Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:36 2012 Optimize a model with 67 rows, 33 columns and 134 nonzeros Presolve removed 22 rows and 5 columns Presolve time: 0.00s Presolved: 45 rows, 28 columns, 95 nonzeros Variable types: 0 continuous, 28 integer (28 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 1.450000e+01, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.50000 0 21 13.00000 14.50000 11.5% - 0s 0 0 14.00000 0 18 13.00000 14.00000 7.69% - 0s H 0 0 14.0000000 14.00000 0.0% - 0s Cutting planes: Zero half: 3 Explored 0 nodes (47 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%