current bounds on the number of colors: 0 -- 190 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:45 2012 Optimize a model with 84645 rows, 18939 columns and 271415 nonzeros Presolve time: 0.27s Presolved: 84645 rows, 18939 columns, 271415 nonzeros Variable types: 0 continuous, 18939 integer (18939 binary) Root relaxation: objective 0.000000e+00, 824 iterations, 0.09 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 (1310 simplex iterations) in 0.49 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:47 2012 Optimize a model with 41973 rows, 9819 columns and 134279 nonzeros Presolve time: 0.15s Presolved: 41973 rows, 9819 columns, 134279 nonzeros Variable types: 0 continuous, 9819 integer (9819 binary) Root relaxation: objective 0.000000e+00, 788 iterations, 0.06 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 (1237 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:48 2012 Optimize a model with 20637 rows, 5259 columns and 65711 nonzeros Presolve time: 0.08s Presolved: 20637 rows, 5259 columns, 65711 nonzeros Variable types: 0 continuous, 5259 integer (5259 binary) Root relaxation: objective 0.000000e+00, 427 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 (775 simplex iterations) in 0.12 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:48 2012 Optimize a model with 9969 rows, 2979 columns and 31427 nonzeros Presolve time: 0.03s Presolved: 9969 rows, 2979 columns, 31427 nonzeros Variable types: 0 continuous, 2979 integer (2979 binary) Root relaxation: objective 0.000000e+00, 395 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 (1026 simplex iterations) in 0.07 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:48 2012 Optimize a model with 4635 rows, 1839 columns and 14285 nonzeros Presolve time: 0.01s Presolved: 4635 rows, 1839 columns, 14285 nonzeros Variable types: 0 continuous, 1839 integer (1839 binary) Root relaxation: objective 0.000000e+00, 422 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 0 281 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (5378 simplex iterations) in 0.48 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:49 2012 Optimize a model with 1968 rows, 1269 columns and 5714 nonzeros Presolve removed 190 rows and 190 columns Presolve time: 0.00s Presolved: 1778 rows, 1079 columns, 5334 nonzeros Variable types: 0 continuous, 1079 integer (1079 binary) Root relaxation: objective 0.000000e+00, 202 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 0 190 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (833 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:49 2012 Optimize a model with 2857 rows, 1459 columns and 8571 nonzeros Presolve time: 0.01s Presolved: 2857 rows, 1459 columns, 8571 nonzeros Variable types: 0 continuous, 1459 integer (1459 binary) Root relaxation: objective 0.000000e+00, 430 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 0 374 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5662 simplex iterations) in 0.67 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:02:50 2012 Optimize a model with 3746 rows, 1649 columns and 11428 nonzeros Presolve time: 0.01s Presolved: 3746 rows, 1649 columns, 11428 nonzeros Variable types: 0 continuous, 1649 integer (1649 binary) Root relaxation: objective 0.000000e+00, 460 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 0 368 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 471 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 347 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 320 - 0.00000 - - 3s 0 0 0.00000 0 320 - 0.00000 - - 4s 0 2 0.00000 0 320 - 0.00000 - - 4s 9 9 0.00000 6 424 - 0.00000 - 451 5s 1208 37 0.00000 26 348 - 0.00000 - 81.8 10s 1213 41 0.00000 5 313 - 0.00000 - 81.5 15s 1216 43 0.00000 4 299 - 0.00000 - 81.3 20s 1219 45 0.00000 12 304 - 0.00000 - 81.1 25s 1446 57 infeasible 23 - 0.00000 - 144 30s 1777 44 infeasible 23 - 0.00000 - 160 35s 2103 36 infeasible 26 - 0.00000 - 171 40s 2482 67 0.00000 20 318 - 0.00000 - 175 45s 2830 75 infeasible 29 - 0.00000 - 180 50s 3167 82 infeasible 26 - 0.00000 - 185 55s 3511 152 infeasible 28 - 0.00000 - 188 60s 3810 159 infeasible 28 - 0.00000 - 192 65s 4122 143 0.00000 26 342 - 0.00000 - 196 70s 4405 136 0.00000 23 336 - 0.00000 - 199 75s 4718 115 0.00000 21 353 - 0.00000 - 202 80s 5029 130 0.00000 29 411 - 0.00000 - 203 85s 5335 130 infeasible 24 - 0.00000 - 206 90s 5624 139 0.00000 21 344 - 0.00000 - 208 95s 5912 112 0.00000 22 352 - 0.00000 - 210 100s 6192 104 infeasible 27 - 0.00000 - 212 105s 6443 67 infeasible 23 - 0.00000 - 214 110s 6687 33 infeasible 24 - 0.00000 - 216 115s 6985 19 0.00000 20 320 - 0.00000 - 217 120s 7264 10 0.00000 21 391 - 0.00000 - 219 125s Cutting planes: Zero half: 7 Explored 7395 nodes (1660527 simplex iterations) in 127.66 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