current bounds on the number of colors: 0 -- 42 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:01:47 2012 Optimize a model with 9681 rows, 1341 columns and 29799 nonzeros Presolve time: 0.03s Presolved: 9681 rows, 1341 columns, 29799 nonzeros Variable types: 0 continuous, 1341 integer (1341 binary) Root relaxation: objective 0.000000e+00, 107 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 (427 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:01:47 2012 Optimize a model with 4632 rows, 879 columns and 14190 nonzeros Presolve time: 0.01s Presolved: 4632 rows, 879 columns, 14190 nonzeros Variable types: 0 continuous, 879 integer (879 binary) Root relaxation: objective 0.000000e+00, 90 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 36 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (594 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 Thu Dec 13 18:01:47 2012 Optimize a model with 2337 rows, 669 columns and 7095 nonzeros Presolve time: 0.01s Presolved: 2337 rows, 669 columns, 7095 nonzeros Variable types: 0 continuous, 669 integer (669 binary) Root relaxation: objective 0.000000e+00, 88 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 64 - 0.00000 - - 0s 0 0 0.00000 0 74 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1162 simplex iterations) in 0.14 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: 5 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:01:47 2012 Optimize a model with 3255 rows, 753 columns and 9933 nonzeros Presolve time: 0.01s Presolved: 3255 rows, 753 columns, 9933 nonzeros Variable types: 0 continuous, 753 integer (753 binary) Root relaxation: objective 0.000000e+00, 85 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 34 - 0.00000 - - 0s 0 0 0.00000 0 30 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1334 simplex iterations) in 0.17 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: 7 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:01:47 2012 Optimize a model with 3714 rows, 795 columns and 11352 nonzeros Presolve time: 0.01s Presolved: 3714 rows, 795 columns, 11352 nonzeros Variable types: 0 continuous, 795 integer (795 binary) Root relaxation: objective 0.000000e+00, 87 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 44 - 0.00000 - - 0s 0 0 0.00000 0 16 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 191 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 1s 0 0 0.00000 0 117 - 0.00000 - - 1s 0 0 0.00000 0 164 - 0.00000 - - 1s 0 0 0.00000 0 171 - 0.00000 - - 2s 0 0 0.00000 0 194 - 0.00000 - - 2s 0 0 0.00000 0 174 - 0.00000 - - 2s 0 2 0.00000 0 174 - 0.00000 - - 2s Cutting planes: Clique: 47 Zero half: 10 Explored 13 nodes (23529 simplex iterations) in 2.91 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 8 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:01:50 2012 Optimize a model with 4173 rows, 837 columns and 12771 nonzeros Presolve time: 0.01s Presolved: 4173 rows, 837 columns, 12771 nonzeros Variable types: 0 continuous, 837 integer (837 binary) Root relaxation: objective 0.000000e+00, 89 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 26 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 17 MIR: 10 Zero half: 23 Explored 0 nodes (1520 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% optimal solution found: number of colors: 9