Running command: translateModel(Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating")
Notification: Performance of loadModel(Buildings): time 3.762/3.762, allocations: 402 MB / 416.6 MB, free: 10.11 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.042e-05/3.058e-05, allocations: 0 / 0.5009 GB, free: 8.227 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2126/0.2126, allocations: 92.69 MB / 0.5915 GB, free: 11.36 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating): time 0.7298/0.9426, allocations: 92.55 MB / 0.6819 GB, free: 15.89 MB / 0.5573 GB
Notification: Performance of NFInst.instExpressions: time 0.04787/0.9905, allocations: 20.17 MB / 0.7015 GB, free: 13.8 MB / 0.573 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.005511/0.9961, allocations: 151.2 kB / 0.7017 GB, free: 13.65 MB / 0.573 GB
Notification: Performance of NFTyping.typeComponents: time 0.006761/1.003, allocations: 1.325 MB / 0.703 GB, free: 12.32 MB / 0.573 GB
Notification: Performance of NFTyping.typeBindings: time 0.01418/1.017, allocations: 2.948 MB / 0.7059 GB, free: 9.359 MB / 0.573 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01573/1.033, allocations: 3.616 MB / 0.7094 GB, free: 5.762 MB / 0.573 GB
Notification: Performance of NFFlatten.flatten: time 0.01145/1.044, allocations: 3.598 MB / 0.7129 GB, free: 2.152 MB / 0.573 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.004286/1.049, allocations: 1.694 MB / 0.7146 GB, free: 468 kB / 0.573 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.007137/1.056, allocations: 2.033 MB / 0.7165 GB, free: 14.42 MB / 0.5886 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.003986/1.06, allocations: 1.354 MB / 0.7179 GB, free: 13.06 MB / 0.5886 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.005538/1.066, allocations: 0.9986 MB / 0.7188 GB, free: 12.06 MB / 0.5886 GB
Notification: Performance of NFPackage.collectConstants: time 0.001307/1.067, allocations: 112 kB / 0.719 GB, free: 11.95 MB / 0.5886 GB
Notification: Performance of NFScalarize.scalarize: time 0.0009556/1.068, allocations: 0.5017 MB / 0.7194 GB, free: 11.45 MB / 0.5886 GB
Notification: Performance of NFVerifyModel.verify: time 0.001509/1.069, allocations: 288 kB / 0.7197 GB, free: 11.16 MB / 0.5886 GB
Notification: Performance of NFConvertDAE.convert: time 0.008896/1.078, allocations: 4.339 MB / 0.724 GB, free: 6.816 MB / 0.5886 GB
Notification: Performance of FrontEnd - DAE generated: time 5.08e-06/1.078, allocations: 0 / 0.724 GB, free: 6.816 MB / 0.5886 GB
Notification: Performance of FrontEnd: time 3.427e-06/1.078, allocations: 0 / 0.724 GB, free: 6.816 MB / 0.5886 GB
Notification: Performance of Transformations before backend: time 0.0001709/1.079, allocations: 0 / 0.724 GB, free: 6.816 MB / 0.5886 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 513
 * Number of variables: 513
Notification: Performance of Generate backend data structure: time 0.008678/1.087, allocations: 2.666 MB / 0.7266 GB, free: 4.082 MB / 0.5886 GB
Notification: Performance of prepare preOptimizeDAE: time 5.478e-05/1.087, allocations: 15.91 kB / 0.7266 GB, free: 4.066 MB / 0.5886 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01053/1.098, allocations: 1.139 MB / 0.7277 GB, free: 2.922 MB / 0.5886 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.007498/1.105, allocations: 2.514 MB / 0.7301 GB, free: 344 kB / 0.5886 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001888/1.106, allocations: 164 kB / 0.7303 GB, free: 176 kB / 0.5886 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006704/1.106, allocations: 224 kB / 0.7305 GB, free: 15.95 MB / 0.6042 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01194/1.118, allocations: 2.996 MB / 0.7334 GB, free: 12.75 MB / 0.6042 GB
Notification: Performance of preOpt findStateOrder (simulation): time 7.384e-05/1.118, allocations: 3.938 kB / 0.7334 GB, free: 12.74 MB / 0.6042 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003686/1.119, allocations: 95.86 kB / 0.7335 GB, free: 12.65 MB / 0.6042 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.84e-05/1.119, allocations: 56 kB / 0.7336 GB, free: 12.6 MB / 0.6042 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01391/1.133, allocations: 2.688 MB / 0.7362 GB, free: 9.906 MB / 0.6042 GB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03209/1.165, allocations: 13.92 MB / 0.7498 GB, free: 11.06 MB / 0.6198 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.02257/1.188, allocations: 3.172 MB / 0.7529 GB, free: 7.852 MB / 0.6198 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.001715/1.189, allocations: 1.053 MB / 0.7539 GB, free: 6.578 MB / 0.6198 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.45e-05/1.19, allocations: 59.56 kB / 0.754 GB, free: 6.512 MB / 0.6198 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.002422/1.192, allocations: 270.4 kB / 0.7542 GB, free: 6.246 MB / 0.6198 GB
Notification: Performance of pre-optimization done (n=123): time 6.613e-06/1.192, allocations: 0 / 0.7542 GB, free: 6.246 MB / 0.6198 GB
Notification: Performance of matching and sorting (n=130): time 0.03966/1.232, allocations: 7.348 MB / 0.7614 GB, free: 14.8 MB / 0.6355 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002877/1.232, allocations: 0.5228 MB / 0.7619 GB, free: 14.15 MB / 0.6355 GB
