Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:34:30 2013

Optimize a model with 1653 rows, 37894 columns and 2353539 nonzeros
Presolve removed 119 rows and 1113 columns (presolve time = 5s) ...
Presolve removed 124 rows and 1239 columns
Presolve time: 7.66s
Presolved: 1529 rows, 36655 columns, 2259628 nonzeros
Variable types: 0 continuous, 36655 integer (36655 binary)
Found heuristic solution: objective 21011.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7990    1.5946153e+04   1.881925e+02   0.000000e+00      5s
    8845    1.5957000e+04   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 1.595700e+04, 8845 iterations, 6.34 seconds

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

*    0     0               0    15957.000000 15957.0000   0.0%     -   14s

Explored 0 nodes (8845 simplex iterations) in 14.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.595700000000e+04, best bound 1.595700000000e+04, gap 0.0%