current bounds on the number of colors: 0 -- 233 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:01 2012 Optimize a model with 32017 rows, 27302 columns and 122380 nonzeros Presolve removed 19 rows and 2204 columns Presolve time: 0.14s Presolved: 31998 rows, 25098 columns, 120176 nonzeros Variable types: 0 continuous, 25098 integer (25098 binary) Root relaxation: objective 0.000000e+00, 383 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 (383 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:02 2012 Optimize a model with 16125 rows, 13788 columns and 61190 nonzeros Presolve removed 19 rows and 1102 columns Presolve time: 0.12s Presolved: 16106 rows, 12686 columns, 60088 nonzeros Variable types: 0 continuous, 12686 integer (12686 binary) Root relaxation: objective 0.000000e+00, 383 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 (383 simplex iterations) in 0.13 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 16:41:02 2012 Optimize a model with 8179 rows, 7031 columns and 30595 nonzeros Presolve removed 19 rows and 551 columns Presolve time: 0.05s Presolved: 8160 rows, 6480 columns, 30044 nonzeros Variable types: 0 continuous, 6480 integer (6480 binary) Root relaxation: objective 0.000000e+00, 383 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 (383 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 16:41:02 2012 Optimize a model with 4069 rows, 3536 columns and 14770 nonzeros Presolve removed 19 rows and 266 columns Presolve time: 0.02s Presolved: 4050 rows, 3270 columns, 14504 nonzeros Variable types: 0 continuous, 3270 integer (3270 binary) Root relaxation: objective 0.000000e+00, 416 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 (416 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:02 2012 Optimize a model with 2151 rows, 1905 columns and 7385 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2132 rows, 1772 columns, 7252 nonzeros Variable types: 0 continuous, 1772 integer (1772 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 (392 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 16:41:02 2012 Optimize a model with 1055 rows, 973 columns and 3165 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1036 rows, 916 columns, 3108 nonzeros Variable types: 0 continuous, 916 integer (916 binary) Root relaxation: objective 0.000000e+00, 421 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 (590 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 16:41:02 2012 Optimize a model with 507 rows, 507 columns and 1055 nonzeros Presolve removed 507 rows and 507 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 16:41:02 2012 Optimize a model with 781 rows, 740 columns and 2110 nonzeros Presolve removed 237 rows and 258 columns Presolve time: 0.00s Presolved: 544 rows, 482 columns, 1632 nonzeros Variable types: 0 continuous, 482 integer (482 binary) Root relaxation: objective 0.000000e+00, 240 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 0 210 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (780 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