Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:55:11 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 5.227182e+04, 5317 iterations, 3.16 seconds

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

     0     0 52271.8207    0   52          - 52271.8207     -      -    3s
H    0     0                    76879.000000 52271.8207  32.0%     -    5s
     0     0 65821.1606    0   12 76879.0000 65821.1606  14.4%     -   10s
H    0     0                    74489.310708 65821.1606  11.6%     -   10s
H    0     0                    70867.000000 65821.1606  7.12%     -   10s
     0     0 66053.7469    0    4 70867.0000 66053.7469  6.79%     -   10s
     0     0 66151.3087    0    3 70867.0000 66151.3087  6.65%     -   11s
H    0     0                    68569.309930 66151.3087  3.53%     -   11s
H    0     0                    67855.000000 66151.3087  2.51%     -   11s
     0     2 66151.6938    0    3 67855.0000 66151.6938  2.51%     -   12s
H    3     3                    67465.000000 66220.1121  1.85%   112   12s
H    4     4                    67206.440860 66221.5000  1.47%   130   12s
H    9     8                    66794.000000 66223.0000  0.85%   121   13s
H   13     5                    66503.400000 66223.0000  0.42%   103   13s
H   16     4                    66410.000000 66223.0000  0.28%  95.6   13s
*   18     3              17    66405.000000 66223.0000  0.27%  90.2   13s

Cutting planes:
  Implied bound: 60

Explored 26 nodes (12565 simplex iterations) in 14.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.640500000000e+04, best bound 6.640500000000e+04, gap 0.0%