Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:33 2012 Optimize a model with 3 rows, 12 columns and 6 nonzeros Presolve removed 3 rows and 12 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 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%