Gurobi 5.0.1 (linux64) logging started Sat Dec  8 03:59:51 2012

Optimize a model with 555 rows, 540 columns and 1782 nonzeros
Presolve removed 39 rows and 24 columns
Presolve time: 0.01s
Presolved: 516 rows, 516 columns, 1761 nonzeros
Variable types: 345 continuous, 171 integer (171 binary)

Root relaxation: infeasible, 424 iterations, 0.01 seconds

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

     0     0 infeasible    0               - infeasible     -      -    0s

Explored 0 nodes (424 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Model is infeasible
Best objective -, best bound -, gap -