Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012 Optimize a model with 187 rows, 79 columns and 374 nonzeros Presolve removed 55 rows and 11 columns Presolve time: 0.00s Presolved: 132 rows, 68 columns, 278 nonzeros Variable types: 0 continuous, 68 integer (68 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 3.600000e+01, 93 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36.00000 0 61 33.00000 36.00000 9.09% - 0s H 0 0 34.0000000 36.00000 5.88% - 0s 0 0 35.60000 0 64 34.00000 35.60000 4.71% - 0s 0 0 35.00000 0 60 34.00000 35.00000 2.94% - 0s 0 0 35.00000 0 16 34.00000 35.00000 2.94% - 0s H 0 0 35.0000000 35.00000 0.0% - 0s Cutting planes: Gomory: 1 Zero half: 5 Explored 0 nodes (180 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%