Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:21:05 2012 Optimize a model with 381 rows, 280 columns and 1230 nonzeros Presolve time: 0.00s Presolved: 381 rows, 280 columns, 1230 nonzeros Variable types: 0 continuous, 280 integer (280 binary) Found heuristic solution: objective 96.0000000 Found heuristic solution: objective 83.0000000 Root relaxation: objective 0.000000e+00, 130 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 90 83.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s 0 0 0.74324 0 92 68.00000 0.74324 98.9% - 0s H 0 0 65.0000000 0.74324 98.9% - 0s 0 0 0.90541 0 92 65.00000 0.90541 98.6% - 0s H 0 0 63.0000000 0.90541 98.6% - 0s 0 0 0.93694 0 92 63.00000 0.93694 98.5% - 0s H 0 0 62.0000000 0.93694 98.5% - 0s 0 0 0.93694 0 92 62.00000 0.93694 98.5% - 0s 0 0 0.93694 0 92 62.00000 0.93694 98.5% - 0s 0 2 0.93694 0 92 62.00000 0.93694 98.5% - 0s H 27 27 49.0000000 3.30370 93.3% 39.9 0s * 40 32 26 38.0000000 3.30370 91.3% 31.1 0s * 67 45 17 34.0000000 3.33382 90.2% 31.0 0s * 1028 335 31 33.0000000 17.18519 47.9% 28.4 1s 5464 247 31.33333 22 105 33.00000 27.20968 17.5% 21.0 5s * 6097 85 24 32.0000000 29.53846 7.69% 20.6 5s Explored 6195 nodes (127485 simplex iterations) in 5.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%