Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:09 2012 Optimize a model with 244 rows, 98 columns and 488 nonzeros Presolve removed 70 rows and 13 columns Presolve time: 0.00s Presolved: 174 rows, 85 columns, 369 nonzeros Variable types: 0 continuous, 85 integer (85 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 4.412500e+01, 120 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.12500 0 78 38.00000 44.12500 16.1% - 0s H 0 0 41.0000000 44.12500 7.62% - 0s 0 0 43.00000 0 81 41.00000 43.00000 4.88% - 0s H 0 0 42.0000000 43.00000 2.38% - 0s 0 0 cutoff 0 42.00000 42.99996 2.38% - 0s Cutting planes: Zero half: 35 Explored 0 nodes (200 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%