current bounds on the number of colors: 0 -- 179 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:54 2012 Optimize a model with 14597 rows, 16093 columns and 59185 nonzeros Presolve removed 24 rows and 2136 columns Presolve time: 0.12s Presolved: 14573 rows, 13957 columns, 57049 nonzeros Variable types: 0 continuous, 13957 integer (13957 binary) Root relaxation: objective 0.000000e+00, 290 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 (290 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:55 2012 Optimize a model with 7307 rows, 8038 columns and 29260 nonzeros Presolve removed 24 rows and 1056 columns Presolve time: 0.06s Presolved: 7283 rows, 6982 columns, 28204 nonzeros Variable types: 0 continuous, 6982 integer (6982 binary) Root relaxation: objective 0.000000e+00, 293 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 (293 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:55 2012 Optimize a model with 3743 rows, 4100 columns and 14630 nonzeros Presolve removed 24 rows and 528 columns Presolve time: 0.02s Presolved: 3719 rows, 3572 columns, 14102 nonzeros Variable types: 0 continuous, 3572 integer (3572 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:55 2012 Optimize a model with 1961 rows, 2131 columns and 7315 nonzeros Presolve removed 24 rows and 264 columns Presolve time: 0.01s Presolved: 1937 rows, 1867 columns, 7051 nonzeros Variable types: 0 continuous, 1867 integer (1867 binary) Root relaxation: objective 0.000000e+00, 265 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 (265 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 Sat Dec 15 16:24:55 2012 Optimize a model with 989 rows, 1057 columns and 3325 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 965 rows, 937 columns, 3205 nonzeros Variable types: 0 continuous, 937 integer (937 binary) Root relaxation: objective 0.000000e+00, 252 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 (252 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 Sat Dec 15 16:24:55 2012 Optimize a model with 503 rows, 520 columns and 1330 nonzeros Presolve removed 191 rows and 221 columns Presolve time: 0.00s Presolved: 312 rows, 299 columns, 936 nonzeros Variable types: 0 continuous, 299 integer (299 binary) Root relaxation: objective 0.000000e+00, 153 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 0 140 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (502 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 16:24:55 2012 Optimize a model with 665 rows, 699 columns and 1995 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 641 rows, 627 columns, 1923 nonzeros Variable types: 0 continuous, 627 integer (627 binary) Root relaxation: objective 0.000000e+00, 260 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 (260 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% optimal solution found: number of colors: 3