current bounds on the number of colors: 0 -- 249 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:23 2012 Optimize a model with 41665 rows, 31210 columns and 155124 nonzeros Presolve removed 19 rows and 2356 columns Presolve time: 0.21s Presolved: 41646 rows, 28854 columns, 152768 nonzeros Variable types: 0 continuous, 28854 integer (28854 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 (694 simplex iterations) in 0.28 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:24 2012 Optimize a model with 20957 rows, 15772 columns and 77562 nonzeros Presolve removed 19 rows and 1178 columns Presolve time: 0.13s Presolved: 20938 rows, 14594 columns, 76384 nonzeros Variable types: 0 continuous, 14594 integer (14594 binary) Root relaxation: objective 0.000000e+00, 451 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 (697 simplex iterations) in 0.17 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:24 2012 Optimize a model with 10603 rows, 8053 columns and 38781 nonzeros Presolve removed 19 rows and 589 columns Presolve time: 0.07s Presolved: 10584 rows, 7464 columns, 38192 nonzeros Variable types: 0 continuous, 7464 integer (7464 binary) Root relaxation: objective 0.000000e+00, 457 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 (457 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:25 2012 Optimize a model with 5259 rows, 4069 columns and 18765 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 5240 rows, 3784 columns, 18480 nonzeros Variable types: 0 continuous, 3784 integer (3784 binary) Root relaxation: objective 0.000000e+00, 450 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 (699 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 16:48:25 2012 Optimize a model with 2587 rows, 2077 columns and 8757 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2568 rows, 1944 columns, 8624 nonzeros Variable types: 0 continuous, 1944 integer (1944 binary) Root relaxation: objective 0.000000e+00, 443 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 (443 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 16:48:25 2012 Optimize a model with 1251 rows, 1081 columns and 3753 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1232 rows, 1024 columns, 3696 nonzeros Variable types: 0 continuous, 1024 integer (1024 binary) Root relaxation: objective 0.000000e+00, 530 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 14 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (993 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:25 2012 Optimize a model with 583 rows, 583 columns and 1251 nonzeros Presolve removed 583 rows and 583 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 16:48:25 2012 Optimize a model with 917 rows, 832 columns and 2502 nonzeros Presolve removed 253 rows and 274 columns Presolve time: 0.00s Presolved: 664 rows, 558 columns, 1992 nonzeros Variable types: 0 continuous, 558 integer (558 binary) Root relaxation: objective 0.000000e+00, 251 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 0 226 - 0.00000 - - 0s Explored 0 nodes (844 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