Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:56 2012 Optimize a model with 93 rows, 93 columns and 323 nonzeros Presolve removed 0 rows and 6 columns Presolve time: 0.00s Presolved: 93 rows, 87 columns, 317 nonzeros Variable types: 0 continuous, 87 integer (86 binary) Found heuristic solution: objective 19.0000000 Found heuristic solution: objective 17.0000000 Root relaxation: objective 0.000000e+00, 56 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 40 17.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.27869 0 42 4.00000 0.27869 93.0% - 0s 0 0 0.81954 0 50 4.00000 0.81954 79.5% - 0s H 0 0 3.0000000 0.81954 72.7% - 0s 0 0 0.82066 0 50 3.00000 0.82066 72.6% - 0s 0 0 0.82066 0 50 3.00000 0.82066 72.6% - 0s 0 2 0.83876 0 50 3.00000 0.83876 72.0% - 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 7 nodes (395 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%