Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:11:57 2012

Optimize a model with 54807 rows, 49062 columns and 212379 nonzeros
Presolve removed 886 rows and 2 columns
Presolve time: 1.40s
Presolved: 54142 rows, 49060 columns, 258522 nonzeros
Variable types: 0 continuous, 49060 integer (49060 binary)
Found heuristic solution: objective 221.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29696    3.0000860e+00   1.804167e+01   0.000000e+00      5s
   34435    3.0000888e+00   5.126201e+01   0.000000e+00     10s
   38215    3.0000927e+00   1.584328e+02   0.000000e+00     15s
   41995    3.0000964e+00   2.961111e+01   0.000000e+00     20s
   43315    3.0000000e+00   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 3.000000e+00, 43315 iterations, 21.65 seconds
Total elapsed time = 45.30s

    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%     -   49s

Explored 0 nodes (109356 simplex iterations) in 49.04 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%