Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:15 2012 Optimize a model with 241 rows, 275 columns and 875 nonzeros Presolve removed 0 rows and 37 columns Presolve time: 0.00s Presolved: 241 rows, 238 columns, 838 nonzeros Variable types: 0 continuous, 238 integer (237 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 163 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 0 104 31.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.20742 0 105 21.00000 0.20742 99.0% - 0s H 0 0 18.0000000 0.20742 98.8% - 0s H 0 0 12.0000000 0.20742 98.3% - 0s 0 0 1.00000 0 104 12.00000 1.00000 91.7% - 0s H 0 0 8.0000000 1.00000 87.5% - 0s 0 0 1.00000 0 106 8.00000 1.00000 87.5% - 0s 0 0 1.00000 0 85 8.00000 1.00000 87.5% - 0s H 0 0 6.0000000 1.00000 83.3% - 0s H 0 0 4.0000000 1.00000 75.0% - 0s 0 0 1.00000 0 85 4.00000 1.00000 75.0% - 0s H 0 0 3.0000000 1.00000 66.7% - 0s 0 0 1.00000 0 105 3.00000 1.00000 66.7% - 0s 0 0 1.00000 0 105 3.00000 1.00000 66.7% - 0s H 0 0 2.0000000 1.00000 50.0% - 0s 0 0 1.00000 0 30 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 33 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 33 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 22 2.00000 1.00000 50.0% - 0s 0 2 1.00000 0 22 2.00000 1.00000 50.0% - 0s Cutting planes: Gomory: 1 Explored 3 nodes (1597 simplex iterations) in 0.09 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%