Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:11 2013 Optimize a model with 18 rows, 16 columns and 37 nonzeros Presolve removed 18 rows and 16 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.438517421134e+03, best bound 3.438517421134e+03, gap 0.0%