current bounds on the number of colors: 0 -- 121 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:14:34 2012 Optimize a model with 44641 rows, 8002 columns and 140820 nonzeros Presolve time: 0.17s Presolved: 44641 rows, 8002 columns, 140820 nonzeros Variable types: 0 continuous, 8002 integer (8002 binary) Root relaxation: objective 0.000000e+00, 293 iterations, 0.05 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 (555 simplex iterations) in 0.27 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 -- 60 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:14:35 2012 Optimize a model with 22381 rows, 4372 columns and 70410 nonzeros Presolve time: 0.10s Presolved: 22381 rows, 4372 columns, 70410 nonzeros Variable types: 0 continuous, 4372 integer (4372 binary) Root relaxation: objective 0.000000e+00, 287 iterations, 0.02 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 (561 simplex iterations) in 0.15 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 -- 30 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:14:35 2012 Optimize a model with 11251 rows, 2557 columns and 35205 nonzeros Presolve time: 0.04s Presolved: 11251 rows, 2557 columns, 35205 nonzeros Variable types: 0 continuous, 2557 integer (2557 binary) Root relaxation: objective 0.000000e+00, 247 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 (469 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:14:36 2012 Optimize a model with 5315 rows, 1589 columns and 16429 nonzeros Presolve time: 0.01s Presolved: 5315 rows, 1589 columns, 16429 nonzeros Variable types: 0 continuous, 1589 integer (1589 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1118 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:14:36 2012 Optimize a model with 2347 rows, 1105 columns and 7041 nonzeros Presolve time: 0.01s Presolved: 2347 rows, 1105 columns, 7041 nonzeros Variable types: 0 continuous, 1105 integer (1105 binary) Root relaxation: objective 0.000000e+00, 285 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3957 simplex iterations) in 0.41 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:14:36 2012 Optimize a model with 3831 rows, 1347 columns and 11735 nonzeros Presolve time: 0.01s Presolved: 3831 rows, 1347 columns, 11735 nonzeros Variable types: 0 continuous, 1347 integer (1347 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 0.00000 0 178 - 0.00000 - - 0s 0 0 0.00000 0 169 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 309 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 1s 0 0 0.00000 0 303 - 0.00000 - - 1s 0 0 0.00000 0 312 - 0.00000 - - 1s 0 0 0.00000 0 286 - 0.00000 - - 2s 0 0 0.00000 0 291 - 0.00000 - - 2s 0 0 0.00000 0 279 - 0.00000 - - 3s 0 0 0.00000 0 280 - 0.00000 - - 4s 0 0 0.00000 0 280 - 0.00000 - - 4s 0 2 0.00000 0 280 - 0.00000 - - 4s 9 9 0.00000 6 258 - 0.00000 - 316 5s 706 77 0.00000 16 296 - 0.00000 - 84.4 10s 711 81 0.00000 20 261 - 0.00000 - 83.8 15s 718 85 0.00000 21 246 - 0.00000 - 83.0 20s 1008 83 infeasible 33 - 0.00000 - 149 25s 1467 124 infeasible 36 - 0.00000 - 157 30s 1880 117 infeasible 36 - 0.00000 - 166 35s 2319 118 infeasible 32 - 0.00000 - 169 40s 2771 154 0.00000 42 190 - 0.00000 - 170 45s 3269 166 infeasible 39 - 0.00000 - 170 50s 3792 199 infeasible 44 - 0.00000 - 169 55s 4201 150 infeasible 37 - 0.00000 - 171 60s 4661 152 0.00000 33 243 - 0.00000 - 172 65s 5143 182 infeasible 36 - 0.00000 - 172 70s 5608 185 0.00000 29 242 - 0.00000 - 173 75s 6033 164 infeasible 44 - 0.00000 - 174 80s 6493 166 infeasible 36 - 0.00000 - 174 85s 6972 159 0.00000 34 238 - 0.00000 - 174 90s 7412 157 0.00000 43 178 - 0.00000 - 175 95s 7820 141 infeasible 32 - 0.00000 - 175 100s 8333 150 0.00000 31 242 - 0.00000 - 174 105s 8748 157 0.00000 30 228 - 0.00000 - 175 110s 9160 161 0.00000 26 261 - 0.00000 - 175 115s 9583 158 0.00000 36 262 - 0.00000 - 176 120s 9991 218 infeasible 36 - 0.00000 - 176 125s 10342 213 infeasible 33 - 0.00000 - 177 130s 10751 202 0.00000 41 263 - 0.00000 - 177 135s 11219 206 infeasible 39 - 0.00000 - 177 140s 11626 199 infeasible 36 - 0.00000 - 177 145s *11855 0 32 0.0000000 0.00000 0.0% 177 147s Cutting planes: Clique: 3 Zero half: 21 Explored 11856 nodes (2134740 simplex iterations) in 147.98 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:17:04 2012 Optimize a model with 3089 rows, 1226 columns and 9388 nonzeros Presolve time: 0.01s Presolved: 3089 rows, 1226 columns, 9388 nonzeros Variable types: 0 continuous, 1226 integer (1226 binary) Root relaxation: objective 0.000000e+00, 262 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 241 - 0.00000 - - 0s 0 0 0.00000 0 353 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 1s 0 0 0.00000 0 354 - 0.00000 - - 2s 0 0 0.00000 0 348 - 0.00000 - - 2s 0 0 0.00000 0 343 - 0.00000 - - 3s 0 0 0.00000 0 339 - 0.00000 - - 4s 0 0 0.00000 0 339 - 0.00000 - - 4s 0 0 0.00000 0 339 - 0.00000 - - 5s 0 0 0.00000 0 343 - 0.00000 - - 6s 0 0 0.00000 0 343 - 0.00000 - - 6s 0 2 0.00000 0 343 - 0.00000 - - 7s Cutting planes: Clique: 13 Zero half: 18 Explored 45 nodes (42516 simplex iterations) in 8.40 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5