Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:44:12 2012 Optimize a model with 14110 rows, 18906 columns and 60552 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.24s Presolved: 14245 rows, 18904 columns, 79115 nonzeros Variable types: 0 continuous, 18904 integer (18904 binary) Found heuristic solution: objective 137.0000000 Root relaxation: objective 2.000000e+00, 9487 iterations, 0.35 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 144 137.00000 2.00000 98.5% - 1s H 0 0 102.0000000 2.00000 98.0% - 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: 2 Explored 0 nodes (30862 simplex iterations) in 1.37 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%