Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012 Optimize a model with 194 rows, 82 columns and 388 nonzeros Presolve removed 58 rows and 12 columns Presolve time: 0.00s Presolved: 136 rows, 70 columns, 280 nonzeros Variable types: 0 continuous, 70 integer (70 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.725000e+01, 92 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37.25000 0 55 30.00000 37.25000 24.2% - 0s H 0 0 33.0000000 37.25000 12.9% - 0s 0 0 36.75000 0 57 33.00000 36.75000 11.4% - 0s H 0 0 34.0000000 36.75000 8.09% - 0s 0 0 36.41667 0 68 34.00000 36.41667 7.11% - 0s 0 0 35.88889 0 62 34.00000 35.88889 5.56% - 0s 0 0 35.60000 0 68 34.00000 35.60000 4.71% - 0s 0 0 35.53333 0 69 34.00000 35.53333 4.51% - 0s 0 0 35.33333 0 62 34.00000 35.33333 3.92% - 0s 0 0 35.32143 0 70 34.00000 35.32143 3.89% - 0s 0 0 35.32143 0 69 34.00000 35.32143 3.89% - 0s 0 2 35.29412 0 67 34.00000 35.29412 3.81% - 0s * 2 2 2 35.0000000 35.27273 0.78% 18.0 0s Cutting planes: Gomory: 1 Zero half: 18 Explored 3 nodes (317 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%