Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:16 2012 Optimize a model with 576 rows, 47 columns and 1152 nonzeros Presolve removed 419 rows and 0 columns Presolve time: 0.01s Presolved: 157 rows, 47 columns, 922 nonzeros Variable types: 0 continuous, 47 integer (47 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 8.351967e+00, 81 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.35197 0 38 5.00000 8.35197 67.0% - 0s H 0 0 6.0000000 8.35197 39.2% - 0s H 0 0 7.0000000 8.35197 19.3% - 0s 0 0 cutoff 0 7.00000 7.99999 14.3% - 0s Cutting planes: Gomory: 1 Clique: 25 Zero half: 51 Explored 0 nodes (110 simplex iterations) in 0.02 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%