Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:01:23 2013

Optimize a model with 1960 rows, 54428 columns and 3359837 nonzeros
Presolve removed 41 rows and 202 columns (presolve time = 5s) ...
Presolve removed 81 rows and 898 columns (presolve time = 11s) ...
Presolve removed 81 rows and 898 columns
Presolve time: 11.77s
Presolved: 1879 rows, 53530 columns, 3303289 nonzeros
Variable types: 0 continuous, 53530 integer (53530 binary)
Found heuristic solution: objective 29414.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7685    2.1942349e+04   2.361301e+03   0.000000e+00      5s
   11195    2.2137840e+04   1.689415e+03   0.000000e+00     10s
   13895    2.2186000e+04   1.335085e+03   0.000000e+00     15s
   15089    2.2198000e+04   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 2.219800e+04, 15089 iterations, 17.76 seconds

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

*    0     0               0    22198.000000 22198.0000   0.0%     -   30s

Explored 0 nodes (15089 simplex iterations) in 30.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.219800000000e+04, best bound 2.219800000000e+04, gap 0.0%