current bounds on the number of colors: 0 -- 223 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:13 2012 Optimize a model with 28195 rows, 25005 columns and 108669 nonzeros Presolve removed 19 rows and 2109 columns Presolve time: 0.15s Presolved: 28176 rows, 22896 columns, 106560 nonzeros Variable types: 0 continuous, 22896 integer (22896 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:14 2012 Optimize a model with 14083 rows, 12517 columns and 53845 nonzeros Presolve removed 19 rows and 1045 columns Presolve time: 0.13s Presolved: 14064 rows, 11472 columns, 52800 nonzeros Variable types: 0 continuous, 11472 integer (11472 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:14 2012 Optimize a model with 7027 rows, 6273 columns and 26433 nonzeros Presolve removed 19 rows and 513 columns Presolve time: 0.04s Presolved: 7008 rows, 5760 columns, 25920 nonzeros Variable types: 0 continuous, 5760 integer (5760 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 simplex iterations) in 0.05 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 Sat Dec 15 16:37:14 2012 Optimize a model with 3499 rows, 3151 columns and 12727 nonzeros Presolve removed 19 rows and 247 columns Presolve time: 0.02s Presolved: 3480 rows, 2904 columns, 12480 nonzeros Variable types: 0 continuous, 2904 integer (2904 binary) Root relaxation: objective 0.000000e+00, 408 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 (619 simplex iterations) in 0.03 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 16:37:14 2012 Optimize a model with 1735 rows, 1590 columns and 5874 nonzeros Presolve removed 19 rows and 114 columns Presolve time: 0.01s Presolved: 1716 rows, 1476 columns, 5760 nonzeros Variable types: 0 continuous, 1476 integer (1476 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 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 16:37:14 2012 Optimize a model with 979 rows, 921 columns and 2937 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 960 rows, 864 columns, 2880 nonzeros Variable types: 0 continuous, 864 integer (864 binary) Root relaxation: objective 0.000000e+00, 397 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 16 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (738 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 16:37:14 2012 Optimize a model with 475 rows, 475 columns and 979 nonzeros Presolve removed 475 rows and 475 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 16:37:15 2012 Optimize a model with 727 rows, 698 columns and 1958 nonzeros Presolve removed 233 rows and 257 columns Presolve time: 0.00s Presolved: 494 rows, 441 columns, 1482 nonzeros Variable types: 0 continuous, 441 integer (441 binary) Root relaxation: objective 0.000000e+00, 217 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 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (719 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