Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:20:01 2013 Optimize a model with 1100 rows, 25850 columns and 53800 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.13s Presolved: 1050 rows, 25800 columns, 53250 nonzeros Variable types: 25600 continuous, 200 integer (200 binary) Root relaxation: objective 2.198499e+05, 2139 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 6 - 219849.939 - - 0s H 0 0 252722.75625 219849.939 13.0% - 0s H 0 0 225798.08025 219849.939 2.63% - 0s 0 0 219872.353 0 6 225798.080 219872.353 2.62% - 0s 0 0 219882.947 0 6 225798.080 219882.947 2.62% - 0s 0 0 219885.264 0 6 225798.080 219885.264 2.62% - 0s 0 0 219886.278 0 6 225798.080 219886.278 2.62% - 0s 0 0 219890.834 0 6 225798.080 219890.834 2.62% - 0s 0 0 219892.174 0 6 225798.080 219892.174 2.62% - 0s 0 0 219893.642 0 6 225798.080 219893.642 2.61% - 0s 0 0 219894.342 0 7 225798.080 219894.342 2.61% - 0s 0 0 219895.180 0 7 225798.080 219895.180 2.61% - 0s 0 0 219896.063 0 7 225798.080 219896.063 2.61% - 1s 0 0 219896.063 0 7 225798.080 219896.063 2.61% - 1s 0 0 219896.063 0 7 225798.080 219896.063 2.61% - 1s 0 2 219896.637 0 7 225798.080 219896.637 2.61% - 1s H 27 19 222605.97033 220306.336 1.03% 38.3 2s * 34 23 34 222551.70375 220306.336 1.01% 36.0 2s H 81 39 222467.28942 221056.143 0.63% 46.9 3s * 120 13 11 221983.10724 221591.680 0.18% 41.2 3s Cutting planes: Flow cover: 11 Explored 138 nodes (7798 simplex iterations) in 4.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.219831072369e+05, best bound 2.219831072369e+05, gap 0.0%