Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:01 2012 Optimize a model with 124 rows, 69 columns and 248 nonzeros Presolve removed 57 rows and 27 columns Presolve time: 0.00s Presolved: 67 rows, 42 columns, 135 nonzeros Variable types: 0 continuous, 42 integer (42 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.450000e+01, 50 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 34.50000 0 25 32.00000 34.50000 7.81% - 0s H 0 0 33.0000000 34.50000 4.55% - 0s 0 0 34.00000 0 24 33.00000 34.00000 3.03% - 0s 0 0 34.00000 0 18 33.00000 34.00000 3.03% - 0s 0 0 cutoff 0 33.00000 33.99997 3.03% - 0s Cutting planes: Zero half: 5 Explored 0 nodes (69 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%