Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:15 2012 Optimize a model with 462 rows, 99 columns and 924 nonzeros Presolve removed 156 rows and 0 columns Presolve time: 0.00s Presolved: 306 rows, 99 columns, 742 nonzeros Variable types: 0 continuous, 99 integer (99 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.708571e+01, 176 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37.08571 0 95 29.00000 37.08571 27.9% - 0s H 0 0 31.0000000 37.08571 19.6% - 0s 0 0 36.41356 0 95 31.00000 36.41356 17.5% - 0s 0 0 36.07385 0 95 31.00000 36.07385 16.4% - 0s H 0 0 32.0000000 36.07385 12.7% - 0s 0 0 35.97305 0 95 32.00000 35.97305 12.4% - 0s 0 0 35.85913 0 96 32.00000 35.85913 12.1% - 0s 0 0 35.72932 0 94 32.00000 35.72932 11.7% - 0s 0 0 35.60586 0 95 32.00000 35.60586 11.3% - 0s 0 0 35.53273 0 94 32.00000 35.53273 11.0% - 0s 0 0 35.48882 0 95 32.00000 35.48882 10.9% - 0s 0 0 35.44830 0 93 32.00000 35.44830 10.8% - 0s 0 0 35.39689 0 95 32.00000 35.39689 10.6% - 0s 0 0 35.36910 0 95 32.00000 35.36910 10.5% - 0s 0 0 35.35338 0 95 32.00000 35.35338 10.5% - 0s 0 0 35.35338 0 95 32.00000 35.35338 10.5% - 0s 0 2 35.35282 0 95 32.00000 35.35282 10.5% - 0s H 25 5 33.0000000 34.59086 4.82% 32.4 0s Cutting planes: Zero half: 49 Explored 35 nodes (1644 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%