Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:47:41 2012

Optimize a model with 61711 rows, 54056 columns and 238030 nonzeros
Presolve removed 949 rows and 4410 columns
Presolve time: 1.61s
Presolved: 60762 rows, 49646 columns, 230778 nonzeros
Variable types: 0 continuous, 49646 integer (49646 binary)
Found heuristic solution: objective 232.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   33359    3.0000897e+00   1.576471e+01   0.000000e+00      5s
   38078    3.0000924e+00   3.539029e+01   0.000000e+00     10s
   41367    3.0000956e+00   4.066667e+01   0.000000e+00     15s
   44942    3.0000991e+00   3.321531e+01   0.000000e+00     20s
   48517    3.0001031e+00   1.874709e+02   0.000000e+00     25s
   52235    3.0001067e+00   5.243377e+00   0.000000e+00     30s
   52889    3.0000000e+00   0.000000e+00   0.000000e+00     31s

Root relaxation: objective 3.000000e+00, 52889 iterations, 30.94 seconds
Total elapsed time = 59.96s
Total elapsed time = 66.89s

    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 (121166 simplex iterations) in 69.19 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%