Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:45 2012 Optimize a model with 268 rows, 73 columns and 536 nonzeros Presolve removed 71 rows and 0 columns Presolve time: 0.00s Presolved: 197 rows, 73 columns, 452 nonzeros Variable types: 0 continuous, 73 integer (73 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.066667e+01, 119 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 30.66667 0 64 26.00000 30.66667 17.9% - 0s H 0 0 28.0000000 30.66667 9.52% - 0s H 0 0 29.0000000 30.66667 5.75% - 0s 0 0 30.00000 0 70 29.00000 30.00000 3.45% - 0s 0 0 cutoff 0 29.00000 29.99997 3.45% - 0s Cutting planes: Gomory: 1 Zero half: 48 Explored 0 nodes (208 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%