Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:31:58 2012 Optimize a model with 14279 rows, 4692 columns and 47190 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.47s Presolved: 14277 rows, 4690 columns, 46770 nonzeros Variable types: 0 continuous, 4690 integer (4690 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 2.000000e+00, 3454 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 136 68.00000 2.00000 97.1% - 0s H 0 0 66.0000000 2.00000 97.0% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.66667 0 2668 5.00000 2.66667 46.7% - 2s 0 0 2.66667 0 708 5.00000 2.66667 46.7% - 3s H 0 0 4.0000000 2.66667 33.3% - 3s 0 0 2.66667 0 3913 4.00000 2.66667 33.3% - 4s 0 0 2.66667 0 186 4.00000 2.66667 33.3% - 10s 0 0 2.67005 0 3546 4.00000 2.67005 33.2% - 17s 0 0 2.67005 0 3605 4.00000 2.67005 33.2% - 18s 0 0 2.67005 0 3611 4.00000 2.67005 33.2% - 21s 0 0 2.67005 0 3552 4.00000 2.67005 33.2% - 25s 0 0 2.67005 0 3550 4.00000 2.67005 33.2% - 28s 0 0 2.67005 0 3675 4.00000 2.67005 33.2% - 32s 0 0 2.67005 0 3658 4.00000 2.67005 33.2% - 35s 0 0 2.67005 0 3670 4.00000 2.67005 33.2% - 39s 0 0 2.67005 0 3674 4.00000 2.67005 33.2% - 42s 0 0 2.67005 0 3674 4.00000 2.67005 33.2% - 45s 0 2 2.80000 0 3674 4.00000 2.80000 30.0% - 58s 9 1 cutoff 2 4.00000 3.00000 25.0% 2165 62s Cutting planes: Clique: 76 Zero half: 16 Explored 11 nodes (143741 simplex iterations) in 64.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%