Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:08:01 2012 Optimize a model with 527 rows, 506 columns and 1978 nonzeros Presolve removed 4 rows and 46 columns Presolve time: 0.01s Presolved: 523 rows, 460 columns, 1886 nonzeros Variable types: 0 continuous, 460 integer (460 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 2.000000e+00, 303 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 36 22.00000 2.00000 90.9% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s H 0 0 3.0000000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Cutting planes: Gomory: 1 Zero half: 2 Explored 0 nodes (929 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%