Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:22:45 2012 Optimize a model with 231 rows, 250 columns and 825 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 231 rows, 228 columns, 803 nonzeros Variable types: 0 continuous, 228 integer (227 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 153 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 0 100 37.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.32039 0 102 19.00000 0.32039 98.3% - 0s H 0 0 18.0000000 0.32039 98.2% - 0s 0 0 0.75185 0 111 18.00000 0.75185 95.8% - 0s H 0 0 17.0000000 0.75185 95.6% - 0s 0 0 0.75185 0 113 17.00000 0.75185 95.6% - 0s 0 0 0.75185 0 106 17.00000 0.75185 95.6% - 0s H 0 0 14.0000000 0.75185 94.6% - 0s H 0 0 12.0000000 0.75185 93.7% - 0s 0 2 0.76912 0 106 12.00000 0.76912 93.6% - 0s H 54 13 4.0000000 1.56076 61.0% 16.8 0s * 68 0 7 3.0000000 3.00000 0.0% 16.0 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 69 nodes (1770 simplex iterations) in 0.08 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%