Running command: translateModel(Buildings.Fluid.Interfaces.Examples.FourPortHeatMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Fluid.Interfaces.Examples.FourPortHeatMassExchanger")
Notification: Performance of loadModel(Buildings): time 3.691/3.691, allocations: 402 MB / 416.6 MB, free: 10.18 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.437e-05/3.448e-05, allocations: 4 kB / 0.5009 GB, free: 8.246 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2153/0.2153, allocations: 92.69 MB / 0.5915 GB, free: 11.38 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Interfaces.Examples.FourPortHeatMassExchanger): time 0.5437/0.7591, allocations: 33.3 MB / 0.624 GB, free: 11.2 MB / 0.5105 GB
Notification: Performance of NFInst.instExpressions: time 0.02247/0.7816, allocations: 7.452 MB / 0.6313 GB, free: 6.051 MB / 0.5105 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002671/0.7844, allocations: 58.78 kB / 0.6313 GB, free: 6.031 MB / 0.5105 GB
Notification: Performance of NFTyping.typeComponents: time 0.003647/0.7881, allocations: 0.5651 MB / 0.6319 GB, free: 5.688 MB / 0.5105 GB
Notification: Performance of NFTyping.typeBindings: time 0.008883/0.797, allocations: 1.5 MB / 0.6333 GB, free: 4.633 MB / 0.5105 GB
Notification: Performance of NFTyping.typeClassSections: time 0.004832/0.8019, allocations: 0.9162 MB / 0.6342 GB, free: 4.199 MB / 0.5105 GB
Notification: Performance of NFFlatten.flatten: time 0.00573/0.8076, allocations: 1.598 MB / 0.6358 GB, free: 3.242 MB / 0.5105 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.001736/0.8094, allocations: 0.6046 MB / 0.6364 GB, free: 3.027 MB / 0.5105 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.003024/0.8125, allocations: 0.796 MB / 0.6372 GB, free: 2.656 MB / 0.5105 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.001967/0.8145, allocations: 0.528 MB / 0.6377 GB, free: 2.457 MB / 0.5105 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.003262/0.8178, allocations: 452.7 kB / 0.6381 GB, free: 2.336 MB / 0.5105 GB
Notification: Performance of NFPackage.collectConstants: time 0.000573/0.8184, allocations: 37.09 kB / 0.6381 GB, free: 2.336 MB / 0.5105 GB
Notification: Performance of NFScalarize.scalarize: time 0.0005167/0.8189, allocations: 195.7 kB / 0.6383 GB, free: 2.246 MB / 0.5105 GB
Notification: Performance of NFVerifyModel.verify: time 0.0009161/0.8199, allocations: 129.9 kB / 0.6384 GB, free: 2.246 MB / 0.5105 GB
Notification: Performance of NFConvertDAE.convert: time 0.003894/0.8238, allocations: 1.415 MB / 0.6398 GB, free: 1.902 MB / 0.5105 GB
Notification: Performance of FrontEnd - DAE generated: time 4.999e-06/0.8239, allocations: 0 / 0.6398 GB, free: 1.902 MB / 0.5105 GB
Notification: Performance of FrontEnd: time 3.276e-06/0.8239, allocations: 0 / 0.6398 GB, free: 1.902 MB / 0.5105 GB
Notification: Performance of Transformations before backend: time 6.666e-05/0.8239, allocations: 1.969 kB / 0.6398 GB, free: 1.902 MB / 0.5105 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 205
 * Number of variables: 205
Notification: Performance of Generate backend data structure: time 0.003488/0.8274, allocations: 1.181 MB / 0.641 GB, free: 1.105 MB / 0.5105 GB
Notification: Performance of prepare preOptimizeDAE: time 5.589e-05/0.8275, allocations: 16.59 kB / 0.641 GB, free: 1.098 MB / 0.5105 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001023/0.8286, allocations: 153.8 kB / 0.6411 GB, free: 1.027 MB / 0.5105 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.003098/0.8317, allocations: 0.9673 MB / 0.6421 GB, free: 448 kB / 0.5105 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.211e-05/0.8318, allocations: 60.53 kB / 0.6421 GB, free: 424 kB / 0.5105 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002139/0.832, allocations: 82.91 kB / 0.6422 GB, free: 396 kB / 0.5105 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002728/0.8348, allocations: 0.9789 MB / 0.6432 GB, free: 15.82 MB / 0.5261 GB
Notification: Performance of preOpt findStateOrder (simulation): time 4.445e-05/0.8349, allocations: 6.344 kB / 0.6432 GB, free: 15.82 MB / 0.5261 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000136/0.835, allocations: 36.83 kB / 0.6432 GB, free: 15.79 MB / 0.5261 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.608e-05/0.8351, allocations: 25.06 kB / 0.6432 GB, free: 15.79 MB / 0.5261 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002407/0.8375, allocations: 0.6742 MB / 0.6439 GB, free: 15.56 MB / 0.5261 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 0.00905/0.8466, allocations: 5.256 MB / 0.649 GB, free: 10.77 MB / 0.5261 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.001012/0.8477, allocations: 353.5 kB / 0.6494 GB, free: 10.54 MB / 0.5261 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0002793/0.848, allocations: 179.8 kB / 0.6495 GB, free: 10.34 MB / 0.5261 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.38e-05/0.848, allocations: 42.62 kB / 0.6496 GB, free: 10.29 MB / 0.5261 GB
