Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:20:35 2012 Optimize a model with 33651 rows, 35532 columns and 135546 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.83s Presolved: 33837 rows, 35530 columns, 170532 nonzeros Variable types: 0 continuous, 35530 integer (35530 binary) Found heuristic solution: objective 188.0000000 Root relaxation: objective 2.000000e+00, 21288 iterations, 1.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 288 188.00000 2.00000 98.9% - 4s H 0 0 119.0000000 2.00000 98.3% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 5s 0 0 infeasible 0 3.00000 2.00000 33.3% - 5s Cutting planes: Gomory: 3 Zero half: 25 Explored 0 nodes (71117 simplex iterations) in 5.15 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%