Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:14:21 2012 Optimize a model with 24401 rows, 27722 columns and 100096 nonzeros Presolve removed 32 rows and 4982 columns Presolve time: 0.53s Presolved: 24369 rows, 22740 columns, 94822 nonzeros Variable types: 0 continuous, 22740 integer (22740 binary) Found heuristic solution: objective 166.0000000 Root relaxation: objective 2.000000e+00, 15504 iterations, 0.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 238 166.00000 2.00000 98.8% - 2s H 0 0 74.0000000 2.00000 97.3% - 2s 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: 2 Zero half: 14 Explored 0 nodes (51844 simplex iterations) in 3.17 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%