current bounds on the number of colors: 0 -- 204 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:03 2012 Optimize a model with 21114 rows, 21013 columns and 83538 nonzeros Presolve removed 32 rows and 3264 columns Presolve time: 0.13s Presolved: 21082 rows, 17749 columns, 80274 nonzeros Variable types: 0 continuous, 17749 integer (17749 binary) Root relaxation: objective 0.000000e+00, 324 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 (324 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 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:03 2012 Optimize a model with 10659 rows, 10609 columns and 41769 nonzeros Presolve removed 32 rows and 1632 columns Presolve time: 0.10s Presolved: 10627 rows, 8977 columns, 40137 nonzeros Variable types: 0 continuous, 8977 integer (8977 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:04 2012 Optimize a model with 5329 rows, 5305 columns and 20475 nonzeros Presolve removed 32 rows and 800 columns Presolve time: 0.03s Presolved: 5297 rows, 4505 columns, 19675 nonzeros Variable types: 0 continuous, 4505 integer (4505 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:04 2012 Optimize a model with 2664 rows, 2653 columns and 9828 nonzeros Presolve removed 32 rows and 384 columns Presolve time: 0.01s Presolved: 2632 rows, 2269 columns, 9444 nonzeros Variable types: 0 continuous, 2269 integer (2269 binary) Root relaxation: objective 0.000000e+00, 325 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 Sat Dec 15 16:31:04 2012 Optimize a model with 1434 rows, 1429 columns and 4914 nonzeros Presolve removed 32 rows and 192 columns Presolve time: 0.00s Presolved: 1402 rows, 1237 columns, 4722 nonzeros Variable types: 0 continuous, 1237 integer (1237 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 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 16:31:04 2012 Optimize a model with 819 rows, 817 columns and 2457 nonzeros Presolve removed 32 rows and 96 columns Presolve time: 0.00s Presolved: 787 rows, 721 columns, 2361 nonzeros Variable types: 0 continuous, 721 integer (721 binary) Root relaxation: objective 0.000000e+00, 316 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 (316 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% current bounds on the number of colors: 0 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:04 2012 Optimize a model with 409 rows, 409 columns and 819 nonzeros Presolve removed 409 rows and 409 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 16:31:04 2012 Optimize a model with 614 rows, 613 columns and 1638 nonzeros Presolve removed 208 rows and 242 columns Presolve time: 0.00s Presolved: 406 rows, 371 columns, 1218 nonzeros Variable types: 0 continuous, 371 integer (371 binary) Root relaxation: objective 0.000000e+00, 187 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 0 168 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (629 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