Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:40 2012 Optimize a model with 186 rows, 59 columns and 372 nonzeros Presolve removed 68 rows and 4 columns Presolve time: 0.00s Presolved: 118 rows, 55 columns, 265 nonzeros Variable types: 0 continuous, 55 integer (55 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 2.366667e+01, 78 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23.66667 0 52 19.00000 23.66667 24.6% - 0s H 0 0 21.0000000 23.66667 12.7% - 0s H 0 0 22.0000000 23.66667 7.58% - 0s H 0 0 23.0000000 23.66667 2.90% - 0s Explored 0 nodes (105 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%