Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:44:46 2013

Optimize a model with 1516 rows, 37389 columns and 1941027 nonzeros
Presolve removed 9 rows and 6 columns (presolve time = 5s) ...
Presolve removed 23 rows and 55 columns (presolve time = 10s) ...
Presolve removed 28 rows and 90 columns
Presolve time: 12.65s
Presolved: 1488 rows, 37299 columns, 1935387 nonzeros
Variable types: 0 continuous, 37299 integer (37299 binary)
Found heuristic solution: objective 17868.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8052    1.3835490e+04   5.365934e+01   0.000000e+00      5s
    8358    1.3837000e+04   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 1.383700e+04, 8358 iterations, 5.71 seconds

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

*    0     0               0    13837.000000 13837.0000   0.0%     -   18s

Explored 0 nodes (8358 simplex iterations) in 18.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.383700000000e+04, best bound 1.383700000000e+04, gap 0.0%