Gurobi 5.0.1 (linux64) logging started Thu Jan 24 18:13:19 2013 Optimize a model with 5 rows, 100 columns and 500 nonzeros Presolve time: 0.00s Presolved: 5 rows, 100 columns, 500 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 39014.000000 Root relaxation: objective 4.534707e+04, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45347.0741 0 5 39014.0000 45347.0741 16.2% - 0s H 0 0 44726.000000 45347.0741 1.39% - 0s 0 0 45327.8094 0 7 44726.0000 45327.8094 1.35% - 0s 0 0 45327.1742 0 9 44726.0000 45327.1742 1.34% - 0s H 0 0 44998.000000 45327.1742 0.73% - 0s 0 2 45325.7262 0 9 44998.0000 45325.7262 0.73% - 0s H 22 22 45018.000000 45318.5012 0.67% 2.7 0s * 1864 831 49 45029.000000 45275.9292 0.55% 2.7 0s H 4981 2543 45036.000000 45241.7447 0.46% 2.5 0s H 6566 3070 45070.000000 45233.1286 0.36% 2.5 0s H12507 4389 45090.000000 45203.8798 0.25% 2.4 0s Cutting planes: Gomory: 3 Cover: 1 MIR: 3 Zero half: 2 Explored 32201 nodes (75864 simplex iterations) in 1.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.509000000000e+04, best bound 4.509400000000e+04, gap 0.0089%