Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:31 2013

Optimize a model with 19888 rows, 19448 columns and 77528 nonzeros
Presolve removed 44 rows and 0 columns
Presolve time: 0.08s
Presolved: 19844 rows, 19448 columns, 77484 nonzeros
Variable types: 19404 continuous, 44 integer (44 binary)

Root relaxation: objective 3.936320e+04, 2654 iterations, 0.41 seconds

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

     0     0 39363.1976    0   33          - 39363.1976     -      -    0s
H    0     0                    50396.000000 39363.1976  21.9%     -    0s
     0     0 44068.4639    0    7 50396.0000 44068.4639  12.6%     -    1s
H    0     0                    48788.866995 44068.4639  9.68%     -    1s
H    0     0                    46950.000000 44068.4639  6.14%     -    1s
     0     0 44504.0474    0    6 46950.0000 44504.0474  5.21%     -    1s
H    0     0                    46705.678562 44504.0474  4.71%     -    1s
H    0     0                    46000.000000 44504.0474  3.25%     -    1s
     0     0 44583.0401    0    3 46000.0000 44583.0401  3.08%     -    2s
H    0     0                    45809.000000 44583.0401  2.68%     -    2s
H    0     0                    45085.000000 44583.0401  1.11%     -    2s
     0     2 44585.6929    0    3 45085.0000 44585.6929  1.11%     -    2s
*    7     4               7    44668.000000 44662.4622  0.01%  46.6    2s

Cutting planes:
  Implied bound: 38

Explored 12 nodes (5276 simplex iterations) in 2.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.466800000000e+04, best bound 4.466800000000e+04, gap 0.0%