current bounds on the number of colors: 0 -- 72 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:54 2012 Optimize a model with 5220 rows, 2735 columns and 18036 nonzeros Presolve removed 1 rows and 36 columns Presolve time: 0.03s Presolved: 5219 rows, 2699 columns, 18000 nonzeros Variable types: 0 continuous, 2699 integer (2699 binary) Root relaxation: objective 0.000000e+00, 148 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 (148 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 -- 36 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:54 2012 Optimize a model with 2646 rows, 1439 columns and 9018 nonzeros Presolve removed 1 rows and 18 columns Presolve time: 0.01s Presolved: 2645 rows, 1421 columns, 9000 nonzeros Variable types: 0 continuous, 1421 integer (1421 binary) Root relaxation: objective 0.000000e+00, 154 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 (154 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 -- 18 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:54 2012 Optimize a model with 1359 rows, 791 columns and 4509 nonzeros Presolve removed 1 rows and 9 columns Presolve time: 0.00s Presolved: 1358 rows, 782 columns, 4500 nonzeros Variable types: 0 continuous, 782 integer (782 binary) Root relaxation: objective 0.000000e+00, 157 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 (252 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:54 2012 Optimize a model with 644 rows, 431 columns and 2004 nonzeros Presolve removed 1 rows and 4 columns Presolve time: 0.00s Presolved: 643 rows, 427 columns, 2000 nonzeros Variable types: 0 continuous, 427 integer (427 binary) Root relaxation: objective 0.000000e+00, 165 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 (288 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:54 2012 Optimize a model with 358 rows, 287 columns and 1002 nonzeros Presolve removed 72 rows and 73 columns Presolve time: 0.00s Presolved: 286 rows, 214 columns, 858 nonzeros Variable types: 0 continuous, 214 integer (214 binary) Root relaxation: objective 0.000000e+00, 77 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 71 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (261 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:54 2012 Optimize a model with 501 rows, 359 columns and 1503 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 500 rows, 356 columns, 1500 nonzeros Variable types: 0 continuous, 356 integer (356 binary) Root relaxation: objective 0.000000e+00, 177 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 (526 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