Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:50:40 2013

Optimize a model with 646 rows, 567 columns and 2226 nonzeros
Presolve removed 7 rows and 0 columns
Presolve time: 0.00s
Presolved: 639 rows, 567 columns, 2219 nonzeros
Variable types: 560 continuous, 7 integer (7 binary)

Root relaxation: objective 1.551514e+04, 110 iterations, 0.00 seconds

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

     0     0 15515.1448    0    4          - 15515.1448     -      -    0s
H    0     0                    15572.000000 15515.1448  0.37%     -    0s
     0     0 15571.5455    0    1 15572.0000 15571.5455  0.00%     -    0s

Cutting planes:
  Implied bound: 2

Explored 0 nodes (131 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.557200000000e+04, best bound 1.557154545455e+04, gap 0.0029%