Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:15:58 2012 Optimize a model with 44973 rows, 39800 columns and 173725 nonzeros Presolve removed 14 rows and 2390 columns Presolve time: 0.99s Presolved: 44959 rows, 37410 columns, 170885 nonzeros Variable types: 0 continuous, 37410 integer (37410 binary) Found heuristic solution: objective 199.0000000 Root relaxation: objective 2.000000e+00, 26201 iterations, 1.93 seconds Total elapsed time = 5.66s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 356 199.00000 2.00000 99.0% - 6s H 0 0 198.0000000 2.00000 99.0% - 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% - 6s Cutting planes: Gomory: 1 Zero half: 32 Explored 0 nodes (88493 simplex iterations) in 6.82 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%