Gurobi 5.0.1 (linux64) logging started Thu Jan 24 18:17:35 2013 Optimize a model with 5 rows, 250 columns and 1250 nonzeros Presolve time: 0.00s Presolved: 5 rows, 250 columns, 1250 nonzeros Variable types: 0 continuous, 250 integer (250 binary) Found heuristic solution: objective 52532.000000 Root relaxation: objective 6.163840e+04, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61638.3996 0 5 52532.0000 61638.3996 17.3% - 0s H 0 0 60967.000000 61638.3996 1.10% - 0s 0 0 61634.4971 0 6 60967.0000 61634.4971 1.09% - 0s 0 0 61634.0140 0 8 60967.0000 61634.0140 1.09% - 0s H 0 0 61349.000000 61634.0140 0.46% - 0s 0 0 61634.0140 0 5 61349.0000 61634.0140 0.46% - 0s 0 0 61634.0140 0 6 61349.0000 61634.0140 0.46% - 0s 0 0 61634.0140 0 8 61349.0000 61634.0140 0.46% - 0s 0 2 61633.9881 0 8 61349.0000 61633.9881 0.46% - 0s H 57 56 61419.000000 61630.9782 0.35% 1.9 0s H 758 533 61440.000000 61620.6413 0.29% 2.4 0s H 870 556 61449.000000 61618.3701 0.28% 2.6 0s H32694 13984 61472.000000 61578.1134 0.17% 2.3 1s 92777 27306 61505.0876 60 5 61472.0000 61559.1047 0.14% 2.4 5s 199893 54895 61498.4243 57 5 61472.0000 61537.1241 0.11% 2.4 10s 312366 63084 61486.2211 52 5 61472.0000 61523.2279 0.08% 2.3 15s 426634 52865 cutoff 58 61472.0000 61510.3710 0.06% 2.3 20s 543862 10127 61475.2290 53 5 61472.0000 61484.8367 0.02% 2.3 25s Cutting planes: Gomory: 3 Cover: 2 MIR: 8 Zero half: 1 Explored 551487 nodes (1252243 simplex iterations) in 25.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.147200000000e+04, best bound 6.147800000000e+04, gap 0.0098%