Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012 Optimize a model with 107 rows, 48 columns and 214 nonzeros Presolve removed 48 rows and 11 columns Presolve time: 0.00s Presolved: 59 rows, 37 columns, 126 nonzeros Variable types: 0 continuous, 37 integer (37 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 2.250000e+01, 36 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22.50000 0 17 20.00000 22.50000 12.5% - 0s H 0 0 21.0000000 22.50000 7.14% - 0s H 0 0 22.0000000 22.50000 2.27% - 0s Explored 0 nodes (52 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%