current bounds on the number of colors: 0 -- 174 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:51 2012 Optimize a model with 13659 rows, 15293 columns and 55593 nonzeros Presolve removed 23 rows and 2001 columns Presolve time: 0.11s Presolved: 13636 rows, 13292 columns, 53592 nonzeros Variable types: 0 continuous, 13292 integer (13292 binary) Root relaxation: objective 0.000000e+00, 271 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 (271 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 -- 87 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:52 2012 Optimize a model with 6839 rows, 7637 columns and 27477 nonzeros Presolve removed 23 rows and 989 columns Presolve time: 0.06s Presolved: 6816 rows, 6648 columns, 26488 nonzeros Variable types: 0 continuous, 6648 integer (6648 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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 -- 43 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:52 2012 Optimize a model with 3429 rows, 3809 columns and 13419 nonzeros Presolve removed 23 rows and 483 columns Presolve time: 0.02s Presolved: 3406 rows, 3326 columns, 12936 nonzeros Variable types: 0 continuous, 3326 integer (3326 binary) Root relaxation: objective 0.000000e+00, 269 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 (269 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:52 2012 Optimize a model with 1724 rows, 1895 columns and 6390 nonzeros Presolve removed 23 rows and 230 columns Presolve time: 0.01s Presolved: 1701 rows, 1665 columns, 6160 nonzeros Variable types: 0 continuous, 1665 integer (1665 binary) Root relaxation: objective 0.000000e+00, 266 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 (266 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:52 2012 Optimize a model with 949 rows, 1025 columns and 3195 nonzeros Presolve removed 23 rows and 115 columns Presolve time: 0.00s Presolved: 926 rows, 910 columns, 3080 nonzeros Variable types: 0 continuous, 910 integer (910 binary) Root relaxation: objective 0.000000e+00, 247 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 0.00 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:52 2012 Optimize a model with 484 rows, 503 columns and 1278 nonzeros Presolve removed 190 rows and 221 columns Presolve time: 0.00s Presolved: 294 rows, 282 columns, 882 nonzeros Variable types: 0 continuous, 282 integer (282 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 0.00000 0 124 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (448 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 Sat Dec 15 16:23:52 2012 Optimize a model with 639 rows, 677 columns and 1917 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 616 rows, 608 columns, 1848 nonzeros Variable types: 0 continuous, 608 integer (608 binary) Root relaxation: objective 0.000000e+00, 259 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 6 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (471 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% optimal solution found: number of colors: 3