Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:29:00 2012 Optimize a model with 4998 rows, 142 columns and 9996 nonzeros Presolve removed 3583 rows and 0 columns Presolve time: 0.19s Presolved: 1415 rows, 142 columns, 10056 nonzeros Variable types: 0 continuous, 142 integer (142 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.811876e+01, 680 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.11876 0 135 7.00000 18.11876 159% - 0s H 0 0 8.0000000 18.11876 126% - 0s 0 0 17.69784 0 139 8.00000 17.69784 121% - 0s 0 0 17.53673 0 141 8.00000 17.53673 119% - 0s H 0 0 9.0000000 17.53673 94.9% - 0s 0 0 17.49278 0 140 9.00000 17.49278 94.4% - 0s 0 0 17.42342 0 140 9.00000 17.42342 93.6% - 1s 0 0 17.37057 0 141 9.00000 17.37057 93.0% - 1s 0 0 17.35330 0 140 9.00000 17.35330 92.8% - 1s 0 0 17.35233 0 140 9.00000 17.35233 92.8% - 1s 0 0 17.34815 0 140 9.00000 17.34815 92.8% - 1s H 0 0 10.0000000 17.34815 73.5% - 1s 0 0 17.34393 0 141 10.00000 17.34393 73.4% - 2s 0 0 17.33497 0 142 10.00000 17.33497 73.3% - 2s 0 0 17.31352 0 141 10.00000 17.31352 73.1% - 2s 0 0 17.30417 0 142 10.00000 17.30417 73.0% - 2s 0 0 17.29641 0 141 10.00000 17.29641 73.0% - 2s 0 0 17.28708 0 142 10.00000 17.28708 72.9% - 3s H 0 0 11.0000000 17.28708 57.2% - 3s 0 0 17.27888 0 142 11.00000 17.27888 57.1% - 3s 0 0 17.27343 0 142 11.00000 17.27343 57.0% - 3s 0 0 17.27008 0 142 11.00000 17.27008 57.0% - 3s 0 0 17.26589 0 141 11.00000 17.26589 57.0% - 3s 0 0 17.25143 0 140 11.00000 17.25143 56.8% - 4s 0 0 17.24856 0 138 11.00000 17.24856 56.8% - 4s 0 0 17.24773 0 140 11.00000 17.24773 56.8% - 4s 0 0 17.24727 0 141 11.00000 17.24727 56.8% - 4s 0 0 17.24719 0 141 11.00000 17.24719 56.8% - 4s 0 2 17.24380 0 141 11.00000 17.24380 56.8% - 5s Cutting planes: Clique: 162 Explored 400 nodes (36062 simplex iterations) in 8.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%