Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012 Optimize a model with 110 rows, 46 columns and 220 nonzeros Presolve removed 22 rows and 0 columns Presolve time: 0.00s Presolved: 88 rows, 46 columns, 192 nonzeros Variable types: 0 continuous, 46 integer (46 binary) Found heuristic solution: objective 18.0000000 Root relaxation: objective 2.025000e+01, 58 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 20.25000 0 37 18.00000 20.25000 12.5% - 0s H 0 0 19.0000000 20.25000 6.58% - 0s H 0 0 20.0000000 20.25000 1.25% - 0s Explored 0 nodes (72 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%