current bounds on the number of colors: 0 -- 210 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:53 2012 Optimize a model with 26355 rows, 22299 columns and 100485 nonzeros Presolve removed 31 rows and 3255 columns Presolve time: 0.15s Presolved: 26324 rows, 19044 columns, 97230 nonzeros Variable types: 0 continuous, 19044 integer (19044 binary) Root relaxation: objective 0.000000e+00, 356 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 (356 simplex iterations) in 0.17 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:54 2012 Optimize a model with 13158 rows, 11169 columns and 49764 nonzeros Presolve removed 31 rows and 1612 columns Presolve time: 0.11s Presolved: 13127 rows, 9557 columns, 48152 nonzeros Variable types: 0 continuous, 9557 integer (9557 binary) Root relaxation: objective 0.000000e+00, 354 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 (354 simplex iterations) in 0.13 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:54 2012 Optimize a model with 6684 rows, 5709 columns and 24882 nonzeros Presolve removed 31 rows and 806 columns Presolve time: 0.04s Presolved: 6653 rows, 4903 columns, 24076 nonzeros Variable types: 0 continuous, 4903 integer (4903 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 0.05 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:54 2012 Optimize a model with 3447 rows, 2979 columns and 12441 nonzeros Presolve removed 31 rows and 403 columns Presolve time: 0.01s Presolved: 3416 rows, 2576 columns, 12038 nonzeros Variable types: 0 continuous, 2576 integer (2576 binary) Root relaxation: objective 0.000000e+00, 368 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 (578 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 16:32:54 2012 Optimize a model with 1704 rows, 1509 columns and 5742 nonzeros Presolve removed 31 rows and 186 columns Presolve time: 0.01s Presolved: 1673 rows, 1323 columns, 5556 nonzeros Variable types: 0 continuous, 1323 integer (1323 binary) Root relaxation: objective 0.000000e+00, 362 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 (533 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 16:32:54 2012 Optimize a model with 957 rows, 879 columns and 2871 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 926 rows, 786 columns, 2778 nonzeros Variable types: 0 continuous, 786 integer (786 binary) Root relaxation: objective 0.000000e+00, 406 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 (553 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:54 2012 Optimize a model with 459 rows, 459 columns and 957 nonzeros Presolve removed 459 rows and 459 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 16:32:54 2012 Optimize a model with 708 rows, 669 columns and 1914 nonzeros Presolve removed 214 rows and 247 columns Presolve time: 0.00s Presolved: 494 rows, 422 columns, 1482 nonzeros Variable types: 0 continuous, 422 integer (422 binary) Root relaxation: objective 0.000000e+00, 203 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 0 175 - 0.00000 - - 0s Explored 0 nodes (660 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