current bounds on the number of colors: 0 -- 108 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:07 2012 Optimize a model with 32886 rows, 6439 columns and 104166 nonzeros Presolve time: 0.15s Presolved: 32886 rows, 6439 columns, 104166 nonzeros Variable types: 0 continuous, 6439 integer (6439 binary) Root relaxation: objective 0.000000e+00, 287 iterations, 0.04 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 (524 simplex iterations) in 0.23 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 -- 54 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:08 2012 Optimize a model with 16497 rows, 3523 columns and 52083 nonzeros Presolve time: 0.07s Presolved: 16497 rows, 3523 columns, 52083 nonzeros Variable types: 0 continuous, 3523 integer (3523 binary) Root relaxation: objective 0.000000e+00, 288 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 (521 simplex iterations) in 0.11 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:08 2012 Optimize a model with 7999 rows, 2011 columns and 25077 nonzeros Presolve time: 0.02s Presolved: 7999 rows, 2011 columns, 25077 nonzeros Variable types: 0 continuous, 2011 integer (2011 binary) Root relaxation: objective 0.000000e+00, 221 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 (429 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:08 2012 Optimize a model with 3750 rows, 1255 columns and 11574 nonzeros Presolve time: 0.01s Presolved: 3750 rows, 1255 columns, 11574 nonzeros Variable types: 0 continuous, 1255 integer (1255 binary) Root relaxation: objective 0.000000e+00, 222 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 76 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2048 simplex iterations) in 0.10 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 Thu Dec 13 20:01:09 2012 Optimize a model with 1929 rows, 931 columns and 5787 nonzeros Presolve time: 0.00s Presolved: 1929 rows, 931 columns, 5787 nonzeros Variable types: 0 continuous, 931 integer (931 binary) Root relaxation: objective 0.000000e+00, 244 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 0 216 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3291 simplex iterations) in 0.34 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: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:09 2012 Optimize a model with 2536 rows, 1039 columns and 7716 nonzeros Presolve time: 0.01s Presolved: 2536 rows, 1039 columns, 7716 nonzeros Variable types: 0 continuous, 1039 integer (1039 binary) Root relaxation: objective 0.000000e+00, 235 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 0 216 - 0.00000 - - 0s 0 0 0.00000 0 171 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 288 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 282 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 2 0.00000 0 296 - 0.00000 - - 3s Cutting planes: Clique: 17 Zero half: 23 Explored 123 nodes (40910 simplex iterations) in 4.80 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:14 2012 Optimize a model with 3143 rows, 1147 columns and 9645 nonzeros Presolve time: 0.01s Presolved: 3143 rows, 1147 columns, 9645 nonzeros Variable types: 0 continuous, 1147 integer (1147 binary) Root relaxation: objective 0.000000e+00, 230 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 126 - 0.00000 - - 0s 0 0 0.00000 0 184 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (8544 simplex iterations) in 0.76 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: 5