Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:09:44 2012

Optimize a model with 55912 rows, 49062 columns and 215694 nonzeros
Presolve removed 444 rows and 2 columns
Presolve time: 1.31s
Presolved: 55689 rows, 49060 columns, 262928 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
   27331    3.0000850e+00   1.815000e+02   0.000000e+00      5s
   31919    3.0000886e+00   7.063789e+01   0.000000e+00     10s
   35755    3.0000929e+00   5.432781e+01   0.000000e+00     15s
   39591    3.0000974e+00   5.950000e+01   0.000000e+00     20s
   43536    3.0000000e+00   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 3.000000e+00, 43536 iterations, 24.91 seconds
Total elapsed time = 65.67s

    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%     -   67s

Explored 0 nodes (101235 simplex iterations) in 67.48 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%