Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:37:00 2012 Optimize a model with 619 rows, 547 columns and 2092 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 619 rows, 531 columns, 2076 nonzeros Variable types: 0 continuous, 531 integer (530 binary) Found heuristic solution: objective 124.0000000 Root relaxation: objective 0.000000e+00, 300 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 217 124.00000 0.00000 100% - 0s H 0 0 114.0000000 0.00000 100% - 0s H 0 0 110.0000000 0.00000 100% - 0s H 0 0 106.0000000 0.00000 100% - 0s 0 0 0.44083 0 218 106.00000 0.44083 100% - 0s H 0 0 104.0000000 0.44083 100% - 0s 0 0 1.00000 0 221 104.00000 1.00000 99.0% - 0s H 0 0 88.0000000 1.00000 98.9% - 0s 0 0 1.00000 0 220 88.00000 1.00000 98.9% - 0s H 0 0 87.0000000 1.00000 98.9% - 0s H 0 0 84.0000000 1.00000 98.8% - 0s H 0 0 80.0000000 1.00000 98.8% - 0s 0 2 1.00000 0 220 80.00000 1.00000 98.8% - 0s H 27 27 60.0000000 1.00000 98.3% 60.3 0s H 40 40 44.0000000 1.00000 97.7% 46.7 0s H 54 51 30.0000000 1.00000 96.7% 39.7 0s H 81 66 29.0000000 1.00000 96.6% 37.2 0s * 767 315 29 24.0000000 10.69524 55.4% 39.3 1s Explored 2152 nodes (77635 simplex iterations) in 4.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%