Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012 Optimize a model with 192 rows, 84 columns and 384 nonzeros Presolve removed 41 rows and 10 columns Presolve time: 0.00s Presolved: 151 rows, 74 columns, 314 nonzeros Variable types: 0 continuous, 74 integer (74 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 4.000000e+01, 106 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.00000 0 56 35.00000 40.00000 14.3% - 0s H 0 0 36.0000000 40.00000 11.1% - 0s 0 0 39.00000 0 70 36.00000 39.00000 8.33% - 0s H 0 0 38.0000000 39.00000 2.63% - 0s 0 0 cutoff 0 38.00000 38.99996 2.63% - 0s Cutting planes: Gomory: 1 Zero half: 27 Explored 0 nodes (219 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%