Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012 Optimize a model with 187 rows, 80 columns and 374 nonzeros Presolve removed 29 rows and 4 columns Presolve time: 0.00s Presolved: 158 rows, 76 columns, 328 nonzeros Variable types: 0 continuous, 76 integer (76 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.775000e+01, 111 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37.75000 0 68 32.00000 37.75000 18.0% - 0s 0 0 37.00000 0 68 32.00000 37.00000 15.6% - 0s H 0 0 35.0000000 37.00000 5.71% - 0s 0 0 36.00000 0 50 35.00000 36.00000 2.86% - 0s 0 0 36.00000 0 57 35.00000 36.00000 2.86% - 0s 0 0 cutoff 0 35.00000 35.99996 2.86% - 0s Cutting planes: Gomory: 2 Zero half: 26 Explored 0 nodes (251 simplex iterations) in 0.01 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%