Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012 Optimize a model with 176 rows, 80 columns and 352 nonzeros Presolve removed 64 rows and 16 columns Presolve time: 0.00s Presolved: 112 rows, 64 columns, 235 nonzeros Variable types: 0 continuous, 64 integer (64 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.625000e+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 36.25000 0 61 32.00000 36.25000 13.3% - 0s H 0 0 33.0000000 36.25000 9.85% - 0s H 0 0 34.0000000 36.25000 6.62% - 0s 0 0 36.00000 0 38 34.00000 36.00000 5.88% - 0s 0 0 36.00000 0 61 34.00000 36.00000 5.88% - 0s H 0 0 35.0000000 36.00000 2.86% - 0s 0 0 cutoff 0 35.00000 35.99996 2.86% - 0s Cutting planes: Gomory: 1 Zero half: 19 Explored 0 nodes (158 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%