Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:40:34 2012 Optimize a model with 519 rows, 490 columns and 1785 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 519 rows, 466 columns, 1761 nonzeros Variable types: 0 continuous, 466 integer (465 binary) Found heuristic solution: objective 99.0000000 Root relaxation: objective 0.000000e+00, 259 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 0 198 99.00000 0.00000 100% - 0s H 0 0 81.0000000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s 0 0 0.45051 0 199 66.00000 0.45051 99.3% - 0s H 0 0 58.0000000 0.45051 99.2% - 0s H 0 0 55.0000000 0.45051 99.2% - 0s 0 0 1.00000 0 200 55.00000 1.00000 98.2% - 0s H 0 0 48.0000000 1.00000 97.9% - 0s 0 0 1.07482 0 202 48.00000 1.07482 97.8% - 0s H 0 0 37.0000000 1.07482 97.1% - 0s 0 0 1.09803 0 207 37.00000 1.09803 97.0% - 0s H 0 0 30.0000000 1.09803 96.3% - 0s 0 0 1.09803 0 206 30.00000 1.09803 96.3% - 0s 0 2 1.09872 0 206 30.00000 1.09872 96.3% - 0s H 48 38 18.0000000 1.33781 92.6% 28.2 0s H 78 47 16.0000000 1.40424 91.2% 31.4 0s * 261 115 9 15.0000000 4.70026 68.7% 34.6 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 961 nodes (31799 simplex iterations) in 1.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%