Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:38 2013

Optimize a model with 14896 rows, 14516 columns and 57836 nonzeros
Presolve removed 38 rows and 0 columns
Presolve time: 0.06s
Presolved: 14858 rows, 14516 columns, 57798 nonzeros
Variable types: 14478 continuous, 38 integer (38 binary)

Root relaxation: objective 3.921495e+04, 2255 iterations, 0.41 seconds

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

     0     0 39214.9454    0   34          - 39214.9454     -      -    0s
H    0     0                    46666.000000 39214.9454  16.0%     -    0s
     0     0 42674.9005    0    3 46666.0000 42674.9005  8.55%     -    1s
H    0     0                    43521.890139 42674.9005  1.95%     -    1s
H    0     0                    43117.000000 42674.9005  1.03%     -    1s
     0     0 42730.7428    0    4 43117.0000 42730.7428  0.90%     -    1s
H    0     0                    43012.000000 42730.7428  0.65%     -    1s
     0     2 42735.1721    0    4 43012.0000 42735.1721  0.64%     -    1s
*    3     3               2    42816.000000 42814.0105  0.00%  89.7    1s

Cutting planes:
  Implied bound: 31

Explored 4 nodes (3495 simplex iterations) in 1.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.281600000000e+04, best bound 4.281401053741e+04, gap 0.0046%