Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:15:48 2012 Optimize a model with 44376 rows, 39800 columns and 171934 nonzeros Presolve removed 33 rows and 6171 columns Presolve time: 0.99s Presolved: 44343 rows, 33629 columns, 165319 nonzeros Variable types: 0 continuous, 33629 integer (33629 binary) Found heuristic solution: objective 199.0000000 Root relaxation: objective 2.000000e+00, 22866 iterations, 1.59 seconds Total elapsed time = 5.22s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 308 199.00000 2.00000 99.0% - 6s H 0 0 172.0000000 2.00000 98.8% - 6s H 0 0 4.0000000 2.00000 50.0% - 6s H 0 0 3.0000000 2.00000 33.3% - 6s 0 0 infeasible 0 3.00000 2.00000 33.3% - 6s Cutting planes: Gomory: 1 Clique: 2 Zero half: 42 Explored 0 nodes (76115 simplex iterations) in 6.50 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%