current bounds on the number of colors: 0 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 3340 rows, 5732 columns and 15370 nonzeros Presolve removed 37 rows and 1961 columns Presolve time: 0.04s Presolved: 3303 rows, 3771 columns, 13409 nonzeros Variable types: 0 continuous, 3771 integer (3771 binary) Root relaxation: objective 0.000000e+00, 119 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 (119 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 1693 rows, 2843 columns and 7540 nonzeros Presolve removed 37 rows and 962 columns Presolve time: 0.01s Presolved: 1656 rows, 1881 columns, 6578 nonzeros Variable types: 0 continuous, 1881 integer (1881 binary) Root relaxation: objective 0.000000e+00, 119 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 (119 simplex iterations) in 0.01 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 900 rows, 1452 columns and 3770 nonzeros Presolve removed 37 rows and 481 columns Presolve time: 0.00s Presolved: 863 rows, 971 columns, 3289 nonzeros Variable types: 0 continuous, 971 integer (971 binary) Root relaxation: objective 0.000000e+00, 122 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 (122 simplex iterations) in 0.01 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:36 2012 Optimize a model with 473 rows, 703 columns and 1740 nonzeros Presolve removed 37 rows and 222 columns Presolve time: 0.00s Presolved: 436 rows, 481 columns, 1518 nonzeros Variable types: 0 continuous, 481 integer (481 binary) Root relaxation: objective 0.000000e+00, 119 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 (119 simplex iterations) in 0.00 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:37 2012 Optimize a model with 290 rows, 382 columns and 870 nonzeros Presolve removed 37 rows and 111 columns Presolve time: 0.00s Presolved: 253 rows, 271 columns, 759 nonzeros Variable types: 0 continuous, 271 integer (271 binary) Root relaxation: objective 0.000000e+00, 105 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 (105 simplex iterations) in 0.00 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:37 2012 Optimize a model with 168 rows, 168 columns and 290 nonzeros Presolve removed 168 rows and 168 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 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: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:37 2012 Optimize a model with 229 rows, 275 columns and 580 nonzeros Presolve removed 113 rows and 153 columns Presolve time: 0.00s Presolved: 116 rows, 122 columns, 348 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Root relaxation: objective 0.000000e+00, 61 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 Explored 0 nodes (185 simplex iterations) in 0.00 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: 3