Coverage Issues

This page is supposed to provide an overview of remaining issues for all tested libraries. Therefore, failing models can get grouped by issue and short analyses and existing tickets can be added to guide the bug-fixing process.

Library Index

• Annex60
• BioChem
• Buildings
• ConPNlib
• FCSys
• HelmholtzMedia
• ModelicaByExample
• Modelica_Synchronous
• ModelicaTest_3.2.1
• ModelicaTest_3.2.2
• ModelicaTest_trunk
• MSL_3.1
• MSL_3.2.1
• MSL_3.2.2
• MSL_trunk
• OpenHydraulics
• Physiolibrary
• PlanarMechanics
• PNlib
• PowerSystems
• SystemDynamics
• ThermoPower
• ThermoSysPro

Annex60

Priority: high (3 matches)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3840	Incorrect message about cyclic parameters	new		somebody	defect	Future
#4223	Recursive BuildModel Test: Cross reference to previous run	new		Martin Sjölund	enhancement	Future
#4992	Should we skip some versions of the Buildings library in Hudson testing and in the OMC installer?	assigned		Martin Sjölund	task

BioChem

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

Buildings

Priority: blocker (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#6196	Undetected high-index DAE or incorrectly handled overdetermined initialization in Buildings model (was: Bogus linear tearing in Buildings model)	assigned		Karim Adbdelhak	defect	1.19.0
Priority: critical (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5975	Numerical problems with initialization of thermofluid model in BuildingSystems	new		Lennart Ochel	defect
Priority: high (9 matches)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3307	translation fails because of (lack of) potential and flow variables where all signals are inputs or outputs	new		somebody	defect	Future
#4236	Icon not rendered if visible annotation is used	assigned		Martin Sjölund	defect
#4785	Memory is never given back	new		somebody	defect
#4804	IDEAS.Buildings.Examples.Structure crashes OMEdit 32 bit on Windows 10	new		somebody	defect	NeedsInput
#4992	Should we skip some versions of the Buildings library in Hudson testing and in the OMC installer?	assigned		Martin Sjölund	task
#5744	Problems to simulate MSL models with OM nightly	assigned	Linux	Martin Sjölund	defect	Future
#5890	buildModel() fails with 'ModelicaSystem' object has no attribute 'buildModel'	reopened		Alachew Mengist	defect	Future
#6211	VDI6007.TestCaseXX models fail in Buildings	new		Andreas Heuermann	defect
#6263	Fix spurious remaining issues in the master testsuite	new		Adrian Pop	defect
Priority: normal (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5635	Multi(---) connection issue	assigned		Adeel Asghar	enhancement	2.0.0

ConPNlib

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

FCSys

Priority: high (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#2881	NFScodeDependency stack overflow	reopened		Per Östlund	defect	Future

HelmholtzMedia

Priority: high (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#6088	Remaining issues with HelmholtzMedia	new		Francesco Casella	defect

ModelicaByExample

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

Modelica_Synchronous

Priority: critical (2 matches)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#4215	Cannot access connectors within icon graphics or nested models	reopened		Adeel Asghar	defect
#6254	Backend fails with discrete-time first order model	assigned		Andreas Heuermann	defect
Priority: high (9 matches)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#2045	Initialisation of external object fails	assigned		Lennart Ochel	defect	Future
#3706	OMEdit does not render some icons	assigned		Adrian Pop	defect	Future
#4168	DAE index reduction in clocked partitions	new		Lennart Ochel	defect
#4238	OMEdit shows strange behavior when loading system libraries automatically	assigned		Adrian Pop	defect
#4272	Simulation Process Failed	accepted	Modelica_Synchronous	Lennart Ochel	discussion	Future
#5496	Model structure and Jacobian for vectorized models	new		Lennart Ochel	defect
#5632	Error creating an fmu with 'Modelica_DeviceDrivers' (1.7.1) block 'Blocks.Communication.UDPSend'	new	Modelica_DeviceDrivers, UDPSend, fmu	Lennart Ochel	defect
#6079	Conflict between modelica_synchronous and pulse source	new		Karim Adbdelhak	defect
#6371	Modelica_Synchronus FMUs not working	assigned	fmi, Modelica_Synchronus, clock,	Andreas Heuermann	defect

• pre-optimization module clockPartitioning (simulation) failed
  • ​Modelica_Synchronous.Examples.Elementary.RealSignals.HoldWithDAeffects2
  • ​Modelica_Synchronous.Examples.Elementary.RealSignals.SampleWithADeffects
  • ​Modelica_Synchronous.Examples.SimpleControlledDrive.ClockedWithDiscretizedContinuousController
  • ​Modelica_Synchronous.Examples.SimpleControlledDrive.ClockedWith_AD_DA_Effects
  • ​Modelica_Synchronous.Examples.Systems.ControlledMixingUnit
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestEventClockWithIntegrator
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestExactClockWithIntegrator
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestReplaceableSamplerHold
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestSimulatedADC

