current bounds on the number of colors: 0 -- 91 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:39 2012 Optimize a model with 17956 rows, 4492 columns and 57690 nonzeros Presolve time: 0.10s Presolved: 17956 rows, 4492 columns, 57690 nonzeros Variable types: 0 continuous, 4492 integer (4492 binary) Root relaxation: objective 0.000000e+00, 294 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 (483 simplex iterations) in 0.14 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 -- 45 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:39 2012 Optimize a model with 8825 rows, 2399 columns and 28204 nonzeros Presolve time: 0.03s Presolved: 8825 rows, 2399 columns, 28204 nonzeros Variable types: 0 continuous, 2399 integer (2399 binary) Root relaxation: objective 0.000000e+00, 189 iterations, 0.00 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 (351 simplex iterations) in 0.05 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:39 2012 Optimize a model with 4458 rows, 1398 columns and 14102 nonzeros Presolve time: 0.01s Presolved: 4458 rows, 1398 columns, 14102 nonzeros Variable types: 0 continuous, 1398 integer (1398 binary) Root relaxation: objective 0.000000e+00, 188 iterations, 0.00 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 (351 simplex iterations) in 0.02 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 Thu Dec 13 19:45:39 2012 Optimize a model with 2076 rows, 852 columns and 6410 nonzeros Presolve time: 0.01s Presolved: 2076 rows, 852 columns, 6410 nonzeros Variable types: 0 continuous, 852 integer (852 binary) Root relaxation: objective 0.000000e+00, 202 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 66 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1195 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:39 2012 Optimize a model with 885 rows, 579 columns and 2564 nonzeros Presolve removed 91 rows and 91 columns Presolve time: 0.00s Presolved: 794 rows, 488 columns, 2382 nonzeros Variable types: 0 continuous, 488 integer (488 binary) Root relaxation: objective 0.000000e+00, 93 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 91 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (388 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:39 2012 Optimize a model with 1282 rows, 670 columns and 3846 nonzeros Presolve time: 0.00s Presolved: 1282 rows, 670 columns, 3846 nonzeros Variable types: 0 continuous, 670 integer (670 binary) Root relaxation: objective 0.000000e+00, 199 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 0 180 - 0.00000 - - 0s 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1969 simplex iterations) in 0.13 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 Thu Dec 13 19:45:40 2012 Optimize a model with 1679 rows, 761 columns and 5128 nonzeros Presolve time: 0.00s Presolved: 1679 rows, 761 columns, 5128 nonzeros Variable types: 0 continuous, 761 integer (761 binary) Root relaxation: objective 0.000000e+00, 210 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 0 174 - 0.00000 - - 0s 0 0 0.00000 0 110 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 169 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 0s 0 2 0.00000 0 215 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 25 Explored 129 nodes (22247 simplex iterations) in 1.54 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