Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:27 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 4.424825e+04, 3966 iterations, 1.49 seconds

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

     0     0 44248.2542    0   44          - 44248.2542     -      -    1s
H    0     0                    57620.000000 44248.2542  23.2%     -    2s
     0     0 52496.7251    0    5 57620.0000 52496.7251  8.89%     -    3s
H    0     0                    54300.143400 52496.7251  3.32%     -    3s
H    0     0                    53268.000000 52496.7251  1.45%     -    3s
H    0     0                    52634.000000 52496.7251  0.26%     -    3s
     0     0 52504.7288    0    4 52634.0000 52504.7288  0.25%     -    3s
     0     2 52504.8872    0    4 52634.0000 52504.8872  0.25%     -    4s

Cutting planes:
  Gomory: 1
  Implied bound: 45

Explored 3 nodes (6067 simplex iterations) in 4.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.263400000000e+04, best bound 5.263400000000e+04, gap 0.0%