Notification: Performance of pre-optimization done (n=33): time 3.496e-06/0.848, allocations: 0 / 0.6496 GB, free: 10.29 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=37): time 0.006811/0.8549, allocations: 1.893 MB / 0.6514 GB, free: 9.02 MB / 0.5261 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 8.298e-05/0.855, allocations: 139.9 kB / 0.6516 GB, free: 8.855 MB / 0.5261 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002156/0.8572, allocations: 0.9131 MB / 0.6525 GB, free: 8.34 MB / 0.5261 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001626/0.8574, allocations: 37.05 kB / 0.6525 GB, free: 8.301 MB / 0.5261 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0006736/0.8581, allocations: 0.5436 MB / 0.653 GB, free: 7.816 MB / 0.5261 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0002589/0.8583, allocations: 148.9 kB / 0.6532 GB, free: 7.688 MB / 0.5261 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 5.209e-05/0.8584, allocations: 15.84 kB / 0.6532 GB, free: 7.676 MB / 0.5261 GB
Notification: Performance of setup shared object (initialization): time 0.0001529/0.8586, allocations: 328.2 kB / 0.6535 GB, free: 7.355 MB / 0.5261 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007741/0.8593, allocations: 207.3 kB / 0.6537 GB, free: 7.254 MB / 0.5261 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009671/0.8603, allocations: 479.9 kB / 0.6542 GB, free: 6.797 MB / 0.5261 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0009085/0.8613, allocations: 288.4 kB / 0.6544 GB, free: 6.652 MB / 0.5261 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.895e-06/0.8613, allocations: 6.844 kB / 0.6544 GB, free: 6.648 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=86) (initialization): time 0.002465/0.8638, allocations: 0.7793 MB / 0.6552 GB, free: 6.254 MB / 0.5261 GB
Notification: Performance of prepare postOptimizeDAE: time 3.223e-05/0.8638, allocations: 8.875 kB / 0.6552 GB, free: 6.254 MB / 0.5261 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.962e-05/0.8639, allocations: 8.281 kB / 0.6552 GB, free: 6.254 MB / 0.5261 GB
Notification: Performance of postOpt tearingSystem (initialization): time 3.402e-05/0.8639, allocations: 14.62 kB / 0.6552 GB, free: 6.254 MB / 0.5261 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001166/0.8651, allocations: 183.8 kB / 0.6554 GB, free: 6.203 MB / 0.5261 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.009e-05/0.8651, allocations: 21.55 kB / 0.6554 GB, free: 6.195 MB / 0.5261 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001665/0.8668, allocations: 79.09 kB / 0.6555 GB, free: 6.16 MB / 0.5261 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001089/0.8669, allocations: 32.69 kB / 0.6555 GB, free: 6.156 MB / 0.5261 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 39
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (86):
 * Single equations (assignments): 86
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.0008015/0.8678, allocations: 305.8 kB / 0.6558 GB, free: 5.914 MB / 0.5261 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004004/0.8682, allocations: 102.4 kB / 0.6559 GB, free: 5.863 MB / 0.5261 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002014/0.8702, allocations: 0.575 MB / 0.6565 GB, free: 5.527 MB / 0.5261 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001521/0.8717, allocations: 0.524 MB / 0.657 GB, free: 5.176 MB / 0.5261 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.176e-06/0.8718, allocations: 0 / 0.657 GB, free: 5.176 MB / 0.5261 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0009069/0.8727, allocations: 254.1 kB / 0.6572 GB, free: 4.945 MB / 0.5261 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002261/0.8729, allocations: 12.28 kB / 0.6572 GB, free: 4.938 MB / 0.5261 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001285/0.8742, allocations: 56.67 kB / 0.6573 GB, free: 4.91 MB / 0.5261 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001189/0.8744, allocations: 28.7 kB / 0.6573 GB, free: 4.895 MB / 0.5261 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 0.001889/0.8763, allocations: 0.6581 MB / 0.658 GB, free: 4.406 MB / 0.5261 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.