Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:18:10 2012

Optimize a model with 61869 rows, 53130 columns and 237588 nonzeros
Presolve removed 2762 rows and 2 columns
Presolve time: 1.79s
Presolved: 59337 rows, 53128 columns, 283074 nonzeros
Variable types: 0 continuous, 53128 integer (53128 binary)
Found heuristic solution: objective 230.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29324    3.0000968e+00   9.000000e+01   0.000000e+00      5s
   34245    3.0001088e+00   2.652843e+02   0.000000e+00     10s
   37488    3.0001106e+00   2.584165e+02   0.000000e+00     15s
   40731    3.0001122e+00   4.502048e+02   0.000000e+00     20s
   43692    3.0001136e+00   1.144489e+02   0.000000e+00     25s
   46794    3.0001151e+00   4.018081e+02   0.000000e+00     30s
   49896    3.0001166e+00   6.099512e+01   0.000000e+00     35s
   52716    3.0001177e+00   6.785754e+01   0.000000e+00     40s
   53819    3.0000000e+00   0.000000e+00   0.000000e+00     42s

Root relaxation: objective 3.000000e+00, 53819 iterations, 42.08 seconds
Total elapsed time = 95.52s

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

*    0     0               0       3.0000000    3.00000   0.0%     -   98s

Explored 0 nodes (134733 simplex iterations) in 98.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%