current bounds on the number of colors: 0 -- 219 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:03 2012 Optimize a model with 27469 rows, 24121 columns and 105621 nonzeros Presolve removed 20 rows and 2180 columns Presolve time: 0.14s Presolved: 27449 rows, 21941 columns, 103441 nonzeros Variable types: 0 continuous, 21941 integer (21941 binary) Root relaxation: objective 0.000000e+00, 377 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 (377 simplex iterations) in 0.16 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 -- 109 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:04 2012 Optimize a model with 13719 rows, 12076 columns and 52326 nonzeros Presolve removed 20 rows and 1080 columns Presolve time: 0.13s Presolved: 13699 rows, 10996 columns, 51246 nonzeros Variable types: 0 continuous, 10996 integer (10996 binary) Root relaxation: objective 0.000000e+00, 377 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 (377 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:04 2012 Optimize a model with 6969 rows, 6163 columns and 26163 nonzeros Presolve removed 20 rows and 540 columns Presolve time: 0.04s Presolved: 6949 rows, 5623 columns, 25623 nonzeros Variable types: 0 continuous, 5623 integer (5623 binary) Root relaxation: objective 0.000000e+00, 377 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 (377 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:04 2012 Optimize a model with 3469 rows, 3097 columns and 12597 nonzeros Presolve removed 20 rows and 260 columns Presolve time: 0.02s Presolved: 3449 rows, 2837 columns, 12337 nonzeros Variable types: 0 continuous, 2837 integer (2837 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 simplex iterations) in 0.02 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 16:36:04 2012 Optimize a model with 1719 rows, 1564 columns and 5814 nonzeros Presolve removed 20 rows and 120 columns Presolve time: 0.01s Presolved: 1699 rows, 1444 columns, 5694 nonzeros Variable types: 0 continuous, 1444 integer (1444 binary) Root relaxation: objective 0.000000e+00, 354 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 (354 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:04 2012 Optimize a model with 969 rows, 907 columns and 2907 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 949 rows, 847 columns, 2847 nonzeros Variable types: 0 continuous, 847 integer (847 binary) Root relaxation: objective 0.000000e+00, 355 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 (355 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 16:36:04 2012 Optimize a model with 469 rows, 469 columns and 969 nonzeros Presolve removed 469 rows and 469 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 16:36:04 2012 Optimize a model with 719 rows, 688 columns and 1938 nonzeros Presolve removed 223 rows and 245 columns Presolve time: 0.00s Presolved: 496 rows, 443 columns, 1488 nonzeros Variable types: 0 continuous, 443 integer (443 binary) Root relaxation: objective 0.000000e+00, 234 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 0 185 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (744 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 - optimal solution found: number of colors: 3