current bounds on the number of colors: 0 -- 154 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 9933 rows, 11985 columns and 41195 nonzeros Presolve removed 31 rows and 2387 columns Presolve time: 0.11s Presolved: 9902 rows, 9598 columns, 38808 nonzeros Variable types: 0 continuous, 9598 integer (9598 binary) Root relaxation: objective 0.000000e+00, 225 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 (225 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 -- 77 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 4980 rows, 5979 columns and 20330 nonzeros Presolve removed 31 rows and 1178 columns Presolve time: 0.04s Presolved: 4949 rows, 4801 columns, 19152 nonzeros Variable types: 0 continuous, 4801 integer (4801 binary) Root relaxation: objective 0.000000e+00, 227 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 (227 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 -- 38 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 2567 rows, 3053 columns and 10165 nonzeros Presolve removed 31 rows and 589 columns Presolve time: 0.01s Presolved: 2536 rows, 2464 columns, 9576 nonzeros Variable types: 0 continuous, 2464 integer (2464 binary) Root relaxation: objective 0.000000e+00, 225 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 (326 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 1297 rows, 1513 columns and 4815 nonzeros Presolve removed 31 rows and 279 columns Presolve time: 0.01s Presolved: 1266 rows, 1234 columns, 4536 nonzeros Variable types: 0 continuous, 1234 integer (1234 binary) Root relaxation: objective 0.000000e+00, 222 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 0.01 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 662 rows, 743 columns and 2140 nonzeros Presolve removed 31 rows and 124 columns Presolve time: 0.00s Presolved: 631 rows, 619 columns, 2016 nonzeros Variable types: 0 continuous, 619 integer (619 binary) Root relaxation: objective 0.000000e+00, 186 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 (186 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 408 rows, 435 columns and 1070 nonzeros Presolve removed 166 rows and 203 columns Presolve time: 0.00s Presolved: 242 rows, 232 columns, 726 nonzeros Variable types: 0 continuous, 232 integer (232 binary) Root relaxation: objective 0.000000e+00, 120 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 0 105 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (369 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:32 2012 Optimize a model with 535 rows, 589 columns and 1605 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 504 rows, 496 columns, 1512 nonzeros Variable types: 0 continuous, 496 integer (496 binary) Root relaxation: objective 0.000000e+00, 224 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 (301 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% optimal solution found: number of colors: 3