Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:30:52 2013

Optimize a model with 649 rows, 34869 columns and 69679 nonzeros
Presolve time: 0.05s
Presolved: 649 rows, 34869 columns, 69679 nonzeros
Variable types: 34810 continuous, 59 integer (59 binary)

Root relaxation: objective 6.303808e+04, 1406 iterations, 0.04 seconds

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

     0     0 63038.0826    0    5          - 63038.0826     -      -    0s
H    0     0                    64573.000000 63038.0826  2.38%     -    0s
     0     0 63136.3148    0    2 64573.0000 63136.3148  2.22%     -    0s
H    0     0                    64404.000000 63136.3148  1.97%     -    0s
     0     0 63146.9904    0    3 64404.0000 63146.9904  1.95%     -    0s
     0     0 63150.5931    0    2 64404.0000 63150.5931  1.95%     -    0s
H    0     0                    64324.000000 63150.5931  1.82%     -    0s
     0     0 63150.5931    0    2 64324.0000 63150.5931  1.82%     -    0s
     0     0 63151.0608    0    2 64324.0000 63151.0608  1.82%     -    0s
     0     2 63159.0968    0    2 64324.0000 63159.0968  1.81%     -    0s
H    2     2                    63434.000000 63204.5589  0.36%  26.0    0s
H    5     4                    63424.000000 63278.0067  0.23%  28.4    0s
H    6     4                    63348.000000 63278.0067  0.11%  25.5    0s
*    8     4               7    63344.000000 63278.0067  0.10%  24.0    0s
*   12     3               7    63341.000000 63305.6000  0.06%  29.2    0s

Cutting planes:
  Implied bound: 71
  Flow cover: 3

Explored 18 nodes (1912 simplex iterations) in 0.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.334100000000e+04, best bound 6.334100000000e+04, gap 0.0%