current bounds on the number of colors: 0 -- 196 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:03 2012 Optimize a model with 20972 rows, 19420 columns and 81536 nonzeros Presolve removed 18 rows and 1764 columns Presolve time: 0.13s Presolved: 20954 rows, 17656 columns, 79772 nonzeros Variable types: 0 continuous, 17656 integer (17656 binary) Root relaxation: objective 0.000000e+00, 329 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 (329 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 -- 98 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:04 2012 Optimize a model with 10584 rows, 9816 columns and 40768 nonzeros Presolve removed 18 rows and 882 columns Presolve time: 0.10s Presolved: 10566 rows, 8934 columns, 39886 nonzeros Variable types: 0 continuous, 8934 integer (8934 binary) Root relaxation: objective 0.000000e+00, 329 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 (329 simplex iterations) in 0.11 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:04 2012 Optimize a model with 5284 rows, 4916 columns and 19968 nonzeros Presolve removed 18 rows and 432 columns Presolve time: 0.03s Presolved: 5266 rows, 4484 columns, 19536 nonzeros Variable types: 0 continuous, 4484 integer (4484 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:04 2012 Optimize a model with 2740 rows, 2564 columns and 9984 nonzeros Presolve removed 18 rows and 216 columns Presolve time: 0.01s Presolved: 2722 rows, 2348 columns, 9768 nonzeros Variable types: 0 continuous, 2348 integer (2348 binary) Root relaxation: objective 0.000000e+00, 339 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 (510 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:04 2012 Optimize a model with 1468 rows, 1388 columns and 4992 nonzeros Presolve removed 18 rows and 108 columns Presolve time: 0.01s Presolved: 1450 rows, 1280 columns, 4884 nonzeros Variable types: 0 continuous, 1280 integer (1280 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (318 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:04 2012 Optimize a model with 832 rows, 800 columns and 2496 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 814 rows, 746 columns, 2442 nonzeros Variable types: 0 continuous, 746 integer (746 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 simplex iterations) in 0.00 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 16:29:04 2012 Optimize a model with 408 rows, 408 columns and 832 nonzeros Presolve removed 408 rows and 408 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 16:29:04 2012 Optimize a model with 620 rows, 604 columns and 1664 nonzeros Presolve removed 200 rows and 220 columns Presolve time: 0.00s Presolved: 420 rows, 384 columns, 1260 nonzeros Variable types: 0 continuous, 384 integer (384 binary) Root relaxation: objective 0.000000e+00, 205 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 0 171 - 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 - optimal solution found: number of colors: 3