 857124.089 0 1 864531.390 857124.089 0.86% - 3s 0 0 857124.167 0 1 864531.390 857124.167 0.86% - 4s 0 0 857124.240 0 1 864531.390 857124.240 0.86% - 4s 0 0 857124.305 0 1 864531.390 857124.305 0.86% - 4s 0 0 857124.305 0 1 864531.390 857124.305 0.86% - 4s 0 2 857147.337 0 1 864531.390 857147.337 0.85% - 5s * 15 5 15 859564.51177 858214.968 0.16% 98.8 7s * 22 7 6 859105.49939 858413.538 0.08% 103 8s * 56 0 11 858977.34942 858977.349 0.0% 67.9 9s Cutting planes: Flow cover: 18 Explored 57 nodes (11437 simplex iterations) in 9.82 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 0.0000%