Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:48 2013

Optimize a model with 3838 rows, 3648 columns and 14478 nonzeros
Presolve removed 19 rows and 0 columns
Presolve time: 0.01s
Presolved: 3819 rows, 3648 columns, 14459 nonzeros
Variable types: 3629 continuous, 19 integer (19 binary)

Root relaxation: objective 2.041365e+04, 524 iterations, 0.02 seconds

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

     0     0 20413.6498    0   14          - 20413.6498     -      -    0s
H    0     0                    21242.000000 20413.6498  3.90%     -    0s
     0     0 21153.0286    0    1 21242.0000 21153.0286  0.42%     -    0s
H    0     0                    21212.771429 21153.0286  0.28%     -    0s
H    0     0                    21166.000000 21153.0286  0.06%     -    0s

Cutting planes:
  Implied bound: 13

Explored 0 nodes (662 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.116600000000e+04, best bound 2.116600000000e+04, gap 0.0%