Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:43 2012 Optimize a model with 137 rows, 84 columns and 424 nonzeros Presolve time: 0.00s Presolved: 137 rows, 84 columns, 424 nonzeros Variable types: 0 continuous, 84 integer (84 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 26 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 16 36.00000 0.00000 100% - 0s 0 0 0.66667 0 17 36.00000 0.66667 98.1% - 0s 0 0 1.48333 0 19 36.00000 1.48333 95.9% - 0s 0 0 1.51570 0 26 36.00000 1.51570 95.8% - 0s 0 0 1.55000 0 19 36.00000 1.55000 95.7% - 0s 0 0 1.63333 0 19 36.00000 1.63333 95.5% - 0s 0 0 1.63333 0 19 36.00000 1.63333 95.5% - 0s 0 0 1.63333 0 19 36.00000 1.63333 95.5% - 0s H 0 0 35.0000000 1.63333 95.3% - 0s H 0 0 30.0000000 1.63333 94.6% - 0s 0 2 1.72145 0 19 30.00000 1.72145 94.3% - 0s * 48 23 11 29.0000000 10.35000 64.3% 13.7 0s * 62 31 8 28.0000000 10.73333 61.7% 14.0 0s Cutting planes: Gomory: 2 Mod-K: 4 Explored 268 nodes (2812 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%