Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:37:38 2013

Optimize a model with 1955 rows, 61728 columns and 3352122 nonzeros
Presolve removed 30 rows and 111 columns (presolve time = 5s) ...
Presolve removed 33 rows and 144 columns (presolve time = 11s) ...
Presolve removed 33 rows and 144 columns
Presolve time: 12.00s
Presolved: 1922 rows, 61584 columns, 3343380 nonzeros
Variable types: 0 continuous, 61584 integer (61584 binary)
Found heuristic solution: objective 31696.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7624    2.3348017e+04   7.048718e+02   0.000000e+00      5s
   10912    2.3492312e+04   4.824728e+02   0.000000e+00     10s
   13515    2.3536797e+04   2.175892e+02   0.000000e+00     15s
   14633    2.3545000e+04   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 2.354500e+04, 14633 iterations, 18.11 seconds

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

*    0     0               0    23545.000000 23545.0000   0.0%     -   30s

Explored 0 nodes (14633 simplex iterations) in 30.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.354499999999e+04, best bound 2.354499999999e+04, gap 0.0%