current bounds on the number of colors: 0 -- 232 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:37 2012 Optimize a model with 31900 rows, 27185 columns and 121916 nonzeros Presolve removed 27 rows and 3132 columns Presolve time: 0.16s Presolved: 31873 rows, 24053 columns, 118784 nonzeros Variable types: 0 continuous, 24053 integer (24053 binary) Root relaxation: objective 0.000000e+00, 386 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 (386 simplex iterations) in 0.18 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:38 2012 Optimize a model with 16066 rows, 13729 columns and 60958 nonzeros Presolve removed 27 rows and 1566 columns Presolve time: 0.12s Presolved: 16039 rows, 12163 columns, 59392 nonzeros Variable types: 0 continuous, 12163 integer (12163 binary) Root relaxation: objective 0.000000e+00, 388 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 (613 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:38 2012 Optimize a model with 8149 rows, 7001 columns and 30479 nonzeros Presolve removed 27 rows and 783 columns Presolve time: 0.05s Presolved: 8122 rows, 6218 columns, 29696 nonzeros Variable types: 0 continuous, 6218 integer (6218 binary) Root relaxation: objective 0.000000e+00, 394 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 (394 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:38 2012 Optimize a model with 4054 rows, 3521 columns and 14714 nonzeros Presolve removed 27 rows and 378 columns Presolve time: 0.02s Presolved: 4027 rows, 3143 columns, 14336 nonzeros Variable types: 0 continuous, 3143 integer (3143 binary) Root relaxation: objective 0.000000e+00, 424 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 (677 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:38 2012 Optimize a model with 2143 rows, 1897 columns and 7357 nonzeros Presolve removed 27 rows and 189 columns Presolve time: 0.01s Presolved: 2116 rows, 1708 columns, 7168 nonzeros Variable types: 0 continuous, 1708 integer (1708 binary) Root relaxation: objective 0.000000e+00, 392 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 (575 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 16:40:38 2012 Optimize a model with 1051 rows, 969 columns and 3153 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 1024 rows, 888 columns, 3072 nonzeros Variable types: 0 continuous, 888 integer (888 binary) Root relaxation: objective 0.000000e+00, 384 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 (384 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 16:40:38 2012 Optimize a model with 505 rows, 505 columns and 1051 nonzeros Presolve removed 505 rows and 505 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 16:40:38 2012 Optimize a model with 778 rows, 737 columns and 2102 nonzeros Presolve removed 234 rows and 262 columns Presolve time: 0.00s Presolved: 544 rows, 475 columns, 1632 nonzeros Variable types: 0 continuous, 475 integer (475 binary) Root relaxation: objective 0.000000e+00, 237 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 0 203 - 0.00000 - - 0s Explored 0 nodes (788 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