Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012 Optimize a model with 192 rows, 81 columns and 384 nonzeros Presolve removed 25 rows and 2 columns Presolve time: 0.00s Presolved: 167 rows, 79 columns, 346 nonzeros Variable types: 0 continuous, 79 integer (79 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.750000e+01, 92 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37.50000 0 53 32.00000 37.50000 17.2% - 0s H 0 0 34.0000000 37.50000 10.3% - 0s 0 0 36.33333 0 59 34.00000 36.33333 6.86% - 0s 0 0 35.58333 0 65 34.00000 35.58333 4.66% - 0s 0 0 35.25000 0 64 34.00000 35.25000 3.68% - 0s 0 0 35.23684 0 66 34.00000 35.23684 3.64% - 0s 0 0 35.23684 0 57 34.00000 35.23684 3.64% - 0s 0 2 35.23684 0 57 34.00000 35.23684 3.64% - 0s Cutting planes: Gomory: 2 Zero half: 14 Explored 3 nodes (282 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%