Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:26:42 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 5.009604e+04, 5159 iterations, 2.44 seconds

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

     0     0 50096.0397    0   46          - 50096.0397     -      -    2s
H    0     0                    75047.000000 50096.0397  33.2%     -    4s
     0     0 62575.6605    0    9 75047.0000 62575.6605  16.6%     -    6s
H    0     0                    69809.899809 62575.6605  10.4%     -    6s
H    0     0                    65902.000000 62575.6605  5.05%     -    6s
     0     0 63057.6166    0    4 65902.0000 63057.6166  4.32%     -    7s
H    0     0                    65462.978905 63057.6166  3.67%     -    7s
H    0     0                    64492.000000 63057.6166  2.22%     -    7s
H    0     0                    64044.000000 63057.6166  1.54%     -    7s
     0     2 63058.6496    0    4 64044.0000 63058.6496  1.54%     -    7s
H    3     3                    63166.000000 63100.3746  0.10%  99.3    8s
*    5     2               4    63109.000000 63107.4223  0.00%  92.8    8s

Cutting planes:
  Implied bound: 48

Explored 6 nodes (9669 simplex iterations) in 8.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.310900000000e+04, best bound 6.310742225766e+04, gap 0.0025%