current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:35:58 2012 Optimize a model with 90805 rows, 18730 columns and 289614 nonzeros Presolve time: 0.29s Presolved: 90805 rows, 18730 columns, 289614 nonzeros Variable types: 0 continuous, 18730 integer (18730 binary) Root relaxation: objective 0.000000e+00, 650 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 (1027 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:35:59 2012 Optimize a model with 45497 rows, 9847 columns and 144807 nonzeros Presolve time: 0.16s Presolved: 45497 rows, 9847 columns, 144807 nonzeros Variable types: 0 continuous, 9847 integer (9847 binary) Root relaxation: objective 0.000000e+00, 579 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 (1208 simplex iterations) in 0.29 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 04:36:00 2012 Optimize a model with 22361 rows, 5311 columns and 70863 nonzeros Presolve time: 0.09s Presolved: 22361 rows, 5311 columns, 70863 nonzeros Variable types: 0 continuous, 5311 integer (5311 binary) Root relaxation: objective 0.000000e+00, 426 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 (769 simplex iterations) in 0.13 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 04:36:00 2012 Optimize a model with 10793 rows, 3043 columns and 33891 nonzeros Presolve time: 0.03s Presolved: 10793 rows, 3043 columns, 33891 nonzeros Variable types: 0 continuous, 3043 integer (3043 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 (775 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:36:00 2012 Optimize a model with 5009 rows, 1909 columns and 15405 nonzeros Presolve time: 0.01s Presolved: 5009 rows, 1909 columns, 15405 nonzeros Variable types: 0 continuous, 1909 integer (1909 binary) Root relaxation: objective 0.000000e+00, 408 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 0 356 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 332 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Zero half: 281 Explored 0 nodes (15385 simplex iterations) in 1.59 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 04:36:02 2012 Optimize a model with 2117 rows, 1342 columns and 6162 nonzeros Presolve removed 189 rows and 189 columns Presolve time: 0.01s Presolved: 1928 rows, 1153 columns, 5784 nonzeros Variable types: 0 continuous, 1153 integer (1153 binary) Root relaxation: objective 0.000000e+00, 197 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 0 189 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (811 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 04:36:02 2012 Optimize a model with 3081 rows, 1531 columns and 9243 nonzeros Presolve time: 0.01s Presolved: 3081 rows, 1531 columns, 9243 nonzeros Variable types: 0 continuous, 1531 integer (1531 binary) Root relaxation: objective 0.000000e+00, 444 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 0 376 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5112 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 04:36:03 2012 Optimize a model with 4045 rows, 1720 columns and 12324 nonzeros Presolve time: 0.01s Presolved: 4045 rows, 1720 columns, 12324 nonzeros Variable types: 0 continuous, 1720 integer (1720 binary) Root relaxation: objective 0.000000e+00, 424 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 0 364 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 449 - 0.00000 - - 1s 0 0 0.00000 0 382 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 354 - 0.00000 - - 3s 0 0 0.00000 0 344 - 0.00000 - - 3s 0 0 0.00000 0 340 - 0.00000 - - 4s 0 0 0.00000 0 346 - 0.00000 - - 4s 0 0 0.00000 0 328 - 0.00000 - - 5s 0 0 0.00000 0 326 - 0.00000 - - 6s 0 0 0.00000 0 320 - 0.00000 - - 6s 0 0 0.00000 0 326 - 0.00000 - - 7s 0 0 0.00000 0 326 - 0.00000 - - 7s 0 0 0.00000 0 326 - 0.00000 - - 7s 0 2 0.00000 0 326 - 0.00000 - - 8s 74 32 0.00000 19 433 - 0.00000 - 201 10s 407 41 0.00000 11 368 - 0.00000 - 185 15s 701 60 0.00000 16 364 - 0.00000 - 188 20s 705 63 0.00000 22 328 - 0.00000 - 187 25s 709 65 0.00000 16 353 - 0.00000 - 186 31s 711 67 0.00000 19 331 - 0.00000 - 185 35s 713 68 0.00000 18 327 - 0.00000 - 185 41s 724 75 0.00000 14 382 - 0.00000 - 269 45s 823 47 0.00000 12 415 - 0.00000 - 277 50s 987 34 infeasible 19 - 0.00000 - 278 55s 1101 30 0.00000 18 443 - 0.00000 - 292 60s 1231 22 0.00000 19 332 - 0.00000 - 301 65s 1350 7 0.00000 15 471 - 0.00000 - 310 70s Cutting planes: Clique: 1 Zero half: 4 Explored 1436 nodes (507699 simplex iterations) in 73.07 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