
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 18:04:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1386.29.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/grafo1386.29.lp
Reading time = 0.34 seconds
: 104891 rows, 1479 columns, 315941 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 104891 rows, 1479 columns and 315941 nonzeros
Model fingerprint: 0x603a8a79
Variable types: 38 continuous, 1441 integer (1441 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 1.0000000
Presolve removed 44979 rows and 4 columns
Presolve time: 0.87s
Presolved: 59912 rows, 1475 columns, 181338 nonzeros
Variable types: 0 continuous, 1475 integer (1437 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1473 rows, 61385 columns, 182813 nonzeros


Root relaxation: objective 4.200000e+01, 1839 iterations, 0.65 seconds (0.53 work units)
Total elapsed time = 7.33s (DegenMoves)

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

     0     0   42.00000    0  377    7.00000   42.00000   500%     -    9s
H    0     0                       8.0000000   42.00000   425%     -   11s
     0     0   42.00000    0  665    8.00000   42.00000   425%     -   24s
H    0     0                       9.0000000   42.00000   367%     -   24s
     0     0   42.00000    0  602    9.00000   42.00000   367%     -   26s
     0     0   42.00000    0  555    9.00000   42.00000   367%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 42
  Cover: 10
  Clique: 23
  MIR: 112
  StrongCG: 1
  Zero half: 69
  RLT: 52
  BQP: 5

Explored 1 nodes (25882 simplex iterations) in 50.10 seconds (32.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.200000000000e+01, gap 366.6667%

Wrote result file './lp_solutions/grafo1386.29.sol'

