Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:51:28 2012 Optimize a model with 44050 rows, 41412 columns and 172548 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.04s Presolved: 44251 rows, 41410 columns, 213323 nonzeros Variable types: 0 continuous, 41410 integer (41410 binary) Found heuristic solution: objective 203.0000000 Root relaxation: objective 2.000000e+00, 27426 iterations, 2.45 seconds Total elapsed time = 6.24s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 344 203.00000 2.00000 99.0% - 7s H 0 0 194.0000000 2.00000 99.0% - 7s H 0 0 4.0000000 2.00000 50.0% - 7s H 0 0 3.0000000 2.00000 33.3% - 7s 0 0 infeasible 0 3.00000 2.00000 33.3% - 7s Cutting planes: Gomory: 1 Zero half: 33 Explored 0 nodes (86035 simplex iterations) in 7.54 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%