Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:01 2012 Optimize a model with 401 rows, 398 columns and 1398 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 401 rows, 373 columns, 1373 nonzeros Variable types: 0 continuous, 373 integer (372 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 0.000000e+00, 233 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 0 160 72.00000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s 0 0 0.22131 0 162 47.00000 0.22131 100% - 0s H 0 0 36.0000000 0.22131 99.4% - 0s 0 0 0.81786 0 167 36.00000 0.81786 97.7% - 0s H 0 0 28.0000000 0.81786 97.1% - 0s 0 0 0.81932 0 170 28.00000 0.81932 97.1% - 0s 0 0 0.81932 0 170 28.00000 0.81932 97.1% - 0s 0 2 0.81995 0 167 28.00000 0.81995 97.1% - 0s H 27 27 11.0000000 0.95885 91.3% 37.6 0s * 38 25 22 10.0000000 0.95885 90.4% 31.5 0s * 133 48 10 9.0000000 1.02578 88.6% 30.5 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 333 nodes (10943 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%