Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:37:44 2012 Optimize a model with 30099 rows, 30800 columns and 120223 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.66s Presolved: 30272 rows, 30798 columns, 150504 nonzeros Variable types: 0 continuous, 30798 integer (30798 binary) Found heuristic solution: objective 175.0000000 Root relaxation: objective 2.000000e+00, 17989 iterations, 1.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 262 175.00000 2.00000 98.9% - 3s H 0 0 163.0000000 2.00000 98.8% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s 0 0 infeasible 0 3.00000 2.00000 33.3% - 4s Cutting planes: Gomory: 2 Zero half: 21 Explored 0 nodes (59771 simplex iterations) in 4.20 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%