Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:47:04 2012 Optimize a model with 14522 rows, 20022 columns and 62884 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.24s Presolved: 14661 rows, 20020 columns, 82559 nonzeros Variable types: 0 continuous, 20020 integer (20020 binary) Found heuristic solution: objective 141.0000000 Root relaxation: objective 2.000000e+00, 9954 iterations, 0.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 141.00000 2.00000 98.6% - 1s H 0 0 115.0000000 2.00000 98.3% - 1s H 0 0 4.0000000 2.00000 50.0% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Cutting planes: Gomory: 1 Zero half: 4 Explored 0 nodes (30735 simplex iterations) in 1.52 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%