Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012 Optimize a model with 204 rows, 84 columns and 408 nonzeros Presolve removed 37 rows and 7 columns Presolve time: 0.00s Presolved: 167 rows, 77 columns, 354 nonzeros Variable types: 0 continuous, 77 integer (77 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.900000e+01, 105 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 39.00000 0 64 32.00000 39.00000 21.9% - 0s H 0 0 34.0000000 39.00000 14.7% - 0s 0 0 38.18182 0 74 34.00000 38.18182 12.3% - 0s H 0 0 35.0000000 38.18182 9.09% - 0s H 0 0 36.0000000 38.18182 6.06% - 0s 0 0 37.50000 0 59 36.00000 37.50000 4.17% - 0s 0 0 37.33333 0 72 36.00000 37.33333 3.70% - 0s 0 0 37.22727 0 77 36.00000 37.22727 3.41% - 0s 0 0 cutoff 0 36.00000 36.99996 2.78% - 0s Cutting planes: Gomory: 1 Zero half: 37 Explored 0 nodes (262 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%