current bounds on the number of colors: 0 -- 242 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:51 2012 Optimize a model with 35816 rows, 29576 columns and 136004 nonzeros Presolve removed 18 rows and 2178 columns Presolve time: 0.18s Presolved: 35798 rows, 27398 columns, 133826 nonzeros Variable types: 0 continuous, 27398 integer (27398 binary) Root relaxation: objective 0.000000e+00, 419 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 (419 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 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:52 2012 Optimize a model with 17882 rows, 14814 columns and 67440 nonzeros Presolve removed 18 rows and 1080 columns Presolve time: 0.13s Presolved: 17864 rows, 13734 columns, 66360 nonzeros Variable types: 0 continuous, 13734 integer (13734 binary) Root relaxation: objective 0.000000e+00, 418 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 (418 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:53 2012 Optimize a model with 9062 rows, 7554 columns and 33720 nonzeros Presolve removed 18 rows and 540 columns Presolve time: 0.06s Presolved: 9044 rows, 7014 columns, 33180 nonzeros Variable types: 0 continuous, 7014 integer (7014 binary) Root relaxation: objective 0.000000e+00, 412 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 (412 simplex iterations) in 0.07 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:53 2012 Optimize a model with 4652 rows, 3924 columns and 16860 nonzeros Presolve removed 18 rows and 270 columns Presolve time: 0.02s Presolved: 4634 rows, 3654 columns, 16590 nonzeros Variable types: 0 continuous, 3654 integer (3654 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 simplex iterations) in 0.03 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:53 2012 Optimize a model with 2300 rows, 1988 columns and 7868 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2282 rows, 1862 columns, 7742 nonzeros Variable types: 0 continuous, 1862 integer (1862 binary) Root relaxation: objective 0.000000e+00, 410 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 (410 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:53 2012 Optimize a model with 1124 rows, 1020 columns and 3372 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1106 rows, 966 columns, 3318 nonzeros Variable types: 0 continuous, 966 integer (966 binary) Root relaxation: objective 0.000000e+00, 408 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 (580 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 16:44:53 2012 Optimize a model with 536 rows, 536 columns and 1124 nonzeros Presolve removed 536 rows and 536 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 16:44:53 2012 Optimize a model with 830 rows, 778 columns and 2248 nonzeros Presolve removed 248 rows and 269 columns Presolve time: 0.00s Presolved: 582 rows, 509 columns, 1746 nonzeros Variable types: 0 continuous, 509 integer (509 binary) Root relaxation: objective 0.000000e+00, 252 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 0 218 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (807 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