Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:53 2013

Optimize a model with 12670 rows, 12320 columns and 49070 nonzeros
Presolve removed 35 rows and 0 columns
Presolve time: 0.05s
Presolved: 12635 rows, 12320 columns, 49035 nonzeros
Variable types: 12285 continuous, 35 integer (35 binary)

Root relaxation: objective 3.614085e+04, 1847 iterations, 0.30 seconds

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

     0     0 36140.8533    0   28          - 36140.8533     -      -    0s
H    0     0                    40245.000000 36140.8533  10.2%     -    0s
     0     0 38805.5972    0    4 40245.0000 38805.5972  3.58%     -    0s
H    0     0                    39495.640756 38805.5972  1.75%     -    0s
H    0     0                    39069.000000 38805.5972  0.67%     -    0s
H    0     0                    38812.000000 38805.5972  0.02%     -    0s
     0     0 38807.6838    0    3 38812.0000 38807.6838  0.01%     -    0s

Cutting planes:
  Implied bound: 26

Explored 0 nodes (2456 simplex iterations) in 0.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.881200000000e+04, best bound 3.881200000000e+04, gap 0.0%