current bounds on the number of colors: 0 -- 215 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:37:53 2012 Optimize a model with 122944 rows, 24152 columns and 391192 nonzeros Presolve time: 0.42s Presolved: 122944 rows, 24152 columns, 391192 nonzeros Variable types: 0 continuous, 24152 integer (24152 binary) Root relaxation: objective 0.000000e+00, 570 iterations, 0.15 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 (1040 simplex iterations) in 0.75 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 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:37:55 2012 Optimize a model with 61006 rows, 12542 columns and 193768 nonzeros Presolve time: 0.17s Presolved: 61006 rows, 12542 columns, 193768 nonzeros Variable types: 0 continuous, 12542 integer (12542 binary) Root relaxation: objective 0.000000e+00, 766 iterations, 0.07 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 (1278 simplex iterations) in 0.34 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:37:57 2012 Optimize a model with 30037 rows, 6737 columns and 95056 nonzeros Presolve time: 0.12s Presolved: 30037 rows, 6737 columns, 95056 nonzeros Variable types: 0 continuous, 6737 integer (6737 binary) Root relaxation: objective 0.000000e+00, 481 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 (914 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 15:37:57 2012 Optimize a model with 15126 rows, 3942 columns and 47528 nonzeros Presolve time: 0.05s Presolved: 15126 rows, 3942 columns, 47528 nonzeros Variable types: 0 continuous, 3942 integer (3942 binary) Root relaxation: objective 0.000000e+00, 437 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 (848 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 15:37:57 2012 Optimize a model with 7097 rows, 2437 columns and 21936 nonzeros Presolve time: 0.02s Presolved: 7097 rows, 2437 columns, 21936 nonzeros Variable types: 0 continuous, 2437 integer (2437 binary) Root relaxation: objective 0.000000e+00, 463 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 (1896 simplex iterations) in 0.11 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 15:37:58 2012 Optimize a model with 3656 rows, 1792 columns and 10968 nonzeros Presolve time: 0.01s Presolved: 3656 rows, 1792 columns, 10968 nonzeros Variable types: 0 continuous, 1792 integer (1792 binary) Root relaxation: objective 0.000000e+00, 468 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 0 424 - 0.00000 - - 0s 0 0 0.00000 0 430 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5958 simplex iterations) in 0.90 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 15:37:59 2012 Optimize a model with 4803 rows, 2007 columns and 14624 nonzeros Presolve time: 0.01s Presolved: 4803 rows, 2007 columns, 14624 nonzeros Variable types: 0 continuous, 2007 integer (2007 binary) Root relaxation: objective 0.000000e+00, 475 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 0 420 - 0.00000 - - 0s 0 0 0.00000 0 414 - 0.00000 - - 0s 0 0 0.00000 0 404 - 0.00000 - - 1s 0 0 0.00000 0 604 - 0.00000 - - 1s 0 0 0.00000 0 398 - 0.00000 - - 3s 0 0 0.00000 0 410 - 0.00000 - - 4s 0 0 0.00000 0 392 - 0.00000 - - 5s 0 0 0.00000 0 395 - 0.00000 - - 6s 0 0 0.00000 0 397 - 0.00000 - - 7s 0 0 0.00000 0 410 - 0.00000 - - 8s 0 0 0.00000 0 408 - 0.00000 - - 8s 0 2 0.00000 0 408 - 0.00000 - - 9s 4 4 0.00000 2 558 - 0.00000 - 928 10s 226 40 infeasible 17 - 0.00000 - 218 15s 507 89 infeasible 23 - 0.00000 - 191 20s 709 97 0.00000 7 404 - 0.00000 - 192 25s 711 99 0.00000 7 382 - 0.00000 - 191 31s 713 100 0.00000 5 390 - 0.00000 - 191 37s 714 101 0.00000 19 382 - 0.00000 - 190 40s 716 102 0.00000 7 385 - 0.00000 - 190 46s 777 111 infeasible 25 - 0.00000 - 268 50s 888 75 infeasible 20 - 0.00000 - 283 55s 999 39 infeasible 20 - 0.00000 - 294 60s 1117 25 infeasible 23 - 0.00000 - 303 65s 1231 25 infeasible 22 - 0.00000 - 312 70s 1328 18 0.00000 20 492 - 0.00000 - 322 75s 1424 16 0.00000 24 504 - 0.00000 - 330 80s 1542 16 0.00000 20 396 - 0.00000 - 333 85s 1660 8 infeasible 21 - 0.00000 - 336 90s Cutting planes: Gomory: 2 Clique: 1 Zero half: 11 Explored 1717 nodes (639715 simplex iterations) in 93.18 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 15:39:32 2012 Optimize a model with 5950 rows, 2222 columns and 18280 nonzeros Presolve time: 0.02s Presolved: 5950 rows, 2222 columns, 18280 nonzeros Variable types: 0 continuous, 2222 integer (2222 binary) Root relaxation: objective 0.000000e+00, 468 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 0 400 - 0.00000 - - 0s 0 0 0.00000 0 402 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 1s 0 0 0.00000 0 338 - 0.00000 - - 1s 0 0 0.00000 0 342 - 0.00000 - - 1s 0 0 0.00000 0 336 - 0.00000 - - 2s 0 0 0.00000 0 330 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 3s 0 0 0.00000 0 327 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 310 - 0.00000 - - 4s 0 0 0.00000 0 302 - 0.00000 - - 4s 0 0 0.00000 0 278 - 0.00000 - - 4s 0 0 0.00000 0 262 - 0.00000 - - 5s 0 0 0.00000 0 250 - 0.00000 - - 5s 0 0 0.00000 0 244 - 0.00000 - - 5s 0 0 0.00000 0 230 - 0.00000 - - 6s 0 0 0.00000 0 248 - 0.00000 - - 6s 0 0 0.00000 0 232 - 0.00000 - - 6s 0 0 0.00000 0 156 - 0.00000 - - 6s 0 0 0.00000 0 216 - 0.00000 - - 7s 0 0 0.00000 0 306 - 0.00000 - - 7s 0 0 0.00000 0 306 - 0.00000 - - 8s 0 2 0.00000 0 306 - 0.00000 - - 9s 2 3 0.00000 1 314 - 0.00000 - 1552 10s * 182 10 62 0.0000000 0.00000 0.0% 86.8 11s Cutting planes: Clique: 3 Zero half: 13 Explored 183 nodes (91129 simplex iterations) in 11.54 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