current bounds on the number of colors: 0 -- 92 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:06 2012 Optimize a model with 19182 rows, 4647 columns and 61502 nonzeros Presolve time: 0.11s Presolved: 19182 rows, 4647 columns, 61502 nonzeros Variable types: 0 continuous, 4647 integer (4647 binary) Root relaxation: objective 0.000000e+00, 305 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 (498 simplex iterations) in 0.15 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 -- 46 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:06 2012 Optimize a model with 9637 rows, 2531 columns and 30751 nonzeros Presolve time: 0.04s Presolved: 9637 rows, 2531 columns, 30751 nonzeros Variable types: 0 continuous, 2531 integer (2531 binary) Root relaxation: objective 0.000000e+00, 212 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 (396 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 19:46:06 2012 Optimize a model with 4657 rows, 1427 columns and 14707 nonzeros Presolve time: 0.01s Presolved: 4657 rows, 1427 columns, 14707 nonzeros Variable types: 0 continuous, 1427 integer (1427 binary) Root relaxation: objective 0.000000e+00, 189 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 (352 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 19:46:06 2012 Optimize a model with 2167 rows, 875 columns and 6685 nonzeros Presolve time: 0.01s Presolved: 2167 rows, 875 columns, 6685 nonzeros Variable types: 0 continuous, 875 integer (875 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 70 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (974 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:06 2012 Optimize a model with 922 rows, 599 columns and 2674 nonzeros Presolve removed 92 rows and 92 columns Presolve time: 0.00s Presolved: 830 rows, 507 columns, 2490 nonzeros Variable types: 0 continuous, 507 integer (507 binary) Root relaxation: objective 0.000000e+00, 96 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 92 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (389 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 19:46:06 2012 Optimize a model with 1337 rows, 691 columns and 4011 nonzeros Presolve time: 0.00s Presolved: 1337 rows, 691 columns, 4011 nonzeros Variable types: 0 continuous, 691 integer (691 binary) Root relaxation: objective 0.000000e+00, 222 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 0 142 - 0.00000 - - 0s 0 0 0.00000 0 184 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2501 simplex iterations) in 0.17 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 19:46:07 2012 Optimize a model with 1752 rows, 783 columns and 5348 nonzeros Presolve time: 0.00s Presolved: 1752 rows, 783 columns, 5348 nonzeros Variable types: 0 continuous, 783 integer (783 binary) Root relaxation: objective 0.000000e+00, 203 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 0 174 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 2 0.00000 0 231 - 0.00000 - - 1s Cutting planes: Clique: 6 Zero half: 17 Explored 706 nodes (62099 simplex iterations) in 3.16 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