Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:11 2012 Optimize a model with 226 rows, 31 columns and 452 nonzeros Presolve removed 157 rows and 0 columns Presolve time: 0.00s Presolved: 69 rows, 31 columns, 318 nonzeros Variable types: 0 continuous, 31 integer (31 binary) Found heuristic solution: objective 4.0000000 Root relaxation: objective 7.208333e+00, 53 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7.20833 0 26 4.00000 7.20833 80.2% - 0s H 0 0 6.0000000 7.20833 20.1% - 0s 0 0 7.00000 0 14 6.00000 7.00000 16.7% - 0s H 0 0 7.0000000 7.00000 0.0% - 0s Explored 0 nodes (74 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%