Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:23:21 2013

Optimize a model with 1548 rows, 45863 columns and 2066859 nonzeros
Presolve removed 7 rows and 5 columns
Presolve time: 3.14s
Presolved: 1541 rows, 45858 columns, 2066809 nonzeros
Variable types: 0 continuous, 45858 integer (45858 binary)
Found heuristic solution: objective 23240.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9357    1.5579143e+04   2.243237e+03   0.000000e+00      5s
   12927    1.5660000e+04   1.000000e+00   0.000000e+00     10s
   13084    1.5660000e+04   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 1.566000e+04, 13084 iterations, 10.46 seconds

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

*    0     0               0    15660.000000 15660.0000   0.0%     -   13s

Explored 0 nodes (13084 simplex iterations) in 14.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.566000000000e+04, best bound 1.566000000000e+04, gap 0.0%