Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:34:39 2013

Optimize a model with 2207 rows, 69810 columns and 4304411 nonzeros
Presolve removed 26 rows and 75 columns (presolve time = 5s) ...
Presolve removed 73 rows and 594 columns (presolve time = 10s) ...
Presolve removed 74 rows and 708 columns (presolve time = 15s) ...
Presolve removed 74 rows and 708 columns
Presolve time: 16.68s
Presolved: 2133 rows, 69102 columns, 4260506 nonzeros
Variable types: 0 continuous, 69102 integer (69102 binary)
Found heuristic solution: objective 37441.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7407    2.7404900e+04   1.842309e+03   0.000000e+00      5s
   11349    2.7990889e+04   8.010913e+02   0.000000e+00     10s
   14269    2.8124745e+04   2.671025e+03   0.000000e+00     15s
   16897    2.8186174e+04   2.116802e+03   0.000000e+00     20s
   19233    2.8206636e+04   7.654120e+02   0.000000e+00     25s
   20439    2.8214000e+04   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 2.821400e+04, 20439 iterations, 29.22 seconds

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

*    0     0               0    28214.000000 28214.0000   0.0%     -   46s

Explored 0 nodes (20439 simplex iterations) in 46.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.821399999999e+04, best bound 2.821399999999e+04, gap 0.0%