Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:12:13 2012 Optimize a model with 587 rows, 528 columns and 1993 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 587 rows, 511 columns, 1976 nonzeros Variable types: 0 continuous, 511 integer (510 binary) Found heuristic solution: objective 106.0000000 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 0 215 106.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s 0 0 0.42259 0 217 73.00000 0.42259 99.4% - 0s H 0 0 48.0000000 0.42259 99.1% - 0s H 0 0 47.0000000 0.42259 99.1% - 0s 0 0 0.76826 0 219 47.00000 0.76826 98.4% - 0s H 0 0 45.0000000 0.76826 98.3% - 0s 0 0 0.80080 0 220 45.00000 0.80080 98.2% - 0s H 0 0 43.0000000 0.80080 98.1% - 0s 0 0 0.80080 0 220 43.00000 0.80080 98.1% - 0s 0 2 0.80101 0 220 43.00000 0.80101 98.1% - 0s H 27 27 42.0000000 1.00000 97.6% 43.1 0s H 54 54 36.0000000 1.00000 97.2% 36.9 0s * 74 66 45 28.0000000 1.00000 96.4% 29.7 0s H 108 82 27.0000000 1.00000 96.3% 31.4 0s * 118 71 25 25.0000000 1.00000 96.0% 32.2 0s H 1100 413 24.0000000 7.13333 70.3% 40.0 2s 2526 685 15.62887 21 221 24.00000 12.75258 46.9% 34.5 5s 5522 987 22.42857 24 230 24.00000 16.05128 33.1% 30.9 10s 8809 940 21.46893 24 217 24.00000 17.88889 25.5% 29.9 15s 12266 388 cutoff 27 24.00000 20.37097 15.1% 29.8 20s Explored 13001 nodes (385229 simplex iterations) in 20.81 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%