Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:24:14 2012

Optimize a model with 57149 rows, 50850 columns and 221173 nonzeros
Presolve removed 452 rows and 2 columns
Presolve time: 1.36s
Presolved: 56922 rows, 50848 columns, 270169 nonzeros
Variable types: 0 continuous, 50848 integer (50848 binary)
Found heuristic solution: objective 225.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32829    3.0000834e+00   2.614286e+01   0.000000e+00      5s
   38763    3.0000851e+00   1.732032e+01   0.000000e+00     10s
   43179    3.0000864e+00   7.813665e+00   0.000000e+00     15s
   46137    3.0000000e+00   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 3.000000e+00, 46137 iterations, 18.22 seconds
Total elapsed time = 55.29s

    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%     -   56s

Explored 0 nodes (89697 simplex iterations) in 56.23 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%