• Segmentation fault
  • ​Modelica_Synchronous.WorkInProgress.ForDocumentation.TheDifferentClocks

• function createSimCode failed [Transformation from optimised DAE to simulation code structure failed]
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestBooleanSamplerAndHolds
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestIntegerSamplerAndHolds

• Error occurred while flattening
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestExactClockWithSolver
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestFIR
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestFIR_Step
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestFIR_Step2
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestInterpolator
  • ​Modelica_Synchronous.WorkInProgress.Tests.TestUnitDelay

ModelicaTest_3.2.1

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

• FrontEnd issues:
  • ​ModelicaTest.Fluid.Dissipation.Verifications.PressureLoss.StraightPipe.dp_twoPhaseOverall_DP
  • ​ModelicaTest.Fluid.TestComponents.Fittings.TestWallFriction
  • ​ModelicaTest.Math.MatricesInModel
  • ​ModelicaTest.Media.TestAllProperties.MoistAir

• Division by zero at initialization:
  • ​ModelicaTest.Fluid.TestComponents.NewFittings.Bends.CurvedBend
  • ​ModelicaTest.Fluid.TestComponents.NewFittings.Bends.EdgedBend
  • ​ModelicaTest.Fluid.TestComponents.NewFittings.Orifices.ThickEdgedOrifice

• Assert in non-linear loops or fail to solve a non-linear system at initialization:
  • ​ModelicaTest.Fluid.TestComponents.Fittings.TestSuddenExpansion
  • ​ModelicaTest.Fluid.TestExamplesVariants.HeatingSystem_SteadyState
  • ​ModelicaTest.Fluid.TestPipesAndValves.LumpedPipeInitialization
  • ​ModelicaTest.Fluid.TestExamplesVariants.HeatingSystem_FixedInitial

• Simulation terminated by an assert:
  • ​ModelicaTest.Fluid.TestComponents.Sensors.TestTemperature1
  • ​ModelicaTest.Fluid.TestComponents.Vessels.TestSimpleTank
  • ​ModelicaTest.MultiBody.Joints.SphericalSpherical2
  • ​ModelicaTest.MultiBody.Joints.UniversalSpherical

ModelicaTest_3.2.2

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

ModelicaTest_trunk

Priority: blocker (2 matches)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5036	Better code generation for constant arrays	new		Lennart Ochel	defect	2.0.0
#5590	Bad dynamic state selection leads to singular initialization	new		Karim Adbdelhak	defect	1.19.0
Priority: high (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3963	Split C source code in more files for more efficient parallel compilation	new		Lennart Ochel	enhancement

MSL_3.1

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

MSL_3.2.1

Priority: high (2 matches)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3069	Model needs very long simulation time with Cellier Tearing	accepted	MSL_3.2.1	Patrick Täuber	defect	Future
#3729	Models of trunk/Modelica that do not simulate in OpenModelica (and are not present in MSL 3.2.1 failed simulations)	new		somebody	defect	Future

Following 5 models are missing for the full coverage of the cRuntime here.

• ​Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_YD
  • fails with alarm clock
  • works in our testsuite, because omcTearing is used
  • IndexReduction seems okay
  • works with a different sorting -> +preOptModules+=sortEqnsVars
  • -> probably really a tearing issue of select corrent iteration variable

• ​Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SMEE_Generator_MultiPhase
  • singular linear system while simulation, initialization is solved via totalpivot
  • works with different sorting -> +preOptModules+=sortEqnsVars or other remove simple equation module +removeSimpleEquations=none|new
  • fails without tearing
  • -> most likely an IndexReduction issue #3691

• ​Modelica.Electrical.Spice3.Examples.Spice3BenchmarkDifferentialPair
  • Combination of Nonlinear and Dassl > initialization passes -> solver
  • the algebraic loops differs a lot compared with dymola 52 varibale and we have 29.
  • IndexReduction seems okay.
  • -> perhaps bad algorithm handling

• ​Modelica.Fluid.Examples.Explanatory.MomentumBalanceFittings
  • non-linear system fails at initialization
  • dymola also struggles with it
  • -> stream handling, non-linear solver issue or model error

