Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:23 2012 Optimize a model with 221 rows, 252 columns and 802 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 221 rows, 226 columns, 776 nonzeros Variable types: 0 continuous, 226 integer (225 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 152 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 96 32.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.04154 0 98 20.00000 0.04154 100% - 0s H 0 0 15.0000000 0.04154 100% - 0s H 0 0 2.0000000 0.04154 97.9% - 0s 0 0 0.66667 0 100 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 102 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 98 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 98 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 98 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 98 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 63 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 58 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 58 2.00000 0.66667 66.7% - 0s 0 2 0.66667 0 58 2.00000 0.66667 66.7% - 0s Cutting planes: Gomory: 2 Zero half: 1 Explored 10 nodes (1717 simplex iterations) in 0.18 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%