Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:49:57 2013 Optimize a model with 39 rows, 20 columns and 77 nonzeros Presolve removed 39 rows and 20 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 4.757000000000e+03, best bound 4.757000000000e+03, gap 0.0%