Gurobi 5.0.1 (linux64) logging started Wed Dec 19 18:31:48 2012

Optimize a model with 3842 rows, 3721 columns and 22256 nonzeros
Presolve removed 2190 rows and 2378 columns
Presolve time: 0.09s
Presolved: 1652 rows, 1343 columns, 14283 nonzeros
Variable types: 58 continuous, 1285 integer (1285 binary)

Root relaxation: objective 5.840367e+02, 284 iterations, 0.01 seconds

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

     0     0  584.03674    0   76          -  584.03674     -      -    0s
     0     0  596.32311    0   46          -  596.32311     -      -    0s
     0     0  600.89062    0   48          -  600.89062     -      -    0s
     0     0  601.05973    0   57          -  601.05973     -      -    0s
     0     0  601.26806    0   57          -  601.26806     -      -    0s
     0     0  602.83333    0   41          -  602.83333     -      -    0s
     0     0  602.83333    0   41          -  602.83333     -      -    0s
H    0     0                     607.0000000  602.83333  0.69%     -    0s
     0     0  604.00000    0    6  607.00000  604.00000  0.49%     -    0s
H    0     0                     606.0000000  604.00000  0.33%     -    0s
H    0     0                     605.0000000  604.00000  0.17%     -    0s

Cutting planes:
  Implied bound: 2
  Clique: 8
  MIR: 5

Explored 0 nodes (622 simplex iterations) in 0.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.050000000000e+02, best bound 6.050000000000e+02, gap 0.0%