Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:10 2013

Optimize a model with 5104 rows, 4884 columns and 19404 nonzeros
Presolve removed 22 rows and 0 columns
Presolve time: 0.02s
Presolved: 5082 rows, 4884 columns, 19382 nonzeros
Variable types: 4862 continuous, 22 integer (22 binary)

Root relaxation: objective 2.091939e+04, 589 iterations, 0.03 seconds

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

     0     0 20919.3933    0   12          - 20919.3933     -      -    0s
H    0     0                    21741.000000 20919.3933  3.78%     -    0s
H    0     0                    21191.000000 20919.3933  1.28%     -    0s
     0     0 21190.0500    0    1 21191.0000 21190.0500  0.00%     -    0s

Cutting planes:
  Gomory: 7
  Implied bound: 11

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 2.119100000000e+04, best bound 2.119005000000e+04, gap 0.0045%