current bounds on the number of colors: 0 -- 91 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:49 2012 Optimize a model with 17686 rows, 4486 columns and 56880 nonzeros Presolve time: 0.10s Presolved: 17686 rows, 4486 columns, 56880 nonzeros Variable types: 0 continuous, 4486 integer (4486 binary) Root relaxation: objective 0.000000e+00, 248 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 (480 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 -- 45 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:49 2012 Optimize a model with 8693 rows, 2393 columns and 27808 nonzeros Presolve time: 0.03s Presolved: 8693 rows, 2393 columns, 27808 nonzeros Variable types: 0 continuous, 2393 integer (2393 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 (338 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 19:45:49 2012 Optimize a model with 4392 rows, 1392 columns and 13904 nonzeros Presolve time: 0.01s Presolved: 4392 rows, 1392 columns, 13904 nonzeros Variable types: 0 continuous, 1392 integer (1392 binary) Root relaxation: objective 0.000000e+00, 190 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 (355 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:49 2012 Optimize a model with 2046 rows, 846 columns and 6320 nonzeros Presolve time: 0.01s Presolved: 2046 rows, 846 columns, 6320 nonzeros Variable types: 0 continuous, 846 integer (846 binary) Root relaxation: objective 0.000000e+00, 191 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 53 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1600 simplex iterations) in 0.06 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 19:45:49 2012 Optimize a model with 873 rows, 573 columns and 2528 nonzeros Presolve removed 91 rows and 91 columns Presolve time: 0.00s Presolved: 782 rows, 482 columns, 2346 nonzeros Variable types: 0 continuous, 482 integer (482 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 91 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (393 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 19:45:49 2012 Optimize a model with 1264 rows, 664 columns and 3792 nonzeros Presolve time: 0.00s Presolved: 1264 rows, 664 columns, 3792 nonzeros Variable types: 0 continuous, 664 integer (664 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 0 182 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2216 simplex iterations) in 0.14 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 19:45:50 2012 Optimize a model with 1655 rows, 755 columns and 5056 nonzeros Presolve time: 0.00s Presolved: 1655 rows, 755 columns, 5056 nonzeros Variable types: 0 continuous, 755 integer (755 binary) Root relaxation: objective 0.000000e+00, 212 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 0 176 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 0.00000 0 247 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 0.00000 0 239 - 0.00000 - - 0s 0 0 0.00000 0 235 - 0.00000 - - 0s 0 2 0.00000 0 235 - 0.00000 - - 0s Cutting planes: Clique: 7 Zero half: 4 Explored 269 nodes (26923 simplex iterations) in 1.53 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