Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:14:24 2012

Optimize a model with 54281 rows, 47742 columns and 209496 nonzeros
Presolve removed 461 rows and 5016 columns
Presolve time: 1.39s
Presolved: 53820 rows, 42726 columns, 202898 nonzeros
Variable types: 0 continuous, 42726 integer (42726 binary)
Found heuristic solution: objective 218.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   33699    3.0001436e+00   9.620000e+01   0.000000e+00      5s
   43045    3.0001639e+00   1.581685e+01   0.000000e+00     10s
   47500    3.0001662e+00   2.789621e+01   0.000000e+00     15s
   51955    3.0001680e+00   3.693010e+00   0.000000e+00     20s
   56089    3.0000000e+00   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 3.000000e+00, 56089 iterations, 24.74 seconds
Total elapsed time = 53.08s
Total elapsed time = 55.05s

    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 (116105 simplex iterations) in 56.86 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%