Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:40:36 2012 Optimize a model with 525 rows, 493 columns and 1803 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 525 rows, 478 columns, 1788 nonzeros Variable types: 0 continuous, 478 integer (477 binary) Found heuristic solution: objective 103.0000000 Root relaxation: objective 0.000000e+00, 272 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 194 103.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s 0 0 0.42660 0 195 58.00000 0.42660 99.3% - 0s H 0 0 51.0000000 0.42660 99.2% - 0s 0 0 1.00000 0 197 51.00000 1.00000 98.0% - 0s H 0 0 49.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 194 49.00000 1.00000 98.0% - 0s H 0 0 37.0000000 1.00000 97.3% - 0s 0 2 1.00000 0 194 37.00000 1.00000 97.3% - 0s H 27 27 26.0000000 1.38704 94.7% 48.7 0s * 49 39 29 16.0000000 1.38704 91.3% 33.4 0s * 272 98 19 15.0000000 5.00000 66.7% 29.1 0s Cutting planes: Gomory: 3 Explored 734 nodes (22749 simplex iterations) in 0.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%