Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:23:25 2012 Optimize a model with 221 rows, 248 columns and 798 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 221 rows, 223 columns, 773 nonzeros Variable types: 0 continuous, 223 integer (222 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 149 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 89 37.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.05373 0 92 17.00000 0.05373 100% - 0s H 0 0 13.0000000 0.05373 100% - 0s 0 0 0.68783 0 101 13.00000 0.68783 94.7% - 0s H 0 0 9.0000000 0.68783 92.4% - 0s 0 0 0.68783 0 104 9.00000 0.68783 92.4% - 0s 0 0 0.68783 0 97 9.00000 0.68783 92.4% - 0s H 0 0 3.0000000 0.68783 77.1% - 0s 0 2 0.69192 0 97 3.00000 0.69192 76.9% - 0s * 8 8 6 2.0000000 0.98772 50.6% 40.0 0s Cutting planes: Gomory: 4 Explored 19 nodes (1318 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%