Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:21:06 2012

Optimize a model with 54281 rows, 47742 columns and 209496 nonzeros
Presolve removed 438 rows and 2 columns
Presolve time: 1.30s
Presolved: 54061 rows, 47740 columns, 255436 nonzeros
Variable types: 0 continuous, 47740 integer (47740 binary)
Found heuristic solution: objective 218.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34191    3.0001385e+00   4.752000e+01   0.000000e+00      5s
   41868    3.0001513e+00   7.403536e+01   0.000000e+00     10s
   46593    3.0001533e+00   4.817950e+01   0.000000e+00     15s
   49338    3.0000000e+00   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 3.000000e+00, 49338 iterations, 18.01 seconds
Total elapsed time = 44.53s
Total elapsed time = 45.31s

    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%     -   45s

Explored 0 nodes (102470 simplex iterations) in 45.88 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%