Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:10 2012 Optimize a model with 84 rows, 18 columns and 168 nonzeros Presolve removed 54 rows and 0 columns Presolve time: 0.00s Presolved: 30 rows, 18 columns, 119 nonzeros Variable types: 0 continuous, 18 integer (18 binary) Found heuristic solution: objective 4.0000000 Root relaxation: cutoff, 13 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 4.00000 4.99999 25.0% - 0s Explored 0 nodes (13 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%