current bounds on the number of colors: 0 -- 148 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:38 2012 Optimize a model with 6882 rows, 11043 columns and 31154 nonzeros Presolve removed 30 rows and 2220 columns Presolve time: 0.10s Presolved: 6852 rows, 8823 columns, 28934 nonzeros Variable types: 0 continuous, 8823 integer (8823 binary) Root relaxation: objective 0.000000e+00, 190 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 (190 simplex iterations) in 0.11 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 -- 74 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:38 2012 Optimize a model with 3515 rows, 5567 columns and 15577 nonzeros Presolve removed 30 rows and 1110 columns Presolve time: 0.03s Presolved: 3485 rows, 4457 columns, 14467 nonzeros Variable types: 0 continuous, 4457 integer (4457 binary) Root relaxation: objective 0.000000e+00, 190 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 (190 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 -- 37 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:39 2012 Optimize a model with 1786 rows, 2755 columns and 7578 nonzeros Presolve removed 30 rows and 540 columns Presolve time: 0.01s Presolved: 1756 rows, 2215 columns, 7038 nonzeros Variable types: 0 continuous, 2215 integer (2215 binary) Root relaxation: objective 0.000000e+00, 190 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 (190 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:39 2012 Optimize a model with 967 rows, 1423 columns and 3789 nonzeros Presolve removed 30 rows and 270 columns Presolve time: 0.00s Presolved: 937 rows, 1153 columns, 3519 nonzeros Variable types: 0 continuous, 1153 integer (1153 binary) Root relaxation: objective 0.000000e+00, 183 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 (183 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:39 2012 Optimize a model with 512 rows, 683 columns and 1684 nonzeros Presolve removed 30 rows and 120 columns Presolve time: 0.00s Presolved: 482 rows, 563 columns, 1564 nonzeros Variable types: 0 continuous, 563 integer (563 binary) Root relaxation: objective 0.000000e+00, 167 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 (167 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:39 2012 Optimize a model with 330 rows, 387 columns and 842 nonzeros Presolve removed 172 rows and 214 columns Presolve time: 0.00s Presolved: 158 rows, 173 columns, 474 nonzeros Variable types: 0 continuous, 173 integer (173 binary) Root relaxation: objective 0.000000e+00, 70 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 (70 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:39 2012 Optimize a model with 239 rows, 239 columns and 421 nonzeros Presolve removed 239 rows and 239 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 - optimal solution found: number of colors: 2