Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:17:32 2013 Optimize a model with 800 rows, 25400 columns and 50850 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.12s Presolved: 700 rows, 25250 columns, 50500 nonzeros Variable types: 25200 continuous, 50 integer (50 binary) Root relaxation: objective 2.198499e+05, 2548 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 219849.939 0 2 - 219849.939 - - 0s H 0 0 224116.92822 219849.939 1.90% - 0s H 0 0 220916.27003 219849.939 0.48% - 0s 0 0 219872.353 0 2 220916.270 219872.353 0.47% - 0s 0 0 219883.483 0 2 220916.270 219883.483 0.47% - 0s 0 0 219885.800 0 2 220916.270 219885.800 0.47% - 0s 0 0 219890.548 0 2 220916.270 219890.548 0.46% - 0s 0 0 219894.922 0 2 220916.270 219894.922 0.46% - 0s 0 0 219899.801 0 2 220916.270 219899.801 0.46% - 0s 0 0 219899.801 0 2 220916.270 219899.801 0.46% - 0s 0 0 219899.801 0 2 220916.270 219899.801 0.46% - 0s 0 0 219899.801 0 2 220916.270 219899.801 0.46% - 0s 0 0 219899.801 0 2 220916.270 219899.801 0.46% - 0s 0 0 219899.801 0 2 220916.270 219899.801 0.46% - 1s 0 2 219909.558 0 2 220916.270 219909.558 0.46% - 1s Cutting planes: Flow cover: 10 Explored 9 nodes (3569 simplex iterations) in 1.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.209162700342e+05, best bound 2.209162700342e+05, gap 0.0%