Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:18:49 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 4.890007e+04, 4424 iterations, 1.82 seconds

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

     0     0 48900.0694    0   46          - 48900.0694     -      -    2s
H    0     0                    66903.000000 48900.0694  26.9%     -    2s
     0     0 58965.7648    0   12 66903.0000 58965.7648  11.9%     -    4s
H    0     0                    63445.000000 58965.7648  7.06%     -    4s
     0     0 59665.1775    0    3 63445.0000 59665.1775  5.96%     -    5s
H    0     0                    60823.796739 59665.1775  1.90%     -    5s
H    0     0                    60460.000000 59665.1775  1.31%     -    5s
H    0     0                    60158.000000 59665.1775  0.82%     -    5s
     0     2 59683.6977    0    3 60158.0000 59683.6977  0.79%     -    5s
*    6     4               5    59916.000000 59864.4782  0.09%   107    6s

Cutting planes:
  Gomory: 1
  Implied bound: 49

Explored 13 nodes (8011 simplex iterations) in 6.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.991600000000e+04, best bound 5.991600000000e+04, gap 0.0%