Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:26:20 2012 Optimize a model with 525 rows, 491 columns and 1801 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 525 rows, 472 columns, 1782 nonzeros Variable types: 0 continuous, 472 integer (471 binary) Found heuristic solution: objective 90.0000000 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 0 201 90.00000 0.00000 100% - 0s H 0 0 81.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.36449 0 204 65.00000 0.36449 99.4% - 0s H 0 0 46.0000000 0.36449 99.2% - 0s 0 0 0.68245 0 207 46.00000 0.68245 98.5% - 0s H 0 0 42.0000000 0.68245 98.4% - 0s 0 0 0.68281 0 209 42.00000 0.68281 98.4% - 0s 0 0 0.68281 0 209 42.00000 0.68281 98.4% - 0s H 0 0 41.0000000 0.68281 98.3% - 0s 0 2 0.68390 0 209 41.00000 0.68390 98.3% - 0s H 27 27 33.0000000 1.60123 95.1% 44.9 0s H 54 38 19.0000000 1.60123 91.6% 30.6 0s * 250 113 15 18.0000000 5.55556 69.1% 33.4 0s * 275 113 16 17.0000000 5.72028 66.4% 32.9 0s Cutting planes: Gomory: 2 Zero half: 2 Mod-K: 1 Explored 1079 nodes (38678 simplex iterations) in 1.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%