Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:15:10 2012

Optimize a model with 48547 rows, 45156 columns and 189738 nonzeros
Presolve removed 451 rows and 5302 columns
Presolve time: 1.13s
Presolved: 48096 rows, 39854 columns, 182924 nonzeros
Variable types: 0 continuous, 39854 integer (39854 binary)
Found heuristic solution: objective 212.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28709    3.0000834e+00   3.100000e+01   0.000000e+00      5s
   33189    3.0000881e+00   1.350953e+01   0.000000e+00     10s
   37533    3.0000000e+00   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 3.000000e+00, 37533 iterations, 14.73 seconds
Total elapsed time = 50.81s

    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%     -   53s

Explored 0 nodes (84823 simplex iterations) in 53.56 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%