current bounds on the number of colors: 0 -- 150 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:13 2012 Optimize a model with 45225 rows, 11851 columns and 146475 nonzeros Presolve time: 0.16s Presolved: 45225 rows, 11851 columns, 146475 nonzeros Variable types: 0 continuous, 11851 integer (11851 binary) Root relaxation: objective 0.000000e+00, 509 iterations, 0.04 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 (825 simplex iterations) in 0.26 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 -- 75 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:13 2012 Optimize a model with 22387 rows, 6151 columns and 72261 nonzeros Presolve time: 0.11s Presolved: 22387 rows, 6151 columns, 72261 nonzeros Variable types: 0 continuous, 6151 integer (6151 binary) Root relaxation: objective 0.000000e+00, 381 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 (677 simplex iterations) in 0.16 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 -- 37 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:14 2012 Optimize a model with 10968 rows, 3301 columns and 35154 nonzeros Presolve time: 0.04s Presolved: 10968 rows, 3301 columns, 35154 nonzeros Variable types: 0 continuous, 3301 integer (3301 binary) Root relaxation: objective 0.000000e+00, 303 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 (560 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 -- 18 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:14 2012 Optimize a model with 5559 rows, 1951 columns and 17577 nonzeros Presolve time: 0.02s Presolved: 5559 rows, 1951 columns, 17577 nonzeros Variable types: 0 continuous, 1951 integer (1951 binary) Root relaxation: objective 0.000000e+00, 325 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 (581 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:14 2012 Optimize a model with 2554 rows, 1201 columns and 7812 nonzeros Presolve time: 0.01s Presolved: 2554 rows, 1201 columns, 7812 nonzeros Variable types: 0 continuous, 1201 integer (1201 binary) Root relaxation: objective 0.000000e+00, 354 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 276 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 287 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (12614 simplex iterations) in 1.13 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:15 2012 Optimize a model with 1352 rows, 901 columns and 3906 nonzeros Presolve removed 150 rows and 150 columns Presolve time: 0.00s Presolved: 1202 rows, 751 columns, 3606 nonzeros Variable types: 0 continuous, 751 integer (751 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 0.00000 0 150 - 0.00000 - - 0s Explored 0 nodes (633 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:48:15 2012 Optimize a model with 1953 rows, 1051 columns and 5859 nonzeros Presolve time: 0.00s Presolved: 1953 rows, 1051 columns, 5859 nonzeros Variable types: 0 continuous, 1051 integer (1051 binary) Root relaxation: objective 0.000000e+00, 344 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 0 292 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 0s 0 0 0.00000 0 377 - 0.00000 - - 0s 0 0 0.00000 0 415 - 0.00000 - - 0s 0 0 0.00000 0 337 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Clique: 1 Zero half: 203 Explored 0 nodes (8592 simplex iterations) in 1.03 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: 4