Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:05 2012 Optimize a model with 123 rows, 109 columns and 414 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 123 rows, 106 columns, 411 nonzeros Variable types: 0 continuous, 106 integer (105 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 66 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 42 26.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.30337 0 44 17.00000 0.30337 98.2% - 0s 0 0 0.81481 0 46 17.00000 0.81481 95.2% - 0s H 0 0 14.0000000 0.81481 94.2% - 0s 0 0 0.81481 0 46 14.00000 0.81481 94.2% - 0s H 0 0 13.0000000 0.81481 93.7% - 0s 0 2 0.88948 0 46 13.00000 0.88948 93.2% - 0s * 12 11 8 8.0000000 1.91159 76.1% 28.4 0s * 28 8 13 7.0000000 4.07441 41.8% 18.5 0s Cutting planes: Gomory: 3 Explored 41 nodes (1064 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%