Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:41:10 2012 Optimize a model with 17324 rows, 5112 columns and 56800 nonzeros Presolve time: 0.13s Presolved: 17324 rows, 5112 columns, 56894 nonzeros Variable types: 0 continuous, 5112 integer (5112 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 2.000000e+00, 6813 iterations, 0.76 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 142 43.00000 2.00000 95.3% - 3s H 0 0 12.0000000 2.00000 83.3% - 3s H 0 0 5.0000000 2.00000 60.0% - 4s 0 0 2.00000 0 142 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 142 5.00000 2.00000 60.0% - 14s 0 0 2.00000 0 142 5.00000 2.00000 60.0% - 22s 0 0 2.00000 0 142 5.00000 2.00000 60.0% - 32s 0 0 2.00000 0 142 5.00000 2.00000 60.0% - 41s 0 0 2.00000 0 142 5.00000 2.00000 60.0% - 47s 0 2 2.00000 0 142 5.00000 2.00000 60.0% - 83s 1 3 3.00000 1 867 5.00000 2.00000 60.0% 41380 94s 2 4 3.00000 1 790 5.00000 3.00000 40.0% 31227 102s 6 4 3.00000 3 142 5.00000 3.00000 40.0% 11594 105s H 27 6 4.0000000 3.00000 25.0% 3185 109s 31 4 3.00000 2 136 4.00000 3.00000 25.0% 2862 111s 32 3 cutoff 3 4.00000 3.00000 25.0% 3938 124s 33 2 cutoff 3 4.00000 3.00000 25.0% 4720 135s 34 1 cutoff 4 4.00000 3.00000 25.0% 5337 144s 36 1 cutoff 5 4.00000 3.00000 25.0% 5403 147s Cutting planes: Clique: 158 Zero half: 1 Explored 38 nodes (338316 simplex iterations) in 149.85 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%