Gurobi 5.0.1 (linux64) logging started Tue Nov 20 15:55:24 2012 Optimize a model with 87 rows, 121 columns and 174 nonzeros Presolve removed 87 rows and 121 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 8.300000000000e+01, best bound 8.300000000000e+01, gap 0.0%