current bounds on the number of colors: 0 -- 171 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:23:34 2012 Optimize a model with 62391 rows, 15267 columns and 201195 nonzeros Presolve time: 0.19s Presolved: 62391 rows, 15267 columns, 201195 nonzeros Variable types: 0 continuous, 15267 integer (15267 binary) Root relaxation: objective 0.000000e+00, 599 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 (957 simplex iterations) in 0.33 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 -- 85 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:23:35 2012 Optimize a model with 30915 rows, 7914 columns and 99414 nonzeros Presolve time: 0.15s Presolved: 30915 rows, 7914 columns, 99414 nonzeros Variable types: 0 continuous, 7914 integer (7914 binary) Root relaxation: objective 0.000000e+00, 432 iterations, 0.02 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 (765 simplex iterations) in 0.20 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 -- 42 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:23:36 2012 Optimize a model with 15543 rows, 4323 columns and 49707 nonzeros Presolve time: 0.06s Presolved: 15543 rows, 4323 columns, 49707 nonzeros Variable types: 0 continuous, 4323 integer (4323 binary) Root relaxation: objective 0.000000e+00, 363 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 (680 simplex iterations) in 0.09 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 21:23:36 2012 Optimize a model with 7491 rows, 2442 columns and 23670 nonzeros Presolve time: 0.02s Presolved: 7491 rows, 2442 columns, 23670 nonzeros Variable types: 0 continuous, 2442 integer (2442 binary) Root relaxation: objective 0.000000e+00, 356 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 (659 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 21:23:36 2012 Optimize a model with 3831 rows, 1587 columns and 11835 nonzeros Presolve time: 0.01s Presolved: 3831 rows, 1587 columns, 11835 nonzeros Variable types: 0 continuous, 1587 integer (1587 binary) Root relaxation: objective 0.000000e+00, 387 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 54 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3908 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:23:37 2012 Optimize a model with 1635 rows, 1074 columns and 4734 nonzeros Presolve removed 171 rows and 171 columns Presolve time: 0.00s Presolved: 1464 rows, 903 columns, 4392 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 182 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 0 171 - 0.00000 - - 0s Explored 0 nodes (727 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 21:23:37 2012 Optimize a model with 2367 rows, 1245 columns and 7101 nonzeros Presolve time: 0.01s Presolved: 2367 rows, 1245 columns, 7101 nonzeros Variable types: 0 continuous, 1245 integer (1245 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 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4099 simplex iterations) in 0.44 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:23:37 2012 Optimize a model with 3099 rows, 1416 columns and 9468 nonzeros Presolve time: 0.01s Presolved: 3099 rows, 1416 columns, 9468 nonzeros Variable types: 0 continuous, 1416 integer (1416 binary) Root relaxation: objective 0.000000e+00, 400 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 0 332 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 272 - 0.00000 - - 0s 0 0 0.00000 0 343 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 1s 0 0 0.00000 0 263 - 0.00000 - - 1s 0 0 0.00000 0 246 - 0.00000 - - 1s 0 0 0.00000 0 244 - 0.00000 - - 1s 0 0 0.00000 0 266 - 0.00000 - - 2s 0 0 0.00000 0 238 - 0.00000 - - 2s 0 0 0.00000 0 250 - 0.00000 - - 2s 0 0 0.00000 0 230 - 0.00000 - - 2s 0 0 0.00000 0 220 - 0.00000 - - 3s 0 0 0.00000 0 216 - 0.00000 - - 3s 0 0 0.00000 0 225 - 0.00000 - - 3s 0 0 0.00000 0 225 - 0.00000 - - 4s 0 2 0.00000 0 225 - 0.00000 - - 4s 46 27 0.00000 12 278 - 0.00000 - 142 5s 607 127 0.00000 17 250 - 0.00000 - 88.7 10s 612 130 0.00000 18 387 - 0.00000 - 88.0 15s 861 72 0.00000 22 317 - 0.00000 - 166 20s 1304 49 0.00000 26 286 - 0.00000 - 173 25s 1786 41 infeasible 21 - 0.00000 - 174 30s 2194 19 infeasible 23 - 0.00000 - 180 35s Cutting planes: Gomory: 1 Zero half: 11 Explored 2360 nodes (471131 simplex iterations) in 37.07 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