Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:22 2012 Optimize a model with 279 rows, 312 columns and 1007 nonzeros Presolve removed 0 rows and 39 columns Presolve time: 0.00s Presolved: 279 rows, 273 columns, 968 nonzeros Variable types: 0 continuous, 273 integer (272 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 187 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 0 119 36.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.11354 0 121 31.00000 0.11354 100% - 0s H 0 0 27.0000000 0.11354 100% - 0s H 0 0 25.0000000 0.11354 100% - 0s 0 0 0.72137 0 128 25.00000 0.72137 97.1% - 0s H 0 0 22.0000000 0.72137 96.7% - 0s 0 0 0.72137 0 128 22.00000 0.72137 96.7% - 0s H 0 0 18.0000000 0.72137 96.0% - 0s H 0 0 14.0000000 0.72137 94.8% - 0s H 0 0 12.0000000 0.72137 94.0% - 0s H 0 0 7.0000000 0.72137 89.7% - 0s 0 2 0.74929 0 128 7.00000 0.74929 89.3% - 0s * 25 9 18 3.0000000 1.00000 66.7% 21.8 0s Cutting planes: Gomory: 4 Explored 53 nodes (1713 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%