Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:34 2012 Optimize a model with 30 rows, 24 columns and 60 nonzeros Presolve removed 30 rows and 24 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 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%