current bounds on the number of colors: 0 -- 95 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:40 2012 Optimize a model with 10153 rows, 4679 columns and 34639 nonzeros Presolve removed 1 rows and 47 columns Presolve time: 0.07s Presolved: 10152 rows, 4632 columns, 34592 nonzeros Variable types: 0 continuous, 4632 integer (4632 binary) Root relaxation: objective 0.000000e+00, 259 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 (414 simplex iterations) in 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:40 2012 Optimize a model with 5017 rows, 2399 columns and 16951 nonzeros Presolve removed 1 rows and 23 columns Presolve time: 0.02s Presolved: 5016 rows, 2376 columns, 16928 nonzeros Variable types: 0 continuous, 2376 integer (2376 binary) Root relaxation: objective 0.000000e+00, 230 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 (388 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 -- 23 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:40 2012 Optimize a model with 2449 rows, 1259 columns and 8107 nonzeros Presolve removed 1 rows and 11 columns Presolve time: 0.01s Presolved: 2448 rows, 1248 columns, 8096 nonzeros Variable types: 0 continuous, 1248 integer (1248 binary) Root relaxation: objective 0.000000e+00, 199 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 (331 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 -- 11 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:40 2012 Optimize a model with 1165 rows, 689 columns and 3685 nonzeros Presolve removed 1 rows and 5 columns Presolve time: 0.00s Presolved: 1164 rows, 684 columns, 3680 nonzeros Variable types: 0 continuous, 684 integer (684 binary) Root relaxation: objective 0.000000e+00, 214 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 (372 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:40 2012 Optimize a model with 523 rows, 404 columns and 1474 nonzeros Presolve removed 95 rows and 96 columns Presolve time: 0.00s Presolved: 428 rows, 308 columns, 1284 nonzeros Variable types: 0 continuous, 308 integer (308 binary) Root relaxation: objective 0.000000e+00, 103 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 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (401 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:40 2012 Optimize a model with 737 rows, 499 columns and 2211 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 736 rows, 496 columns, 2208 nonzeros Variable types: 0 continuous, 496 integer (496 binary) Root relaxation: objective 0.000000e+00, 253 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 0 168 - 0.00000 - - 0s 0 0 0.00000 0 152 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 187 - 0.00000 - - 0s 0 0 0.00000 0 148 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 0.00000 0 163 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 2 0.00000 0 176 - 0.00000 - - 0s * 22 2 5 0.0000000 0.00000 0.0% 52.0 0s Cutting planes: Zero half: 16 Explored 23 nodes (7902 simplex iterations) in 0.35 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