current bounds on the number of colors: 0 -- 168 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 14280 rows, 14280 columns and 56448 nonzeros Presolve removed 25 rows and 2100 columns Presolve time: 0.11s Presolved: 14255 rows, 12180 columns, 54348 nonzeros Variable types: 0 continuous, 12180 integer (12180 binary) Root relaxation: objective 0.000000e+00, 260 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 (396 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 -- 84 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:54 2012 Optimize a model with 7224 rows, 7224 columns and 28224 nonzeros Presolve removed 25 rows and 1050 columns Presolve time: 0.06s Presolved: 7199 rows, 6174 columns, 27174 nonzeros Variable types: 0 continuous, 6174 integer (6174 binary) Root relaxation: objective 0.000000e+00, 263 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 (380 simplex iterations) in 0.07 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:54 2012 Optimize a model with 3696 rows, 3696 columns and 14112 nonzeros Presolve removed 25 rows and 525 columns Presolve time: 0.02s Presolved: 3671 rows, 3171 columns, 13587 nonzeros Variable types: 0 continuous, 3171 integer (3171 binary) Root relaxation: objective 0.000000e+00, 257 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 (257 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:54 2012 Optimize a model with 1848 rows, 1848 columns and 6720 nonzeros Presolve removed 25 rows and 250 columns Presolve time: 0.01s Presolved: 1823 rows, 1598 columns, 6470 nonzeros Variable types: 0 continuous, 1598 integer (1598 binary) Root relaxation: objective 0.000000e+00, 262 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 (262 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:54 2012 Optimize a model with 1008 rows, 1008 columns and 3360 nonzeros Presolve removed 25 rows and 125 columns Presolve time: 0.00s Presolved: 983 rows, 883 columns, 3235 nonzeros Variable types: 0 continuous, 883 integer (883 binary) Root relaxation: objective 0.000000e+00, 231 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 (231 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 16:22:54 2012 Optimize a model with 504 rows, 504 columns and 1344 nonzeros Presolve removed 174 rows and 202 columns Presolve time: 0.00s Presolved: 330 rows, 302 columns, 990 nonzeros Variable types: 0 continuous, 302 integer (302 binary) Root relaxation: objective 0.000000e+00, 154 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 0 134 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (499 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 16:22:54 2012 Optimize a model with 672 rows, 672 columns and 2016 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 647 rows, 597 columns, 1941 nonzeros Variable types: 0 continuous, 597 integer (597 binary) Root relaxation: objective 0.000000e+00, 243 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 (243 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