Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:40 2012 Optimize a model with 157 rows, 59 columns and 314 nonzeros Presolve removed 75 rows and 14 columns Presolve time: 0.00s Presolved: 82 rows, 45 columns, 173 nonzeros Variable types: 0 continuous, 45 integer (45 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 2.600000e+01, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 26.00000 0 40 24.00000 26.00000 8.33% - 0s 0 0 25.50000 0 33 24.00000 25.50000 6.25% - 0s H 0 0 25.0000000 25.50000 2.00% - 0s Cutting planes: Zero half: 3 Explored 0 nodes (92 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%