Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:13:53 2012 Optimize a model with 16450 rows, 4970 columns and 54040 nonzeros Presolve time: 0.12s Presolved: 16450 rows, 4970 columns, 54157 nonzeros Variable types: 0 continuous, 4970 integer (4970 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 2.000000e+00, 9484 iterations, 2.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 140 44.00000 2.00000 95.5% - 7s H 0 0 12.0000000 2.00000 83.3% - 7s H 0 0 5.0000000 2.00000 60.0% - 7s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 13s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 21s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 29s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 38s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 44s 0 2 2.00000 0 140 5.00000 2.00000 60.0% - 67s 1 3 3.00000 1 678 5.00000 2.00000 60.0% 37617 77s 2 4 3.00000 1 862 5.00000 3.00000 40.0% 29189 85s 7 7 3.33333 4 227 5.00000 3.00000 40.0% 10038 90s 28 10 3.28571 4 299 5.00000 3.00000 40.0% 3221 99s 30 10 4.00000 5 112 5.00000 3.00000 40.0% 3089 100s 47 16 3.25000 4 479 5.00000 3.00000 40.0% 2516 108s 48 17 3.28571 4 261 5.00000 3.25000 35.0% 2679 110s H 55 5 4.0000000 3.25000 18.8% 2385 111s Cutting planes: Clique: 124 Explored 55 nodes (225975 simplex iterations) in 111.37 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%