Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:12 2012 Optimize a model with 305 rows, 35 columns and 610 nonzeros Presolve removed 212 rows and 0 columns Presolve time: 0.00s Presolved: 93 rows, 35 columns, 463 nonzeros Variable types: 0 continuous, 35 integer (35 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 7.214286e+00, 49 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7.21429 0 29 5.00000 7.21429 44.3% - 0s H 0 0 6.0000000 7.21429 20.2% - 0s 0 0 cutoff 0 6.00000 6.99999 16.7% - 0s Cutting planes: Gomory: 2 Clique: 8 Zero half: 15 Explored 0 nodes (83 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%