Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:10:53 2012

Optimize a model with 53260 rows, 49062 columns and 207738 nonzeros
Presolve removed 886 rows and 2 columns
Presolve time: 1.36s
Presolved: 52595 rows, 49060 columns, 253895 nonzeros
Variable types: 0 continuous, 49060 integer (49060 binary)
Found heuristic solution: objective 221.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   30972    3.0000799e+00   1.780000e+01   0.000000e+00      5s
   35528    3.0000834e+00   9.393549e+01   0.000000e+00     10s
   39414    3.0000878e+00   1.020451e+01   0.000000e+00     15s
   41115    3.0000000e+00   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 3.000000e+00, 41115 iterations, 16.93 seconds
Total elapsed time = 40.95s
Total elapsed time = 56.30s
Total elapsed time = 60.72s

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    3.00000    0  420  221.00000    3.00000  98.6%     -   62s
H    0     0                       3.0000000    3.00000   0.0%     -   62s

Explored 0 nodes (126678 simplex iterations) in 62.66 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%