
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:18:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7433.44.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/grafo7433.44.lp
Reading time = 0.16 seconds
: 103622 rows, 2548 columns, 313078 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 103622 rows, 2548 columns and 313078 nonzeros
Model fingerprint: 0x8cfc209e
Variable types: 50 continuous, 2498 integer (2498 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 7.0000000
Presolve removed 21394 rows and 24 columns
Presolve time: 0.69s
Presolved: 82228 rows, 2524 columns, 249313 nonzeros
Variable types: 0 continuous, 2524 integer (2474 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2524 rows, 84752 columns, 251837 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22494    4.6710006e+01   0.000000e+00   1.111270e+04      5s
   42610    4.7000000e+01   0.000000e+00   0.000000e+00      9s
   42610    4.7000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.700000e+01, 42610 iterations, 8.66 seconds (7.22 work units)
Total elapsed time = 22.29s (DegenMoves)

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

     0     0   47.00000    0  456   12.00000   47.00000   292%     -   24s
H    0     0                      16.0000000   47.00000   194%     -   24s
     0     0   47.00000    0  976   16.00000   47.00000   194%     -   38s
     0     0   47.00000    0  927   16.00000   47.00000   194%     -   40s
     0     0          -    0        16.00000   47.00000   194%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 37
  Cover: 6
  Clique: 10
  MIR: 111
  Zero half: 38
  RLT: 56
  BQP: 4

Explored 1 nodes (69734 simplex iterations) in 50.02 seconds (46.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 16 12 7 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.700000000000e+01, gap 193.7500%

Wrote result file './lp_solutions/grafo7433.44.sol'

