Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:46:09 2013

Optimize a model with 40446 rows, 39816 columns and 158886 nonzeros
Presolve removed 63 rows and 0 columns
Presolve time: 0.18s
Presolved: 40383 rows, 39816 columns, 158823 nonzeros
Variable types: 39753 continuous, 63 integer (63 binary)

Root relaxation: objective 5.132085e+04, 5039 iterations, 2.36 seconds

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

     0     0 51320.8471    0   49          - 51320.8471     -      -    2s
H    0     0                    80416.000000 51320.8471  36.2%     -    4s
     0     0 62773.7050    0   14 80416.0000 62773.7050  21.9%     -    8s
H    0     0                    76126.624523 62773.7050  17.5%     -    8s
H    0     0                    71518.000000 62773.7050  12.2%     -    9s
     0     0 66164.0626    0    4 71518.0000 66164.0626  7.49%     -   10s
H    0     0                    70969.720043 66164.0626  6.77%     -   10s
H    0     0                    70125.000000 66164.0626  5.65%     -   10s
     0     0 66450.2652    0    6 70125.0000 66450.2652  5.24%     -   10s
H    0     0                    70002.837518 66450.2652  5.07%     -   10s
H    0     0                    69195.000000 66450.2652  3.97%     -   10s
     0     0 66452.2981    0    3 69195.0000 66452.2981  3.96%     -   10s
H    0     0                    67575.910835 66452.2981  1.66%     -   10s
H    0     0                    67175.000000 66452.2981  1.08%     -   10s
H    0     0                    66518.000000 66452.2981  0.10%     -   11s
     0     1 66511.6957    0    1 66518.0000 66511.6957  0.01%     -   11s

Cutting planes:
  Implied bound: 60

Explored 1 nodes (10994 simplex iterations) in 11.54 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.651800000000e+04, best bound 6.651169565217e+04, gap 0.0095%