Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:41:37 2012

Optimize a model with 60115 rows, 51302 columns and 230518 nonzeros
Presolve removed 1358 rows and 2 columns
Presolve time: 1.59s
Presolved: 58983 rows, 51300 columns, 277684 nonzeros
Variable types: 0 continuous, 51300 integer (51300 binary)
Found heuristic solution: objective 226.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   35676    3.0000880e+00   4.087004e+01   0.000000e+00      5s
   41055    3.0000940e+00   9.351326e+01   0.000000e+00     10s
   44862    3.0000982e+00   5.100000e+01   0.000000e+00     15s
   48951    3.0001040e+00   1.084821e+00   0.000000e+00     20s
   49179    3.0000000e+00   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 3.000000e+00, 49179 iterations, 20.13 seconds
Total elapsed time = 63.00s
Total elapsed time = 74.05s

    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%     -   75s

Explored 0 nodes (124772 simplex iterations) in 75.24 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%