current bounds on the number of colors: 0 -- 198 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:22:45 2012 Optimize a model with 100089 rows, 20611 columns and 319275 nonzeros Presolve time: 0.33s Presolved: 100089 rows, 20611 columns, 319275 nonzeros Variable types: 0 continuous, 20611 integer (20611 binary) Root relaxation: objective 0.000000e+00, 687 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 (1128 simplex iterations) in 0.55 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 -- 99 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:22:46 2012 Optimize a model with 49639 rows, 10711 columns and 158025 nonzeros Presolve time: 0.17s Presolved: 49639 rows, 10711 columns, 158025 nonzeros Variable types: 0 continuous, 10711 integer (10711 binary) Root relaxation: objective 0.000000e+00, 544 iterations, 0.03 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 (951 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:22:47 2012 Optimize a model with 24414 rows, 5761 columns and 77400 nonzeros Presolve time: 0.10s Presolved: 24414 rows, 5761 columns, 77400 nonzeros Variable types: 0 continuous, 5761 integer (5761 binary) Root relaxation: objective 0.000000e+00, 402 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 (995 simplex iterations) in 0.17 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 08:22:48 2012 Optimize a model with 12306 rows, 3385 columns and 38700 nonzeros Presolve time: 0.04s Presolved: 12306 rows, 3385 columns, 38700 nonzeros Variable types: 0 continuous, 3385 integer (3385 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (785 simplex iterations) in 0.07 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 08:22:48 2012 Optimize a model with 6252 rows, 2197 columns and 19350 nonzeros Presolve time: 0.02s Presolved: 6252 rows, 2197 columns, 19350 nonzeros Variable types: 0 continuous, 2197 integer (2197 binary) Root relaxation: objective 0.000000e+00, 427 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 (1606 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:22:48 2012 Optimize a model with 3225 rows, 1603 columns and 9675 nonzeros Presolve time: 0.01s Presolved: 3225 rows, 1603 columns, 9675 nonzeros Variable types: 0 continuous, 1603 integer (1603 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 0 390 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 0s 0 0 0.00000 0 552 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 12 Zero half: 1293 Explored 0 nodes (8894 simplex iterations) in 1.44 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 08:22:50 2012 Optimize a model with 4234 rows, 1801 columns and 12900 nonzeros Presolve time: 0.01s Presolved: 4234 rows, 1801 columns, 12900 nonzeros Variable types: 0 continuous, 1801 integer (1801 binary) Root relaxation: objective 0.000000e+00, 458 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 0 380 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 385 - 0.00000 - - 1s 0 0 0.00000 0 502 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 330 - 0.00000 - - 3s 0 0 0.00000 0 322 - 0.00000 - - 4s 0 0 0.00000 0 318 - 0.00000 - - 5s 0 0 0.00000 0 330 - 0.00000 - - 5s 0 0 0.00000 0 323 - 0.00000 - - 6s 0 0 0.00000 0 324 - 0.00000 - - 7s 0 0 0.00000 0 316 - 0.00000 - - 8s 0 0 0.00000 0 356 - 0.00000 - - 9s 0 0 0.00000 0 356 - 0.00000 - - 9s 0 2 0.00000 0 356 - 0.00000 - - 10s 293 22 infeasible 12 - 0.00000 - 182 15s 631 4 0.00000 9 477 - 0.00000 - 175 20s 713 18 0.00000 0 358 - 0.00000 - 174 27s 715 19 0.00000 0 354 - 0.00000 - 173 31s 717 20 0.00000 0 342 - 0.00000 - 173 36s 719 22 0.00000 0 322 - 0.00000 - 172 41s 721 23 0.00000 0 404 - 0.00000 - 172 46s 791 8 0.00000 18 482 - 0.00000 - 269 50s 917 28 infeasible 28 - 0.00000 - 282 55s 1067 20 infeasible 24 - 0.00000 - 288 60s 1202 25 infeasible 31 - 0.00000 - 295 65s 1326 15 infeasible 27 - 0.00000 - 303 70s Cutting planes: Zero half: 23 Explored 1424 nodes (504882 simplex iterations) in 74.03 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 08:24:04 2012 Optimize a model with 5243 rows, 1999 columns and 16125 nonzeros Presolve time: 0.01s Presolved: 5243 rows, 1999 columns, 16125 nonzeros Variable types: 0 continuous, 1999 integer (1999 binary) Root relaxation: objective 0.000000e+00, 428 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 0 368 - 0.00000 - - 0s 0 0 0.00000 0 285 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 1s 0 0 0.00000 0 354 - 0.00000 - - 1s 0 0 0.00000 0 433 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 2s Cutting planes: Gomory: 1 Zero half: 233 Explored 0 nodes (16593 simplex iterations) in 2.12 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