current bounds on the number of colors: 0 -- 161 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:24:20 2012 Optimize a model with 51281 rows, 13519 columns and 166240 nonzeros Presolve time: 0.17s Presolved: 51281 rows, 13519 columns, 166240 nonzeros Variable types: 0 continuous, 13519 integer (13519 binary) Root relaxation: objective 0.000000e+00, 515 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 (848 simplex iterations) in 0.27 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 -- 80 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:24:21 2012 Optimize a model with 25721 rows, 7079 columns and 83120 nonzeros Presolve time: 0.13s Presolved: 25721 rows, 7079 columns, 83120 nonzeros Variable types: 0 continuous, 7079 integer (7079 binary) Root relaxation: objective 0.000000e+00, 404 iterations, 0.02 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 (707 simplex iterations) in 0.18 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 -- 40 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:24:21 2012 Optimize a model with 12941 rows, 3859 columns and 41560 nonzeros Presolve time: 0.05s Presolved: 12941 rows, 3859 columns, 41560 nonzeros Variable types: 0 continuous, 3859 integer (3859 binary) Root relaxation: objective 0.000000e+00, 385 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 (668 simplex iterations) in 0.08 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 -- 20 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:24:22 2012 Optimize a model with 6551 rows, 2249 columns and 20780 nonzeros Presolve time: 0.02s Presolved: 6551 rows, 2249 columns, 20780 nonzeros Variable types: 0 continuous, 2249 integer (2249 binary) Root relaxation: objective 0.000000e+00, 331 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 (738 simplex iterations) in 0.04 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 Fri Dec 14 19:24:22 2012 Optimize a model with 3356 rows, 1444 columns and 10390 nonzeros Presolve time: 0.01s Presolved: 3356 rows, 1444 columns, 10390 nonzeros Variable types: 0 continuous, 1444 integer (1444 binary) Root relaxation: objective 0.000000e+00, 376 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 (1223 simplex iterations) in 0.04 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 19:24:22 2012 Optimize a model with 1439 rows, 961 columns and 4156 nonzeros Presolve removed 161 rows and 161 columns Presolve time: 0.00s Presolved: 1278 rows, 800 columns, 3834 nonzeros Variable types: 0 continuous, 800 integer (800 binary) Root relaxation: objective 0.000000e+00, 163 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 0 161 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (680 simplex iterations) in 0.02 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 19:24:22 2012 Optimize a model with 2078 rows, 1122 columns and 6234 nonzeros Presolve time: 0.01s Presolved: 2078 rows, 1122 columns, 6234 nonzeros Variable types: 0 continuous, 1122 integer (1122 binary) Root relaxation: objective 0.000000e+00, 375 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 0 320 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3661 simplex iterations) in 0.37 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:24:22 2012 Optimize a model with 2717 rows, 1283 columns and 8312 nonzeros Presolve time: 0.01s Presolved: 2717 rows, 1283 columns, 8312 nonzeros Variable types: 0 continuous, 1283 integer (1283 binary) Root relaxation: objective 0.000000e+00, 389 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 0 302 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 261 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 1s 0 0 0.00000 0 248 - 0.00000 - - 1s 0 0 0.00000 0 246 - 0.00000 - - 1s 0 0 0.00000 0 238 - 0.00000 - - 1s 0 0 0.00000 0 236 - 0.00000 - - 1s 0 0 0.00000 0 187 - 0.00000 - - 1s 0 0 0.00000 0 174 - 0.00000 - - 1s 0 0 0.00000 0 257 - 0.00000 - - 2s 0 0 0.00000 0 325 - 0.00000 - - 2s 0 0 0.00000 0 325 - 0.00000 - - 2s 0 2 0.00000 0 325 - 0.00000 - - 2s H 264 0 0.0000000 0.00000 0.0% 65.7 3s Cutting planes: Zero half: 22 Explored 264 nodes (51517 simplex iterations) in 3.67 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: 4