Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:15 2012 Optimize a model with 417 rows, 415 columns and 1455 nonzeros Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 417 rows, 383 columns, 1423 nonzeros Variable types: 0 continuous, 383 integer (382 binary) Found heuristic solution: objective 67.0000000 Root relaxation: objective 0.000000e+00, 246 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 0 172 67.00000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.29248 0 174 54.00000 0.29248 99.5% - 0s H 0 0 38.0000000 0.29248 99.2% - 0s 0 0 0.79622 0 177 38.00000 0.79622 97.9% - 0s H 0 0 16.0000000 0.79622 95.0% - 0s 0 0 0.79622 0 177 16.00000 0.79622 95.0% - 0s H 0 0 15.0000000 0.79622 94.7% - 0s H 0 0 14.0000000 0.79622 94.3% - 0s 0 2 0.89847 0 177 14.00000 0.89847 93.6% - 0s H 27 23 9.0000000 1.00000 88.9% 33.0 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 426 nodes (11925 simplex iterations) in 0.47 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%