Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012 Optimize a model with 84 rows, 45 columns and 168 nonzeros Presolve removed 18 rows and 7 columns Presolve time: 0.00s Presolved: 66 rows, 38 columns, 136 nonzeros Variable types: 0 continuous, 38 integer (38 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 2.200000e+01, 37 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 22.0000000 22.00000 0.0% - 0s Explored 0 nodes (37 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%