• ​Modelica.Fluid.Examples.HeatingSystem
  • non-linear system fails at initialization
  • has dynamic stateSelection, but even with "stateSelect" always on dymola states it fails.
  • non-linear problem that fails is mixed
  • homotopy is used
  • -> perhaps mixed non-linear problem or homotopy handling

MSL_3.2.2

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
No tickets found

MSL_trunk

Priority: blocker (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5347	Issues with MSL library handling in Linux	reopened		Martin Sjölund	defect	1.19.0
Priority: high (3 matches)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3464	Failing variable lookup during array creation	new		Marcus Walther	defect	Future
#3729	Models of trunk/Modelica that do not simulate in OpenModelica (and are not present in MSL 3.2.1 failed simulations)	new		somebody	defect	Future
#3800	Verification of nightly tests lacking absolute tolerance	new		Adrian Pop	defect	Future

The following models fail within runtime stage:

• Solving (non-)linear system failed during simulation:
  • ​Modelica.Electrical.Analog.Examples.OpAmps.Multivibrator
  • ​Modelica.Electrical.Analog.Examples.OpAmps.SignalGenerator
  • ​Modelica.Electrical.Spice3.Examples.Spice3BenchmarkDifferentialPair
  • ​Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.AIMC_DOL_MultiPhase
  • ​Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SMEE_Generator_MultiPhase
    • ticket:3739
  • ​Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_DOL
    • linear system failed
• Solving non-linear system failed during initialization:
  • ​Modelica.Fluid.Examples.Explanatory.MomentumBalanceFittings
    • While solving non-linear system an assertion failed during initialization.
  • ​Modelica.Fluid.Examples.HeatingSystem
    • While solving non-linear system an assertion failed during initialization.
    • ticket:3739

The following models fail due to alarm clock:

• ​Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_YD
• ​Modelica.Electrical.Spice3.Examples.Spice3BenchmarkFourBitBinaryAdder
• ​Modelica.Fluid.Examples.IncompressibleFluidNetwork

The following models fail within (back end) initialization stage:

• ​Modelica.Magnetic.FluxTubes.Examples.Hysteresis.ThreePhaseTransformerWithRectifier
  • Initialization problem is structurally singular
  • ticket:3739
• ​Modelica.Mechanics.Rotational.Examples.GenerationOfFMUs
  • Error: The given system is mixed-determined. [index > 3]
  • ticket:3739

The following models fail within sim code/code generation stage:

• ​Modelica.Media.Examples.SolveOneNonlinearEquation.InverseIncompressible_sh_T
  • error: use of undeclared identifier '_poly_Cp'
• ​Modelica.Media.Incompressible.Examples.TestGlycol
  • error: use of undeclared identifier '_poly_Cp'
• ​Modelica.Utilities.Examples.ReadRealMatrixFromFile
  • [SimCodeUtil.mo:497:5-497:146:writable] Error: Internal error function createSimCode failed
  • ticket:3739

OpenHydraulics

Priority: normal (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5683	Mediums in fluid systems require explicit redeclare in OMEdit	new	Fluid, Medium	somebody	defect	Future

Physiolibrary

Priority: critical (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#6315	Issue with initial equation generation in Physiolibrary	new		Karim Adbdelhak	defect
Priority: high (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#6301	Generation of documentation gets stuck	new		Adrian Pop	defect

PlanarMechanics

Priority: high (2 matches)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3397	Sorting of algebraic loops can affect solvability	new		somebody	defect	Future
#5744	Problems to simulate MSL models with OM nightly	assigned	Linux	Martin Sjölund	defect	Future

PNlib

Priority: blocker (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#2894	Summary of improvements for OMEdit GUI usability	accepted		Adeel Asghar	enhancement	2.0.0
Priority: critical (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#4050	Array of component: Too many equations.	new	PNlib	Lennart Ochel	defect	2.0.0
Priority: high (2 matches)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3495	Issue with array indices in generated code	accepted		Mahder Alemseged Gebremedhin	defect	Future
#4412	Error with Protected Elements	accepted	protected, PNlib	Lennart Ochel	defect

PowerSystems

Priority: blocker (2 matches)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5302	PowerSystems models with redundant intial conditions cannot be handled by backend	new		Lennart Ochel	defect	2.0.0
#6126	Error while compiling wind turbine model from PowerSystems library	assigned		Per Östlund	defect	1.19.0
Priority: critical (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3186	Partial binding of record sub-components in functions are lost	assigned		Per Östlund	defect	2.0.0
Priority: high (5 matches)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3997	Missing replacement of identifiers when inlining functions	assigned		Adrian Pop	defect	Future
#4003	OMEdit uses wrong modelica:// path	reopened		Adrian Pop	defect
#4041	Wrong structural singular equation system	assigned		somebody	defect
#5499	setParameters of ModelicaSystem has no effect on simulation	new		Alachew Mengist	defect	Future
#5822	PowerSystems sensor model segfaults during matching	new		Lennart Ochel	defect	Future

