current bounds on the number of colors: 0 -- 142 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:41:00 2012 Optimize a model with 33796 rows, 10556 columns and 111044 nonzeros Presolve removed 1 rows and 71 columns Presolve time: 0.14s Presolved: 33795 rows, 10485 columns, 110973 nonzeros Variable types: 0 continuous, 10485 integer (10485 binary) Root relaxation: objective 0.000000e+00, 468 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 (711 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 -- 71 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:41:01 2012 Optimize a model with 16732 rows, 5444 columns and 54740 nonzeros Presolve removed 1 rows and 35 columns Presolve time: 0.08s Presolved: 16731 rows, 5409 columns, 54705 nonzeros Variable types: 0 continuous, 5409 integer (5409 binary) Root relaxation: objective 0.000000e+00, 354 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 (606 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 18:41:01 2012 Optimize a model with 8200 rows, 2888 columns and 26588 nonzeros Presolve removed 1 rows and 17 columns Presolve time: 0.03s Presolved: 8199 rows, 2871 columns, 26571 nonzeros Variable types: 0 continuous, 2871 integer (2871 binary) Root relaxation: objective 0.000000e+00, 291 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 (532 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 18:41:01 2012 Optimize a model with 3934 rows, 1610 columns and 12512 nonzeros Presolve removed 1 rows and 8 columns Presolve time: 0.01s Presolved: 3933 rows, 1602 columns, 12504 nonzeros Variable types: 0 continuous, 1602 integer (1602 binary) Root relaxation: objective 0.000000e+00, 298 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 (563 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 18:41:01 2012 Optimize a model with 2038 rows, 1042 columns and 6256 nonzeros Presolve removed 1 rows and 4 columns Presolve time: 0.01s Presolved: 2037 rows, 1038 columns, 6252 nonzeros Variable types: 0 continuous, 1038 integer (1038 binary) Root relaxation: objective 0.000000e+00, 332 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 72 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2347 simplex iterations) in 0.08 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 18:41:01 2012 Optimize a model with 1090 rows, 758 columns and 3128 nonzeros Presolve removed 142 rows and 143 columns Presolve time: 0.00s Presolved: 948 rows, 615 columns, 2844 nonzeros Variable types: 0 continuous, 615 integer (615 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 0 141 - 0.00000 - - 0s Explored 0 nodes (607 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 18:41:01 2012 Optimize a model with 1564 rows, 900 columns and 4692 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 1563 rows, 897 columns, 4689 nonzeros Variable types: 0 continuous, 897 integer (897 binary) Root relaxation: objective 0.000000e+00, 342 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 0 272 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2784 simplex iterations) in 0.15 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