Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:43:10 2012

Optimize a model with 51413 rows, 43890 columns and 197085 nonzeros
Presolve removed 446 rows and 5436 columns
Presolve time: 1.27s
Presolved: 50967 rows, 38454 columns, 190118 nonzeros
Variable types: 0 continuous, 38454 integer (38454 binary)
Found heuristic solution: objective 209.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34570    3.0000775e+00   6.231770e+01   0.000000e+00      5s
   40774    3.0000844e+00   1.468331e+03   0.000000e+00     10s
   45130    3.0000890e+00   1.515763e+01   0.000000e+00     15s
   49486    3.0000928e+00   1.114423e+02   0.000000e+00     20s
   53578    3.0000963e+00   2.861964e+01   0.000000e+00     25s
   57406    3.0001007e+00   1.766944e+00   0.000000e+00     30s
   58327    3.0000000e+00   0.000000e+00   0.000000e+00     31s

Root relaxation: objective 3.000000e+00, 58327 iterations, 31.19 seconds
Total elapsed time = 61.21s
Total elapsed time = 66.03s

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

     0     0    3.00000    0   81  209.00000    3.00000  98.6%     -   66s
H    0     0                       4.0000000    3.00000  25.0%     -   66s
H    0     0                       3.0000000    3.00000   0.0%     -   66s

Explored 0 nodes (142802 simplex iterations) in 66.56 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%