Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:03:04 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 4.039196e+04, 2322 iterations, 0.41 seconds

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

     0     0 40391.9632    0   34          - 40391.9632     -      -    0s
H    0     0                    49264.000000 40391.9632  18.0%     -    0s
     0     0 44761.7991    0    9 49264.0000 44761.7991  9.14%     -    1s
H    0     0                    48784.286506 44761.7991  8.25%     -    1s
H    0     0                    48011.000000 44761.7991  6.77%     -    1s
     0     0 45002.1212    0    1 48011.0000 45002.1212  6.27%     -    1s
H    0     0                    45208.181818 45002.1212  0.46%     -    1s
H    0     0                    45165.000000 45002.1212  0.36%     -    1s
     0     2 45004.1009    0    1 45165.0000 45004.1009  0.36%     -    1s
H    4     3                    45134.909091 45076.3430  0.13%  45.5    2s
*    5     1               5    45096.000000 45076.3430  0.04%  54.8    2s

Cutting planes:
  Gomory: 1
  Implied bound: 34

Explored 7 nodes (4166 simplex iterations) in 2.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.509600000000e+04, best bound 4.509600000000e+04, gap 0.0%