Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:03:47 2012

Optimize a model with 54807 rows, 49062 columns and 212379 nonzeros
Presolve removed 463 rows and 4201 columns
Presolve time: 1.41s
Presolved: 54344 rows, 44861 columns, 206583 nonzeros
Variable types: 0 continuous, 44861 integer (44861 binary)
Found heuristic solution: objective 221.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   36108    3.0000818e+00   1.943333e+01   0.000000e+00      5s
   43212    3.0000898e+00   8.386512e+00   0.000000e+00     10s
   47700    3.0000945e+00   1.243875e+01   0.000000e+00     15s
   51916    3.0000986e+00   5.572032e+00   0.000000e+00     20s
   54879    3.0000000e+00   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 3.000000e+00, 54879 iterations, 23.18 seconds
Total elapsed time = 44.91s
Total elapsed time = 51.19s

    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%     -   51s

Explored 0 nodes (112710 simplex iterations) in 51.94 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%