Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:50:56 2012 Optimize a model with 17786 rows, 21756 columns and 74380 nonzeros Presolve removed 29 rows and 3971 columns Presolve time: 0.34s Presolved: 17757 rows, 17785 columns, 70169 nonzeros Variable types: 0 continuous, 17785 integer (17785 binary) Found heuristic solution: objective 147.0000000 Root relaxation: objective 2.000000e+00, 13410 iterations, 0.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 212 147.00000 2.00000 98.6% - 2s H 0 0 144.0000000 2.00000 98.6% - 2s H 0 0 3.0000000 2.00000 33.3% - 2s Cutting planes: Gomory: 1 Explored 0 nodes (44762 simplex iterations) in 2.30 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%