current bounds on the number of colors: 0 -- 227 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:46 2012 Optimize a model with 29381 rows, 25909 columns and 113113 nonzeros Presolve removed 25 rows and 2825 columns Presolve time: 0.15s Presolved: 29356 rows, 23084 columns, 110288 nonzeros Variable types: 0 continuous, 23084 integer (23084 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 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 -- 113 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:47 2012 Optimize a model with 14675 rows, 12970 columns and 56056 nonzeros Presolve removed 25 rows and 1400 columns Presolve time: 0.13s Presolved: 14650 rows, 11570 columns, 54656 nonzeros Variable types: 0 continuous, 11570 integer (11570 binary) Root relaxation: objective 0.000000e+00, 386 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 (386 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:47 2012 Optimize a model with 7451 rows, 6614 columns and 28028 nonzeros Presolve removed 25 rows and 700 columns Presolve time: 0.05s Presolved: 7426 rows, 5914 columns, 27328 nonzeros Variable types: 0 continuous, 5914 integer (5914 binary) Root relaxation: objective 0.000000e+00, 388 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 (388 simplex iterations) in 0.05 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:47 2012 Optimize a model with 3839 rows, 3436 columns and 14014 nonzeros Presolve removed 25 rows and 350 columns Presolve time: 0.02s Presolved: 3814 rows, 3086 columns, 13664 nonzeros Variable types: 0 continuous, 3086 integer (3086 binary) Root relaxation: objective 0.000000e+00, 390 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 (599 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:47 2012 Optimize a model with 2033 rows, 1847 columns and 7007 nonzeros Presolve removed 25 rows and 175 columns Presolve time: 0.01s Presolved: 2008 rows, 1672 columns, 6832 nonzeros Variable types: 0 continuous, 1672 integer (1672 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:48 2012 Optimize a model with 1001 rows, 939 columns and 3003 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 976 rows, 864 columns, 2928 nonzeros Variable types: 0 continuous, 864 integer (864 binary) Root relaxation: objective 0.000000e+00, 365 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 (503 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:48 2012 Optimize a model with 485 rows, 485 columns and 1001 nonzeros Presolve removed 485 rows and 485 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:48 2012 Optimize a model with 743 rows, 712 columns and 2002 nonzeros Presolve removed 227 rows and 252 columns Presolve time: 0.00s Presolved: 516 rows, 460 columns, 1548 nonzeros Variable types: 0 continuous, 460 integer (460 binary) Root relaxation: objective 0.000000e+00, 218 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 0 199 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (729 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 - optimal solution found: number of colors: 3