current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:04 2012 Optimize a model with 41944 rows, 30720 columns and 155472 nonzeros Presolve removed 18 rows and 2214 columns Presolve time: 0.20s Presolved: 41926 rows, 28506 columns, 153258 nonzeros Variable types: 0 continuous, 28506 integer (28506 binary) Root relaxation: objective 0.000000e+00, 443 iterations, 0.02 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 (443 simplex iterations) in 0.24 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:05 2012 Optimize a model with 20926 rows, 15406 columns and 77104 nonzeros Presolve removed 18 rows and 1098 columns Presolve time: 0.13s Presolved: 20908 rows, 14308 columns, 76006 nonzeros Variable types: 0 continuous, 14308 integer (14308 binary) Root relaxation: objective 0.000000e+00, 443 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 (443 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:05 2012 Optimize a model with 10417 rows, 7749 columns and 37920 nonzeros Presolve removed 18 rows and 540 columns Presolve time: 0.06s Presolved: 10399 rows, 7209 columns, 37380 nonzeros Variable types: 0 continuous, 7209 integer (7209 binary) Root relaxation: objective 0.000000e+00, 444 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 (444 simplex iterations) in 0.07 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:06 2012 Optimize a model with 5332 rows, 4044 columns and 18960 nonzeros Presolve removed 18 rows and 270 columns Presolve time: 0.02s Presolved: 5314 rows, 3774 columns, 18690 nonzeros Variable types: 0 continuous, 3774 integer (3774 binary) Root relaxation: objective 0.000000e+00, 491 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 (783 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:06 2012 Optimize a model with 2620 rows, 2068 columns and 8848 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2602 rows, 1942 columns, 8722 nonzeros Variable types: 0 continuous, 1942 integer (1942 binary) Root relaxation: objective 0.000000e+00, 461 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 (699 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:06 2012 Optimize a model with 1264 rows, 1080 columns and 3792 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1246 rows, 1026 columns, 3738 nonzeros Variable types: 0 continuous, 1026 integer (1026 binary) Root relaxation: objective 0.000000e+00, 535 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 (807 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:06 2012 Optimize a model with 586 rows, 586 columns and 1264 nonzeros Presolve removed 586 rows and 586 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 16:47:06 2012 Optimize a model with 925 rows, 833 columns and 2528 nonzeros Presolve removed 247 rows and 265 columns Presolve time: 0.00s Presolved: 678 rows, 568 columns, 2034 nonzeros Variable types: 0 continuous, 568 integer (568 binary) Root relaxation: objective 0.000000e+00, 261 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 0 229 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (855 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