current bounds on the number of colors: 0 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 5735 rows, 7595 columns and 24339 nonzeros Presolve removed 26 rows and 1586 columns Presolve time: 0.07s Presolved: 5709 rows, 6009 columns, 22753 nonzeros Variable types: 0 continuous, 6009 integer (6009 binary) Root relaxation: objective 0.000000e+00, 168 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 (168 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 2883 rows, 3782 columns and 11970 nonzeros Presolve removed 26 rows and 780 columns Presolve time: 0.02s Presolved: 2857 rows, 3002 columns, 11190 nonzeros Variable types: 0 continuous, 3002 integer (3002 binary) Root relaxation: objective 0.000000e+00, 169 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 (169 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 1503 rows, 1937 columns and 5985 nonzeros Presolve removed 26 rows and 390 columns Presolve time: 0.01s Presolved: 1477 rows, 1547 columns, 5595 nonzeros Variable types: 0 continuous, 1547 integer (1547 binary) Root relaxation: objective 0.000000e+00, 170 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 (247 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 767 rows, 953 columns and 2793 nonzeros Presolve removed 26 rows and 182 columns Presolve time: 0.00s Presolved: 741 rows, 771 columns, 2611 nonzeros Variable types: 0 continuous, 771 integer (771 binary) Root relaxation: objective 0.000000e+00, 166 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 (166 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 399 rows, 461 columns and 1197 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 373 rows, 383 columns, 1119 nonzeros Variable types: 0 continuous, 383 integer (383 binary) Root relaxation: objective 0.000000e+00, 148 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 (148 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 16:16:51 2012 Optimize a model with 215 rows, 215 columns and 399 nonzeros Presolve removed 215 rows and 215 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 16:16:51 2012 Optimize a model with 307 rows, 338 columns and 798 nonzeros Presolve removed 131 rows and 161 columns Presolve time: 0.00s Presolved: 176 rows, 177 columns, 528 nonzeros Variable types: 0 continuous, 177 integer (177 binary) Root relaxation: objective 0.000000e+00, 94 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 82 - 0.00000 - - 0s Explored 0 nodes (297 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 - optimal solution found: number of colors: 3