Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:02:42 2012

Optimize a model with 54648 rows, 44732 columns and 207622 nonzeros
Presolve removed 437 rows and 2745 columns
Presolve time: 3.79s
Presolved: 54211 rows, 41987 columns, 203310 nonzeros
Variable types: 0 continuous, 41987 integer (41987 binary)
Found heuristic solution: objective 211.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   33141    3.0000922e+00   9.871255e+02   0.000000e+00      5s
   37629    3.0000976e+00   4.535905e+01   0.000000e+00     10s
   41437    3.0001010e+00   9.075732e+00   0.000000e+00     15s
   45109    3.0001040e+00   5.923889e+01   0.000000e+00     20s
   48645    3.0001066e+00   1.594512e+01   0.000000e+00     25s
   51397    3.0000000e+00   0.000000e+00   0.000000e+00     28s

Root relaxation: objective 3.000000e+00, 51397 iterations, 27.72 seconds
Total elapsed time = 46.81s

    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%     -   50s

Explored 0 nodes (106169 simplex iterations) in 50.32 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%