Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:58:09 2012 Optimize a model with 7564 rows, 992 columns and 23560 nonzeros Presolve time: 0.06s Presolved: 7564 rows, 992 columns, 30473 nonzeros Variable types: 0 continuous, 992 integer (992 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 2.000000e+00, 2441 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 62 21.00000 2.00000 90.5% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 2 2.00000 0 62 9.00000 2.00000 77.8% - 1s * 45 23 26 8.0000000 3.00000 62.5% 434 4s 56 34 5.50000 8 57 8.00000 3.00000 62.5% 463 5s 215 123 6.50000 10 49 8.00000 4.00000 50.0% 301 10s 452 192 5.50000 7 99 8.00000 4.75000 40.6% 221 15s 603 238 6.00000 4 147 8.00000 6.00000 25.0% 194 20s 605 240 6.20000 13 129 8.00000 6.00000 25.0% 194 25s 608 244 6.50000 14 156 8.00000 6.00000 25.0% 228 31s 613 247 6.50000 17 123 8.00000 6.00000 25.0% 237 35s 642 246 6.50000 18 150 8.00000 6.00000 25.0% 252 40s 700 254 6.41860 23 164 8.00000 6.17742 22.8% 270 45s 746 259 6.69000 26 147 8.00000 6.19149 22.6% 293 50s 845 235 6.45238 24 131 8.00000 6.40741 19.9% 296 55s 931 212 7.00000 26 91 8.00000 6.50000 18.7% 308 60s 1048 208 6.75000 21 106 8.00000 6.50000 18.7% 299 65s 1103 209 6.50000 20 123 8.00000 6.50000 18.7% 292 70s 1175 205 6.66667 17 148 8.00000 6.50000 18.7% 282 75s 1404 196 cutoff 27 8.00000 6.50000 18.7% 271 80s 1635 249 6.53846 23 126 8.00000 6.50000 18.7% 262 85s 1776 280 6.71429 21 104 8.00000 6.51852 18.5% 261 90s 1897 296 7.00000 26 106 8.00000 6.59091 17.6% 261 95s 1980 301 7.00000 25 107 8.00000 6.66667 16.7% 269 100s 2245 324 7.00000 24 88 8.00000 6.71429 16.1% 255 107s 2397 332 7.00000 23 78 8.00000 6.75000 15.6% 251 110s 2724 269 cutoff 29 8.00000 7.00000 12.5% 243 115s 3037 227 cutoff 31 8.00000 7.00000 12.5% 237 120s 3328 205 cutoff 31 8.00000 7.00000 12.5% 232 125s 3732 163 7.00000 23 85 8.00000 7.00000 12.5% 223 130s 3951 158 7.00000 27 86 8.00000 7.00000 12.5% 221 135s 4480 129 7.00000 21 109 8.00000 7.00000 12.5% 209 140s 4612 116 7.00000 23 85 8.00000 7.00000 12.5% 213 147s 4954 105 7.00000 24 98 8.00000 7.00000 12.5% 206 150s 5234 109 7.00000 27 93 8.00000 7.00000 12.5% 208 155s 5296 107 7.00000 27 89 8.00000 7.00000 12.5% 208 164s 5405 105 7.00000 27 65 8.00000 7.00000 12.5% 205 165s 5800 73 7.00000 26 100 8.00000 7.00000 12.5% 203 170s 6108 56 cutoff 27 8.00000 7.00000 12.5% 201 175s 6450 45 cutoff 26 8.00000 7.00000 12.5% 200 180s 6698 41 7.00000 27 67 8.00000 7.00000 12.5% 201 185s 6804 48 7.00000 27 75 8.00000 7.00000 12.5% 205 190s 6948 46 7.00000 26 83 8.00000 7.00000 12.5% 207 195s 7029 39 7.00000 24 71 8.00000 7.00000 12.5% 211 200s 7125 41 cutoff 30 8.00000 7.00000 12.5% 215 205s 7209 28 cutoff 24 8.00000 7.00000 12.5% 219 210s 7320 18 cutoff 32 8.00000 7.00000 12.5% 221 215s 7481 7 cutoff 27 8.00000 7.00000 12.5% 224 220s 7563 9 7.00000 25 78 8.00000 7.00000 12.5% 227 225s Explored 7643 nodes (1751652 simplex iterations) in 228.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%