Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:03:57 2012

Optimize a model with 1682 rows, 1681 columns and 7456 nonzeros
Presolve removed 1469 rows and 1072 columns
Presolve time: 0.02s
Presolved: 213 rows, 609 columns, 2368 nonzeros
Variable types: 34 continuous, 575 integer (575 binary)

Root relaxation: objective 4.802462e+02, 148 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0  480.24616    0   20          -  480.24616     -      -    0s
     0     0  499.00000    0   10          -  499.00000     -      -    0s
H    0     0                     499.0000000  499.00000   0.0%     -    0s

Cutting planes:
  Learned: 1
  Clique: 1
  Mod-K: 1

Explored 0 nodes (195 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.990000000000e+02, best bound 4.990000000000e+02, gap 0.0%