Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:24:46 2012 Optimize a model with 453 rows, 442 columns and 1572 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 453 rows, 418 columns, 1548 nonzeros Variable types: 0 continuous, 418 integer (417 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 251 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 0 180 86.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.35444 0 182 62.00000 0.35444 99.4% - 0s H 0 0 56.0000000 0.35444 99.4% - 0s H 0 0 53.0000000 0.35444 99.3% - 0s 0 0 0.89265 0 184 53.00000 0.89265 98.3% - 0s H 0 0 52.0000000 0.89265 98.3% - 0s H 0 0 49.0000000 0.89265 98.2% - 0s 0 0 0.89285 0 189 49.00000 0.89285 98.2% - 0s 0 0 0.89285 0 187 49.00000 0.89285 98.2% - 0s H 0 0 40.0000000 0.89285 97.8% - 0s H 0 0 37.0000000 0.89285 97.6% - 0s H 0 0 34.0000000 0.89285 97.4% - 0s 0 2 0.89936 0 187 34.00000 0.89936 97.4% - 0s H 27 27 24.0000000 1.00000 95.8% 43.5 0s * 33 31 19 12.0000000 1.00000 91.7% 38.9 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 807 nodes (25153 simplex iterations) in 0.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%