Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:11:46 2013

Optimize a model with 25600 rows, 25100 columns and 100100 nonzeros
Presolve removed 50 rows and 0 columns
Presolve time: 0.11s
Presolved: 25550 rows, 25100 columns, 100050 nonzeros
Variable types: 25050 continuous, 50 integer (50 binary)

Root relaxation: objective 4.431368e+04, 2905 iterations, 1.01 seconds

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

     0     0 44313.6774    0   43          - 44313.6774     -      -    1s
H    0     0                    59412.000000 44313.6774  25.4%     -    1s
     0     0 50787.1549    0    8 59412.0000 50787.1549  14.5%     -    3s
H    0     0                    57972.005807 50787.1549  12.4%     -    3s
H    0     0                    55231.000000 50787.1549  8.05%     -    3s
     0     0 52075.7675    0    7 55231.0000 52075.7675  5.71%     -    4s
H    0     0                    54629.000000 52075.7675  4.67%     -    4s
     0     0 52314.8063    0    5 54629.0000 52314.8063  4.24%     -    4s
H    0     0                    54348.701252 52314.8063  3.74%     -    4s
H    0     0                    52985.000000 52314.8063  1.26%     -    4s
     0     2 52315.8855    0    5 52985.0000 52315.8855  1.26%     -    4s
     2     4 52431.2549    2    1 52985.0000 52396.3221  1.11%   110    5s
H   12    10                    52619.250000 52396.3221  0.42%  33.6    5s
H   22    11                    52596.743802 52431.4906  0.31%  45.9    5s
*   23    10               6    52572.000000 52431.4906  0.27%  45.8    5s
*   32     2              14    52530.000000 52464.9189  0.12%  50.2    5s

Cutting planes:
  Implied bound: 48

Explored 35 nodes (7857 simplex iterations) in 5.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.253000000000e+04, best bound 5.253000000000e+04, gap 0.0%