current bounds on the number of colors: 0 -- 180 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 16380 rows, 16380 columns and 64800 nonzeros Presolve removed 18 rows and 1620 columns Presolve time: 0.13s Presolved: 16362 rows, 14760 columns, 63180 nonzeros Variable types: 0 continuous, 14760 integer (14760 binary) Root relaxation: objective 0.000000e+00, 297 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 (297 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 -- 90 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:09 2012 Optimize a model with 8280 rows, 8280 columns and 32400 nonzeros Presolve removed 18 rows and 810 columns Presolve time: 0.07s Presolved: 8262 rows, 7470 columns, 31590 nonzeros Variable types: 0 continuous, 7470 integer (7470 binary) Root relaxation: objective 0.000000e+00, 297 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 (297 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:09 2012 Optimize a model with 4140 rows, 4140 columns and 15840 nonzeros Presolve removed 18 rows and 396 columns Presolve time: 0.02s Presolved: 4122 rows, 3744 columns, 15444 nonzeros Variable types: 0 continuous, 3744 integer (3744 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 16:25:09 2012 Optimize a model with 2160 rows, 2160 columns and 7920 nonzeros Presolve removed 18 rows and 198 columns Presolve time: 0.01s Presolved: 2142 rows, 1962 columns, 7722 nonzeros Variable types: 0 continuous, 1962 integer (1962 binary) Root relaxation: objective 0.000000e+00, 283 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 (434 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:09 2012 Optimize a model with 1080 rows, 1080 columns and 3600 nonzeros Presolve removed 18 rows and 90 columns Presolve time: 0.00s Presolved: 1062 rows, 990 columns, 3510 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 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 16:25:09 2012 Optimize a model with 540 rows, 540 columns and 1440 nonzeros Presolve removed 186 rows and 207 columns Presolve time: 0.00s Presolved: 354 rows, 333 columns, 1062 nonzeros Variable types: 0 continuous, 333 integer (333 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 0 153 - 0.00000 - - 0s Explored 0 nodes (543 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 16:25:09 2012 Optimize a model with 720 rows, 720 columns and 2160 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 702 rows, 666 columns, 2106 nonzeros Variable types: 0 continuous, 666 integer (666 binary) Root relaxation: objective 0.000000e+00, 264 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 (351 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