current bounds on the number of colors: 0 -- 209 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:15:34 2012 Optimize a model with 115649 rows, 22846 columns and 368056 nonzeros Presolve time: 0.40s Presolved: 115649 rows, 22846 columns, 368056 nonzeros Variable types: 0 continuous, 22846 integer (22846 binary) Root relaxation: objective 0.000000e+00, 540 iterations, 0.14 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 (980 simplex iterations) in 0.71 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:15:36 2012 Optimize a model with 57929 rows, 11978 columns and 184028 nonzeros Presolve time: 0.17s Presolved: 57929 rows, 11978 columns, 184028 nonzeros Variable types: 0 continuous, 11978 integer (11978 binary) Root relaxation: objective 0.000000e+00, 701 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 (1199 simplex iterations) in 0.31 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:15:37 2012 Optimize a model with 29069 rows, 6544 columns and 92014 nonzeros Presolve time: 0.12s Presolved: 29069 rows, 6544 columns, 92014 nonzeros Variable types: 0 continuous, 6544 integer (6544 binary) Root relaxation: objective 0.000000e+00, 488 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 (938 simplex iterations) in 0.18 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:15:38 2012 Optimize a model with 14639 rows, 3827 columns and 46007 nonzeros Presolve time: 0.05s Presolved: 14639 rows, 3827 columns, 46007 nonzeros Variable types: 0 continuous, 3827 integer (3827 binary) Root relaxation: objective 0.000000e+00, 433 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 (819 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:15:38 2012 Optimize a model with 6869 rows, 2364 columns and 21234 nonzeros Presolve time: 0.02s Presolved: 6869 rows, 2364 columns, 21234 nonzeros Variable types: 0 continuous, 2364 integer (2364 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2120 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:15:38 2012 Optimize a model with 3539 rows, 1737 columns and 10617 nonzeros Presolve time: 0.01s Presolved: 3539 rows, 1737 columns, 10617 nonzeros Variable types: 0 continuous, 1737 integer (1737 binary) Root relaxation: objective 0.000000e+00, 472 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 0 324 - 0.00000 - - 0s 0 0 0.00000 0 392 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (9800 simplex iterations) in 1.23 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 Sat Dec 15 13:15:39 2012 Optimize a model with 4649 rows, 1946 columns and 14156 nonzeros Presolve time: 0.01s Presolved: 4649 rows, 1946 columns, 14156 nonzeros Variable types: 0 continuous, 1946 integer (1946 binary) Root relaxation: objective 0.000000e+00, 453 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 0 404 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 1s 0 0 0.00000 0 404 - 0.00000 - - 1s 0 0 0.00000 0 404 - 0.00000 - - 2s 0 0 0.00000 0 392 - 0.00000 - - 2s 0 0 0.00000 0 390 - 0.00000 - - 3s 0 0 0.00000 0 399 - 0.00000 - - 4s 0 0 0.00000 0 384 - 0.00000 - - 4s 0 0 0.00000 0 378 - 0.00000 - - 5s 0 0 0.00000 0 380 - 0.00000 - - 6s 0 0 0.00000 0 372 - 0.00000 - - 7s 0 0 0.00000 0 374 - 0.00000 - - 7s 0 0 0.00000 0 374 - 0.00000 - - 8s 0 2 0.00000 0 374 - 0.00000 - - 9s 50 20 infeasible 22 - 0.00000 - 231 10s 603 57 0.00000 13 398 - 0.00000 - 135 15s 606 59 0.00000 20 378 - 0.00000 - 135 20s 608 61 0.00000 15 376 - 0.00000 - 134 25s 610 62 0.00000 13 364 - 0.00000 - 134 30s 613 64 0.00000 27 338 - 0.00000 - 133 36s 615 65 0.00000 24 363 - 0.00000 - 133 41s 625 72 0.00000 17 370 - 0.00000 - 257 45s 735 85 0.00000 22 374 - 0.00000 - 249 50s 937 144 0.00000 25 376 - 0.00000 - 248 55s 1113 146 infeasible 25 - 0.00000 - 256 60s 1278 153 0.00000 23 388 - 0.00000 - 263 65s 1469 144 0.00000 22 386 - 0.00000 - 267 70s 1621 122 0.00000 21 362 - 0.00000 - 275 75s 1781 118 infeasible 29 - 0.00000 - 280 80s 1945 94 infeasible 26 - 0.00000 - 284 85s 2114 81 0.00000 30 380 - 0.00000 - 287 90s 2259 70 infeasible 23 - 0.00000 - 292 95s 2437 72 infeasible 25 - 0.00000 - 293 100s 2619 60 0.00000 33 411 - 0.00000 - 294 105s 2815 46 infeasible 25 - 0.00000 - 294 110s 2973 34 0.00000 27 477 - 0.00000 - 296 115s 3136 15 0.00000 31 368 - 0.00000 - 297 120s 3324 25 infeasible 27 - 0.00000 - 297 125s 3493 10 infeasible 24 - 0.00000 - 299 130s 3671 14 infeasible 31 - 0.00000 - 299 135s Cutting planes: Zero half: 13 Explored 3698 nodes (1164260 simplex iterations) in 135.86 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 Sat Dec 15 13:17:55 2012 Optimize a model with 5759 rows, 2155 columns and 17695 nonzeros Presolve time: 0.02s Presolved: 5759 rows, 2155 columns, 17695 nonzeros Variable types: 0 continuous, 2155 integer (2155 binary) Root relaxation: objective 0.000000e+00, 446 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 0 388 - 0.00000 - - 0s 0 0 0.00000 0 380 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (11325 simplex iterations) in 1.25 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