Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:19:15 2013

Optimize a model with 29808 rows, 29268 columns and 116748 nonzeros
Presolve removed 54 rows and 0 columns
Presolve time: 0.13s
Presolved: 29754 rows, 29268 columns, 116694 nonzeros
Variable types: 29214 continuous, 54 integer (54 binary)

Root relaxation: objective 4.391050e+04, 2824 iterations, 0.84 seconds

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

     0     0 43910.5000    0   44          - 43910.5000     -      -    1s
H    0     0                    55399.000000 43910.5000  20.7%     -    1s
     0     0 48574.2187    0   14 55399.0000 48574.2187  12.3%     -    3s
H    0     0                    53481.000000 48574.2187  9.17%     -    3s
H    0     0                    53423.000000 48574.2187  9.08%     -    3s
     0     0 49009.0317    0    7 53423.0000 49009.0317  8.26%     -    4s
H    0     0                    52421.055304 49009.0317  6.51%     -    4s
H    0     0                    51051.000000 49009.0317  4.00%     -    4s
H    0     0                    49352.000000 49009.0317  0.69%     -    4s
     0     0 49014.7670    0    8 49352.0000 49014.7670  0.68%     -    4s
     0     0 49016.9781    0    7 49352.0000 49016.9781  0.68%     -    4s
     0     2 49023.1976    0    7 49352.0000 49023.1976  0.67%     -    5s
*    7     4               7    49151.000000 49128.0051  0.05%  61.6    5s

Cutting planes:
  Implied bound: 50

Explored 11 nodes (5663 simplex iterations) in 5.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.915100000000e+04, best bound 4.915100000000e+04, gap 0.0%