Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:05:05 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 4.403212e+04, 3034 iterations, 0.73 seconds

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

     0     0 44032.1242    0   36          - 44032.1242     -      -    0s
H    0     0                    53835.000000 44032.1242  18.2%     -    1s
     0     0 49164.4436    0   10 53835.0000 49164.4436  8.68%     -    1s
H    0     0                    53110.173839 49164.4436  7.43%     -    1s
H    0     0                    50246.000000 49164.4436  2.15%     -    1s
H    0     0                    49322.000000 49164.4436  0.32%     -    2s
     0     0 49177.4011    0    5 49322.0000 49177.4011  0.29%     -    2s
     0     0 49196.7053    0    3 49322.0000 49196.7053  0.25%     -    2s
     0     2 49197.4779    0    3 49322.0000 49197.4779  0.25%     -    2s
*   22     3               6    49291.000000 49283.0000  0.02%  86.8    3s
*   25     0               5    49283.000000 49283.0000   0.0%  84.6    3s

Cutting planes:
  Implied bound: 36

Explored 26 nodes (6417 simplex iterations) in 3.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.928300000000e+04, best bound 4.928300000000e+04, gap 0.0%