Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:39 2012 Optimize a model with 57 rows, 63 columns and 203 nonzeros Presolve removed 0 rows and 8 columns Presolve time: 0.00s Presolved: 57 rows, 55 columns, 195 nonzeros Variable types: 0 continuous, 55 integer (54 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 26 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.27068 0 28 6.00000 0.27068 95.5% - 0s H 0 0 5.0000000 0.27068 94.6% - 0s H 0 0 4.0000000 0.27068 93.2% - 0s 0 0 0.79644 0 30 4.00000 0.79644 80.1% - 0s H 0 0 3.0000000 0.79644 73.5% - 0s 0 0 0.79644 0 30 3.00000 0.79644 73.5% - 0s H 0 0 2.0000000 0.79644 60.2% - 0s 0 0 cutoff 0 2.00000 2.00000 0.0% - 0s Cutting planes: Gomory: 4 Explored 1 nodes (165 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%