Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:59 2012 Optimize a model with 86 rows, 57 columns and 172 nonzeros Presolve removed 79 rows and 51 columns Presolve time: 0.00s Presolved: 7 rows, 6 columns, 14 nonzeros Variable types: 0 continuous, 6 integer (6 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.100000e+01, 5 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 31.0000000 31.00000 0.0% - 0s Explored 0 nodes (5 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%