Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:59:19 2012 Optimize a model with 18909 rows, 24180 columns and 80133 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.35s Presolved: 19062 rows, 24178 columns, 103914 nonzeros Variable types: 0 continuous, 24178 integer (24178 binary) Found heuristic solution: objective 155.0000000 Root relaxation: objective 2.000000e+00, 13140 iterations, 0.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 208 155.00000 2.00000 98.7% - 2s H 0 0 104.0000000 2.00000 98.1% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s H 0 0 3.0000000 2.00000 33.3% - 2s 0 0 infeasible 0 3.00000 2.00000 33.3% - 2s Cutting planes: Gomory: 1 Zero half: 10 Explored 0 nodes (40198 simplex iterations) in 2.35 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%