Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:42:47 2013

Optimize a model with 39184 rows, 38564 columns and 153884 nonzeros
Presolve removed 62 rows and 0 columns
Presolve time: 0.17s
Presolved: 39122 rows, 38564 columns, 153822 nonzeros
Variable types: 38502 continuous, 62 integer (62 binary)

Root relaxation: objective 5.466583e+04, 5750 iterations, 3.34 seconds

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

     0     0 54665.8347    0   50          - 54665.8347     -      -    3s
H    0     0                    77715.000000 54665.8347  29.7%     -    4s
     0     0 69240.2609    0   13 77715.0000 69240.2609  10.9%     -    7s
H    0     0                    75517.000000 69240.2609  8.31%     -    7s
     0     0 70280.4583    0    4 75517.0000 70280.4583  6.93%     -    8s
H    0     0                    73049.741646 70280.4583  3.79%     -    8s
H    0     0                    71585.000000 70280.4583  1.82%     -    8s
H    0     0                    70633.000000 70280.4583  0.50%     -    9s
     0     2 70281.1205    0    4 70633.0000 70281.1205  0.50%     -    9s
     1     2 70317.0482    1    5 70633.0000 70317.0482  0.45%   306   10s
H    5     3                    70563.169811 70334.7795  0.32%   234   10s
*    6     4               5    70471.000000 70334.7795  0.19%   258   10s
H   15     1                    70381.423729 70359.8857  0.03%   138   11s
*   16     1               4    70360.000000 70360.0000   0.0%   131   11s

Cutting planes:
  Implied bound: 54

Explored 17 nodes (11763 simplex iterations) in 11.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.036000000000e+04, best bound 7.036000000000e+04, gap 0.0%