current bounds on the number of colors: 0 -- 138 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:22 2012 Optimize a model with 7728 rows, 9632 columns and 32292 nonzeros Presolve removed 26 rows and 1794 columns Presolve time: 0.10s Presolved: 7702 rows, 7838 columns, 30498 nonzeros Variable types: 0 continuous, 7838 integer (7838 binary) Root relaxation: objective 0.000000e+00, 197 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 (197 simplex iterations) in 0.11 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 -- 69 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:22 2012 Optimize a model with 3878 rows, 4802 columns and 15912 nonzeros Presolve removed 26 rows and 884 columns Presolve time: 0.03s Presolved: 3852 rows, 3918 columns, 15028 nonzeros Variable types: 0 continuous, 3918 integer (3918 binary) Root relaxation: objective 0.000000e+00, 198 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 (198 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 -- 34 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:23 2012 Optimize a model with 2008 rows, 2456 columns and 7956 nonzeros Presolve removed 26 rows and 442 columns Presolve time: 0.01s Presolved: 1982 rows, 2014 columns, 7514 nonzeros Variable types: 0 continuous, 2014 integer (2014 binary) Root relaxation: objective 0.000000e+00, 197 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 (197 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:23 2012 Optimize a model with 1018 rows, 1214 columns and 3744 nonzeros Presolve removed 26 rows and 208 columns Presolve time: 0.00s Presolved: 992 rows, 1006 columns, 3536 nonzeros Variable types: 0 continuous, 1006 integer (1006 binary) Root relaxation: objective 0.000000e+00, 196 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 (196 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:23 2012 Optimize a model with 578 rows, 662 columns and 1872 nonzeros Presolve removed 26 rows and 104 columns Presolve time: 0.00s Presolved: 552 rows, 558 columns, 1768 nonzeros Variable types: 0 continuous, 558 integer (558 binary) Root relaxation: objective 0.000000e+00, 177 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 (177 simplex iterations) in 0.00 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 Sat Dec 15 16:18:23 2012 Optimize a model with 358 rows, 386 columns and 936 nonzeros Presolve removed 146 rows and 176 columns Presolve time: 0.00s Presolved: 212 rows, 210 columns, 636 nonzeros Variable types: 0 continuous, 210 integer (210 binary) Root relaxation: objective 0.000000e+00, 111 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 89 - 0.00000 - - 0s Explored 0 nodes (329 simplex iterations) in 0.00 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 Sat Dec 15 16:18:23 2012 Optimize a model with 468 rows, 524 columns and 1404 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 442 rows, 446 columns, 1326 nonzeros Variable types: 0 continuous, 446 integer (446 binary) Root relaxation: objective 0.000000e+00, 178 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 (178 simplex iterations) in 0.00 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% optimal solution found: number of colors: 3