Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:15 2012 Optimize a model with 492 rows, 44 columns and 984 nonzeros Presolve removed 343 rows and 0 columns Presolve time: 0.01s Presolved: 149 rows, 44 columns, 815 nonzeros Variable types: 0 continuous, 44 integer (44 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 8.167215e+00, 93 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.16722 0 37 6.00000 8.16722 36.1% - 0s H 0 0 7.0000000 8.16722 16.7% - 0s 0 0 cutoff 0 7.00000 7.99999 14.3% - 0s Cutting planes: Gomory: 2 Clique: 18 Zero half: 39 Explored 0 nodes (106 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%