current bounds on the number of colors: 0 -- 88 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:29 2012 Optimize a model with 16676 rows, 4249 columns and 53636 nonzeros Presolve time: 0.09s Presolved: 16676 rows, 4249 columns, 53636 nonzeros Variable types: 0 continuous, 4249 integer (4249 binary) Root relaxation: objective 0.000000e+00, 264 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 (454 simplex iterations) in 0.13 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 19:43:30 2012 Optimize a model with 8382 rows, 2313 columns and 26818 nonzeros Presolve time: 0.03s Presolved: 8382 rows, 2313 columns, 26818 nonzeros Variable types: 0 continuous, 2313 integer (2313 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (386 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 19:43:30 2012 Optimize a model with 4235 rows, 1345 columns and 13409 nonzeros Presolve time: 0.01s Presolved: 4235 rows, 1345 columns, 13409 nonzeros Variable types: 0 continuous, 1345 integer (1345 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 (353 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 19:43:30 2012 Optimize a model with 1973 rows, 817 columns and 6095 nonzeros Presolve time: 0.01s Presolved: 1973 rows, 817 columns, 6095 nonzeros Variable types: 0 continuous, 817 integer (817 binary) Root relaxation: objective 0.000000e+00, 192 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 (761 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:30 2012 Optimize a model with 842 rows, 553 columns and 2438 nonzeros Presolve removed 88 rows and 88 columns Presolve time: 0.00s Presolved: 754 rows, 465 columns, 2262 nonzeros Variable types: 0 continuous, 465 integer (465 binary) Root relaxation: objective 0.000000e+00, 91 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 (382 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 19:43:30 2012 Optimize a model with 1219 rows, 641 columns and 3657 nonzeros Presolve time: 0.00s Presolved: 1219 rows, 641 columns, 3657 nonzeros Variable types: 0 continuous, 641 integer (641 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 0.00000 0 174 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1875 simplex iterations) in 0.12 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 19:43:30 2012 Optimize a model with 1596 rows, 729 columns and 4876 nonzeros Presolve time: 0.00s Presolved: 1596 rows, 729 columns, 4876 nonzeros Variable types: 0 continuous, 729 integer (729 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 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 156 - 0.00000 - - 0s 0 0 0.00000 0 221 - 0.00000 - - 0s 0 0 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 179 - 0.00000 - - 0s 0 0 0.00000 0 184 - 0.00000 - - 0s 0 0 0.00000 0 196 - 0.00000 - - 0s 0 0 0.00000 0 196 - 0.00000 - - 0s 0 2 0.00000 0 196 - 0.00000 - - 0s Cutting planes: Clique: 2 Zero half: 15 Explored 692 nodes (54770 simplex iterations) in 2.42 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