Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:05:14 2013

Optimize a model with 21712 rows, 21252 columns and 84732 nonzeros
Presolve removed 46 rows and 0 columns
Presolve time: 0.09s
Presolved: 21666 rows, 21252 columns, 84686 nonzeros
Variable types: 21206 continuous, 46 integer (46 binary)

Root relaxation: objective 4.044560e+04, 2940 iterations, 0.63 seconds

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

     0     0 40445.6005    0   34          - 40445.6005     -      -    0s
H    0     0                    49464.000000 40445.6005  18.2%     -    1s
     0     0 45588.8476    0    7 49464.0000 45588.8476  7.83%     -    2s
H    0     0                    46975.932717 45588.8476  2.95%     -    2s
H    0     0                    46086.000000 45588.8476  1.08%     -    2s
H    0     0                    45774.000000 45588.8476  0.40%     -    2s
     0     0 45593.7856    0    4 45774.0000 45593.7856  0.39%     -    2s
     0     2 45594.9964    0    4 45774.0000 45594.9964  0.39%     -    2s
H    4     3                    45721.688468 45643.4114  0.17%   110    3s
H    5     4                    45703.783133 45672.9880  0.07%  96.4    3s
*    7     3               5    45677.000000 45675.3913  0.00%  74.1    3s

Cutting planes:
  Implied bound: 35

Explored 8 nodes (5011 simplex iterations) in 3.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.567700000000e+04, best bound 4.567539130435e+04, gap 0.0035%