Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:01:53 2013

Optimize a model with 1894 rows, 63534 columns and 3146184 nonzeros
Presolve removed 25 rows and 163 columns (presolve time = 5s) ...
Presolve removed 39 rows and 400 columns (presolve time = 10s) ...
Presolve removed 39 rows and 401 columns
Presolve time: 13.71s
Presolved: 1855 rows, 63133 columns, 3122096 nonzeros
Variable types: 0 continuous, 63133 integer (63133 binary)
Found heuristic solution: objective 33831.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7933    2.1638247e+04   1.082521e+03   0.000000e+00      5s
   11283    2.1880006e+04   4.642508e+02   0.000000e+00     10s
   14231    2.1954487e+04   1.417594e+03   0.000000e+00     15s
   15581    2.1968000e+04   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 2.196800e+04, 15581 iterations, 18.70 seconds

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

*    0     0               0    21968.000000 21968.0000   0.0%     -   32s

Explored 0 nodes (15581 simplex iterations) in 32.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.196800000000e+04, best bound 2.196800000000e+04, gap 0.0%