current bounds on the number of colors: 0 -- 109 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:44 2012 Optimize a model with 32671 rows, 6489 columns and 103572 nonzeros Presolve time: 0.15s Presolved: 32671 rows, 6489 columns, 103572 nonzeros Variable types: 0 continuous, 6489 integer (6489 binary) Root relaxation: objective 0.000000e+00, 263 iterations, 0.04 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 (492 simplex iterations) in 0.23 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 -- 54 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:44 2012 Optimize a model with 16390 rows, 3546 columns and 51786 nonzeros Presolve time: 0.07s Presolved: 16390 rows, 3546 columns, 51786 nonzeros Variable types: 0 continuous, 3546 integer (3546 binary) Root relaxation: objective 0.000000e+00, 253 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 0.10 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:45 2012 Optimize a model with 7948 rows, 2020 columns and 24934 nonzeros Presolve time: 0.02s Presolved: 7948 rows, 2020 columns, 24934 nonzeros Variable types: 0 continuous, 2020 integer (2020 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 (570 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:45 2012 Optimize a model with 3727 rows, 1257 columns and 11508 nonzeros Presolve time: 0.01s Presolved: 3727 rows, 1257 columns, 11508 nonzeros Variable types: 0 continuous, 1257 integer (1257 binary) Root relaxation: objective 0.000000e+00, 238 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 (1078 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:45 2012 Optimize a model with 1918 rows, 930 columns and 5754 nonzeros Presolve time: 0.00s Presolved: 1918 rows, 930 columns, 5754 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Root relaxation: objective 0.000000e+00, 231 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3141 simplex iterations) in 0.27 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:45 2012 Optimize a model with 2521 rows, 1039 columns and 7672 nonzeros Presolve time: 0.01s Presolved: 2521 rows, 1039 columns, 7672 nonzeros Variable types: 0 continuous, 1039 integer (1039 binary) Root relaxation: objective 0.000000e+00, 242 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 0 178 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 325 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 275 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 294 - 0.00000 - - 2s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 0 0.00000 0 286 - 0.00000 - - 3s 0 0 0.00000 0 286 - 0.00000 - - 3s 0 2 0.00000 0 286 - 0.00000 - - 3s Cutting planes: Clique: 10 Zero half: 26 Explored 61 nodes (33801 simplex iterations) in 4.47 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:50 2012 Optimize a model with 3124 rows, 1148 columns and 9590 nonzeros Presolve time: 0.01s Presolved: 3124 rows, 1148 columns, 9590 nonzeros Variable types: 0 continuous, 1148 integer (1148 binary) Root relaxation: objective 0.000000e+00, 236 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 0 208 - 0.00000 - - 0s 0 0 0.00000 0 142 - 0.00000 - - 0s 0 0 0.00000 0 169 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (7438 simplex iterations) in 0.65 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: 5