Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:11:11 2012 Optimize a model with 12572 rows, 16256 columns and 53338 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.22s Presolved: 12697 rows, 16254 columns, 69269 nonzeros Variable types: 0 continuous, 16254 integer (16254 binary) Found heuristic solution: objective 127.0000000 Root relaxation: objective 2.000000e+00, 8718 iterations, 0.35 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 162 127.00000 2.00000 98.4% - 1s H 0 0 88.0000000 2.00000 97.7% - 1s H 0 0 4.0000000 2.00000 50.0% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Cutting planes: Gomory: 1 Zero half: 6 Explored 0 nodes (29448 simplex iterations) in 1.35 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%