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter hex.valHea.res3.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter hex.valHea.res3.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter hex.valHea.res1.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter hex.valHea.res1.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter hex.valCoo.res3.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter hex.valCoo.res3.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter hex.valCoo.res1.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter hex.valCoo.res1.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005807/1.238, allocations: 2.036 MB / 0.7639 GB, free: 12.1 MB / 0.6355 GB
Notification: Performance of collectPreVariables (initialization): time 0.0005426/1.238, allocations: 61.7 kB / 0.764 GB, free: 12.04 MB / 0.6355 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001961/1.24, allocations: 1.329 MB / 0.7653 GB, free: 10.7 MB / 0.6355 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0009409/1.241, allocations: 461.3 kB / 0.7657 GB, free: 10.24 MB / 0.6355 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002591/1.242, allocations: 40 kB / 0.7658 GB, free: 10.2 MB / 0.6355 GB
Notification: Performance of setup shared object (initialization): time 0.000244/1.242, allocations: 377.9 kB / 0.7661 GB, free: 9.824 MB / 0.6355 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005669/1.248, allocations: 1.128 MB / 0.7672 GB, free: 8.695 MB / 0.6355 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006437/1.254, allocations: 1.686 MB / 0.7689 GB, free: 6.785 MB / 0.6355 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006044/1.26, allocations: 1.277 MB / 0.7701 GB, free: 5.512 MB / 0.6355 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.886e-05/1.26, allocations: 4 kB / 0.7701 GB, free: 5.508 MB / 0.6355 GB
Notification: Performance of matching and sorting (n=233) (initialization): time 0.01881/1.279, allocations: 3.587 MB / 0.7736 GB, free: 1.906 MB / 0.6355 GB
Notification: Performance of prepare postOptimizeDAE: time 0.002142/1.281, allocations: 4.816 MB / 0.7783 GB, free: 12.7 MB / 0.6511 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.509e-05/1.281, allocations: 16 kB / 0.7783 GB, free: 12.68 MB / 0.6511 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01579/1.297, allocations: 1.69 MB / 0.78 GB, free: 10.99 MB / 0.6511 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004024/1.301, allocations: 459.4 kB / 0.7804 GB, free: 10.54 MB / 0.6511 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007967/1.309, allocations: 1.957 MB / 0.7823 GB, free: 8.555 MB / 0.6511 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006111/1.316, allocations: 423.4 kB / 0.7827 GB, free: 8.141 MB / 0.6511 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000594/1.316, allocations: 87.95 kB / 0.7828 GB, free: 8.055 MB / 0.6511 GB
Notification: Performance of prepare postOptimizeDAE: time 1.575e-05/1.316, allocations: 7.938 kB / 0.7828 GB, free: 8.047 MB / 0.6511 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01324/1.329, allocations: 2.929 MB / 0.7857 GB, free: 5.113 MB / 0.6511 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.438e-05/1.33, allocations: 15.98 kB / 0.7857 GB, free: 5.098 MB / 0.6511 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01501/1.345, allocations: 1.578 MB / 0.7872 GB, free: 3.516 MB / 0.6511 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003804/1.348, allocations: 427.4 kB / 0.7877 GB, free: 3.098 MB / 0.6511 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005871/1.354, allocations: 1.747 MB / 0.7894 GB, free: 1.324 MB / 0.6511 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00526/1.36, allocations: 347.3 kB / 0.7897 GB, free: 0.9844 MB / 0.6511 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005473/1.36, allocations: 91.95 kB / 0.7898 GB, free: 0.8945 MB / 0.6511 GB
Warning: Assuming fixed start value for the following 1 variables:
         hex.valHea.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = hex.valHea.vol.V * hex.valHea.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 51
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (185):
 * Single equations (assignments): 176
 * Array equations: 4
 * Algorithm blocks: 0
 * Record equations: 4
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 0
 * Non-linear torn systems: 1 {5 36}
Notification: Performance of prepare postOptimizeDAE: time 0.002437/1.363, allocations: 0.6417 MB / 0.7904 GB, free: 248 kB / 0.6511 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009522/1.364, allocations: 257 kB / 0.7907 GB, free: 15.98 MB / 0.6667 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0174/1.381, allocations: 2.98 MB / 0.7936 GB, free: 13 MB / 0.6667 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01545/1.397, allocations: 2.695 MB / 0.7962 GB, free: 10.21 MB / 0.6667 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.403e-05/1.397, allocations: 4 kB / 0.7962 GB, free: 10.2 MB / 0.6667 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.002178/1.399, allocations: 0.5794 MB / 0.7968 GB, free: 9.602 MB / 0.6667 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0009127/1.4, allocations: 35.98 kB / 0.7968 GB, free: 9.566 MB / 0.6667 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.005116/1.405, allocations: 335.5 kB / 0.7971 GB, free: 9.238 MB / 0.6667 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004761/1.406, allocations: 89.17 kB / 0.7972 GB, free: 9.152 MB / 0.6667 GB
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
Notification: Performance of <failed> postOpt createDAEmodeBDAE (simulation): time 0.01239/1.418, allocations: 1.917 MB / 0.7991 GB, free: 7.227 MB / 0.6667 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.