Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:03:04 2013

Optimize a model with 1580 rows, 43781 columns and 2176245 nonzeros
Presolve removed 38 rows and 198 columns (presolve time = 5s) ...
Presolve removed 40 rows and 229 columns
Presolve time: 8.20s
Presolved: 1540 rows, 43552 columns, 2161474 nonzeros
Variable types: 0 continuous, 43552 integer (43552 binary)
Found heuristic solution: objective 21348.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8506    1.6277788e+04   4.618268e+02   0.000000e+00      5s
   11060    1.6344000e+04   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 1.634400e+04, 11060 iterations, 8.45 seconds

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

*    0     0               0    16344.000000 16344.0000   0.0%     -   16s

Explored 0 nodes (11060 simplex iterations) in 17.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.634400000000e+04, best bound 1.634400000000e+04, gap 0.0%