Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:18:56 2012

Optimize a model with 66575 rows, 52212 columns and 250798 nonzeros
Presolve removed 912 rows and 0 columns (presolve time = 5s) ...
Presolve removed 914 rows and 2 columns
Presolve time: 5.11s
Presolved: 65889 rows, 52210 columns, 299926 nonzeros
Variable types: 0 continuous, 52210 integer (52210 binary)
Found heuristic solution: objective 228.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34774    3.0001358e+00   1.372000e+02   0.000000e+00      5s
   38811    3.0001541e+00   1.285882e+02   0.000000e+00     10s
   43699    3.0001664e+00   2.220000e+02   0.000000e+00     15s
   48139    3.0001729e+00   1.028524e+02   0.000000e+00     20s
   51099    3.0001739e+00   4.854657e+00   0.000000e+00     25s
   51563    3.0000000e+00   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 3.000000e+00, 51563 iterations, 26.15 seconds
Total elapsed time = 75.59s
Total elapsed time = 81.97s

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    3.00000    0  185  228.00000    3.00000  98.7%     -   84s
H    0     0                       4.0000000    3.00000  25.0%     -   85s
H    0     0                       3.0000000    3.00000   0.0%     -   85s

Explored 0 nodes (135506 simplex iterations) in 85.16 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%