Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:02:10 2012 Optimize a model with 39202 rows, 39006 columns and 155628 nonzeros Presolve removed 27 rows and 4927 columns Presolve time: 0.87s Presolved: 39175 rows, 34079 columns, 150305 nonzeros Variable types: 0 continuous, 34079 integer (34079 binary) Found heuristic solution: objective 197.0000000 Root relaxation: objective 2.000000e+00, 23243 iterations, 1.70 seconds Total elapsed time = 5.22s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 304 197.00000 2.00000 99.0% - 5s H 0 0 180.0000000 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 Cutting planes: Zero half: 1 Explored 0 nodes (79102 simplex iterations) in 6.27 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%