current bounds on the number of colors: 0 -- 146 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:20 2012 Optimize a model with 8030 rows, 10766 columns and 34310 nonzeros Presolve removed 32 rows and 2336 columns Presolve time: 0.10s Presolved: 7998 rows, 8430 columns, 31974 nonzeros Variable types: 0 continuous, 8430 integer (8430 binary) Root relaxation: objective 0.000000e+00, 194 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 (194 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 -- 73 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:20 2012 Optimize a model with 4034 rows, 5364 columns and 16920 nonzeros Presolve removed 32 rows and 1152 columns Presolve time: 0.03s Presolved: 4002 rows, 4212 columns, 15768 nonzeros Variable types: 0 continuous, 4212 integer (4212 binary) Root relaxation: objective 0.000000e+00, 193 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 (193 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 -- 36 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:20 2012 Optimize a model with 2090 rows, 2736 columns and 8460 nonzeros Presolve removed 32 rows and 576 columns Presolve time: 0.01s Presolved: 2058 rows, 2160 columns, 7884 nonzeros Variable types: 0 continuous, 2160 integer (2160 binary) Root relaxation: objective 0.000000e+00, 194 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 (194 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:20 2012 Optimize a model with 1118 rows, 1422 columns and 4230 nonzeros Presolve removed 32 rows and 288 columns Presolve time: 0.00s Presolved: 1086 rows, 1134 columns, 3942 nonzeros Variable types: 0 continuous, 1134 integer (1134 binary) Root relaxation: objective 0.000000e+00, 187 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 (187 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:20 2012 Optimize a model with 578 rows, 692 columns and 1880 nonzeros Presolve removed 32 rows and 128 columns Presolve time: 0.00s Presolved: 546 rows, 564 columns, 1752 nonzeros Variable types: 0 continuous, 564 integer (564 binary) Root relaxation: objective 0.000000e+00, 178 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 (178 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:20 2012 Optimize a model with 362 rows, 400 columns and 940 nonzeros Presolve removed 152 rows and 187 columns Presolve time: 0.00s Presolved: 210 rows, 213 columns, 630 nonzeros Variable types: 0 continuous, 213 integer (213 binary) Root relaxation: objective 0.000000e+00, 109 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 78 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (306 simplex iterations) in 0.00 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 Sat Dec 15 16:19:20 2012 Optimize a model with 470 rows, 546 columns and 1410 nonzeros Presolve removed 32 rows and 96 columns Presolve time: 0.00s Presolved: 438 rows, 450 columns, 1314 nonzeros Variable types: 0 continuous, 450 integer (450 binary) Root relaxation: objective 0.000000e+00, 176 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 (176 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