Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:46 2012 Optimize a model with 251 rows, 279 columns and 904 nonzeros Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 251 rows, 248 columns, 873 nonzeros Variable types: 0 continuous, 248 integer (247 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 175 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 41.00000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00125 0 98 22.00000 0.00125 100% - 0s H 0 0 21.0000000 0.00125 100% - 0s 0 0 0.50664 0 101 21.00000 0.50664 97.6% - 0s H 0 0 17.0000000 0.50664 97.0% - 0s H 0 0 13.0000000 0.50664 96.1% - 0s 0 0 0.50683 0 104 13.00000 0.50683 96.1% - 0s 0 0 0.50683 0 104 13.00000 0.50683 96.1% - 0s 0 2 0.50824 0 103 13.00000 0.50824 96.1% - 0s * 44 12 33 3.0000000 1.00000 66.7% 19.6 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 66 nodes (1873 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%