Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:16 2012 Optimize a model with 241 rows, 269 columns and 869 nonzeros Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 241 rows, 242 columns, 842 nonzeros Variable types: 0 continuous, 242 integer (241 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 167 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 95 39.00000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.05316 0 97 19.00000 0.05316 100% - 0s H 0 0 14.0000000 0.05316 100% - 0s H 0 0 8.0000000 0.05316 99.3% - 0s 0 0 0.66667 0 99 8.00000 0.66667 91.7% - 0s 0 0 0.66667 0 100 8.00000 0.66667 91.7% - 0s 0 0 0.66667 0 97 8.00000 0.66667 91.7% - 0s H 0 0 3.0000000 0.66667 77.8% - 0s H 0 0 2.0000000 0.66667 66.7% - 0s 0 0 0.66667 0 70 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 75 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 76 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 76 2.00000 0.66667 66.7% - 0s 0 2 0.66667 0 76 2.00000 0.66667 66.7% - 0s Cutting planes: Gomory: 2 Zero half: 2 Explored 21 nodes (1700 simplex iterations) in 0.25 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%