Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:00 2013

Optimize a model with 4662 rows, 4452 columns and 17682 nonzeros
Presolve removed 21 rows and 0 columns
Presolve time: 0.02s
Presolved: 4641 rows, 4452 columns, 17661 nonzeros
Variable types: 4431 continuous, 21 integer (21 binary)

Root relaxation: objective 1.880863e+04, 580 iterations, 0.02 seconds

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

     0     0 18808.6328    0   14          - 18808.6328     -      -    0s
H    0     0                    19964.000000 18808.6328  5.79%     -    0s
     0     0 19824.8571    0    1 19964.0000 19824.8571  0.70%     -    0s
H    0     0                    19896.857143 19824.8571  0.36%     -    0s
H    0     0                    19832.000000 19824.8571  0.04%     -    0s
*    0     0               0    19826.000000 19826.0000   0.0%     -    0s

Cutting planes:
  Implied bound: 10

Explored 0 nodes (682 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.982600000000e+04, best bound 1.982600000000e+04, gap 0.0%