Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:14:29 2012 Optimize a model with 23903 rows, 27722 columns and 98602 nonzeros Presolve removed 24 rows and 3654 columns Presolve time: 0.52s Presolved: 23879 rows, 24068 columns, 94662 nonzeros Variable types: 0 continuous, 24068 integer (24068 binary) Found heuristic solution: objective 166.0000000 Root relaxation: objective 2.000000e+00, 17037 iterations, 1.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 236 166.00000 2.00000 98.8% - 3s H 0 0 125.0000000 2.00000 98.4% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s H 0 0 3.0000000 2.00000 33.3% - 3s 0 0 infeasible 0 3.00000 2.00000 33.3% - 3s Cutting planes: Gomory: 1 Zero half: 4 Explored 0 nodes (54064 simplex iterations) in 3.45 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%