Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:32:25 2012 Optimize a model with 541 rows, 488 columns and 1838 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 541 rows, 472 columns, 1822 nonzeros Variable types: 0 continuous, 472 integer (471 binary) Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 294 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 0 197 96.00000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s 0 0 0.35151 0 199 74.00000 0.35151 100% - 0s H 0 0 67.0000000 0.35151 99.5% - 0s 0 0 0.96313 0 202 67.00000 0.96313 98.6% - 0s H 0 0 57.0000000 0.96313 98.3% - 0s H 0 0 51.0000000 0.96313 98.1% - 0s 0 0 0.96444 0 202 51.00000 0.96444 98.1% - 0s 0 0 0.96444 0 202 51.00000 0.96444 98.1% - 0s H 0 0 37.0000000 0.96444 97.4% - 0s 0 2 0.99891 0 202 37.00000 0.99891 97.3% - 0s H 27 27 31.0000000 1.33082 95.7% 44.3 0s H 54 54 29.0000000 1.33082 95.4% 30.4 0s * 96 54 71 24.0000000 1.33082 94.5% 21.1 0s H 215 103 22.0000000 2.88235 86.9% 27.9 0s * 1779 292 32 21.0000000 13.25000 36.9% 29.3 2s 2965 144 cutoff 23 21.00000 17.17431 18.2% 28.5 5s Explored 3270 nodes (91751 simplex iterations) in 5.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%