Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:42 2012 Optimize a model with 1121 rows, 1190 columns and 4384 nonzeros Presolve removed 5 rows and 104 columns Presolve time: 0.06s Presolved: 1116 rows, 1086 columns, 4216 nonzeros Variable types: 0 continuous, 1086 integer (1086 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 2.000000e+00, 781 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 58 34.00000 2.00000 94.1% - 0s H 0 0 11.0000000 2.00000 81.8% - 0s H 0 0 3.0000000 2.00000 33.3% - 0s Cutting planes: Zero half: 1 Explored 0 nodes (2282 simplex iterations) in 0.09 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%