Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:30:38 2012 Optimize a model with 9074 rows, 14762 columns and 41380 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.16s Presolved: 9193 rows, 14760 columns, 55871 nonzeros Variable types: 0 continuous, 14760 integer (14760 binary) Found heuristic solution: objective 121.0000000 Root relaxation: objective 2.000000e+00, 5907 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 68 121.00000 2.00000 98.3% - 0s H 0 0 118.0000000 2.00000 98.3% - 0s H 0 0 3.0000000 2.00000 33.3% - 0s Cutting planes: Zero half: 1 Explored 0 nodes (18815 simplex iterations) in 0.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%