Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:02 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 1.865537e+04, 465 iterations, 0.02 seconds

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

     0     0 18655.3684    0   13          - 18655.3684     -      -    0s
H    0     0                    19606.000000 18655.3684  4.85%     -    0s
     0     0 19391.7619    0    1 19606.0000 19391.7619  1.09%     -    0s
H    0     0                    19482.238095 19391.7619  0.46%     -    0s
H    0     0                    19395.000000 19391.7619  0.02%     -    0s

Cutting planes:
  Gomory: 1
  Implied bound: 13

Explored 0 nodes (580 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.939500000000e+04, best bound 1.939500000000e+04, gap 0.0%