SystemDynamics

Priority: high (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5744	Problems to simulate MSL models with OM nightly	assigned	Linux	Martin Sjölund	defect	Future

ThermoPower

Priority: blocker (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#2894	Summary of improvements for OMEdit GUI usability	accepted		Adeel Asghar	enhancement	2.0.0
Priority: high (15 matches)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#3015	OMEdit Plots are not correct	assigned		Adeel Asghar	defect	Future
#3111	Convergence issues on nonlinear equations involving der()	accepted		Willi Braun	defect
#3116	Make warning/error message from the nonlinear solver more informative	new		somebody	defect
#3117	Evaluate functions of parameters/constants only once (required by data-based interpolation functions)	new		somebody	enhancement	Future
#3118	Convergence issues on nonlinear equations not involving der()	accepted		Willi Braun	defect
#3843	Write .log file directly to disk	new		somebody	defect
#5141	Issues with the solution of fluid system models with low delta-p components	new		Lennart Ochel	defect
#5341	OMEdit claiming flowrate variable is not constant	new	variable, constant, ThermoPower, translation, error	Lennart Ochel	defect	Future
#5351	HRSG Cloned Library Component / re-occuring pump error	assigned	pump, flowCharacteristic, q_nom, head_nom, ThermoPower	Francesco Casella	defect	2.0.0
#5363	Is it currently possible to create/model systems off of the ThermoPower Library in OpenModelica?	assigned	ThermoPower, Rankine	Adrian Pop	discussion	Future
#5368	Nightly Build 1.14.0 giving odd Syntax Warnings and Effecting Old Simulation Results	new	Brayton, Nightly, Build, NightlyBuild	somebody	defect	Future
#5371	Heat Exchanger Model works & simulates but doesn't actually transfer energy to raise outlet temperature	new	HE, results, simulation, FlueGas, Water, ThermoPower	Lennart Ochel	defect	Future
#5374	How do I solve Modelica errors of variables, where the variables are parameters of extensions that your model is using?	new	Error, Structurally, Singular, Structurally Singular, Translation Error, Variable Not Found,	somebody	discussion	Future
#5376	How can I simulate my models better and more specifically?	new	HX, Heat Exchanger, Simulation	Lennart Ochel	defect	Future
#5414	Unsolvable Error pertaining to variable not found within model	new		Lennart Ochel	defect	Future
Priority: normal (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5688	Use of removed conditional component not reported	new		Per Östlund	defect	Future

• FrontEnd
  • ​ThermoPower.Examples.HRB.Simulators.OpenLoopSimulatorHtc

• non-linear system an assertion failed during initialization:
  • ​ThermoPower.PowerPlants.Simulators.CCPP_Sim3 (BUG: 3825)
  • ​ThermoPower.PowerPlants.Simulators.SteamPlant_Sim1 (BUG: 3825)
  • ​ThermoPower.PowerPlants.Simulators.SteamPlant_Sim1_dp (BUG: 3825)
  • ​ThermoPower.PowerPlants.Simulators.SteamPlant_Sim2 (BUG: 3825)

• alarm clock -> nonlinear algebraic loops(?!?)
  • ​ThermoPower.Examples.RankineCycle.Simulators.ClosedLoop (initialization)

ThermoSysPro

Priority: critical (1 match)

Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#5725	Issues with start values in ThermoSysPro	new		Karim Adbdelhak	defect
Priority: high (1 match)
Ticket	Summary	Status	Keywords	Owner	Type	Milestone
#4429	Builtin function cardinality is not implemented in Ceval.cevalBuiltinHandler	new	cardinality. ThermoSysPro	Adrian Pop	defect	Future

• Solving non-linear system at initialization:
  • ​ThermoSysPro.Examples.SimpleExamples.TestCentrifugalPump7
  • ​ThermoSysPro.Examples.SimpleExamples.TestDynamicWaterHeating
  • ​ThermoSysPro.Examples.SimpleExamples.TestNTUWaterHeating2
  • ​ThermoSysPro.Examples.SimpleExamples.TestStaticCondenser
  • ​ThermoSysPro.Examples.SimpleExamples.TestWaterHammer

• Solving non-linear system during simulation:
  • ​ThermoSysPro.Examples.CombinedCyclePowerPlant.CombinedCycle_TripTAC
  • ​ThermoSysPro.Examples.SimpleExamples.TestVolumes2