Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:31 2012 Optimize a model with 85 rows, 86 columns and 296 nonzeros Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 85 rows, 82 columns, 292 nonzeros Variable types: 0 continuous, 82 integer (81 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 0.000000e+00, 48 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 37 15.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.35479 0 39 4.00000 0.35479 91.1% - 0s 0 0 0.75257 0 40 4.00000 0.75257 81.2% - 0s 0 0 0.75517 0 41 4.00000 0.75517 81.1% - 0s 0 0 0.75517 0 41 4.00000 0.75517 81.1% - 0s H 0 0 3.0000000 0.75517 74.8% - 0s 0 2 0.76271 0 41 3.00000 0.76271 74.6% - 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 12 nodes (380 simplex iterations) in 0.03 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%