Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:19:50 2012

Optimize a model with 68309 rows, 53130 columns and 256908 nonzeros
Presolve removed 460 rows and 0 columns (presolve time = 5s) ...
Presolve removed 462 rows and 2 columns
Presolve time: 5.43s
Presolved: 68077 rows, 53128 columns, 308068 nonzeros
Variable types: 0 continuous, 53128 integer (53128 binary)
Found heuristic solution: objective 230.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34914    3.0000859e+00   3.129412e+01   0.000000e+00      5s
   40014    3.0000931e+00   5.045213e+01   0.000000e+00     10s
   43614    3.0000967e+00   4.901958e+01   0.000000e+00     15s
   46914    3.0000994e+00   4.813037e+01   0.000000e+00     20s
   50364    3.0001021e+00   2.529685e+01   0.000000e+00     25s
   53964    3.0001052e+00   4.155556e+01   0.000000e+00     30s
   57414    3.0001087e+00   9.886639e+01   0.000000e+00     35s
   60714    3.0001129e+00   4.374504e+00   0.000000e+00     40s
   63084    3.0000000e+00   0.000000e+00   0.000000e+00     44s

Root relaxation: objective 3.000000e+00, 63084 iterations, 43.76 seconds
Total elapsed time = 103.42s
Total elapsed time = 112.77s
Total elapsed time = 115.97s

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

     0     0    3.00000    0  170  230.00000    3.00000  98.7%     -  117s
H    0     0                       3.0000000    3.00000   0.0%     -  117s

Explored 0 nodes (194577 simplex iterations) in 118.00 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%