current bounds on the number of colors: 0 -- 132 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:28 2012 Optimize a model with 28776 rows, 9146 columns and 94644 nonzeros Presolve time: 0.14s Presolved: 28776 rows, 9146 columns, 94644 nonzeros Variable types: 0 continuous, 9146 integer (9146 binary) Root relaxation: objective 0.000000e+00, 404 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 (669 simplex iterations) in 0.20 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 -- 66 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:29 2012 Optimize a model with 14454 rows, 4790 columns and 47322 nonzeros Presolve time: 0.07s Presolved: 14454 rows, 4790 columns, 47322 nonzeros Variable types: 0 continuous, 4790 integer (4790 binary) Root relaxation: objective 0.000000e+00, 339 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 (574 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 -- 33 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:29 2012 Optimize a model with 7076 rows, 2546 columns and 22944 nonzeros Presolve time: 0.03s Presolved: 7076 rows, 2546 columns, 22944 nonzeros Variable types: 0 continuous, 2546 integer (2546 binary) Root relaxation: objective 0.000000e+00, 278 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 (488 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:29 2012 Optimize a model with 3604 rows, 1490 columns and 11472 nonzeros Presolve time: 0.01s Presolved: 3604 rows, 1490 columns, 11472 nonzeros Variable types: 0 continuous, 1490 integer (1490 binary) Root relaxation: objective 0.000000e+00, 309 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 (549 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:29 2012 Optimize a model with 1868 rows, 962 columns and 5736 nonzeros Presolve time: 0.00s Presolved: 1868 rows, 962 columns, 5736 nonzeros Variable types: 0 continuous, 962 integer (962 binary) Root relaxation: objective 0.000000e+00, 298 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 0 164 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1782 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:29 2012 Optimize a model with 1000 rows, 698 columns and 2868 nonzeros Presolve removed 132 rows and 132 columns Presolve time: 0.00s Presolved: 868 rows, 566 columns, 2604 nonzeros Variable types: 0 continuous, 566 integer (566 binary) Root relaxation: objective 0.000000e+00, 139 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 0 132 - 0.00000 - - 0s Explored 0 nodes (549 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:29 2012 Optimize a model with 1434 rows, 830 columns and 4302 nonzeros Presolve time: 0.00s Presolved: 1434 rows, 830 columns, 4302 nonzeros Variable types: 0 continuous, 830 integer (830 binary) Root relaxation: objective 0.000000e+00, 318 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 0 246 - 0.00000 - - 0s 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 319 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 11 Clique: 1 Zero half: 227 Explored 0 nodes (4148 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 4