current bounds on the number of colors: 0 -- 96 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:48 2012 Optimize a model with 10896 rows, 4833 columns and 37008 nonzeros Presolve removed 1 rows and 48 columns Presolve time: 0.07s Presolved: 10895 rows, 4785 columns, 36960 nonzeros Variable types: 0 continuous, 4785 integer (4785 binary) Root relaxation: objective 0.000000e+00, 229 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 (229 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 -- 48 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:48 2012 Optimize a model with 5496 rows, 2529 columns and 18504 nonzeros Presolve removed 1 rows and 24 columns Presolve time: 0.02s Presolved: 5495 rows, 2505 columns, 18480 nonzeros Variable types: 0 continuous, 2505 integer (2505 binary) Root relaxation: objective 0.000000e+00, 228 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 (383 simplex iterations) in 0.04 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 -- 24 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:48 2012 Optimize a model with 2796 rows, 1377 columns and 9252 nonzeros Presolve removed 1 rows and 12 columns Presolve time: 0.01s Presolved: 2795 rows, 1365 columns, 9240 nonzeros Variable types: 0 continuous, 1365 integer (1365 binary) Root relaxation: objective 0.000000e+00, 197 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 (325 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 -- 12 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:48 2012 Optimize a model with 1446 rows, 801 columns and 4626 nonzeros Presolve removed 1 rows and 6 columns Presolve time: 0.00s Presolved: 1445 rows, 795 columns, 4620 nonzeros Variable types: 0 continuous, 795 integer (795 binary) Root relaxation: objective 0.000000e+00, 217 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 (373 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 Fri Dec 14 18:23:48 2012 Optimize a model with 771 rows, 513 columns and 2313 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 770 rows, 510 columns, 2310 nonzeros Variable types: 0 continuous, 510 integer (510 binary) Root relaxation: objective 0.000000e+00, 220 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 0 156 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 0s 0 0 0.00000 0 161 - 0.00000 - - 0s 0 0 0.00000 0 164 - 0.00000 - - 0s 0 0 0.00000 0 130 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 183 - 0.00000 - - 0s 0 0 0.00000 0 183 - 0.00000 - - 0s 0 2 0.00000 0 172 - 0.00000 - - 0s Cutting planes: Zero half: 10 Explored 15 nodes (7743 simplex iterations) in 0.39 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: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:48 2012 Optimize a model with 996 rows, 609 columns and 3084 nonzeros Presolve removed 1 rows and 4 columns Presolve time: 0.00s Presolved: 995 rows, 605 columns, 3080 nonzeros Variable types: 0 continuous, 605 integer (605 binary) Root relaxation: objective 0.000000e+00, 207 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 (389 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% optimal solution found: number of colors: 4