Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:07 2012

Optimize a model with 615 rows, 812 columns and 2518 nonzeros
Presolve removed 64 rows and 170 columns
Presolve time: 0.02s
Presolved: 551 rows, 642 columns, 2170 nonzeros
Variable types: 0 continuous, 642 integer (642 binary)
Found heuristic solution: objective 28.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: infeasible, 37 iterations, 0.00 seconds

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

     0     0 infeasible    0         3.00000    2.00000  33.3%     -    0s

Explored 0 nodes (37 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%