current bounds on the number of colors: 0 -- 193 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:27:27 2012 Optimize a model with 91681 rows, 19481 columns and 292992 nonzeros Presolve time: 0.30s Presolved: 91681 rows, 19481 columns, 292992 nonzeros Variable types: 0 continuous, 19481 integer (19481 binary) Root relaxation: objective 0.000000e+00, 761 iterations, 0.09 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 (1226 simplex iterations) in 0.53 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:27:28 2012 Optimize a model with 45937 rows, 10217 columns and 146496 nonzeros Presolve time: 0.16s Presolved: 45937 rows, 10217 columns, 146496 nonzeros Variable types: 0 continuous, 10217 integer (10217 binary) Root relaxation: objective 0.000000e+00, 676 iterations, 0.05 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 (1159 simplex iterations) in 0.28 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 06:27:29 2012 Optimize a model with 23065 rows, 5585 columns and 73248 nonzeros Presolve time: 0.09s Presolved: 23065 rows, 5585 columns, 73248 nonzeros Variable types: 0 continuous, 5585 integer (5585 binary) Root relaxation: objective 0.000000e+00, 449 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 (840 simplex iterations) in 0.14 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 06:27:30 2012 Optimize a model with 11629 rows, 3269 columns and 36624 nonzeros Presolve time: 0.04s Presolved: 11629 rows, 3269 columns, 36624 nonzeros Variable types: 0 continuous, 3269 integer (3269 binary) Root relaxation: objective 0.000000e+00, 396 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 (781 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 06:27:30 2012 Optimize a model with 5911 rows, 2111 columns and 18312 nonzeros Presolve time: 0.02s Presolved: 5911 rows, 2111 columns, 18312 nonzeros Variable types: 0 continuous, 2111 integer (2111 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1367 simplex iterations) in 0.05 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 06:27:30 2012 Optimize a model with 3052 rows, 1532 columns and 9156 nonzeros Presolve time: 0.01s Presolved: 3052 rows, 1532 columns, 9156 nonzeros Variable types: 0 continuous, 1532 integer (1532 binary) Root relaxation: objective 0.000000e+00, 443 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 0 382 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 0.00000 0 526 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 11 Zero half: 1157 Explored 0 nodes (8283 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 06:27:31 2012 Optimize a model with 4005 rows, 1725 columns and 12208 nonzeros Presolve time: 0.01s Presolved: 4005 rows, 1725 columns, 12208 nonzeros Variable types: 0 continuous, 1725 integer (1725 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 0.00000 0 376 - 0.00000 - - 0s 0 0 0.00000 0 376 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 1s 0 0 0.00000 0 387 - 0.00000 - - 1s 0 0 0.00000 0 379 - 0.00000 - - 1s 0 0 0.00000 0 375 - 0.00000 - - 2s 0 0 0.00000 0 358 - 0.00000 - - 2s 0 0 0.00000 0 354 - 0.00000 - - 3s 0 0 0.00000 0 356 - 0.00000 - - 3s 0 0 0.00000 0 348 - 0.00000 - - 4s 0 0 0.00000 0 350 - 0.00000 - - 4s 0 0 0.00000 0 355 - 0.00000 - - 5s 0 0 0.00000 0 346 - 0.00000 - - 5s 0 0 0.00000 0 336 - 0.00000 - - 6s 0 0 0.00000 0 338 - 0.00000 - - 7s 0 0 0.00000 0 338 - 0.00000 - - 7s 0 2 0.00000 0 337 - 0.00000 - - 8s 97 49 0.00000 18 424 - 0.00000 - 210 10s 601 95 0.00000 18 328 - 0.00000 - 147 15s 613 102 0.00000 8 360 - 0.00000 - 145 21s 615 103 0.00000 17 348 - 0.00000 - 144 25s 618 105 0.00000 17 334 - 0.00000 - 144 30s 620 107 0.00000 13 320 - 0.00000 - 143 35s 623 109 0.00000 11 315 - 0.00000 - 143 40s 628 114 0.00000 11 397 - 0.00000 - 278 45s 681 115 infeasible 22 - 0.00000 - 274 50s 928 92 infeasible 22 - 0.00000 - 255 55s 1172 77 infeasible 23 - 0.00000 - 254 60s 1398 49 infeasible 20 - 0.00000 - 256 65s 1607 42 infeasible 28 - 0.00000 - 258 70s 1859 46 0.00000 23 332 - 0.00000 - 257 75s 2082 27 infeasible 24 - 0.00000 - 259 80s 2307 26 infeasible 23 - 0.00000 - 260 85s 2524 15 0.00000 22 428 - 0.00000 - 260 90s 2742 13 0.00000 19 434 - 0.00000 - 260 95s 2999 34 0.00000 26 348 - 0.00000 - 257 100s 3269 30 infeasible 28 - 0.00000 - 256 105s 3548 37 0.00000 21 414 - 0.00000 - 254 110s 3795 44 infeasible 23 - 0.00000 - 255 115s 4041 24 infeasible 26 - 0.00000 - 255 120s 4295 20 0.00000 25 428 - 0.00000 - 255 125s 4549 14 infeasible 20 - 0.00000 - 255 130s 4850 3 infeasible 27 - 0.00000 - 254 135s Cutting planes: Gomory: 1 Zero half: 12 Explored 4868 nodes (1294217 simplex iterations) in 135.46 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 06:29:47 2012 Optimize a model with 4958 rows, 1918 columns and 15260 nonzeros Presolve time: 0.01s Presolved: 4958 rows, 1918 columns, 15260 nonzeros Variable types: 0 continuous, 1918 integer (1918 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 0 239 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4966 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