Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012 Optimize a model with 144 rows, 78 columns and 288 nonzeros Presolve removed 62 rows and 29 columns Presolve time: 0.00s Presolved: 82 rows, 49 columns, 167 nonzeros Variable types: 0 continuous, 49 integer (49 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 3.800000e+01, 57 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38.00000 0 44 34.00000 38.00000 11.8% - 0s H 0 0 35.0000000 38.00000 8.57% - 0s 0 0 37.50000 0 33 35.00000 37.50000 7.14% - 0s H 0 0 36.0000000 37.50000 4.17% - 0s 0 0 cutoff 0 36.00000 36.99996 2.78% - 0s Cutting planes: Zero half: 9 Explored 0 nodes (115 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%