current bounds on the number of colors: 0 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:47 2012 Optimize a model with 3025 rows, 6103 columns and 14795 nonzeros Presolve removed 38 rows and 2090 columns Presolve time: 0.04s Presolved: 2987 rows, 4013 columns, 12705 nonzeros Variable types: 0 continuous, 4013 integer (4013 binary) Root relaxation: objective 0.000000e+00, 116 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 (116 simplex iterations) in 0.04 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:47 2012 Optimize a model with 1541 rows, 3023 columns and 7263 nonzeros Presolve removed 38 rows and 1026 columns Presolve time: 0.01s Presolved: 1503 rows, 1997 columns, 6237 nonzeros Variable types: 0 continuous, 1997 integer (1997 binary) Root relaxation: objective 0.000000e+00, 116 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 (116 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:47 2012 Optimize a model with 799 rows, 1483 columns and 3497 nonzeros Presolve removed 38 rows and 494 columns Presolve time: 0.00s Presolved: 761 rows, 989 columns, 3003 nonzeros Variable types: 0 continuous, 989 integer (989 binary) Root relaxation: objective 0.000000e+00, 119 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 (119 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:47 2012 Optimize a model with 428 rows, 713 columns and 1614 nonzeros Presolve removed 38 rows and 228 columns Presolve time: 0.00s Presolved: 390 rows, 485 columns, 1386 nonzeros Variable types: 0 continuous, 485 integer (485 binary) Root relaxation: objective 0.000000e+00, 110 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 (110 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:47 2012 Optimize a model with 269 rows, 383 columns and 807 nonzeros Presolve removed 38 rows and 114 columns Presolve time: 0.00s Presolved: 231 rows, 269 columns, 693 nonzeros Variable types: 0 continuous, 269 integer (269 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:47 2012 Optimize a model with 163 rows, 163 columns and 269 nonzeros Presolve removed 163 rows and 163 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 16:15:47 2012 Optimize a model with 216 rows, 273 columns and 538 nonzeros Presolve removed 130 rows and 178 columns Presolve time: 0.00s Presolved: 86 rows, 95 columns, 258 nonzeros Variable types: 0 continuous, 95 integer (95 binary) Root relaxation: objective 0.000000e+00, 37 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 (37 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: 2