
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:44:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3152.43.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3152.43.lp
Reading time = 0.11 seconds
: 59006 rows, 2071 columns, 178548 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 59006 rows, 2071 columns and 178548 nonzeros
Model fingerprint: 0xe3c34b7c
Variable types: 44 continuous, 2027 integer (2027 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective -0.0000000
Presolve removed 4861 rows and 0 columns
Presolve time: 0.47s
Presolved: 54145 rows, 2071 columns, 164314 nonzeros
Variable types: 0 continuous, 2071 integer (2027 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 28560 rows, 27656 columns, 113144 nonzeros


Root relaxation: objective 3.000000e+01, 3754 iterations, 2.70 seconds (1.65 work units)
Total elapsed time = 7.35s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   30.00000    0  480    5.00000   30.00000   500%     -    8s
H    0     0                       6.0000000   30.00000   400%     -    8s
     0     0   30.00000    0  728    6.00000   30.00000   400%     -   21s
H    0     0                       7.0000000   30.00000   329%     -   21s
     0     0   30.00000    0  736    7.00000   30.00000   329%     -   22s
H    0     0                       8.0000000   30.00000   275%     -   46s
     0     0   30.00000    0  459    8.00000   30.00000   275%     -   49s
H    0     0                       9.0000000   30.00000   233%     -   49s
     0     0          -    0         9.00000   30.00000   233%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 1
  MIR: 17
  Zero half: 4
  RLT: 27

Explored 1 nodes (34708 simplex iterations) in 50.10 seconds (30.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 9 8 7 ... -0

Time limit reached
Best objective 9.000000000000e+00, best bound 3.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo3152.43.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:49:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3152.43.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3152.43.lp
Reading time = 0.09 seconds
: 59006 rows, 2071 columns, 178548 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 59006 rows, 2071 columns and 178548 nonzeros
Model fingerprint: 0xe3c34b7c
Variable types: 44 continuous, 2027 integer (2027 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective -0.0000000
Presolve removed 4861 rows and 0 columns
Presolve time: 0.33s
Presolved: 54145 rows, 2071 columns, 164314 nonzeros
Variable types: 0 continuous, 2071 integer (2027 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 28560 rows, 27656 columns, 113144 nonzeros


Root relaxation: objective 3.000000e+01, 3754 iterations, 1.83 seconds (1.65 work units)
Total elapsed time = 5.23s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   30.00000    0  480    5.00000   30.00000   500%     -    5s
H    0     0                       6.0000000   30.00000   400%     -    6s
     0     0   30.00000    0  728    6.00000   30.00000   400%     -   14s
H    0     0                       7.0000000   30.00000   329%     -   14s
     0     0   30.00000    0  736    7.00000   30.00000   329%     -   14s
H    0     0                       8.0000000   30.00000   275%     -   31s
     0     0   30.00000    0  459    8.00000   30.00000   275%     -   33s
H    0     0                       9.0000000   30.00000   233%     -   34s
     0     0   30.00000    0  417    9.00000   30.00000   233%     -   34s
     0     0   30.00000    0  651    9.00000   30.00000   233%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 34
  MIR: 88
  Zero half: 49
  RLT: 62

Explored 1 nodes (50710 simplex iterations) in 50.04 seconds (44.05 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 9 8 7 ... -0

Time limit reached
Best objective 9.000000000000e+00, best bound 3.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo3152.43.sol'

