Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:29:06 2012

Optimize a model with 50693 rows, 45582 columns and 196597 nonzeros
Presolve removed 1067 rows and 2 columns
Presolve time: 1.28s
Presolved: 49839 rows, 45580 columns, 238944 nonzeros
Variable types: 0 continuous, 45580 integer (45580 binary)
Found heuristic solution: objective 213.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32911    3.0000774e+00   1.771538e+02   0.000000e+00      5s
   41063    3.0000945e+00   6.451846e+02   0.000000e+00     10s
   45613    3.0000996e+00   7.881648e+01   0.000000e+00     15s
   49773    3.0001029e+00   3.800223e+01   0.000000e+00     20s
   51047    3.0000000e+00   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 3.000000e+00, 51047 iterations, 21.65 seconds
Total elapsed time = 45.54s

    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%     -   47s

Explored 0 nodes (103777 simplex iterations) in 47.48 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%