current bounds on the number of colors: 0 -- 219 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:07 2012 Optimize a model with 29322 rows, 24138 columns and 111180 nonzeros Presolve removed 19 rows and 2071 columns Presolve time: 0.14s Presolved: 29303 rows, 22067 columns, 109109 nonzeros Variable types: 0 continuous, 22067 integer (22067 binary) Root relaxation: objective 0.000000e+00, 381 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 (381 simplex iterations) in 0.16 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 -- 109 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:08 2012 Optimize a model with 14637 rows, 12093 columns and 55080 nonzeros Presolve removed 19 rows and 1026 columns Presolve time: 0.13s Presolved: 14618 rows, 11067 columns, 54054 nonzeros Variable types: 0 continuous, 11067 integer (11067 binary) Root relaxation: objective 0.000000e+00, 388 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 (388 simplex iterations) in 0.14 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:08 2012 Optimize a model with 7428 rows, 6180 columns and 27540 nonzeros Presolve removed 19 rows and 513 columns Presolve time: 0.04s Presolved: 7409 rows, 5667 columns, 27027 nonzeros Variable types: 0 continuous, 5667 integer (5667 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:08 2012 Optimize a model with 3690 rows, 3114 columns and 13260 nonzeros Presolve removed 19 rows and 247 columns Presolve time: 0.02s Presolved: 3671 rows, 2867 columns, 13013 nonzeros Variable types: 0 continuous, 2867 integer (2867 binary) Root relaxation: objective 0.000000e+00, 398 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 (398 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:08 2012 Optimize a model with 1821 rows, 1581 columns and 6120 nonzeros Presolve removed 19 rows and 114 columns Presolve time: 0.01s Presolved: 1802 rows, 1467 columns, 6006 nonzeros Variable types: 0 continuous, 1467 integer (1467 binary) Root relaxation: objective 0.000000e+00, 367 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 (367 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 16:36:08 2012 Optimize a model with 1020 rows, 924 columns and 3060 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1001 rows, 867 columns, 3003 nonzeros Variable types: 0 continuous, 867 integer (867 binary) Root relaxation: objective 0.000000e+00, 431 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 (621 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 16:36:08 2012 Optimize a model with 486 rows, 486 columns and 1020 nonzeros Presolve removed 486 rows and 486 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 16:36:08 2012 Optimize a model with 753 rows, 705 columns and 2040 nonzeros Presolve removed 223 rows and 244 columns Presolve time: 0.00s Presolved: 530 rows, 461 columns, 1590 nonzeros Variable types: 0 continuous, 461 integer (461 binary) Root relaxation: objective 0.000000e+00, 226 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 0 192 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (753 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