Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:28:02 2013

Optimize a model with 638 rows, 33698 columns and 67338 nonzeros
Presolve time: 0.05s
Presolved: 638 rows, 33698 columns, 67338 nonzeros
Variable types: 33640 continuous, 58 integer (58 binary)

Root relaxation: objective 6.298508e+04, 1591 iterations, 0.04 seconds

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

     0     0 62985.0782    0    7          - 62985.0782     -      -    0s
H    0     0                    65115.000000 62985.0782  3.27%     -    0s
     0     0 63435.1137    0    2 65115.0000 63435.1137  2.58%     -    0s
     0     0 63445.4529    0    2 65115.0000 63445.4529  2.56%     -    0s
H    0     0                    64831.000000 63445.4529  2.14%     -    0s
     0     0 63455.0238    0    2 64831.0000 63455.0238  2.12%     -    0s
     0     0 63458.7035    0    2 64831.0000 63458.7035  2.12%     -    0s
H    0     0                    64518.000000 63458.7035  1.64%     -    0s
     0     0 63461.9403    0    2 64518.0000 63461.9403  1.64%     -    0s
H    0     0                    64509.000000 63461.9403  1.62%     -    0s
     0     0 63462.4144    0    2 64509.0000 63462.4144  1.62%     -    0s
     0     0 63462.4144    0    2 64509.0000 63462.4144  1.62%     -    0s
     0     0 63462.4144    0    2 64509.0000 63462.4144  1.62%     -    0s
     0     2 63467.3267    0    2 64509.0000 63467.3267  1.61%     -    0s
H    3     3                    63545.000000 63508.1520  0.06%  35.3    0s

Cutting planes:
  Implied bound: 69
  Flow cover: 4

Explored 6 nodes (2182 simplex iterations) in 0.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.354500000000e+04, best bound 6.354500000000e+04, gap 0.0%