Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:40:02 2013

Optimize a model with 1952 rows, 61830 columns and 3356646 nonzeros
Presolve removed 48 rows and 149 columns (presolve time = 5s) ...
Presolve removed 61 rows and 747 columns (presolve time = 11s) ...
Presolve removed 61 rows and 747 columns
Presolve time: 13.35s
Presolved: 1891 rows, 61083 columns, 3309706 nonzeros
Variable types: 0 continuous, 61083 integer (61083 binary)
Found heuristic solution: objective 32000.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7803    2.3607260e+04   4.669208e+02   0.000000e+00      5s
   11178    2.3801855e+04   6.124904e+02   0.000000e+00     10s
   13338    2.3831106e+04   1.398393e+02   0.000000e+00     15s
   14281    2.3838500e+04   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 2.383850e+04, 14281 iterations, 17.92 seconds

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

     0     0 23838.5000    0   58 32000.0000 23838.5000  25.5%     -   33s
H    0     0                    25017.000000 23838.5000  4.71%     -   34s
H    0     0                    24831.000000 23838.5000  4.00%     -   37s
     0     0 23843.0000    0  102 24831.0000 23843.0000  3.98%     -   41s
*    0     0               0    23848.000000 23848.0000   0.0%     -   71s

Cutting planes:
  Clique: 6
  Zero half: 20

Explored 0 nodes (16703 simplex iterations) in 71.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.384800000000e+04, best bound 2.384800000000e+04, gap 0.0%