
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:47:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6411.45.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/grafo6411.45.lp
Reading time = 0.20 seconds
: 126208 rows, 2828 columns, 381166 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 126208 rows, 2828 columns and 381166 nonzeros
Model fingerprint: 0x88e32b3b
Variable types: 54 continuous, 2774 integer (2774 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 29749 rows and 37 columns
Presolve time: 0.93s
Presolved: 96459 rows, 2791 columns, 292468 nonzeros
Variable types: 0 continuous, 2791 integer (2737 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2791 rows, 99250 columns, 295259 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20384    5.5872220e+01   0.000000e+00   8.998994e+04      5s
   40184    5.5850079e+01   0.000000e+00   6.183159e+03     10s
   58320    5.6000000e+01   0.000000e+00   0.000000e+00     15s
   58320    5.6000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.600000e+01, 58320 iterations, 13.98 seconds (11.28 work units)
Total elapsed time = 33.01s (DegenMoves)

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

     0     0   56.00000    0  771    9.00000   56.00000   522%     -   34s
H    0     0                      11.0000000   56.00000   409%     -   34s
     0     0          -    0        11.00000   56.00000   409%     -   50s

Cutting planes:
  Gomory: 42
  Cover: 39
  Clique: 10
  MIR: 162
  GUB cover: 6
  Zero half: 52
  RLT: 36
  BQP: 1

Explored 1 nodes (81397 simplex iterations) in 50.03 seconds (45.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.600000000000e+01, gap 409.0909%

Wrote result file './lp_solutions/grafo6411.45.sol'

