Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:10:59 2012 Optimize a model with 33293 rows, 34782 columns and 133732 nonzeros Presolve removed 28 rows and 4838 columns Presolve time: 0.70s Presolved: 33265 rows, 29944 columns, 128538 nonzeros Variable types: 0 continuous, 29944 integer (29944 binary) Found heuristic solution: objective 186.0000000 Root relaxation: objective 2.000000e+00, 21484 iterations, 1.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 284 186.00000 2.00000 98.9% - 4s H 0 0 174.0000000 2.00000 98.9% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s 0 0 infeasible 0 3.00000 2.00000 33.3% - 4s Cutting planes: Gomory: 3 Zero half: 14 Explored 0 nodes (68511 simplex iterations) in 4.71 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%