current bounds on the number of colors: 0 -- 213 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:22:46 2012 Optimize a model with 127413 rows, 23778 columns and 404178 nonzeros Presolve time: 0.44s Presolved: 127413 rows, 23778 columns, 404178 nonzeros Variable types: 0 continuous, 23778 integer (23778 binary) Root relaxation: objective 0.000000e+00, 561 iterations, 0.16 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 (1020 simplex iterations) in 0.77 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 -- 106 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:22:48 2012 Optimize a model with 63813 rows, 12489 columns and 202089 nonzeros Presolve time: 0.18s Presolved: 63813 rows, 12489 columns, 202089 nonzeros Variable types: 0 continuous, 12489 integer (12489 binary) Root relaxation: objective 0.000000e+00, 632 iterations, 0.08 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 (1171 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:22:49 2012 Optimize a model with 31413 rows, 6738 columns and 99138 nonzeros Presolve time: 0.13s Presolved: 31413 rows, 6738 columns, 99138 nonzeros Variable types: 0 continuous, 6738 integer (6738 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 (920 simplex iterations) in 0.19 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 14:22:50 2012 Optimize a model with 15813 rows, 3969 columns and 49569 nonzeros Presolve time: 0.05s Presolved: 15813 rows, 3969 columns, 49569 nonzeros Variable types: 0 continuous, 3969 integer (3969 binary) Root relaxation: objective 0.000000e+00, 448 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 (895 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:22:50 2012 Optimize a model with 7413 rows, 2478 columns and 22878 nonzeros Presolve time: 0.02s Presolved: 7413 rows, 2478 columns, 22878 nonzeros Variable types: 0 continuous, 2478 integer (2478 binary) Root relaxation: objective 0.000000e+00, 455 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 (2179 simplex iterations) in 0.16 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 14:22:50 2012 Optimize a model with 3813 rows, 1839 columns and 11439 nonzeros Presolve time: 0.01s Presolved: 3813 rows, 1839 columns, 11439 nonzeros Variable types: 0 continuous, 1839 integer (1839 binary) Root relaxation: objective 0.000000e+00, 470 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 0 328 - 0.00000 - - 0s 0 0 0.00000 0 416 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (10189 simplex iterations) in 1.34 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 14:22:52 2012 Optimize a model with 5013 rows, 2052 columns and 15252 nonzeros Presolve time: 0.01s Presolved: 5013 rows, 2052 columns, 15252 nonzeros Variable types: 0 continuous, 2052 integer (2052 binary) Root relaxation: objective 0.000000e+00, 451 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 0 414 - 0.00000 - - 0s 0 0 0.00000 0 406 - 0.00000 - - 0s 0 0 0.00000 0 404 - 0.00000 - - 1s 0 0 0.00000 0 579 - 0.00000 - - 2s 0 0 0.00000 0 402 - 0.00000 - - 3s 0 0 0.00000 0 402 - 0.00000 - - 4s 0 0 0.00000 0 402 - 0.00000 - - 5s 0 0 0.00000 0 398 - 0.00000 - - 6s 0 0 0.00000 0 398 - 0.00000 - - 8s 0 0 0.00000 0 396 - 0.00000 - - 8s 0 0 0.00000 0 392 - 0.00000 - - 10s 0 0 0.00000 0 394 - 0.00000 - - 11s 0 0 0.00000 0 394 - 0.00000 - - 11s 0 2 0.00000 0 394 - 0.00000 - - 12s 74 28 0.00000 18 463 - 0.00000 - 289 15s 272 64 infeasible 16 - 0.00000 - 240 20s 447 76 infeasible 14 - 0.00000 - 243 25s 603 85 0.00000 12 484 - 0.00000 - 247 30s 704 101 0.00000 7 611 - 0.00000 - 243 36s 705 102 0.00000 16 406 - 0.00000 - 243 40s 707 103 0.00000 14 404 - 0.00000 - 242 45s 709 104 0.00000 16 386 - 0.00000 - 241 52s 710 105 0.00000 16 402 - 0.00000 - 241 55s 712 106 0.00000 13 426 - 0.00000 - 240 62s 713 107 0.00000 17 373 - 0.00000 - 240 66s 714 108 0.00000 15 367 - 0.00000 - 240 70s 718 110 infeasible 15 - 0.00000 - 374 75s 779 95 0.00000 21 534 - 0.00000 - 386 80s Cutting planes: Zero half: 11 Explored 848 nodes (402936 simplex iterations) in 84.63 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 14:24:17 2012 Optimize a model with 6213 rows, 2265 columns and 19065 nonzeros Presolve time: 0.02s Presolved: 6213 rows, 2265 columns, 19065 nonzeros Variable types: 0 continuous, 2265 integer (2265 binary) Root relaxation: objective 0.000000e+00, 466 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 0 408 - 0.00000 - - 0s 0 0 0.00000 0 400 - 0.00000 - - 0s 0 0 0.00000 0 534 - 0.00000 - - 1s 0 0 0.00000 0 484 - 0.00000 - - 1s 0 0 0.00000 0 529 - 0.00000 - - 2s 0 0 0.00000 0 540 - 0.00000 - - 2s 0 0 0.00000 0 437 - 0.00000 - - 3s 0 2 0.00000 0 437 - 0.00000 - - 4s 62 50 0.00000 42 248 - 0.00000 - 154 5s 609 101 0.00000 39 430 - 0.00000 - 59.9 10s * 688 76 52 0.0000000 0.00000 0.0% 100 14s Cutting planes: Gomory: 1 Zero half: 11 Explored 689 nodes (89430 simplex iterations) in 14.27 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% optimal solution found: number of colors: 5