Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:42:02 2012 Optimize a model with 493 rows, 466 columns and 1696 nonzeros Presolve removed 0 rows and 13 columns Presolve time: 0.00s Presolved: 493 rows, 453 columns, 1683 nonzeros Variable types: 0 continuous, 453 integer (452 binary) Found heuristic solution: objective 106.0000000 Root relaxation: objective 0.000000e+00, 257 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 0 200 106.00000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.42745 0 201 62.00000 0.42745 99.3% - 0s H 0 0 55.0000000 0.42745 99.2% - 0s 0 0 0.80956 0 205 55.00000 0.80956 98.5% - 0s H 0 0 49.0000000 0.80956 98.3% - 0s 0 0 0.80986 0 207 49.00000 0.80986 98.3% - 0s 0 0 0.80986 0 206 49.00000 0.80986 98.3% - 0s H 0 0 45.0000000 0.80986 98.2% - 0s H 0 0 41.0000000 0.80986 98.0% - 0s H 0 0 40.0000000 0.80986 98.0% - 0s 0 2 0.81428 0 206 40.00000 0.81428 98.0% - 0s H 27 27 14.0000000 1.00000 92.9% 50.5 0s * 32 23 21 13.0000000 1.00000 92.3% 49.8 0s * 431 78 14 12.0000000 6.55128 45.4% 34.9 0s Cutting planes: Gomory: 2 Mod-K: 2 Explored 664 nodes (23657 simplex iterations) in 0.96 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%