Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:50 2013

Optimize a model with 4220 rows, 4020 columns and 16020 nonzeros
Presolve removed 113 rows and 0 columns
Presolve time: 0.02s
Presolved: 4107 rows, 4020 columns, 15794 nonzeros
Variable types: 4000 continuous, 20 integer (20 binary)

Root relaxation: objective 2.151100e+04, 489 iterations, 0.01 seconds

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

*    0     0               0    21511.000000 21511.0000   0.0%     -    0s

Explored 0 nodes (489 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.151100000000e+04, best bound 2.151100000000e+04, gap 0.0%