current bounds on the number of colors: 0 -- 178 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:49 2012 Optimize a model with 15041 rows, 16009 columns and 60431 nonzeros Presolve removed 24 rows and 2136 columns Presolve time: 0.12s Presolved: 15017 rows, 13873 columns, 58295 nonzeros Variable types: 0 continuous, 13873 integer (13873 binary) Root relaxation: objective 0.000000e+00, 276 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 (403 simplex iterations) in 0.15 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:50 2012 Optimize a model with 7526 rows, 7999 columns and 29876 nonzeros Presolve removed 24 rows and 1056 columns Presolve time: 0.07s Presolved: 7502 rows, 6943 columns, 28820 nonzeros Variable types: 0 continuous, 6943 integer (6943 binary) Root relaxation: objective 0.000000e+00, 274 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 (388 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:50 2012 Optimize a model with 3852 rows, 4083 columns and 14938 nonzeros Presolve removed 24 rows and 528 columns Presolve time: 0.02s Presolved: 3828 rows, 3555 columns, 14410 nonzeros Variable types: 0 continuous, 3555 integer (3555 binary) Root relaxation: objective 0.000000e+00, 272 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 (272 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 16:24:50 2012 Optimize a model with 2015 rows, 2125 columns and 7469 nonzeros Presolve removed 24 rows and 264 columns Presolve time: 0.01s Presolved: 1991 rows, 1861 columns, 7205 nonzeros Variable types: 0 continuous, 1861 integer (1861 binary) Root relaxation: objective 0.000000e+00, 271 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 (271 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:50 2012 Optimize a model with 1013 rows, 1057 columns and 3395 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 989 rows, 937 columns, 3275 nonzeros Variable types: 0 continuous, 937 integer (937 binary) Root relaxation: objective 0.000000e+00, 253 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 (253 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 16:24:50 2012 Optimize a model with 512 rows, 523 columns and 1358 nonzeros Presolve removed 194 rows and 226 columns Presolve time: 0.00s Presolved: 318 rows, 297 columns, 954 nonzeros Variable types: 0 continuous, 297 integer (297 binary) Root relaxation: objective 0.000000e+00, 155 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 0 135 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (502 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 16:24:50 2012 Optimize a model with 679 rows, 701 columns and 2037 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 655 rows, 629 columns, 1965 nonzeros Variable types: 0 continuous, 629 integer (629 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 0.00 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