Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:29 2012 Optimize a model with 565 rows, 102 columns and 1130 nonzeros Presolve removed 207 rows and 0 columns Presolve time: 0.00s Presolved: 358 rows, 102 columns, 918 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.563636e+01, 226 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35.63636 0 100 26.00000 35.63636 37.1% - 0s 0 0 34.99642 0 100 26.00000 34.99642 34.6% - 0s 0 0 34.66839 0 99 26.00000 34.66839 33.3% - 0s 0 0 34.48197 0 101 26.00000 34.48197 32.6% - 0s H 0 0 27.0000000 34.48197 27.7% - 0s 0 0 34.38377 0 102 27.00000 34.38377 27.3% - 0s 0 0 34.29925 0 102 27.00000 34.29925 27.0% - 0s H 0 0 28.0000000 34.29925 22.5% - 0s 0 0 34.18712 0 102 28.00000 34.18712 22.1% - 0s 0 0 34.11994 0 100 28.00000 34.11994 21.9% - 0s 0 0 34.11263 0 102 28.00000 34.11263 21.8% - 0s 0 0 34.11263 0 102 28.00000 34.11263 21.8% - 0s 0 2 34.11263 0 102 28.00000 34.11263 21.8% - 0s * 209 51 14 29.0000000 32.59756 12.4% 26.3 0s Cutting planes: Clique: 3 Zero half: 49 Explored 581 nodes (13661 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%