Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:53 2013

Optimize a model with 30913 rows, 3249 columns and 94221 nonzeros
Presolve removed 2059 rows and 1631 columns
Presolve time: 0.19s
Presolved: 28854 rows, 1618 columns, 88182 nonzeros
Variable types: 30 continuous, 1588 integer (1588 binary)
Found heuristic solution: objective 84327.000000

Root relaxation: objective 6.379884e+04, 12385 iterations, 0.92 seconds

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

     0     0 63798.8400    0    7 84327.0000 63798.8400  24.3%     -    1s
H    0     0                    63829.000000 63798.8400  0.05%     -    1s
H    0     0                    63812.000000 63798.8400  0.02%     -    1s
H    0     0                    63807.000000 63798.8400  0.01%     -    1s
     0     0 63798.8400    0   22 63807.0000 63798.8400  0.01%     -    1s
     0     0 63798.8400    0   11 63807.0000 63798.8400  0.01%     -    1s
     0     0 63798.8400    0   20 63807.0000 63798.8400  0.01%     -    1s
H    0     0                    63802.000000 63798.8400  0.00%     -    1s

Cutting planes:
  Cover: 5
  Implied bound: 3
  MIR: 6

Explored 0 nodes (12812 simplex iterations) in 1.58 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.380200000000e+04, best bound 6.379900000000e+04, gap 0.0047%