current bounds on the number of colors: 0 -- 194 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:35:14 2012 Optimize a model with 90113 rows, 19745 columns and 288575 nonzeros Presolve time: 0.29s Presolved: 90113 rows, 19745 columns, 288575 nonzeros Variable types: 0 continuous, 19745 integer (19745 binary) Root relaxation: objective 0.000000e+00, 858 iterations, 0.10 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 (1286 simplex iterations) in 0.52 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:35:16 2012 Optimize a model with 44690 rows, 10239 columns and 142800 nonzeros Presolve time: 0.15s Presolved: 44690 rows, 10239 columns, 142800 nonzeros Variable types: 0 continuous, 10239 integer (10239 binary) Root relaxation: objective 0.000000e+00, 605 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 (1073 simplex iterations) in 0.26 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:35:17 2012 Optimize a model with 22442 rows, 5583 columns and 71400 nonzeros Presolve time: 0.09s Presolved: 22442 rows, 5583 columns, 71400 nonzeros Variable types: 0 continuous, 5583 integer (5583 binary) Root relaxation: objective 0.000000e+00, 438 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 (794 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:35:17 2012 Optimize a model with 11318 rows, 3255 columns and 35700 nonzeros Presolve time: 0.04s Presolved: 11318 rows, 3255 columns, 35700 nonzeros Variable types: 0 continuous, 3255 integer (3255 binary) Root relaxation: objective 0.000000e+00, 412 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 (761 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:35:17 2012 Optimize a model with 5756 rows, 2091 columns and 17850 nonzeros Presolve time: 0.02s Presolved: 5756 rows, 2091 columns, 17850 nonzeros Variable types: 0 continuous, 2091 integer (2091 binary) Root relaxation: objective 0.000000e+00, 416 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 (1458 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:35:18 2012 Optimize a model with 2975 rows, 1509 columns and 8925 nonzeros Presolve time: 0.01s Presolved: 2975 rows, 1509 columns, 8925 nonzeros Variable types: 0 continuous, 1509 integer (1509 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 0.00000 0 384 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4938 simplex iterations) in 0.56 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 06:35:18 2012 Optimize a model with 3902 rows, 1703 columns and 11900 nonzeros Presolve time: 0.01s Presolved: 3902 rows, 1703 columns, 11900 nonzeros Variable types: 0 continuous, 1703 integer (1703 binary) Root relaxation: objective 0.000000e+00, 436 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 0 372 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 354 - 0.00000 - - 1s 0 0 0.00000 0 457 - 0.00000 - - 1s 0 0 0.00000 0 348 - 0.00000 - - 2s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 338 - 0.00000 - - 3s 0 0 0.00000 0 345 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 0 0.00000 0 338 - 0.00000 - - 4s 0 0 0.00000 0 347 - 0.00000 - - 5s 0 0 0.00000 0 344 - 0.00000 - - 5s 0 2 0.00000 0 344 - 0.00000 - - 6s 380 44 infeasible 17 - 0.00000 - 152 10s 704 70 0.00000 18 526 - 0.00000 - 152 15s 707 72 0.00000 17 314 - 0.00000 - 151 20s 710 74 0.00000 18 319 - 0.00000 - 150 25s 713 76 0.00000 18 340 - 0.00000 - 150 31s 844 95 infeasible 24 - 0.00000 - 225 35s 1079 88 infeasible 25 - 0.00000 - 231 40s 1300 81 infeasible 21 - 0.00000 - 240 45s 1549 74 0.00000 26 408 - 0.00000 - 242 50s 1784 65 infeasible 23 - 0.00000 - 247 55s 2018 65 infeasible 22 - 0.00000 - 249 60s 2239 82 infeasible 22 - 0.00000 - 252 65s 2459 90 0.00000 29 344 - 0.00000 - 254 70s 2690 85 infeasible 20 - 0.00000 - 256 75s 2924 75 0.00000 20 410 - 0.00000 - 257 80s 3129 56 0.00000 21 344 - 0.00000 - 260 85s 3319 32 infeasible 27 - 0.00000 - 263 90s 3521 20 0.00000 24 384 - 0.00000 - 265 95s 3748 17 infeasible 26 - 0.00000 - 265 100s 3972 15 0.00000 22 435 - 0.00000 - 265 105s 4180 7 0.00000 23 429 - 0.00000 - 266 110s Cutting planes: Gomory: 1 Zero half: 7 Explored 4384 nodes (1211131 simplex iterations) in 114.29 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 06:37:13 2012 Optimize a model with 4829 rows, 1897 columns and 14875 nonzeros Presolve time: 0.01s Presolved: 4829 rows, 1897 columns, 14875 nonzeros Variable types: 0 continuous, 1897 integer (1897 binary) Root relaxation: objective 0.000000e+00, 414 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 0 284 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4982 simplex iterations) in 0.44 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