Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:54:45 2012 Optimize a model with 49979 rows, 44310 columns and 193198 nonzeros Presolve removed 21 rows and 3992 columns Presolve time: 1.17s Presolved: 49958 rows, 40318 columns, 188732 nonzeros Variable types: 0 continuous, 40318 integer (40318 binary) Found heuristic solution: objective 210.0000000 Root relaxation: objective 2.000000e+00, 28644 iterations, 2.34 seconds Total elapsed time = 6.71s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 368 210.00000 2.00000 99.0% - 7s H 0 0 203.0000000 2.00000 99.0% - 7s H 0 0 4.0000000 2.00000 50.0% - 8s H 0 0 3.0000000 2.00000 33.3% - 8s 0 0 infeasible 0 3.00000 2.00000 33.3% - 8s Cutting planes: Gomory: 1 Clique: 4 Zero half: 24 Explored 0 nodes (97534 simplex iterations) in 8.39 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%