Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:32:13 2012 Optimize a model with 42611 rows, 40602 columns and 167431 nonzeros Presolve removed 20 rows and 3620 columns Presolve time: 0.95s Presolved: 42591 rows, 36982 columns, 163389 nonzeros Variable types: 0 continuous, 36982 integer (36982 binary) Found heuristic solution: objective 201.0000000 Root relaxation: objective 2.000000e+00, 26830 iterations, 1.95 seconds Total elapsed time = 5.69s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 344 201.00000 2.00000 99.0% - 6s H 0 0 188.0000000 2.00000 98.9% - 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% - 7s Cutting planes: Gomory: 2 Zero half: 26 Explored 0 nodes (88332 simplex iterations) in 7.08 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%