current bounds on the number of colors: 0 -- 140 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:01 2012 Optimize a model with 34510 rows, 10291 columns and 112910 nonzeros Presolve time: 0.14s Presolved: 34510 rows, 10291 columns, 112910 nonzeros Variable types: 0 continuous, 10291 integer (10291 binary) Root relaxation: objective 0.000000e+00, 440 iterations, 0.03 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 (708 simplex iterations) in 0.21 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 -- 70 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:02 2012 Optimize a model with 17325 rows, 5391 columns and 56455 nonzeros Presolve time: 0.09s Presolved: 17325 rows, 5391 columns, 56455 nonzeros Variable types: 0 continuous, 5391 integer (5391 binary) Root relaxation: objective 0.000000e+00, 356 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 (612 simplex iterations) in 0.12 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 -- 35 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:02 2012 Optimize a model with 8487 rows, 2871 columns and 27421 nonzeros Presolve time: 0.03s Presolved: 8487 rows, 2871 columns, 27421 nonzeros Variable types: 0 continuous, 2871 integer (2871 binary) Root relaxation: objective 0.000000e+00, 294 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 (527 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:02 2012 Optimize a model with 4068 rows, 1611 columns and 12904 nonzeros Presolve time: 0.01s Presolved: 4068 rows, 1611 columns, 12904 nonzeros Variable types: 0 continuous, 1611 integer (1611 binary) Root relaxation: objective 0.000000e+00, 313 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 (585 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:02 2012 Optimize a model with 2104 rows, 1051 columns and 6452 nonzeros Presolve time: 0.01s Presolved: 2104 rows, 1051 columns, 6452 nonzeros Variable types: 0 continuous, 1051 integer (1051 binary) Root relaxation: objective 0.000000e+00, 345 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 248 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1390 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:02 2012 Optimize a model with 1122 rows, 771 columns and 3226 nonzeros Presolve removed 140 rows and 140 columns Presolve time: 0.00s Presolved: 982 rows, 631 columns, 2946 nonzeros Variable types: 0 continuous, 631 integer (631 binary) Root relaxation: objective 0.000000e+00, 151 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 0 140 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (582 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 - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:40:02 2012 Optimize a model with 1613 rows, 911 columns and 4839 nonzeros Presolve time: 0.00s Presolved: 1613 rows, 911 columns, 4839 nonzeros Variable types: 0 continuous, 911 integer (911 binary) Root relaxation: objective 0.000000e+00, 338 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 0 270 - 0.00000 - - 0s 0 0 0.00000 0 268 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3202 simplex iterations) in 0.21 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: 4