Gurobi 5.0.1 (linux64) logging started Thu Dec 20 12:32:20 2012 Optimize a model with 6562 rows, 6561 columns and 29364 nonzeros Presolve removed 5976 rows and 4233 columns Presolve time: 0.08s Presolved: 586 rows, 2328 columns, 6667 nonzeros Variable types: 70 continuous, 2258 integer (2258 binary) Root relaxation: objective 5.823847e+02, 224 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 582.38471 0 75 - 582.38471 - - 0s 0 0 596.91250 0 101 - 596.91250 - - 0s 0 0 600.55696 0 98 - 600.55696 - - 0s 0 0 601.70889 0 102 - 601.70889 - - 0s 0 0 603.47143 0 79 - 603.47143 - - 0s 0 0 603.82143 0 85 - 603.82143 - - 0s 0 0 603.86429 0 85 - 603.86429 - - 0s 0 0 603.86429 0 84 - 603.86429 - - 0s 0 2 603.91429 0 83 - 603.91429 - - 0s * 382 164 18 625.0000000 606.17500 3.01% 9.5 0s H 437 59 615.0000000 606.36429 1.40% 9.4 0s Cutting planes: Learned: 10 Gomory: 4 Cover: 45 Implied bound: 63 Clique: 9 MIR: 31 GUB cover: 3 Zero half: 9 Mod-K: 4 Explored 705 nodes (7314 simplex iterations) in 1.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.150000000000e+02, best bound 6.150000000000e+02, gap 0.0%