current bounds on the number of colors: 0 -- 151 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:42 2012 Optimize a model with 45826 rows, 11934 columns and 148350 nonzeros Presolve time: 0.16s Presolved: 45826 rows, 11934 columns, 148350 nonzeros Variable types: 0 continuous, 11934 integer (11934 binary) Root relaxation: objective 0.000000e+00, 524 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 (855 simplex iterations) in 0.26 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 -- 75 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:43 2012 Optimize a model with 22684 rows, 6196 columns and 73186 nonzeros Presolve time: 0.12s Presolved: 22684 rows, 6196 columns, 73186 nonzeros Variable types: 0 continuous, 6196 integer (6196 binary) Root relaxation: objective 0.000000e+00, 466 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 (792 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 -- 37 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:43 2012 Optimize a model with 11113 rows, 3327 columns and 35604 nonzeros Presolve time: 0.04s Presolved: 11113 rows, 3327 columns, 35604 nonzeros Variable types: 0 continuous, 3327 integer (3327 binary) Root relaxation: objective 0.000000e+00, 316 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 (589 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 -- 18 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:43 2012 Optimize a model with 5632 rows, 1968 columns and 17802 nonzeros Presolve time: 0.02s Presolved: 5632 rows, 1968 columns, 17802 nonzeros Variable types: 0 continuous, 1968 integer (1968 binary) Root relaxation: objective 0.000000e+00, 325 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 (609 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:44 2012 Optimize a model with 2587 rows, 1213 columns and 7912 nonzeros Presolve time: 0.01s Presolved: 2587 rows, 1213 columns, 7912 nonzeros Variable types: 0 continuous, 1213 integer (1213 binary) Root relaxation: objective 0.000000e+00, 377 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 0s Cutting planes: Clique: 10 Zero half: 5 Explored 0 nodes (3000 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:44 2012 Optimize a model with 1369 rows, 911 columns and 3956 nonzeros Presolve removed 151 rows and 151 columns Presolve time: 0.00s Presolved: 1218 rows, 760 columns, 3654 nonzeros Variable types: 0 continuous, 760 integer (760 binary) Root relaxation: objective 0.000000e+00, 152 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 0 151 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (644 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 18:48:44 2012 Optimize a model with 1978 rows, 1062 columns and 5934 nonzeros Presolve time: 0.00s Presolved: 1978 rows, 1062 columns, 5934 nonzeros Variable types: 0 continuous, 1062 integer (1062 binary) Root relaxation: objective 0.000000e+00, 350 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 0 296 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 407 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 25 Zero half: 340 Explored 0 nodes (6416 simplex iterations) in 0.68 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