Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:27:50 2012

Optimize a model with 56018 rows, 45582 columns and 212572 nonzeros
Presolve removed 854 rows and 2 columns
Presolve time: 3.98s
Presolved: 55377 rows, 45580 columns, 255293 nonzeros
Variable types: 0 continuous, 45580 integer (45580 binary)
Found heuristic solution: objective 213.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28131    3.0000822e+00   5.850000e+01   0.000000e+00      5s
   32863    3.0000844e+00   3.666667e+01   0.000000e+00     10s
   36870    3.0000860e+00   1.183484e+01   0.000000e+00     15s
   40295    3.0000880e+00   2.970732e+00   0.000000e+00     20s
   41019    3.0000000e+00   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 3.000000e+00, 41019 iterations, 21.11 seconds
Total elapsed time = 65.80s

    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%     -   69s

Explored 0 nodes (116389 simplex iterations) in 69.10 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%