Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:54:21 2013

Optimize a model with 43030 rows, 42380 columns and 169130 nonzeros
Presolve removed 65 rows and 0 columns
Presolve time: 0.19s
Presolved: 42965 rows, 42380 columns, 169065 nonzeros
Variable types: 42315 continuous, 65 integer (65 binary)

Root relaxation: objective 5.235137e+04, 4790 iterations, 2.02 seconds

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

     0     0 52351.3652    0   47          - 52351.3652     -      -    2s
H    0     0                    75341.000000 52351.3652  30.5%     -    3s
     0     0 61466.6180    0   11 75341.0000 61466.6180  18.4%     -    7s
H    0     0                    70012.258592 61466.6180  12.2%     -    7s
H    0     0                    67691.000000 61466.6180  9.20%     -    7s
     0     0 61791.8825    0    5 67691.0000 61791.8825  8.71%     -    8s
H    0     0                    66385.274067 61791.8825  6.92%     -    8s
H    0     0                    62554.000000 61791.8825  1.22%     -    8s
H    0     0                    62258.000000 61791.8825  0.75%     -    8s
     0     0 61793.5433    0    3 62258.0000 61793.5433  0.75%     -    8s
H    0     0                    62003.000000 61793.5433  0.34%     -    8s
     0     2 61795.0925    0    3 62003.0000 61795.0925  0.34%     -    9s
*   10     6               8    61976.000000 61901.4583  0.12%   101   10s

Cutting planes:
  Implied bound: 51

Explored 19 nodes (9769 simplex iterations) in 10.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.197600000000e+04, best bound 6.197600000000e+04, gap 0.0%