Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:24 2012 Optimize a model with 85 rows, 85 columns and 295 nonzeros Presolve removed 0 rows and 7 columns Presolve time: 0.00s Presolved: 85 rows, 78 columns, 288 nonzeros Variable types: 0 continuous, 78 integer (77 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 0.000000e+00, 50 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 35 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.40000 0 36 5.00000 0.40000 92.0% - 0s 0 0 1.00000 0 35 5.00000 1.00000 80.0% - 0s 0 0 1.00000 0 37 5.00000 1.00000 80.0% - 0s 0 0 1.00000 0 37 5.00000 1.00000 80.0% - 0s H 0 0 4.0000000 1.00000 75.0% - 0s H 0 0 3.0000000 1.00000 66.7% - 0s H 0 0 2.0000000 1.00000 50.0% - 0s 0 0 1.00000 0 12 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 15 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 15 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 13 2.00000 1.00000 50.0% - 0s 0 2 1.00000 0 13 2.00000 1.00000 50.0% - 0s Cutting planes: Gomory: 1 Mod-K: 1 Explored 3 nodes (353 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%