Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:19:07 2013

Optimize a model with 49770 rows, 49070 columns and 196070 nonzeros
Presolve removed 2278 rows and 0 columns
Presolve time: 0.29s
Presolved: 47492 rows, 49070 columns, 191514 nonzeros
Variable types: 49000 continuous, 70 integer (70 binary)

Root relaxation: objective 8.269068e+04, 12869 iterations, 2.35 seconds

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

     0     0 82690.6787    0    2          - 82690.6787     -      -    2s
H    0     0                    83558.000000 82690.6787  1.04%     -    2s
H    0     0                    82727.000000 82690.6787  0.04%     -    3s
     0     0 82691.7834    0    2 82727.0000 82691.7834  0.04%     -    3s
     0     0 82691.7834    0    2 82727.0000 82691.7834  0.04%     -    4s
     0     0 82693.9064    0    3 82727.0000 82693.9064  0.04%     -    4s
     0     0     cutoff    0      82727.0000 82727.0000   0.0%     -    5s

Cutting planes:
  Gomory: 2

Explored 0 nodes (16876 simplex iterations) in 5.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.272700000000e+04, best bound 8.272700000000e+04, gap 0.0%