Gurobi 5.0.1 (linux64) logging started Fri Nov 16 14:39:35 2012 Optimize a model with 23324 rows, 5700 columns and 75298 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.71s Presolved: 23397 rows, 5698 columns, 80301 nonzeros Variable types: 0 continuous, 5698 integer (5698 binary) Found heuristic solution: objective 75.0000000 Root relaxation: objective 2.000000e+00, 4278 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 150 75.00000 2.00000 97.3% - 1s H 0 0 71.0000000 2.00000 97.2% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 3.00000 0 711 5.00000 3.00000 40.0% - 9s 0 0 3.01389 0 4089 5.00000 3.01389 39.7% - 21s 0 0 3.01389 0 4090 5.00000 3.01389 39.7% - 27s 0 0 3.01389 0 4035 5.00000 3.01389 39.7% - 40s 0 0 3.01389 0 4048 5.00000 3.01389 39.7% - 52s 0 0 3.01389 0 4052 5.00000 3.01389 39.7% - 64s 0 0 3.01389 0 4071 5.00000 3.01389 39.7% - 77s 0 0 3.01389 0 4069 5.00000 3.01389 39.7% - 89s 0 0 3.01389 0 4069 5.00000 3.01389 39.7% - 101s 0 2 4.00000 0 4069 5.00000 4.00000 20.0% - 121s 56 13 4.00000 9 122 5.00000 4.00000 20.0% 635 125s 112 13 4.00000 11 124 5.00000 4.00000 20.0% 370 132s 575 20 4.00000 11 128 5.00000 4.00000 20.0% 148 135s Cutting planes: Clique: 237 Zero half: 8 Explored 770 nodes (313607 simplex iterations) in 139.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%