current bounds on the number of colors: 0 -- 153 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:13 2012 Optimize a model with 48337 rows, 12262 columns and 156180 nonzeros Presolve time: 0.17s Presolved: 48337 rows, 12262 columns, 156180 nonzeros Variable types: 0 continuous, 12262 integer (12262 binary) Root relaxation: objective 0.000000e+00, 577 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 (934 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 -- 76 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:14 2012 Optimize a model with 24245 rows, 6448 columns and 78090 nonzeros Presolve time: 0.13s Presolved: 24245 rows, 6448 columns, 78090 nonzeros Variable types: 0 continuous, 6448 integer (6448 binary) Root relaxation: objective 0.000000e+00, 395 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 (719 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 -- 38 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:14 2012 Optimize a model with 12199 rows, 3541 columns and 39045 nonzeros Presolve time: 0.04s Presolved: 12199 rows, 3541 columns, 39045 nonzeros Variable types: 0 continuous, 3541 integer (3541 binary) Root relaxation: objective 0.000000e+00, 330 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 (614 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 -- 19 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:15 2012 Optimize a model with 5859 rows, 2011 columns and 18495 nonzeros Presolve time: 0.02s Presolved: 5859 rows, 2011 columns, 18495 nonzeros Variable types: 0 continuous, 2011 integer (2011 binary) Root relaxation: objective 0.000000e+00, 323 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 (598 simplex iterations) in 0.03 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:15 2012 Optimize a model with 2689 rows, 1246 columns and 8220 nonzeros Presolve time: 0.01s Presolved: 2689 rows, 1246 columns, 8220 nonzeros Variable types: 0 continuous, 1246 integer (1246 binary) Root relaxation: objective 0.000000e+00, 339 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 0 290 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 275 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 1s 0 0 0.00000 0 216 - 0.00000 - - 1s 0 0 0.00000 0 215 - 0.00000 - - 1s 0 0 0.00000 0 212 - 0.00000 - - 1s 0 0 0.00000 0 216 - 0.00000 - - 1s 0 0 0.00000 0 204 - 0.00000 - - 2s 0 0 0.00000 0 196 - 0.00000 - - 2s 0 0 0.00000 0 196 - 0.00000 - - 2s 0 0 0.00000 0 196 - 0.00000 - - 2s 0 2 0.00000 0 196 - 0.00000 - - 2s * 546 1 24 0.0000000 0.00000 0.0% 61.3 4s Cutting planes: Zero half: 21 Explored 547 nodes (64705 simplex iterations) in 4.35 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:19 2012 Optimize a model with 1421 rows, 940 columns and 4110 nonzeros Presolve removed 153 rows and 153 columns Presolve time: 0.00s Presolved: 1268 rows, 787 columns, 3804 nonzeros Variable types: 0 continuous, 787 integer (787 binary) Root relaxation: objective 0.000000e+00, 162 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 0 153 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (636 simplex iterations) in 0.01 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:51:19 2012 Optimize a model with 2055 rows, 1093 columns and 6165 nonzeros Presolve time: 0.01s Presolved: 2055 rows, 1093 columns, 6165 nonzeros Variable types: 0 continuous, 1093 integer (1093 binary) Root relaxation: objective 0.000000e+00, 362 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 0 298 - 0.00000 - - 0s 0 0 0.00000 0 333 - 0.00000 - - 0s 0 0 0.00000 0 380 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 0s 0 0 0.00000 0 371 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 593 Explored 0 nodes (10772 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 - optimal solution found: number of colors: 4