Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:08:27 2013

Optimize a model with 23616 rows, 23136 columns and 92256 nonzeros
Presolve removed 48 rows and 0 columns
Presolve time: 0.10s
Presolved: 23568 rows, 23136 columns, 92208 nonzeros
Variable types: 23088 continuous, 48 integer (48 binary)

Root relaxation: objective 4.476001e+04, 3258 iterations, 1.02 seconds

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

     0     0 44760.0105    0   39          - 44760.0105     -      -    1s
H    0     0                    60003.000000 44760.0105  25.4%     -    1s
     0     0 51975.1410    0    6 60003.0000 51975.1410  13.4%     -    3s
H    0     0                    55873.628371 51975.1410  6.98%     -    3s
H    0     0                    54357.000000 51975.1410  4.38%     -    3s
H    0     0                    53809.000000 51975.1410  3.41%     -    3s
     0     0 52467.3339    0    5 53809.0000 52467.3339  2.49%     -    3s
H    0     0                    53640.000000 52467.3339  2.19%     -    3s
     0     2 52467.9468    0    5 53640.0000 52467.9468  2.19%     -    4s
H    4     4                    52712.836735 52520.3737  0.37%  49.8    4s
*    5     5               5    52560.000000 52520.3737  0.08%  61.4    4s

Cutting planes:
  Implied bound: 41

Explored 13 nodes (6369 simplex iterations) in 4.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.256000000000e+04, best bound 5.256000000000e+04, gap 0.0%