Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:07:51 2012 Optimize a model with 2419 rows, 506 columns and 7654 nonzeros Presolve removed 940 rows and 2 columns Presolve time: 0.06s Presolved: 1479 rows, 504 columns, 7606 nonzeros Variable types: 0 continuous, 504 integer (504 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 5.000000e+00, 1276 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5.00000 0 34 22.00000 5.00000 77.3% - 0s H 0 0 8.0000000 5.00000 37.5% - 0s 0 0 5.00000 0 94 8.00000 5.00000 37.5% - 0s H 0 0 6.0000000 5.00000 16.7% - 0s H 0 0 5.0000000 5.00000 0.0% - 0s Cutting planes: Zero half: 2 Explored 0 nodes (4079 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%