current bounds on the number of colors: 0 -- 187 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:37 2012 Optimize a model with 84073 rows, 18293 columns and 269049 nonzeros Presolve time: 0.26s Presolved: 84073 rows, 18293 columns, 269049 nonzeros Variable types: 0 continuous, 18293 integer (18293 binary) Root relaxation: objective 0.000000e+00, 787 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 (1235 simplex iterations) in 0.49 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:39 2012 Optimize a model with 41679 rows, 9504 columns and 133078 nonzeros Presolve time: 0.16s Presolved: 41679 rows, 9504 columns, 133078 nonzeros Variable types: 0 continuous, 9504 integer (9504 binary) Root relaxation: objective 0.000000e+00, 636 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 (1103 simplex iterations) in 0.27 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% current bounds on the number of colors: 0 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:40 2012 Optimize a model with 20933 rows, 5203 columns and 66539 nonzeros Presolve time: 0.08s Presolved: 20933 rows, 5203 columns, 66539 nonzeros Variable types: 0 continuous, 5203 integer (5203 binary) Root relaxation: objective 0.000000e+00, 446 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 (831 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:40 2012 Optimize a model with 10109 rows, 2959 columns and 31823 nonzeros Presolve time: 0.03s Presolved: 10109 rows, 2959 columns, 31823 nonzeros Variable types: 0 continuous, 2959 integer (2959 binary) Root relaxation: objective 0.000000e+00, 383 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 (720 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:40 2012 Optimize a model with 4697 rows, 1837 columns and 14465 nonzeros Presolve time: 0.01s Presolved: 4697 rows, 1837 columns, 14465 nonzeros Variable types: 0 continuous, 1837 integer (1837 binary) Root relaxation: objective 0.000000e+00, 394 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 74 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4129 simplex iterations) in 0.29 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:41 2012 Optimize a model with 1991 rows, 1276 columns and 5786 nonzeros Presolve removed 187 rows and 187 columns Presolve time: 0.00s Presolved: 1804 rows, 1089 columns, 5412 nonzeros Variable types: 0 continuous, 1089 integer (1089 binary) Root relaxation: objective 0.000000e+00, 194 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 187 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (785 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:41 2012 Optimize a model with 2893 rows, 1463 columns and 8679 nonzeros Presolve time: 0.01s Presolved: 2893 rows, 1463 columns, 8679 nonzeros Variable types: 0 continuous, 1463 integer (1463 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 0 372 - 0.00000 - - 0s 0 0 0.00000 0 374 - 0.00000 - - 0s 0 0 0.00000 0 505 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 34 Zero half: 1003 Explored 0 nodes (8431 simplex iterations) in 1.28 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:04:42 2012 Optimize a model with 3795 rows, 1650 columns and 11572 nonzeros Presolve time: 0.01s Presolved: 3795 rows, 1650 columns, 11572 nonzeros Variable types: 0 continuous, 1650 integer (1650 binary) Root relaxation: objective 0.000000e+00, 423 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 0 350 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 0s 0 0 0.00000 0 369 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 1s 0 0 0.00000 0 346 - 0.00000 - - 1s 0 0 0.00000 0 349 - 0.00000 - - 2s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 336 - 0.00000 - - 2s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 330 - 0.00000 - - 3s 0 0 0.00000 0 340 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 4s 0 0 0.00000 0 333 - 0.00000 - - 5s 0 0 0.00000 0 333 - 0.00000 - - 5s 0 2 0.00000 0 333 - 0.00000 - - 6s 424 80 infeasible 15 - 0.00000 - 135 10s 805 127 0.00000 17 354 - 0.00000 - 132 16s 808 129 0.00000 21 330 - 0.00000 - 132 20s 811 131 0.00000 22 308 - 0.00000 - 131 25s 815 133 0.00000 17 298 - 0.00000 - 130 31s 817 135 0.00000 19 301 - 0.00000 - 130 35s 908 127 0.00000 17 425 - 0.00000 - 230 40s 1129 71 0.00000 15 434 - 0.00000 - 237 45s 1350 30 infeasible 19 - 0.00000 - 243 50s 1572 26 0.00000 25 348 - 0.00000 - 246 55s 1805 23 infeasible 22 - 0.00000 - 247 60s 2047 31 0.00000 21 411 - 0.00000 - 247 65s 2241 23 infeasible 21 - 0.00000 - 252 70s 2476 44 infeasible 22 - 0.00000 - 252 75s 2712 54 infeasible 23 - 0.00000 - 252 80s 2931 47 infeasible 24 - 0.00000 - 253 85s 3162 42 0.00000 22 327 - 0.00000 - 255 90s 3388 40 infeasible 21 - 0.00000 - 256 95s 3700 60 infeasible 22 - 0.00000 - 252 100s 3990 42 infeasible 25 - 0.00000 - 251 105s 4209 51 infeasible 30 - 0.00000 - 252 110s 4445 61 infeasible 31 - 0.00000 - 253 115s 4687 61 0.00000 24 328 - 0.00000 - 253 120s 4959 57 infeasible 26 - 0.00000 - 252 125s 5196 56 0.00000 25 397 - 0.00000 - 253 130s 5419 59 infeasible 24 - 0.00000 - 254 135s 5648 50 0.00000 25 318 - 0.00000 - 254 140s 5872 34 0.00000 21 391 - 0.00000 - 255 145s 6076 26 0.00000 22 326 - 0.00000 - 256 150s 6296 24 0.00000 21 386 - 0.00000 - 257 155s 6518 10 0.00000 22 374 - 0.00000 - 257 160s Cutting planes: Gomory: 2 Zero half: 17 Explored 6719 nodes (1780022 simplex iterations) in 164.88 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5