Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:49:45 2012 Optimize a model with 30787 rows, 32220 columns and 123687 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.72s Presolved: 30964 rows, 32218 columns, 155384 nonzeros Variable types: 0 continuous, 32218 integer (32218 binary) Found heuristic solution: objective 179.0000000 Root relaxation: objective 2.000000e+00, 21207 iterations, 1.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 294 179.00000 2.00000 98.9% - 4s H 0 0 170.0000000 2.00000 98.8% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s 0 0 infeasible 0 3.00000 2.00000 33.3% - 5s Cutting planes: Gomory: 1 Zero half: 14 Explored 0 nodes (66380 simplex iterations) in 5.02 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%