current bounds on the number of colors: 0 -- 155 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:56:41 2012 Optimize a model with 45893 rows, 12529 columns and 149149 nonzeros Presolve time: 0.16s Presolved: 45893 rows, 12529 columns, 149149 nonzeros Variable types: 0 continuous, 12529 integer (12529 binary) Root relaxation: objective 0.000000e+00, 463 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 (794 simplex iterations) in 0.25 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 -- 77 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:56:42 2012 Optimize a model with 22727 rows, 6484 columns and 73606 nonzeros Presolve time: 0.12s Presolved: 22727 rows, 6484 columns, 73606 nonzeros Variable types: 0 continuous, 6484 integer (6484 binary) Root relaxation: objective 0.000000e+00, 434 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 (754 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 18:56:43 2012 Optimize a model with 11441 rows, 3539 columns and 36803 nonzeros Presolve time: 0.04s Presolved: 11441 rows, 3539 columns, 36803 nonzeros Variable types: 0 continuous, 3539 integer (3539 binary) Root relaxation: objective 0.000000e+00, 318 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 (571 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 18:56:43 2012 Optimize a model with 5501 rows, 1989 columns and 17433 nonzeros Presolve time: 0.02s Presolved: 5501 rows, 1989 columns, 17433 nonzeros Variable types: 0 continuous, 1989 integer (1989 binary) Root relaxation: objective 0.000000e+00, 346 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 (616 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 18:56:43 2012 Optimize a model with 2531 rows, 1214 columns and 7748 nonzeros Presolve time: 0.01s Presolved: 2531 rows, 1214 columns, 7748 nonzeros Variable types: 0 continuous, 1214 integer (1214 binary) Root relaxation: objective 0.000000e+00, 364 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 0 300 - 0.00000 - - 0s 0 0 0.00000 0 278 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 277 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 0s 0 0 0.00000 0 291 - 0.00000 - - 1s 0 0 0.00000 0 321 - 0.00000 - - 1s 0 0 0.00000 0 282 - 0.00000 - - 2s 0 0 0.00000 0 287 - 0.00000 - - 2s 0 0 0.00000 0 287 - 0.00000 - - 2s 0 2 0.00000 0 287 - 0.00000 - - 2s * 167 1 26 0.0000000 0.00000 0.0% 77.1 3s Cutting planes: Zero half: 29 Explored 168 nodes (37346 simplex iterations) in 3.39 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 18:56:46 2012 Optimize a model with 1343 rows, 904 columns and 3874 nonzeros Presolve removed 155 rows and 155 columns Presolve time: 0.00s Presolved: 1188 rows, 749 columns, 3564 nonzeros Variable types: 0 continuous, 749 integer (749 binary) Root relaxation: objective 0.000000e+00, 163 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 0 155 - 0.00000 - - 0s Explored 0 nodes (671 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:56:46 2012 Optimize a model with 1937 rows, 1059 columns and 5811 nonzeros Presolve time: 0.00s Presolved: 1937 rows, 1059 columns, 5811 nonzeros Variable types: 0 continuous, 1059 integer (1059 binary) Root relaxation: objective 0.000000e+00, 360 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 0 302 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 0s 0 0 0.00000 0 349 - 0.00000 - - 0s 0 0 0.00000 0 361 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 1s 0 0 0.00000 0 337 - 0.00000 - - 1s 0 0 0.00000 0 357 - 0.00000 - - 1s 0 0 0.00000 0 368 - 0.00000 - - 2s 0 0 infeasible 0 - 0.10000 - - 2s Cutting planes: Zero half: 13 Explored 0 nodes (20003 simplex iterations) in 2.07 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