Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:08 2012 Optimize a model with 239 rows, 97 columns and 478 nonzeros Presolve removed 74 rows and 14 columns Presolve time: 0.00s Presolved: 165 rows, 83 columns, 345 nonzeros Variable types: 0 continuous, 83 integer (83 binary) Found heuristic solution: objective 46.0000000 Root relaxation: cutoff, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 46.00000 46.99995 2.17% - 0s Explored 0 nodes (83 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%