current bounds on the number of colors: 0 -- 179 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:53 2012 Optimize a model with 16021 rows, 16109 columns and 63457 nonzeros Presolve removed 19 rows and 1691 columns Presolve time: 0.12s Presolved: 16002 rows, 14418 columns, 61766 nonzeros Variable types: 0 continuous, 14418 integer (14418 binary) Root relaxation: objective 0.000000e+00, 298 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 (298 simplex iterations) in 0.14 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 8011 rows, 8054 columns and 31372 nonzeros Presolve removed 19 rows and 836 columns Presolve time: 0.07s Presolved: 7992 rows, 7218 columns, 30536 nonzeros Variable types: 0 continuous, 7218 integer (7218 binary) Root relaxation: objective 0.000000e+00, 301 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 (301 simplex iterations) in 0.08 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 4095 rows, 4116 columns and 15686 nonzeros Presolve removed 19 rows and 418 columns Presolve time: 0.02s Presolved: 4076 rows, 3698 columns, 15268 nonzeros Variable types: 0 continuous, 3698 integer (3698 binary) Root relaxation: objective 0.000000e+00, 298 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 (298 simplex iterations) in 0.03 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 2137 rows, 2147 columns and 7843 nonzeros Presolve removed 19 rows and 209 columns Presolve time: 0.01s Presolved: 2118 rows, 1938 columns, 7634 nonzeros Variable types: 0 continuous, 1938 integer (1938 binary) Root relaxation: objective 0.000000e+00, 288 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 (288 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 1069 rows, 1073 columns and 3565 nonzeros Presolve removed 19 rows and 95 columns Presolve time: 0.00s Presolved: 1050 rows, 978 columns, 3470 nonzeros Variable types: 0 continuous, 978 integer (978 binary) Root relaxation: objective 0.000000e+00, 276 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 (276 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 535 rows, 536 columns and 1426 nonzeros Presolve removed 187 rows and 210 columns Presolve time: 0.00s Presolved: 348 rows, 326 columns, 1044 nonzeros Variable types: 0 continuous, 326 integer (326 binary) Root relaxation: objective 0.000000e+00, 179 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 0 144 - 0.00000 - - 0s Explored 0 nodes (537 simplex iterations) in 0.01 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 713 rows, 715 columns and 2139 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 694 rows, 658 columns, 2082 nonzeros Variable types: 0 continuous, 658 integer (658 binary) Root relaxation: objective 0.000000e+00, 274 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 (274 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% optimal solution found: number of colors: 3