Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:15 2013 Optimize a model with 253 rows, 5313 columns and 10603 nonzeros Presolve time: 0.01s Presolved: 253 rows, 5313 columns, 10603 nonzeros Variable types: 5290 continuous, 23 integer (23 binary) Root relaxation: objective 2.524336e+04, 290 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 25243.3619 0 2 - 25243.3619 - - 0s H 0 0 25513.000000 25243.3619 1.06% - 0s 0 0 25465.6651 0 2 25513.0000 25465.6651 0.19% - 0s 0 0 25493.7059 0 1 25513.0000 25493.7059 0.08% - 0s 0 0 25495.1111 0 1 25513.0000 25495.1111 0.07% - 0s 0 0 25495.1111 0 2 25513.0000 25495.1111 0.07% - 0s 0 0 25495.1111 0 2 25513.0000 25495.1111 0.07% - 0s 0 0 25495.1111 0 1 25513.0000 25495.1111 0.07% - 0s 0 0 25495.1111 0 1 25513.0000 25495.1111 0.07% - 0s 0 0 25511.2645 0 1 25513.0000 25511.2645 0.01% - 0s Cutting planes: Implied bound: 13 Flow cover: 1 Explored 0 nodes (488 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.551300000000e+04, best bound 2.551126446281e+04, gap 0.0068%