Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:52 2013

Optimize a model with 4240 rows, 4040 columns and 16040 nonzeros
Presolve removed 20 rows and 0 columns
Presolve time: 0.02s
Presolved: 4220 rows, 4040 columns, 16020 nonzeros
Variable types: 4020 continuous, 20 integer (20 binary)

Root relaxation: objective 2.057702e+04, 694 iterations, 0.04 seconds

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

     0     0 20577.0211    0   15          - 20577.0211     -      -    0s
H    0     0                    21716.000000 20577.0211  5.24%     -    0s
     0     0 21684.4839    0    1 21716.0000 21684.4839  0.15%     -    0s
H    0     0                    21692.000000 21684.4839  0.03%     -    0s
     0     0 21685.2000    0    1 21692.0000 21685.2000  0.03%     -    0s

Cutting planes:
  Implied bound: 13

Explored 0 nodes (860 simplex iterations) in 0.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.169200000000e+04, best bound 2.169200000000e+04, gap 0.0%