current bounds on the number of colors: 0 -- 109 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:31 2012 Optimize a model with 33319 rows, 6501 columns and 105516 nonzeros Presolve time: 0.15s Presolved: 33319 rows, 6501 columns, 105516 nonzeros Variable types: 0 continuous, 6501 integer (6501 binary) Root relaxation: objective 0.000000e+00, 285 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (516 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 54 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:31 2012 Optimize a model with 16714 rows, 3558 columns and 52758 nonzeros Presolve time: 0.07s Presolved: 16714 rows, 3558 columns, 52758 nonzeros Variable types: 0 continuous, 3558 integer (3558 binary) Root relaxation: objective 0.000000e+00, 263 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (478 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:31 2012 Optimize a model with 8104 rows, 2032 columns and 25402 nonzeros Presolve time: 0.03s Presolved: 8104 rows, 2032 columns, 25402 nonzeros Variable types: 0 continuous, 2032 integer (2032 binary) Root relaxation: objective 0.000000e+00, 219 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (599 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:32 2012 Optimize a model with 3799 rows, 1269 columns and 11724 nonzeros Presolve time: 0.01s Presolved: 3799 rows, 1269 columns, 11724 nonzeros Variable types: 0 continuous, 1269 integer (1269 binary) Root relaxation: objective 0.000000e+00, 238 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 8 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1293 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:32 2012 Optimize a model with 1954 rows, 942 columns and 5862 nonzeros Presolve time: 0.00s Presolved: 1954 rows, 942 columns, 5862 nonzeros Variable types: 0 continuous, 942 integer (942 binary) Root relaxation: objective 0.000000e+00, 233 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3147 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:32 2012 Optimize a model with 2569 rows, 1051 columns and 7816 nonzeros Presolve time: 0.01s Presolved: 2569 rows, 1051 columns, 7816 nonzeros Variable types: 0 continuous, 1051 integer (1051 binary) Root relaxation: objective 0.000000e+00, 224 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 1s 0 0 0.00000 0 307 - 0.00000 - - 1s 0 0 0.00000 0 307 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 311 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 2 0.00000 0 316 - 0.00000 - - 3s Cutting planes: Clique: 7 Zero half: 19 Explored 11 nodes (26404 simplex iterations) in 4.09 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:36 2012 Optimize a model with 3184 rows, 1160 columns and 9770 nonzeros Presolve time: 0.01s Presolved: 3184 rows, 1160 columns, 9770 nonzeros Variable types: 0 continuous, 1160 integer (1160 binary) Root relaxation: objective 0.000000e+00, 251 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 163 - 0.00000 - - 0s 0 0 0.00000 0 185 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 0s 0 0 0.00000 0 213 - 0.00000 - - 1s 0 0 0.00000 0 236 - 0.00000 - - 1s 0 0 0.00000 0 219 - 0.00000 - - 1s 0 0 0.00000 0 234 - 0.00000 - - 1s 0 0 0.00000 0 234 - 0.00000 - - 1s 0 2 0.00000 0 234 - 0.00000 - - 1s 705 100 0.00000 28 183 - 0.00000 - 55.3 5s H 706 94 0.0000000 0.00000 0.0% 55.2 6s Cutting planes: Gomory: 1 Clique: 1 Zero half: 6 Explored 706 nodes (68166 simplex iterations) in 6.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 5