Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:35:10 2013

Optimize a model with 36720 rows, 36120 columns and 144120 nonzeros
Presolve removed 60 rows and 0 columns
Presolve time: 0.16s
Presolved: 36660 rows, 36120 columns, 144060 nonzeros
Variable types: 36060 continuous, 60 integer (60 binary)

Root relaxation: objective 5.255386e+04, 4935 iterations, 2.41 seconds

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

     0     0 52553.8618    0   49          - 52553.8618     -      -    2s
H    0     0                    75124.000000 52553.8618  30.0%     -    4s
     0     0 64386.4166    0   15 75124.0000 64386.4166  14.3%     -    7s
H    0     0                    71607.000000 64386.4166  10.1%     -    7s
     0     0 65362.7338    0    7 71607.0000 65362.7338  8.72%     -    8s
H    0     0                    70479.791583 65362.7338  7.26%     -    8s
H    0     0                    69448.000000 65362.7338  5.88%     -    8s
     0     0 65607.3462    0    6 69448.0000 65607.3462  5.53%     -    8s
H    0     0                    68031.000000 65607.3462  3.56%     -    8s
H    0     0                    65978.000000 65607.3462  0.56%     -    9s
     0     2 65638.6117    0    6 65978.0000 65638.6117  0.51%     -    9s
     7     8 65810.7135    5    2 65978.0000 65772.9127  0.31%   182   10s
*    8     5               6    65870.000000 65772.9127  0.15%   178   10s
*   16     3               8    65869.000000 65775.5225  0.14%   141   10s
*   21     2               6    65845.000000 65845.0000   0.0%   115   10s

Cutting planes:
  Implied bound: 57

Explored 22 nodes (11774 simplex iterations) in 10.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.584500000000e+04, best bound 6.584500000000e+04, gap 0.0%