Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:08:09 2012

Optimize a model with 61216 rows, 49062 columns and 231606 nonzeros
Presolve removed 1770 rows and 2 columns
Presolve time: 4.57s
Presolved: 59667 rows, 49060 columns, 275489 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
   30525    3.0000822e+00   3.912500e+01   0.000000e+00      5s
   35215    3.0000858e+00   1.317373e+02   0.000000e+00     10s
   38599    3.0000905e+00   7.725654e+02   0.000000e+00     15s
   41842    3.0000931e+00   2.457490e+01   0.000000e+00     20s
   45226    3.0000953e+00   1.043668e+01   0.000000e+00     25s
   48328    3.0000974e+00   6.793745e+01   0.000000e+00     30s
   51571    3.0000996e+00   6.840111e+01   0.000000e+00     35s
   55096    3.0001023e+00   6.725962e+00   0.000000e+00     40s
   55340    3.0000000e+00   0.000000e+00   0.000000e+00     40s

Root relaxation: objective 3.000000e+00, 55340 iterations, 40.49 seconds
Total elapsed time = 90.23s

    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%     -   92s

Explored 0 nodes (130674 simplex iterations) in 92.63 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%