Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:26:09 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 4.822828e+04, 3596 iterations, 1.48 seconds

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

     0     0 48228.2822    0   50          - 48228.2822     -      -    1s
H    0     0                    66030.000000 48228.2822  27.0%     -    2s
     0     0 56997.6990    0   14 66030.0000 56997.6990  13.7%     -    4s
H    0     0                    60682.000000 56997.6990  6.07%     -    4s
     0     0 57586.3538    0    6 60682.0000 57586.3538  5.10%     -    5s
H    0     0                    58641.523773 57586.3538  1.80%     -    5s
H    0     0                    58196.000000 57586.3538  1.05%     -    5s
H    0     0                    57680.000000 57586.3538  0.16%     -    5s
     0     0 57617.5365    0    4 57680.0000 57617.5365  0.11%     -    5s
     0     0 57622.0829    0    3 57680.0000 57622.0829  0.10%     -    6s
     0     2 57623.5561    0    3 57680.0000 57623.5561  0.10%     -    6s
*    2     2               2    57637.000000 57637.0000   0.0%  28.5    6s

Cutting planes:
  Implied bound: 52

Explored 3 nodes (6295 simplex iterations) in 6.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.763700000000e+04, best bound 5.763700000000e+04, gap 0.0%