Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:20:00 2012 Optimize a model with 16517 rows, 6972 columns and 56191 nonzeros Presolve time: 0.13s Presolved: 16517 rows, 6972 columns, 56246 nonzeros Variable types: 0 continuous, 6972 integer (6972 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 2.000000e+00, 6283 iterations, 0.28 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 166 51.00000 2.00000 96.1% - 1s H 0 0 12.0000000 2.00000 83.3% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 166 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 166 5.00000 2.00000 60.0% - 19s 0 0 2.00000 0 166 5.00000 2.00000 60.0% - 30s 0 0 2.00000 0 166 5.00000 2.00000 60.0% - 42s H 0 0 4.0000000 2.00000 50.0% - 42s 0 0 2.00000 0 166 4.00000 2.00000 50.0% - 54s 0 0 2.00000 0 166 4.00000 2.00000 50.0% - 64s 0 2 2.00000 0 166 4.00000 2.00000 50.0% - 96s 1 3 3.00000 1 1292 4.00000 2.00000 50.0% 53648 113s 2 4 3.00000 1 881 4.00000 3.00000 25.0% 42208 125s 83 13 3.00000 8 142 4.00000 3.00000 25.0% 1234 130s 161 3 infeasible 3 4.00000 3.00000 25.0% 753 135s 171 5 cutoff 9 4.00000 3.00000 25.0% 803 140s 180 4 cutoff 9 4.00000 3.00000 25.0% 906 145s 192 4 3.00000 4 144 4.00000 3.00000 25.0% 908 150s 208 4 cutoff 9 4.00000 3.00000 25.0% 979 155s 221 5 cutoff 8 4.00000 3.00000 25.0% 1021 160s 232 6 cutoff 11 4.00000 3.00000 25.0% 1079 165s 244 2 cutoff 8 4.00000 3.00000 25.0% 1141 170s 259 7 cutoff 11 4.00000 3.00000 25.0% 1167 175s 270 10 cutoff 12 4.00000 3.00000 25.0% 1203 180s 281 9 3.00000 8 120 4.00000 3.00000 25.0% 1233 186s 293 7 cutoff 10 4.00000 3.00000 25.0% 1253 190s 306 8 cutoff 11 4.00000 3.00000 25.0% 1291 195s 314 6 cutoff 9 4.00000 3.00000 25.0% 1342 201s 320 6 cutoff 11 4.00000 3.00000 25.0% 1397 207s 323 5 cutoff 8 4.00000 3.00000 25.0% 1429 210s 336 8 3.00000 11 104 4.00000 3.00000 25.0% 1445 215s 346 4 cutoff 10 4.00000 3.00000 25.0% 1478 220s 364 2 cutoff 9 4.00000 3.00000 25.0% 1492 225s Cutting planes: Clique: 87 Zero half: 4 Explored 375 nodes (720847 simplex iterations) in 229.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%