current bounds on the number of colors: 0 -- 46 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:05:40 2012 Optimize a model with 11845 rows, 1571 columns and 36455 nonzeros Presolve time: 0.04s Presolved: 11845 rows, 1571 columns, 36455 nonzeros Variable types: 0 continuous, 1571 integer (1571 binary) Root relaxation: objective 0.000000e+00, 99 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 (263 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:05:40 2012 Optimize a model with 5689 rows, 1019 columns and 17435 nonzeros Presolve time: 0.02s Presolved: 5689 rows, 1019 columns, 17435 nonzeros Variable types: 0 continuous, 1019 integer (1019 binary) Root relaxation: objective 0.000000e+00, 100 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 26 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (589 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:05:40 2012 Optimize a model with 2611 rows, 743 columns and 7925 nonzeros Presolve time: 0.01s Presolved: 2611 rows, 743 columns, 7925 nonzeros Variable types: 0 continuous, 743 integer (743 binary) Root relaxation: objective 0.000000e+00, 95 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 54 - 0.00000 - - 0s 0 0 0.00000 0 56 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1890 simplex iterations) in 0.16 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:05:41 2012 Optimize a model with 4150 rows, 881 columns and 12680 nonzeros Presolve time: 0.01s Presolved: 4150 rows, 881 columns, 12680 nonzeros Variable types: 0 continuous, 881 integer (881 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 52 - 0.00000 - - 0s 0 0 0.00000 0 48 - 0.00000 - - 0s 0 0 0.00000 0 161 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 1s 0 0 0.00000 0 179 - 0.00000 - - 1s 0 0 0.00000 0 179 - 0.00000 - - 1s 0 0 0.00000 0 192 - 0.00000 - - 2s 0 0 0.00000 0 192 - 0.00000 - - 2s 0 2 0.00000 0 192 - 0.00000 - - 2s Cutting planes: Clique: 39 Zero half: 6 Explored 13 nodes (19072 simplex iterations) in 2.68 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:05:43 2012 Optimize a model with 4663 rows, 927 columns and 14265 nonzeros Presolve time: 0.01s Presolved: 4663 rows, 927 columns, 14265 nonzeros Variable types: 0 continuous, 927 integer (927 binary) Root relaxation: objective 0.000000e+00, 103 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 0 0 0.00000 0 57 - 0.00000 - - 0s 0 0 0.00000 0 16 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 2 Explored 0 nodes (4524 simplex iterations) in 0.49 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