Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:35:52 2012 Optimize a model with 5291 rows, 812 columns and 16546 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 5289 rows, 810 columns, 21636 nonzeros Variable types: 0 continuous, 810 integer (810 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 3.843972e+00, 5248 iterations, 0.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.84397 0 559 28.00000 3.84397 86.3% - 1s 0 0 7.00000 0 89 28.00000 7.00000 75.0% - 1s H 0 0 10.0000000 7.00000 30.0% - 1s H 0 0 9.0000000 7.00000 22.2% - 1s H 0 0 7.0000000 7.00000 0.0% - 1s Cutting planes: Gomory: 1 Clique: 3 Explored 0 nodes (10581 simplex iterations) in 1.64 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%