Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:27 2013

Optimize a model with 2430 rows, 2280 columns and 9030 nonzeros
Presolve removed 15 rows and 0 columns
Presolve time: 0.01s
Presolved: 2415 rows, 2280 columns, 9015 nonzeros
Variable types: 2265 continuous, 15 integer (15 binary)

Root relaxation: objective 1.844794e+04, 405 iterations, 0.01 seconds

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

     0     0 18447.9368    0   10          - 18447.9368     -      -    0s
H    0     0                    19079.000000 18447.9368  3.31%     -    0s
*    0     0               0    18999.000000 18999.0000   0.0%     -    0s

Cutting planes:
  Gomory: 8
  Implied bound: 10

Explored 0 nodes (488 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.899900000000e+04, best bound 1.899900000000e+04, gap 0.0%