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

Optimize a model with 220 rows, 4020 columns and 8020 nonzeros
Presolve time: 0.00s
Presolved: 220 rows, 4020 columns, 8020 nonzeros
Variable types: 4000 continuous, 20 integer (20 binary)

Root relaxation: objective 2.113407e+04, 142 iterations, 0.00 seconds

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

     0     0 21134.0670    0    3          - 21134.0670     -      -    0s
H    0     0                    21281.000000 21134.0670  0.69%     -    0s
     0     0 21231.2152    0    1 21281.0000 21231.2152  0.23%     -    0s
     0     0 21234.5349    0    1 21281.0000 21234.5349  0.22%     -    0s
     0     0 21234.6825    0    1 21281.0000 21234.6825  0.22%     -    0s
     0     0 21234.8154    0    1 21281.0000 21234.8154  0.22%     -    0s
     0     0 21280.0000    0    1 21281.0000 21280.0000  0.00%     -    0s

Cutting planes:
  Implied bound: 19

Explored 0 nodes (198 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.128100000000e+04, best bound 2.128000000000e+04, gap 0.0047%