current bounds on the number of colors: 0 -- 88 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:40 2012 Optimize a model with 17292 rows, 4263 columns and 55484 nonzeros Presolve time: 0.10s Presolved: 17292 rows, 4263 columns, 55484 nonzeros Variable types: 0 continuous, 4263 integer (4263 binary) Root relaxation: objective 0.000000e+00, 245 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 (496 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 -- 44 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:40 2012 Optimize a model with 8690 rows, 2327 columns and 27742 nonzeros Presolve time: 0.03s Presolved: 8690 rows, 2327 columns, 27742 nonzeros Variable types: 0 continuous, 2327 integer (2327 binary) Root relaxation: objective 0.000000e+00, 185 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 (336 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:40 2012 Optimize a model with 4389 rows, 1359 columns and 13871 nonzeros Presolve time: 0.01s Presolved: 4389 rows, 1359 columns, 13871 nonzeros Variable types: 0 continuous, 1359 integer (1359 binary) Root relaxation: objective 0.000000e+00, 182 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 (404 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:40 2012 Optimize a model with 2043 rows, 831 columns and 6305 nonzeros Presolve time: 0.01s Presolved: 2043 rows, 831 columns, 6305 nonzeros Variable types: 0 continuous, 831 integer (831 binary) Root relaxation: objective 0.000000e+00, 205 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 0 148 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (977 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:40 2012 Optimize a model with 870 rows, 567 columns and 2522 nonzeros Presolve removed 88 rows and 88 columns Presolve time: 0.00s Presolved: 782 rows, 479 columns, 2346 nonzeros Variable types: 0 continuous, 479 integer (479 binary) Root relaxation: objective 0.000000e+00, 95 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 88 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (374 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:40 2012 Optimize a model with 1261 rows, 655 columns and 3783 nonzeros Presolve time: 0.00s Presolved: 1261 rows, 655 columns, 3783 nonzeros Variable types: 0 continuous, 655 integer (655 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 0.00000 0 174 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2370 simplex iterations) in 0.18 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:41 2012 Optimize a model with 1652 rows, 743 columns and 5044 nonzeros Presolve time: 0.00s Presolved: 1652 rows, 743 columns, 5044 nonzeros Variable types: 0 continuous, 743 integer (743 binary) Root relaxation: objective 0.000000e+00, 195 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 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 147 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 0.00000 0 171 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 211 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 1s 0 0 0.00000 0 214 - 0.00000 - - 1s 0 2 0.00000 0 214 - 0.00000 - - 1s Cutting planes: Clique: 4 Zero half: 21 Explored 96 nodes (20929 simplex iterations) in 1.60 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5