
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:47:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3445.37.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/grafo3445.37.lp
Reading time = 0.14 seconds
: 86283 rows, 1946 columns, 260490 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 86283 rows, 1946 columns and 260490 nonzeros
Model fingerprint: 0xdb947c0e
Variable types: 43 continuous, 1903 integer (1903 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]
Presolve removed 34166 rows and 58 columns
Presolve time: 0.54s
Presolved: 52117 rows, 1888 columns, 158351 nonzeros
Variable types: 0 continuous, 1888 integer (1845 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 1888 rows, 54005 columns, 160239 nonzeros


Root relaxation: objective 4.700000e+01, 3048 iterations, 1.03 seconds (1.08 work units)
Total elapsed time = 10.50s (DegenMoves)

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

     0     0   47.00000    0  627    8.00000   47.00000   487%     -   11s
H    0     0                       9.0000000   47.00000   422%     -   11s
H    0     0                      11.0000000   47.00000   327%     -   11s
     0     0   47.00000    0  815   11.00000   47.00000   327%     -   22s
H    0     0                      12.0000000   47.00000   292%     -   22s
     0     0   47.00000    0  769   12.00000   47.00000   292%     -   23s
     0     0   47.00000    0  724   12.00000   47.00000   292%     -   50s

Cutting planes:
  Gomory: 5
  Cover: 5
  Clique: 8
  MIR: 159
  StrongCG: 1
  Zero half: 58
  RLT: 105
  BQP: 1

Explored 1 nodes (40992 simplex iterations) in 50.07 seconds (42.86 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 9 8 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.700000000000e+01, gap 291.6667%

Wrote result file './lp_solutions/grafo3445.37.sol'

