Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:31:07 2012 Optimize a model with 40601 rows, 40602 columns and 161401 nonzeros Presolve removed 30 rows and 5630 columns Presolve time: 0.92s Presolved: 40571 rows, 34972 columns, 155369 nonzeros Variable types: 0 continuous, 34972 integer (34972 binary) Found heuristic solution: objective 201.0000000 Root relaxation: objective 2.000000e+00, 24062 iterations, 1.69 seconds Total elapsed time = 5.19s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 320 201.00000 2.00000 99.0% - 6s H 0 0 197.0000000 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 Cutting planes: Zero half: 2 Explored 0 nodes (84186 simplex iterations) in 6.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%