current bounds on the number of colors: 0 -- 175 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:41:44 2012 Optimize a model with 67252 rows, 15996 columns and 216456 nonzeros Presolve time: 0.21s Presolved: 67252 rows, 15996 columns, 216456 nonzeros Variable types: 0 continuous, 15996 integer (15996 binary) Root relaxation: objective 0.000000e+00, 637 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 (1017 simplex iterations) in 0.36 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 -- 87 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:41:45 2012 Optimize a model with 33328 rows, 8296 columns and 106984 nonzeros Presolve time: 0.15s Presolved: 33328 rows, 8296 columns, 106984 nonzeros Variable types: 0 continuous, 8296 integer (8296 binary) Root relaxation: objective 0.000000e+00, 592 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 (983 simplex iterations) in 0.22 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:41:46 2012 Optimize a model with 16366 rows, 4446 columns and 52248 nonzeros Presolve time: 0.06s Presolved: 16366 rows, 4446 columns, 52248 nonzeros Variable types: 0 continuous, 4446 integer (4446 binary) Root relaxation: objective 0.000000e+00, 372 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 (815 simplex iterations) in 0.11 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:41:46 2012 Optimize a model with 7885 rows, 2521 columns and 24880 nonzeros Presolve time: 0.02s Presolved: 7885 rows, 2521 columns, 24880 nonzeros Variable types: 0 continuous, 2521 integer (2521 binary) Root relaxation: objective 0.000000e+00, 361 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 (670 simplex iterations) in 0.04 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:41:46 2012 Optimize a model with 4030 rows, 1646 columns and 12440 nonzeros Presolve time: 0.01s Presolved: 4030 rows, 1646 columns, 12440 nonzeros Variable types: 0 continuous, 1646 integer (1646 binary) Root relaxation: objective 0.000000e+00, 391 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 0 265 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4591 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:41:46 2012 Optimize a model with 1717 rows, 1121 columns and 4976 nonzeros Presolve removed 175 rows and 175 columns Presolve time: 0.00s Presolved: 1542 rows, 946 columns, 4626 nonzeros Variable types: 0 continuous, 946 integer (946 binary) Root relaxation: objective 0.000000e+00, 185 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 0 175 - 0.00000 - - 0s Explored 0 nodes (739 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 Fri Dec 14 22:41:47 2012 Optimize a model with 2488 rows, 1296 columns and 7464 nonzeros Presolve time: 0.01s Presolved: 2488 rows, 1296 columns, 7464 nonzeros Variable types: 0 continuous, 1296 integer (1296 binary) Root relaxation: objective 0.000000e+00, 399 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 0 348 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 460 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 19 Zero half: 715 Explored 0 nodes (6514 simplex iterations) in 0.82 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 Fri Dec 14 22:41:47 2012 Optimize a model with 3259 rows, 1471 columns and 9952 nonzeros Presolve time: 0.01s Presolved: 3259 rows, 1471 columns, 9952 nonzeros Variable types: 0 continuous, 1471 integer (1471 binary) Root relaxation: objective 0.000000e+00, 389 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 0 340 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 0s 0 0 0.00000 0 330 - 0.00000 - - 0s 0 0 0.00000 0 345 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 1s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 0 0.00000 0 280 - 0.00000 - - 2s 0 0 0.00000 0 283 - 0.00000 - - 2s 0 0 0.00000 0 280 - 0.00000 - - 2s 0 0 0.00000 0 262 - 0.00000 - - 3s 0 0 0.00000 0 268 - 0.00000 - - 3s 0 0 0.00000 0 377 - 0.00000 - - 3s 0 0 0.00000 0 391 - 0.00000 - - 4s 0 0 0.00000 0 391 - 0.00000 - - 4s 0 2 0.00000 0 391 - 0.00000 - - 5s 907 52 0.00000 15 308 - 0.00000 - 65.9 10s 912 55 0.00000 6 270 - 0.00000 - 65.6 15s 917 59 0.00000 16 388 - 0.00000 - 65.2 20s 1264 67 0.00000 25 354 - 0.00000 - 134 25s 1785 82 infeasible 23 - 0.00000 - 143 30s 2222 75 0.00000 29 276 - 0.00000 - 153 35s 2685 78 infeasible 23 - 0.00000 - 158 40s 3156 85 infeasible 25 - 0.00000 - 162 45s 3561 66 0.00000 23 282 - 0.00000 - 167 50s 4014 63 infeasible 25 - 0.00000 - 169 55s 4441 58 infeasible 27 - 0.00000 - 172 60s 4865 32 infeasible 26 - 0.00000 - 174 65s 5283 24 infeasible 24 - 0.00000 - 176 70s 5766 25 0.00000 21 354 - 0.00000 - 176 75s 6288 27 infeasible 27 - 0.00000 - 176 80s 6797 52 infeasible 30 - 0.00000 - 176 85s 7244 19 0.00000 26 272 - 0.00000 - 177 90s Cutting planes: Gomory: 4 Clique: 1 Zero half: 10 Explored 7552 nodes (1385079 simplex iterations) in 93.54 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