current bounds on the number of colors: 0 -- 95 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:57 2012 Optimize a model with 21809 rows, 4927 columns and 69607 nonzeros Presolve time: 0.12s Presolved: 21809 rows, 4927 columns, 69607 nonzeros Variable types: 0 continuous, 4927 integer (4927 binary) Root relaxation: objective 0.000000e+00, 335 iterations, 0.02 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 (552 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 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:58 2012 Optimize a model with 10721 rows, 2647 columns and 34063 nonzeros Presolve time: 0.04s Presolved: 10721 rows, 2647 columns, 34063 nonzeros Variable types: 0 continuous, 2647 integer (2647 binary) Root relaxation: objective 0.000000e+00, 214 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 (399 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:58 2012 Optimize a model with 5177 rows, 1507 columns and 16291 nonzeros Presolve time: 0.02s Presolved: 5177 rows, 1507 columns, 16291 nonzeros Variable types: 0 continuous, 1507 integer (1507 binary) Root relaxation: objective 0.000000e+00, 196 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 (363 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 19:47:58 2012 Optimize a model with 2405 rows, 937 columns and 7405 nonzeros Presolve time: 0.01s Presolved: 2405 rows, 937 columns, 7405 nonzeros Variable types: 0 continuous, 937 integer (937 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 0.00000 0 81 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1959 simplex iterations) in 0.09 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 19:47:58 2012 Optimize a model with 1019 rows, 652 columns and 2962 nonzeros Presolve removed 95 rows and 95 columns Presolve time: 0.00s Presolved: 924 rows, 557 columns, 2772 nonzeros Variable types: 0 continuous, 557 integer (557 binary) Root relaxation: objective 0.000000e+00, 98 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 95 - 0.00000 - - 0s Explored 0 nodes (403 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 19:47:58 2012 Optimize a model with 1481 rows, 747 columns and 4443 nonzeros Presolve time: 0.00s Presolved: 1481 rows, 747 columns, 4443 nonzeros Variable types: 0 continuous, 747 integer (747 binary) Root relaxation: objective 0.000000e+00, 200 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 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2866 simplex iterations) in 0.19 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 19:47:59 2012 Optimize a model with 1943 rows, 842 columns and 5924 nonzeros Presolve time: 0.00s Presolved: 1943 rows, 842 columns, 5924 nonzeros Variable types: 0 continuous, 842 integer (842 binary) Root relaxation: objective 0.000000e+00, 201 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 0 184 - 0.00000 - - 0s 0 0 0.00000 0 184 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 0 0.00000 0 261 - 0.00000 - - 0s 0 0 0.00000 0 253 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 1s 0 0 0.00000 0 226 - 0.00000 - - 1s 0 0 0.00000 0 222 - 0.00000 - - 1s 0 0 0.00000 0 254 - 0.00000 - - 1s 0 0 0.00000 0 233 - 0.00000 - - 1s 0 2 0.00000 0 233 - 0.00000 - - 1s Cutting planes: Clique: 6 Zero half: 17 Explored 62 nodes (23816 simplex iterations) in 2.20 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