Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:17:32 2013 Optimize a model with 1200 rows, 26600 columns and 54050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.15s Presolved: 1100 rows, 26450 columns, 52900 nonzeros Variable types: 26000 continuous, 450 integer (450 binary) Root relaxation: objective 2.198499e+05, 2480 iterations, 0.08 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 252722.75625 219849.939 13.0% - 0s 0 0 219873.069 0 2 252722.756 219873.069 13.0% - 0s 0 0 219879.557 0 2 252722.756 219879.557 13.0% - 0s 0 0 219887.768 0 2 252722.756 219887.768 13.0% - 0s 0 0 219887.768 0 2 252722.756 219887.768 13.0% - 0s 0 0 219887.768 0 2 252722.756 219887.768 13.0% - 0s 0 0 219890.618 0 2 252722.756 219890.618 13.0% - 0s 0 0 219890.618 0 2 252722.756 219890.618 13.0% - 0s 0 0 219890.618 0 2 252722.756 219890.618 13.0% - 0s 0 2 219909.558 0 2 252722.756 219909.558 13.0% - 0s H 81 37 222551.70375 220428.050 0.95% 23.6 2s H 108 38 222467.28942 220511.954 0.88% 26.0 2s * 265 74 23 222437.89081 220788.552 0.74% 24.0 4s * 284 75 28 222432.90926 220823.177 0.72% 25.1 4s H 297 33 221991.46200 220993.445 0.45% 26.2 4s * 298 32 13 221988.26002 220993.445 0.45% 26.3 4s 362 15 221791.604 27 1 221988.260 221782.539 0.09% 29.3 5s * 382 4 40 221983.10724 221923.775 0.03% 29.6 5s Cutting planes: Flow cover: 7 Explored 387 nodes (14075 simplex iterations) in 5.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.219831072369e+05, best bound 2.219722769858e+05, gap 0.0049%