Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:52 2012 Optimize a model with 163 rows, 98 columns and 503 nonzeros Presolve time: 0.00s Presolved: 163 rows, 98 columns, 503 nonzeros Variable types: 0 continuous, 98 integer (98 binary) Found heuristic solution: objective 44.0000000 Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 26 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 17 41.00000 0.00000 100% - 0s 0 0 1.14706 0 19 41.00000 1.14706 97.2% - 0s H 0 0 40.0000000 1.14706 97.1% - 0s 0 0 1.21978 0 28 40.00000 1.21978 97.0% - 0s 0 0 1.32353 0 19 40.00000 1.32353 96.7% - 0s 0 0 1.32353 0 19 40.00000 1.32353 96.7% - 0s 0 0 1.32353 0 19 40.00000 1.32353 96.7% - 0s 0 0 1.32353 0 19 40.00000 1.32353 96.7% - 0s H 0 0 38.0000000 1.32353 96.5% - 0s H 0 0 37.0000000 1.32353 96.4% - 0s 0 2 1.39091 0 19 37.00000 1.39091 96.2% - 0s * 52 28 9 36.0000000 12.14286 66.3% 15.4 0s H 54 25 35.0000000 12.14286 65.3% 14.9 0s H 81 42 34.0000000 18.00000 47.1% 15.4 0s * 179 42 9 32.0000000 21.50000 32.8% 12.7 0s * 261 29 7 31.0000000 24.00000 22.6% 11.9 0s * 267 22 8 30.0000000 25.00000 16.7% 11.9 0s Cutting planes: Gomory: 1 Mod-K: 6 Explored 301 nodes (3593 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%