Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:09:23 2012 Optimize a model with 26405 rows, 26732 columns and 105133 nonzeros Presolve removed 26 rows and 3914 columns Presolve time: 0.55s Presolved: 26379 rows, 22818 columns, 100897 nonzeros Variable types: 0 continuous, 22818 integer (22818 binary) Found heuristic solution: objective 163.0000000 Root relaxation: objective 2.000000e+00, 16170 iterations, 0.91 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 266 163.00000 2.00000 98.8% - 3s H 0 0 126.0000000 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: 18 Explored 0 nodes (55522 simplex iterations) in 3.65 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%