Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:59 2013

Optimize a model with 33174 rows, 32604 columns and 130074 nonzeros
Presolve removed 57 rows and 0 columns
Presolve time: 0.14s
Presolved: 33117 rows, 32604 columns, 130017 nonzeros
Variable types: 32547 continuous, 57 integer (57 binary)

Root relaxation: objective 4.816418e+04, 4104 iterations, 1.29 seconds

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

     0     0 48164.1832    0   40          - 48164.1832     -      -    1s
H    0     0                    66269.000000 48164.1832  27.3%     -    2s
     0     0 58757.9877    0   12 66269.0000 58757.9877  11.3%     -    4s
H    0     0                    63596.000000 58757.9877  7.61%     -    4s
     0     0 59384.2942    0    6 63596.0000 59384.2942  6.62%     -    5s
H    0     0                    63316.000000 59384.2942  6.21%     -    5s
     0     0 59707.4387    0    4 63316.0000 59707.4387  5.70%     -    5s
H    0     0                    62141.795141 59707.4387  3.92%     -    5s
H    0     0                    61358.000000 59707.4387  2.69%     -    5s
H    0     0                    60057.000000 59707.4387  0.58%     -    6s
     0     0 59803.4643    0    3 60057.0000 59803.4643  0.42%     -    6s
     0     2 59819.2807    0    3 60057.0000 59819.2807  0.40%     -    6s
*   15     6              12    59982.000000 59877.2857  0.17%  86.7    7s
*   23     2               3    59973.000000 59943.3333  0.05%  80.5    7s

Cutting planes:
  Implied bound: 51

Explored 27 nodes (10976 simplex iterations) in 7.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.997300000000e+04, best bound 5.997300000000e+04, gap 0.0%