
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:04:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3608.42.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/grafo3608.42.lp
Reading time = 0.31 seconds
: 150153 rows, 2254 columns, 452256 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 150153 rows, 2254 columns and 452256 nonzeros
Model fingerprint: 0x2da35dd1
Variable types: 44 continuous, 2210 integer (2210 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 55159 rows and 3 columns
Presolve time: 1.13s
Presolved: 94994 rows, 2251 columns, 287051 nonzeros
Variable types: 0 continuous, 2251 integer (2207 binary)
Root relaxation presolved: 2247 rows, 97241 columns, 289302 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17210    5.1897913e+01   0.000000e+00   1.800650e+05      5s
   38012    5.1803986e+01   0.000000e+00   9.104346e+03     10s
   58802    5.1796095e+01   0.000000e+00   3.536443e+01     15s
   59931    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   59931    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   59931    5.2000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.200000e+01, 59931 iterations, 13.97 seconds (8.09 work units)
Total elapsed time = 30.15s (DegenMoves)

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

     0     0   52.00000    0  460          -   52.00000      -     -   34s
H    0     0                       6.0000000   52.00000   767%     -   34s
H    0     0                      10.0000000   52.00000   420%     -   34s
     0     0   52.00000    0  728   10.00000   52.00000   420%     -   48s
H    0     0                      11.0000000   52.00000   373%     -   49s
     0     0          -    0        11.00000   52.00000   373%     -   50s

Cutting planes:
  Cover: 1
  Clique: 20
  MIR: 73
  Zero half: 9
  RLT: 27
  BQP: 2

Explored 1 nodes (79961 simplex iterations) in 50.03 seconds (41.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 10 6 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.200000000000e+01, gap 372.7273%

Wrote result file './lp_solutions/grafo3608.42.sol'

