Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:01:05 2012 Optimize a model with 519 rows, 484 columns and 1779 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 519 rows, 467 columns, 1762 nonzeros Variable types: 0 continuous, 467 integer (466 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 282 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 0 193 91.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s 0 0 0.38877 0 195 67.00000 0.38877 99.4% - 0s H 0 0 63.0000000 0.38877 99.4% - 0s 0 0 0.75641 0 197 63.00000 0.75641 98.8% - 0s H 0 0 46.0000000 0.75641 98.4% - 0s H 0 0 34.0000000 0.75641 97.8% - 0s 0 0 0.75713 0 202 34.00000 0.75713 97.8% - 0s 0 0 0.75713 0 201 34.00000 0.75713 97.8% - 0s 0 2 1.00000 0 201 34.00000 1.00000 97.1% - 0s H 54 45 17.0000000 1.13466 93.3% 29.1 0s H 63 32 16.0000000 1.13466 92.9% 35.5 0s * 794 158 20 14.0000000 7.79545 44.3% 34.3 1s Explored 1074 nodes (36667 simplex iterations) in 1.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%