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 2.347554e+04, 199 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23475.5447 0 3 - 23475.5447 - - 0s H 0 0 23911.000000 23475.5447 1.82% - 0s 0 0 23626.3625 0 2 23911.0000 23626.3625 1.19% - 0s H 0 0 23870.000000 23626.3625 1.02% - 0s H 0 0 23628.000000 23626.3625 0.01% - 0s Cutting planes: Implied bound: 11 Flow cover: 1 Explored 0 nodes (230 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.362800000000e+04, best bound 2.362636252772e+04, gap 0.0069%