Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:31:18 2012

Optimize a model with 47631 rows, 43472 columns and 185326 nonzeros
Presolve removed 443 rows and 5202 columns
Presolve time: 1.19s
Presolved: 47188 rows, 38270 columns, 178632 nonzeros
Variable types: 0 continuous, 38270 integer (38270 binary)
Found heuristic solution: objective 208.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   30491    3.0000816e+00   6.050000e+01   0.000000e+00      5s
   36841    3.0000933e+00   4.637051e+01   0.000000e+00     10s
   41921    3.0000981e+00   1.455910e+02   0.000000e+00     15s
   46357    3.0000000e+00   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 3.000000e+00, 46357 iterations, 19.73 seconds
Total elapsed time = 46.66s
Total elapsed time = 54.30s
Total elapsed time = 55.77s

    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%     -   56s

Explored 0 nodes (105511 simplex iterations) in 56.05 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%