
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:33:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7125.42.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/grafo7125.42.lp
Reading time = 0.10 seconds
: 66248 rows, 2154 columns, 200436 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 66248 rows, 2154 columns and 200436 nonzeros
Model fingerprint: 0x358b4464
Variable types: 45 continuous, 2109 integer (2109 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 3.0000000
Presolve removed 8942 rows and 28 columns
Presolve time: 0.43s
Presolved: 57306 rows, 2126 columns, 174051 nonzeros
Variable types: 0 continuous, 2126 integer (2081 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2120 rows, 59426 columns, 176177 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29475    4.1965315e+01   0.000000e+00   4.141113e+02      5s
   38245    4.2000000e+01   0.000000e+00   0.000000e+00      7s
   38245    4.2000000e+01   0.000000e+00   0.000000e+00      7s
   38245    4.2000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.200000e+01, 38245 iterations, 6.17 seconds (4.90 work units)
Total elapsed time = 11.23s (DegenMoves)

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

     0     0   42.00000    0  356    7.00000   42.00000   500%     -   13s
H    0     0                      12.0000000   42.00000   250%     -   13s
     0     0   42.00000    0  584   12.00000   42.00000   250%     -   16s
     0     0   42.00000    0  567   12.00000   42.00000   250%     -   17s
H    0     0                      14.0000000   42.00000   200%     -   32s
H    0     0                      15.0000000   42.00000   180%     -   32s
     0     0   42.00000    0  414   15.00000   42.00000   180%     -   32s
     0     0   42.00000    0  452   15.00000   42.00000   180%     -   33s
H    0     0                      18.0000000   42.00000   133%     -   41s
     0     0   42.00000    0  518   18.00000   42.00000   133%     -   41s
     0     0   42.00000    0  563   18.00000   42.00000   133%     -   42s
     0     0   42.00000    0  550   18.00000   42.00000   133%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 7
  Clique: 3
  MIR: 112
  StrongCG: 1
  Zero half: 29
  RLT: 58

Explored 1 nodes (87048 simplex iterations) in 50.06 seconds (45.95 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 18 15 14 ... 3

Time limit reached
Best objective 1.800000000000e+01, best bound 4.200000000000e+01, gap 133.3333%

Wrote result file './lp_solutions/grafo7125.42.sol'

