Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:44:41 2012 Optimize a model with 479 rows, 460 columns and 1655 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 479 rows, 434 columns, 1629 nonzeros Variable types: 0 continuous, 434 integer (433 binary) Found heuristic solution: objective 102.0000000 Root relaxation: objective 0.000000e+00, 250 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 0 187 102.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.32453 0 189 59.00000 0.32453 99.4% - 0s H 0 0 54.0000000 0.32453 99.4% - 0s H 0 0 52.0000000 0.32453 99.4% - 0s 0 0 0.88458 0 192 52.00000 0.88458 98.3% - 0s H 0 0 43.0000000 0.88458 97.9% - 0s 0 0 0.88480 0 195 43.00000 0.88480 97.9% - 0s 0 0 0.88480 0 194 43.00000 0.88480 97.9% - 0s H 0 0 32.0000000 0.88480 97.2% - 0s H 0 0 31.0000000 0.88480 97.1% - 0s 0 2 0.88521 0 194 31.00000 0.88521 97.1% - 0s * 49 31 29 16.0000000 0.92230 94.2% 30.5 0s * 88 43 25 15.0000000 1.00000 93.3% 29.1 0s * 249 89 8 14.0000000 3.92593 72.0% 34.9 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 635 nodes (23573 simplex iterations) in 0.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%