Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:23:53 2013

Optimize a model with 32032 rows, 31472 columns and 125552 nonzeros
Presolve removed 56 rows and 0 columns
Presolve time: 0.14s
Presolved: 31976 rows, 31472 columns, 125496 nonzeros
Variable types: 31416 continuous, 56 integer (56 binary)

Root relaxation: objective 4.667838e+04, 4170 iterations, 1.73 seconds

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

     0     0 46678.3848    0   49          - 46678.3848     -      -    2s
H    0     0                    66983.000000 46678.3848  30.3%     -    3s
     0     0 56645.1227    0    8 66983.0000 56645.1227  15.4%     -    5s
H    0     0                    62640.234544 56645.1227  9.57%     -    5s
H    0     0                    59552.000000 56645.1227  4.88%     -    5s
     0     0 56830.5390    0    4 59552.0000 56830.5390  4.57%     -    6s
H    0     0                    58058.135981 56830.5390  2.11%     -    6s
H    0     0                    57375.000000 56830.5390  0.95%     -    6s
H    0     0                    56865.000000 56830.5390  0.06%     -    6s
     0     0     cutoff    0      56865.0000 56865.0000   0.0%     -    6s

Cutting planes:
  Implied bound: 49

Explored 0 nodes (7017 simplex iterations) in 6.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.686500000000e+04, best bound 5.686500000000e+04, gap 0.0%