current bounds on the number of colors: 0 -- 210 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:55 2012 Optimize a model with 23415 rows, 22271 columns and 91665 nonzeros Presolve removed 17 rows and 1785 columns Presolve time: 0.14s Presolved: 23398 rows, 20486 columns, 89880 nonzeros Variable types: 0 continuous, 20486 integer (20486 binary) Root relaxation: objective 0.000000e+00, 347 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 (347 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 16:32:56 2012 Optimize a model with 11702 rows, 11141 columns and 45396 nonzeros Presolve removed 17 rows and 884 columns Presolve time: 0.11s Presolved: 11685 rows, 10257 columns, 44512 nonzeros Variable types: 0 continuous, 10257 integer (10257 binary) Root relaxation: objective 0.000000e+00, 347 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 (347 simplex iterations) in 0.12 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 16:32:56 2012 Optimize a model with 5956 rows, 5681 columns and 22698 nonzeros Presolve removed 17 rows and 442 columns Presolve time: 0.04s Presolved: 5939 rows, 5239 columns, 22256 nonzeros Variable types: 0 continuous, 5239 integer (5239 binary) Root relaxation: objective 0.000000e+00, 345 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 (345 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:56 2012 Optimize a model with 3083 rows, 2951 columns and 11349 nonzeros Presolve removed 17 rows and 221 columns Presolve time: 0.01s Presolved: 3066 rows, 2730 columns, 11128 nonzeros Variable types: 0 continuous, 2730 integer (2730 binary) Root relaxation: objective 0.000000e+00, 361 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 (536 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 16:32:56 2012 Optimize a model with 1536 rows, 1481 columns and 5238 nonzeros Presolve removed 17 rows and 102 columns Presolve time: 0.01s Presolved: 1519 rows, 1379 columns, 5136 nonzeros Variable types: 0 continuous, 1379 integer (1379 binary) Root relaxation: objective 0.000000e+00, 363 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 (363 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 16:32:56 2012 Optimize a model with 873 rows, 851 columns and 2619 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 856 rows, 800 columns, 2568 nonzeros Variable types: 0 continuous, 800 integer (800 binary) Root relaxation: objective 0.000000e+00, 322 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 (427 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 16:32:56 2012 Optimize a model with 431 rows, 431 columns and 873 nonzeros Presolve removed 431 rows and 431 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 16:32:56 2012 Optimize a model with 652 rows, 641 columns and 1746 nonzeros Presolve removed 220 rows and 242 columns Presolve time: 0.00s Presolved: 432 rows, 399 columns, 1296 nonzeros Variable types: 0 continuous, 399 integer (399 binary) Root relaxation: objective 0.000000e+00, 209 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 0 176 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (657 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