Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:23:53 2012 Optimize a model with 4896 rows, 140 columns and 9792 nonzeros Presolve removed 3547 rows and 0 columns Presolve time: 0.19s Presolved: 1349 rows, 140 columns, 9647 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.796171e+01, 591 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.96171 0 138 7.00000 17.96171 157% - 0s H 0 0 8.0000000 17.96171 125% - 0s 0 0 17.37630 0 140 8.00000 17.37630 117% - 0s H 0 0 9.0000000 17.37630 93.1% - 0s 0 0 17.32938 0 139 9.00000 17.32938 92.5% - 0s 0 0 17.31638 0 139 9.00000 17.31638 92.4% - 0s 0 0 17.30336 0 139 9.00000 17.30336 92.3% - 1s 0 0 17.24639 0 140 9.00000 17.24639 91.6% - 1s 0 0 17.22108 0 140 9.00000 17.22108 91.3% - 1s 0 0 17.21425 0 140 9.00000 17.21425 91.3% - 1s 0 0 17.20691 0 140 9.00000 17.20691 91.2% - 1s 0 0 17.20189 0 140 9.00000 17.20189 91.1% - 2s 0 0 17.19439 0 140 9.00000 17.19439 91.0% - 2s 0 0 17.18993 0 140 9.00000 17.18993 91.0% - 2s 0 0 17.18733 0 140 9.00000 17.18733 91.0% - 2s 0 0 17.18631 0 140 9.00000 17.18631 91.0% - 2s 0 0 17.18604 0 140 9.00000 17.18604 91.0% - 3s 0 0 17.18602 0 140 9.00000 17.18602 91.0% - 3s 0 2 17.18584 0 140 9.00000 17.18584 91.0% - 3s 162 122 11.47794 19 60 9.00000 16.56298 84.0% 86.2 5s 601 310 11.44498 15 140 9.00000 13.67206 51.9% 70.9 13s 613 320 13.67206 16 138 9.00000 13.67206 51.9% 73.3 15s * 960 289 19 10.0000000 13.44140 34.4% 87.2 18s 1246 233 12.38900 28 62 10.00000 12.47562 24.8% 78.1 20s Cutting planes: Clique: 47 Explored 1508 nodes (107140 simplex iterations) in 20.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%