Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:40 2012 Optimize a model with 77 rows, 83 columns and 273 nonzeros Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 77 rows, 78 columns, 268 nonzeros Variable types: 0 continuous, 78 integer (77 binary) Found heuristic solution: objective 12.0000000 Root relaxation: objective 0.000000e+00, 53 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 31 12.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.06349 0 33 3.00000 0.06349 97.9% - 0s H 0 0 2.0000000 0.06349 96.8% - 0s 0 0 0.66667 0 35 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 33 2.00000 0.66667 66.7% - 0s 0 2 1.00000 0 33 2.00000 1.00000 50.0% - 0s Cutting planes: Gomory: 1 Explored 26 nodes (551 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%