Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:55:57 2012 Optimize a model with 14160 rows, 6480 columns and 48640 nonzeros Presolve removed 1680 rows and 0 columns Presolve time: 0.32s Presolved: 12480 rows, 6480 columns, 44560 nonzeros Variable types: 0 continuous, 6480 integer (6480 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 3.000000e+00, 13874 iterations, 3.47 seconds Total elapsed time = 5.80s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 137 45.00000 3.00000 93.3% - 7s H 0 0 6.0000000 3.00000 50.0% - 7s H 0 0 5.0000000 3.00000 40.0% - 7s 0 0 3.00000 0 112 5.00000 3.00000 40.0% - 8s 0 0 3.00000 0 429 5.00000 3.00000 40.0% - 10s 0 0 3.00000 0 107 5.00000 3.00000 40.0% - 14s H 0 0 4.0000000 3.00000 25.0% - 14s H 0 0 3.0000000 3.00000 0.0% - 14s Cutting planes: Zero half: 1 Explored 0 nodes (66544 simplex iterations) in 14.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%