Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:38 2013

Optimize a model with 22654 rows, 22184 columns and 88454 nonzeros
Presolve removed 47 rows and 0 columns
Presolve time: 0.10s
Presolved: 22607 rows, 22184 columns, 88407 nonzeros
Variable types: 22137 continuous, 47 integer (47 binary)

Root relaxation: objective 4.431941e+04, 3616 iterations, 1.35 seconds

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

     0     0 44319.4080    0   43          - 44319.4080     -      -    1s
H    0     0                    58582.000000 44319.4080  24.3%     -    2s
     0     0 53887.3046    0    4 58582.0000 53887.3046  8.01%     -    3s
H    0     0                    55116.605272 53887.3046  2.23%     -    3s
H    0     0                    54687.000000 53887.3046  1.46%     -    3s
H    0     0                    54423.000000 53887.3046  0.98%     -    3s
     0     0 54231.2128    0    2 54423.0000 54231.2128  0.35%     -    3s
     0     0 54259.1738    0    4 54423.0000 54259.1738  0.30%     -    3s
     0     0 54259.8078    0    4 54423.0000 54259.8078  0.30%     -    3s
     0     0 54264.3594    0    1 54423.0000 54264.3594  0.29%     -    3s
     0     2 54269.6429    0    1 54423.0000 54269.6429  0.28%     -    4s

Cutting planes:
  Implied bound: 44

Explored 3 nodes (5963 simplex iterations) in 4.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.442300000000e+04, best bound 5.442300000000e+04, gap 0.0%