Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:18:24 2013

Optimize a model with 594 rows, 29214 columns and 58374 nonzeros
Presolve time: 0.04s
Presolved: 594 rows, 29214 columns, 58374 nonzeros
Variable types: 29160 continuous, 54 integer (54 binary)

Root relaxation: objective 5.426701e+04, 1013 iterations, 0.03 seconds

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

     0     0 54267.0111    0    5          - 54267.0111     -      -    0s
H    0     0                    55993.000000 54267.0111  3.08%     -    0s
     0     0 54432.1141    0    2 55993.0000 54432.1141  2.79%     -    0s
H    0     0                    55949.000000 54432.1141  2.71%     -    0s
     0     0 54450.1232    0    2 55949.0000 54450.1232  2.68%     -    0s
H    0     0                    55906.000000 54450.1232  2.60%     -    0s
     0     0 54450.4013    0    3 55906.0000 54450.4013  2.60%     -    0s
H    0     0                    55899.000000 54450.4013  2.59%     -    0s
     0     0 54452.5103    0    2 55899.0000 54452.5103  2.59%     -    0s
     0     0 54452.5103    0    2 55899.0000 54452.5103  2.59%     -    0s
H    0     0                    55836.000000 54452.5103  2.48%     -    0s
     0     2 54464.8963    0    2 55836.0000 54464.8963  2.46%     -    0s
H    1     1                    55633.288136 54464.8963  2.10%   0.0    0s
H    3     3                    54638.581081 54522.4853  0.21%  48.3    0s
*   12     6              11    54628.000000 54529.7143  0.18%  25.1    0s
*   15     0               7    54572.000000 54572.0000   0.0%  24.9    0s

Cutting planes:
  Implied bound: 45

Explored 16 nodes (1510 simplex iterations) in 0.65 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.457200000000e+04, best bound 5.457200000000e+04, gap 0.0%