Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:01:55 2012 Optimize a model with 24243 rows, 5852 columns and 78202 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.76s Presolved: 24317 rows, 5850 columns, 83340 nonzeros Variable types: 0 continuous, 5850 integer (5850 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 2.000000e+00, 3997 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 152 76.00000 2.00000 97.4% - 1s H 0 0 67.0000000 2.00000 97.0% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 3.00000 0 3535 5.00000 3.00000 40.0% - 25s 0 0 3.00680 0 4192 5.00000 3.00680 39.9% - 31s 0 0 3.00680 0 4209 5.00000 3.00680 39.9% - 36s 0 0 3.00680 0 4217 5.00000 3.00680 39.9% - 50s 0 0 3.00680 0 4214 5.00000 3.00680 39.9% - 63s 0 0 3.00680 0 4213 5.00000 3.00680 39.9% - 76s 0 0 3.00680 0 4213 5.00000 3.00680 39.9% - 88s 0 0 3.00680 0 4213 5.00000 3.00680 39.9% - 100s 0 2 3.50000 0 4213 5.00000 3.50000 30.0% - 138s 2 2 4.00000 1 136 5.00000 4.00000 20.0% 18298 142s 24 16 cutoff 20 5.00000 4.00000 20.0% 2358 145s 90 20 cutoff 16 5.00000 4.00000 20.0% 959 150s 349 25 cutoff 15 5.00000 4.00000 20.0% 401 155s 811 56 4.00000 14 4213 5.00000 4.00000 20.0% 261 162s 832 68 4.00000 17 169 5.00000 4.00000 20.0% 272 165s Cutting planes: Gomory: 1 Clique: 1 Zero half: 4 Explored 861 nodes (439844 simplex iterations) in 165.57 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%