Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:05:40 2012

Optimize a model with 59890 rows, 49062 columns and 227628 nonzeros
Presolve removed 459 rows and 3317 columns
Presolve time: 4.09s
Presolved: 59431 rows, 45745 columns, 222670 nonzeros
Variable types: 0 continuous, 45745 integer (45745 binary)
Found heuristic solution: objective 221.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32916    3.0001176e+00   1.115250e+02   0.000000e+00      5s
   38219    3.0001379e+00   5.863636e+01   0.000000e+00     10s
   42872    3.0001473e+00   1.038636e+02   0.000000e+00     15s
   47102    3.0001513e+00   3.603846e+01   0.000000e+00     20s
   48200    3.0000000e+00   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 3.000000e+00, 48200 iterations, 21.71 seconds
Total elapsed time = 62.62s

    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%     -   64s

Explored 0 nodes (92609 simplex iterations) in 64.26 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%