current bounds on the number of colors: 0 -- 85 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:05 2012 Optimize a model with 6931 rows, 3733 columns and 24108 nonzeros Presolve removed 2 rows and 84 columns Presolve time: 0.05s Presolved: 6929 rows, 3649 columns, 24024 nonzeros Variable types: 0 continuous, 3649 integer (3649 binary) Root relaxation: objective 0.000000e+00, 194 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 (285 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 -- 42 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:05 2012 Optimize a model with 3508 rows, 1948 columns and 12054 nonzeros Presolve removed 2 rows and 42 columns Presolve time: 0.02s Presolved: 3506 rows, 1906 columns, 12012 nonzeros Variable types: 0 continuous, 1906 integer (1906 binary) Root relaxation: objective 0.000000e+00, 179 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 (297 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:05 2012 Optimize a model with 1715 rows, 1013 columns and 5740 nonzeros Presolve removed 2 rows and 20 columns Presolve time: 0.01s Presolved: 1713 rows, 993 columns, 5720 nonzeros Variable types: 0 continuous, 993 integer (993 binary) Root relaxation: objective 0.000000e+00, 175 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 (281 simplex iterations) in 0.01 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:05 2012 Optimize a model with 900 rows, 588 columns and 2870 nonzeros Presolve removed 2 rows and 10 columns Presolve time: 0.00s Presolved: 898 rows, 578 columns, 2860 nonzeros Variable types: 0 continuous, 578 integer (578 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 (310 simplex iterations) in 0.01 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 Fri Dec 14 18:22:05 2012 Optimize a model with 411 rows, 333 columns and 1148 nonzeros Presolve removed 85 rows and 87 columns Presolve time: 0.00s Presolved: 326 rows, 246 columns, 978 nonzeros Variable types: 0 continuous, 246 integer (246 binary) Root relaxation: objective 0.000000e+00, 91 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 83 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (330 simplex iterations) in 0.00 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 Fri Dec 14 18:22:05 2012 Optimize a model with 574 rows, 418 columns and 1722 nonzeros Presolve removed 2 rows and 6 columns Presolve time: 0.00s Presolved: 572 rows, 412 columns, 1716 nonzeros Variable types: 0 continuous, 412 integer (412 binary) Root relaxation: objective 0.000000e+00, 198 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 0 128 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (643 simplex iterations) in 0.01 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: 3