current bounds on the number of colors: 0 -- 197 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:19 2012 Optimize a model with 21267 rows, 19521 columns and 82516 nonzeros Presolve removed 19 rows and 1862 columns Presolve time: 0.13s Presolved: 21248 rows, 17659 columns, 80654 nonzeros Variable types: 0 continuous, 17659 integer (17659 binary) Root relaxation: objective 0.000000e+00, 342 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 (342 simplex iterations) in 0.15 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 -- 98 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 10732 rows, 9868 columns and 41258 nonzeros Presolve removed 19 rows and 931 columns Presolve time: 0.10s Presolved: 10713 rows, 8937 columns, 40327 nonzeros Variable types: 0 continuous, 8937 integer (8937 binary) Root relaxation: objective 0.000000e+00, 340 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 (340 simplex iterations) in 0.11 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 5357 rows, 4943 columns and 20208 nonzeros Presolve removed 19 rows and 456 columns Presolve time: 0.03s Presolved: 5338 rows, 4487 columns, 19752 nonzeros Variable types: 0 continuous, 4487 integer (4487 binary) Root relaxation: objective 0.000000e+00, 340 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 (340 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 2777 rows, 2579 columns and 10104 nonzeros Presolve removed 19 rows and 228 columns Presolve time: 0.01s Presolved: 2758 rows, 2351 columns, 9876 nonzeros Variable types: 0 continuous, 2351 integer (2351 binary) Root relaxation: objective 0.000000e+00, 332 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 (332 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 1487 rows, 1397 columns and 5052 nonzeros Presolve removed 19 rows and 114 columns Presolve time: 0.01s Presolved: 1468 rows, 1283 columns, 4938 nonzeros Variable types: 0 continuous, 1283 integer (1283 binary) Root relaxation: objective 0.000000e+00, 325 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 (469 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 842 rows, 806 columns and 2526 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 823 rows, 749 columns, 2469 nonzeros Variable types: 0 continuous, 749 integer (749 binary) Root relaxation: objective 0.000000e+00, 303 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 (303 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 412 rows, 412 columns and 842 nonzeros Presolve removed 412 rows and 412 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:20 2012 Optimize a model with 627 rows, 609 columns and 1684 nonzeros Presolve removed 199 rows and 219 columns Presolve time: 0.00s Presolved: 428 rows, 390 columns, 1284 nonzeros Variable types: 0 continuous, 390 integer (390 binary) Root relaxation: objective 0.000000e+00, 195 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 0 176 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (674 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 - optimal solution found: number of colors: 3