Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:25 2013 Optimize a model with 240 rows, 1280 columns and 3590 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 230 rows, 1270 columns, 3380 nonzeros Variable types: 1220 continuous, 50 integer (50 binary) Root relaxation: objective 1.836170e+04, 131 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18361.7044 0 3 - 18361.7044 - - 0s 0 0 18364.3652 0 3 - 18364.3652 - - 0s 0 0 18381.2294 0 3 - 18381.2294 - - 0s 0 0 18392.6912 0 12 - 18392.6912 - - 0s 0 0 18411.7710 0 3 - 18411.7710 - - 0s 0 0 18411.7710 0 3 - 18411.7710 - - 0s H 0 0 18429.134334 18411.7710 0.09% - 0s H 0 0 18418.150058 18411.7710 0.03% - 0s 0 1 18417.2952 0 2 18418.1501 18417.2952 0.00% - 0s Cutting planes: Flow cover: 1 Explored 1 nodes (375 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.841815005800e+04, best bound 1.841729516942e+04, gap 0.0046%