current bounds on the number of colors: 0 -- 173 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:11:59 2012 Optimize a model with 64157 rows, 15622 columns and 206830 nonzeros Presolve time: 0.20s Presolved: 64157 rows, 15622 columns, 206830 nonzeros Variable types: 0 continuous, 15622 integer (15622 binary) Root relaxation: objective 0.000000e+00, 655 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 (1031 simplex iterations) in 0.35 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 -- 86 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:12:00 2012 Optimize a model with 32165 rows, 8183 columns and 103415 nonzeros Presolve time: 0.14s Presolved: 32165 rows, 8183 columns, 103415 nonzeros Variable types: 0 continuous, 8183 integer (8183 binary) Root relaxation: objective 0.000000e+00, 444 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 (763 simplex iterations) in 0.20 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:12:00 2012 Optimize a model with 15797 rows, 4377 columns and 50505 nonzeros Presolve time: 0.06s Presolved: 15797 rows, 4377 columns, 50505 nonzeros Variable types: 0 continuous, 4377 integer (4377 binary) Root relaxation: objective 0.000000e+00, 367 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 (687 simplex iterations) in 0.09 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:12:01 2012 Optimize a model with 7613 rows, 2474 columns and 24050 nonzeros Presolve time: 0.02s Presolved: 7613 rows, 2474 columns, 24050 nonzeros Variable types: 0 continuous, 2474 integer (2474 binary) Root relaxation: objective 0.000000e+00, 360 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 (682 simplex iterations) in 0.04 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:12:01 2012 Optimize a model with 3893 rows, 1609 columns and 12025 nonzeros Presolve time: 0.01s Presolved: 3893 rows, 1609 columns, 12025 nonzeros Variable types: 0 continuous, 1609 integer (1609 binary) Root relaxation: objective 0.000000e+00, 402 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 (1668 simplex iterations) in 0.08 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 Fri Dec 14 22:12:01 2012 Optimize a model with 1661 rows, 1090 columns and 4810 nonzeros Presolve removed 173 rows and 173 columns Presolve time: 0.00s Presolved: 1488 rows, 917 columns, 4464 nonzeros Variable types: 0 continuous, 917 integer (917 binary) Root relaxation: objective 0.000000e+00, 181 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 0 173 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (754 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 Fri Dec 14 22:12:01 2012 Optimize a model with 2405 rows, 1263 columns and 7215 nonzeros Presolve time: 0.01s Presolved: 2405 rows, 1263 columns, 7215 nonzeros Variable types: 0 continuous, 1263 integer (1263 binary) Root relaxation: objective 0.000000e+00, 370 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 0 340 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 458 - 0.00000 - - 0s 0 0 0.00000 0 470 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 3 Zero half: 600 Explored 0 nodes (7704 simplex iterations) in 0.99 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 Fri Dec 14 22:12:02 2012 Optimize a model with 3149 rows, 1436 columns and 9620 nonzeros Presolve time: 0.01s Presolved: 3149 rows, 1436 columns, 9620 nonzeros Variable types: 0 continuous, 1436 integer (1436 binary) Root relaxation: objective 0.000000e+00, 375 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 0 318 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 361 - 0.00000 - - 1s 0 0 0.00000 0 362 - 0.00000 - - 1s 0 0 0.00000 0 362 - 0.00000 - - 1s 0 2 0.00000 0 361 - 0.00000 - - 2s 586 98 0.00000 13 276 - 0.00000 - 101 5s 609 105 0.00000 14 328 - 0.00000 - 98.7 10s 709 124 0.00000 24 360 - 0.00000 - 145 15s 1174 91 0.00000 25 308 - 0.00000 - 160 20s 1650 105 0.00000 28 284 - 0.00000 - 166 25s 2144 99 infeasible 26 - 0.00000 - 169 30s 2577 48 infeasible 34 - 0.00000 - 174 35s 3022 41 0.00000 32 280 - 0.00000 - 176 40s 3463 88 infeasible 31 - 0.00000 - 177 45s 3917 86 infeasible 31 - 0.00000 - 179 50s 4331 92 0.00000 28 324 - 0.00000 - 181 55s 4759 108 0.00000 23 290 - 0.00000 - 183 60s 5147 100 infeasible 27 - 0.00000 - 185 65s 5539 82 0.00000 25 362 - 0.00000 - 187 70s 5940 59 0.00000 25 353 - 0.00000 - 188 75s 6350 61 0.00000 29 286 - 0.00000 - 189 80s 6730 59 0.00000 27 304 - 0.00000 - 190 85s 7089 50 infeasible 34 - 0.00000 - 191 90s 7507 42 infeasible 29 - 0.00000 - 192 95s 7942 43 infeasible 32 - 0.00000 - 192 100s 8332 29 0.00000 23 394 - 0.00000 - 192 105s 8711 32 infeasible 37 - 0.00000 - 193 110s 9101 4 0.00000 24 369 - 0.00000 - 194 115s Cutting planes: Gomory: 1 Clique: 1 Zero half: 19 Explored 9192 nodes (1794855 simplex iterations) in 116.11 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