current bounds on the number of colors: 0 -- 193 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:15 2012 Optimize a model with 18049 rows, 18714 columns and 72096 nonzeros Presolve removed 24 rows and 2304 columns Presolve time: 0.12s Presolved: 18025 rows, 16410 columns, 69792 nonzeros Variable types: 0 continuous, 16410 integer (16410 binary) Root relaxation: objective 0.000000e+00, 296 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 (430 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:15 2012 Optimize a model with 9121 rows, 9450 columns and 36048 nonzeros Presolve removed 24 rows and 1152 columns Presolve time: 0.08s Presolved: 9097 rows, 8298 columns, 34896 nonzeros Variable types: 0 continuous, 8298 integer (8298 binary) Root relaxation: objective 0.000000e+00, 297 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 (447 simplex iterations) in 0.10 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:15 2012 Optimize a model with 4657 rows, 4818 columns and 18024 nonzeros Presolve removed 24 rows and 576 columns Presolve time: 0.03s Presolved: 4633 rows, 4242 columns, 17448 nonzeros Variable types: 0 continuous, 4242 integer (4242 binary) Root relaxation: objective 0.000000e+00, 296 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 (434 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 16:28:16 2012 Optimize a model with 2425 rows, 2502 columns and 9012 nonzeros Presolve removed 24 rows and 288 columns Presolve time: 0.01s Presolved: 2401 rows, 2214 columns, 8724 nonzeros Variable types: 0 continuous, 2214 integer (2214 binary) Root relaxation: objective 0.000000e+00, 319 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 (484 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 16:28:16 2012 Optimize a model with 1309 rows, 1344 columns and 4506 nonzeros Presolve removed 24 rows and 144 columns Presolve time: 0.00s Presolved: 1285 rows, 1200 columns, 4362 nonzeros Variable types: 0 continuous, 1200 integer (1200 binary) Root relaxation: objective 0.000000e+00, 291 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 (291 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 16:28:16 2012 Optimize a model with 751 rows, 765 columns and 2253 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 727 rows, 693 columns, 2181 nonzeros Variable types: 0 continuous, 693 integer (693 binary) Root relaxation: objective 0.000000e+00, 266 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 (266 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 16:28:16 2012 Optimize a model with 379 rows, 379 columns and 751 nonzeros Presolve removed 379 rows and 379 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 16:28:16 2012 Optimize a model with 565 rows, 572 columns and 1502 nonzeros Presolve removed 207 rows and 238 columns Presolve time: 0.00s Presolved: 358 rows, 334 columns, 1074 nonzeros Variable types: 0 continuous, 334 integer (334 binary) Root relaxation: objective 0.000000e+00, 180 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 0 152 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (566 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