Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:04:57 2013 Optimize a model with 21712 rows, 21252 columns and 84732 nonzeros Presolve removed 46 rows and 0 columns Presolve time: 0.09s Presolved: 21666 rows, 21252 columns, 84686 nonzeros Variable types: 21206 continuous, 46 integer (46 binary) Root relaxation: objective 4.660511e+04, 3237 iterations, 1.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46605.1081 0 39 - 46605.1081 - - 1s H 0 0 61171.000000 46605.1081 23.8% - 1s 0 0 54594.1282 0 2 61171.0000 54594.1282 10.8% - 2s H 0 0 54785.103087 54594.1282 0.35% - 2s H 0 0 54678.000000 54594.1282 0.15% - 2s 0 0 54609.6914 0 2 54678.0000 54609.6914 0.12% - 2s H 0 0 54670.000000 54609.6914 0.11% - 2s H 0 0 54619.000000 54609.6914 0.02% - 2s 0 1 54613.6667 0 2 54619.0000 54613.6667 0.01% - 3s Cutting planes: Implied bound: 39 Explored 1 nodes (5019 simplex iterations) in 3.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.461900000000e+04, best bound 5.461366666667e+04, gap 0.0098%