Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:17 2012 Optimize a model with 587 rows, 49 columns and 1174 nonzeros Presolve removed 406 rows and 0 columns Presolve time: 0.01s Presolved: 181 rows, 49 columns, 999 nonzeros Variable types: 0 continuous, 49 integer (49 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 9.291985e+00, 97 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9.29198 0 42 5.00000 9.29198 85.8% - 0s H 0 0 6.0000000 9.29198 54.9% - 0s 0 0 8.80989 0 45 6.00000 8.80989 46.8% - 0s H 0 0 7.0000000 8.80989 25.9% - 0s H 0 0 8.0000000 8.80989 10.1% - 0s Cutting planes: Gomory: 1 Clique: 10 Zero half: 2 Explored 0 nodes (148 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%