current bounds on the number of colors: 0 -- 246 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:42 2012 Optimize a model with 40467 rows, 30585 columns and 150921 nonzeros Presolve removed 20 rows and 2460 columns Presolve time: 0.20s Presolved: 40447 rows, 28125 columns, 148461 nonzeros Variable types: 0 continuous, 28125 integer (28125 binary) Root relaxation: objective 0.000000e+00, 451 iterations, 0.02 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 (451 simplex iterations) in 0.23 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:43 2012 Optimize a model with 20193 rows, 15333 columns and 74847 nonzeros Presolve removed 20 rows and 1220 columns Presolve time: 0.13s Presolved: 20173 rows, 14113 columns, 73627 nonzeros Variable types: 0 continuous, 14113 integer (14113 binary) Root relaxation: objective 0.000000e+00, 447 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 (447 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:43 2012 Optimize a model with 10056 rows, 7707 columns and 36810 nonzeros Presolve removed 20 rows and 600 columns Presolve time: 0.06s Presolved: 10036 rows, 7107 columns, 36210 nonzeros Variable types: 0 continuous, 7107 integer (7107 binary) Root relaxation: objective 0.000000e+00, 446 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 (446 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 16:46:43 2012 Optimize a model with 5151 rows, 4017 columns and 18405 nonzeros Presolve removed 20 rows and 300 columns Presolve time: 0.02s Presolved: 5131 rows, 3717 columns, 18105 nonzeros Variable types: 0 continuous, 3717 integer (3717 binary) Root relaxation: objective 0.000000e+00, 464 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 (464 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 16:46:44 2012 Optimize a model with 2535 rows, 2049 columns and 8589 nonzeros Presolve removed 20 rows and 140 columns Presolve time: 0.01s Presolved: 2515 rows, 1909 columns, 8449 nonzeros Variable types: 0 continuous, 1909 integer (1909 binary) Root relaxation: objective 0.000000e+00, 470 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 (470 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 16:46:44 2012 Optimize a model with 1227 rows, 1065 columns and 3681 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 1207 rows, 1005 columns, 3621 nonzeros Variable types: 0 continuous, 1005 integer (1005 binary) Root relaxation: objective 0.000000e+00, 486 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 (680 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 16:46:44 2012 Optimize a model with 573 rows, 573 columns and 1227 nonzeros Presolve removed 573 rows and 573 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 16:46:44 2012 Optimize a model with 900 rows, 819 columns and 2454 nonzeros Presolve removed 248 rows and 269 columns Presolve time: 0.00s Presolved: 652 rows, 550 columns, 1956 nonzeros Variable types: 0 continuous, 550 integer (550 binary) Root relaxation: objective 0.000000e+00, 261 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 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (882 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