current bounds on the number of colors: 0 -- 193 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:18 2012 Optimize a model with 20737 rows, 18742 columns and 80160 nonzeros Presolve removed 22 rows and 2112 columns Presolve time: 0.13s Presolved: 20715 rows, 16630 columns, 78048 nonzeros Variable types: 0 continuous, 16630 integer (16630 binary) Root relaxation: objective 0.000000e+00, 316 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 (316 simplex iterations) in 0.14 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:18 2012 Optimize a model with 10465 rows, 9478 columns and 40080 nonzeros Presolve removed 22 rows and 1056 columns Presolve time: 0.09s Presolved: 10443 rows, 8422 columns, 39024 nonzeros Variable types: 0 continuous, 8422 integer (8422 binary) Root relaxation: objective 0.000000e+00, 316 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 (316 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:19 2012 Optimize a model with 5329 rows, 4846 columns and 20040 nonzeros Presolve removed 22 rows and 528 columns Presolve time: 0.03s Presolved: 5307 rows, 4318 columns, 19512 nonzeros Variable types: 0 continuous, 4318 integer (4318 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 0.04 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 Sat Dec 15 16:28:19 2012 Optimize a model with 2761 rows, 2530 columns and 10020 nonzeros Presolve removed 22 rows and 264 columns Presolve time: 0.01s Presolved: 2739 rows, 2266 columns, 9756 nonzeros Variable types: 0 continuous, 2266 integer (2266 binary) Root relaxation: objective 0.000000e+00, 318 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 (318 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 16:28:19 2012 Optimize a model with 1477 rows, 1372 columns and 5010 nonzeros Presolve removed 22 rows and 132 columns Presolve time: 0.01s Presolved: 1455 rows, 1240 columns, 4878 nonzeros Variable types: 0 continuous, 1240 integer (1240 binary) Root relaxation: objective 0.000000e+00, 313 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 (313 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 16:28:19 2012 Optimize a model with 835 rows, 793 columns and 2505 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 813 rows, 727 columns, 2439 nonzeros Variable types: 0 continuous, 727 integer (727 binary) Root relaxation: objective 0.000000e+00, 307 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 (307 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 16:28:19 2012 Optimize a model with 407 rows, 407 columns and 835 nonzeros Presolve removed 407 rows and 407 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 16:28:19 2012 Optimize a model with 621 rows, 600 columns and 1670 nonzeros Presolve removed 197 rows and 221 columns Presolve time: 0.00s Presolved: 424 rows, 379 columns, 1272 nonzeros Variable types: 0 continuous, 379 integer (379 binary) Root relaxation: objective 0.000000e+00, 198 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 0 167 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (608 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