Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:39:18 2013

Optimize a model with 37942 rows, 37332 columns and 148962 nonzeros
Presolve removed 61 rows and 0 columns
Presolve time: 0.17s
Presolved: 37881 rows, 37332 columns, 148901 nonzeros
Variable types: 37271 continuous, 61 integer (61 binary)

Root relaxation: objective 5.376668e+04, 4912 iterations, 1.88 seconds

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

     0     0 53766.6767    0   42          - 53766.6767     -      -    2s
H    0     0                    76159.000000 53766.6767  29.4%     -    3s
     0     0 62984.6725    0   18 76159.0000 62984.6725  17.3%     -    7s
H    0     0                    73157.000000 62984.6725  13.9%     -    8s
     0     0 65967.3332    0    8 73157.0000 65967.3332  9.83%     -    9s
H    0     0                    72899.000000 65967.3332  9.51%     -    9s
     0     0 66257.0165    0    6 72899.0000 66257.0165  9.11%     -    9s
H    0     0                    72456.000000 66257.0165  8.56%     -   10s
H    0     0                    70799.000000 66257.0165  6.42%     -   10s
     0     0 66276.9266    0    6 70799.0000 66276.9266  6.39%     -   10s
H    0     0                    70619.000000 66276.9266  6.15%     -   10s
H    0     0                    66332.000000 66276.9266  0.08%     -   10s
     0     0 66288.4855    0    4 66332.0000 66288.4855  0.07%     -   10s
     0     0     cutoff    0      66332.0000 66332.0000   0.0%     -   11s

Cutting planes:
  Implied bound: 58

Explored 0 nodes (11404 simplex iterations) in 11.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.633200000000e+04, best bound 6.633200000000e+04, gap 0.0%