Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:32:03 2012 Optimize a model with 36480 rows, 36672 columns and 145158 nonzeros Presolve removed 27 rows and 4777 columns Presolve time: 0.81s Presolved: 36453 rows, 31895 columns, 140001 nonzeros Variable types: 0 continuous, 31895 integer (31895 binary) Found heuristic solution: objective 191.0000000 Root relaxation: objective 2.000000e+00, 21352 iterations, 1.31 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 306 191.00000 2.00000 99.0% - 5s H 0 0 189.0000000 2.00000 98.9% - 5s H 0 0 3.0000000 2.00000 33.3% - 5s 0 0 infeasible 0 3.00000 2.00000 33.3% - 5s Cutting planes: Gomory: 1 Zero half: 20 Explored 0 nodes (74775 simplex iterations) in 5.90 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%