current bounds on the number of colors: 0 -- 43 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:02:12 2012 Optimize a model with 9430 rows, 1350 columns and 29064 nonzeros Presolve time: 0.03s Presolved: 9430 rows, 1350 columns, 29064 nonzeros Variable types: 0 continuous, 1350 integer (1350 binary) Root relaxation: objective 0.000000e+00, 97 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 (337 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 18:02:12 2012 Optimize a model with 4513 rows, 877 columns and 13840 nonzeros Presolve time: 0.01s Presolved: 4513 rows, 877 columns, 13840 nonzeros Variable types: 0 continuous, 877 integer (877 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 26 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (809 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 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:02:12 2012 Optimize a model with 2278 rows, 662 columns and 6920 nonzeros Presolve time: 0.01s Presolved: 2278 rows, 662 columns, 6920 nonzeros Variable types: 0 continuous, 662 integer (662 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 86 - 0.00000 - - 0s 0 0 0.00000 0 58 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1882 simplex iterations) in 0.23 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 18:02:13 2012 Optimize a model with 3172 rows, 748 columns and 9688 nonzeros Presolve time: 0.01s Presolved: 3172 rows, 748 columns, 9688 nonzeros Variable types: 0 continuous, 748 integer (748 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 42 - 0.00000 - - 0s 0 0 0.00000 0 32 - 0.00000 - - 0s 0 0 0.00000 0 181 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 181 - 0.00000 - - 1s 0 0 0.00000 0 181 - 0.00000 - - 1s 0 0 0.00000 0 181 - 0.00000 - - 1s 0 2 0.00000 0 181 - 0.00000 - - 2s Cutting planes: Clique: 51 Zero half: 4 Explored 9 nodes (17645 simplex iterations) in 2.31 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: 7 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:02:15 2012 Optimize a model with 3619 rows, 791 columns and 11072 nonzeros Presolve time: 0.01s Presolved: 3619 rows, 791 columns, 11072 nonzeros Variable types: 0 continuous, 791 integer (791 binary) Root relaxation: objective 0.000000e+00, 86 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 38 - 0.00000 - - 0s 0 0 0.00000 0 36 - 0.00000 - - 0s 0 0 0.00000 0 124 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 68 - 0.00000 - - 0s 0 0 0.00000 0 138 - 0.00000 - - 0s 0 0 0.00000 0 116 - 0.00000 - - 1s 0 0 0.00000 0 166 - 0.00000 - - 1s 0 0 0.00000 0 166 - 0.00000 - - 1s 0 2 0.00000 0 166 - 0.00000 - - 1s Cutting planes: Clique: 49 Zero half: 5 Explored 117 nodes (24910 simplex iterations) in 2.50 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 18:02:18 2012 Optimize a model with 4066 rows, 834 columns and 12456 nonzeros Presolve time: 0.01s Presolved: 4066 rows, 834 columns, 12456 nonzeros Variable types: 0 continuous, 834 integer (834 binary) Root relaxation: objective 0.000000e+00, 94 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 32 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 22 MIR: 4 Zero half: 27 Explored 0 nodes (981 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% optimal solution found: number of colors: 9