Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(IBPSA.Fluid.Examples.Performance.Example2,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Examples_Performance_Example2",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.Examples.Performance.Example2,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Examples_Performance_Example2",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001098/0.001098, allocations: 107 kB / 16.27 MB, free: 5.93 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001088/0.001088, allocations: 190.8 kB / 17.2 MB, free: 5.574 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.234/1.234, allocations: 222.9 MB / 240.9 MB, free: 15.22 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7128/0.7128, allocations: 122.8 MB / 413.9 MB, free: 15.86 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001405/0.001405, allocations: 63.89 kB / 0.4912 GB, free: 7.359 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2936/0.295, allocations: 77.92 MB / 0.5673 GB, free: 32.84 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Examples.Performance.Example2): time 0.02379/0.3189, allocations: 30.02 MB / 0.5966 GB, free: 10.5 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.014/0.3329, allocations: 11.73 MB / 0.608 GB, free: 1.02 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001607/0.3346, allocations: 51.69 kB / 0.6081 GB, free: 0.9688 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 0.007426/0.342, allocations: 3.924 MB / 0.6119 GB, free: 13.03 MB / 462.1 MB Notification: Performance of NFTyping.typeBindings: time 0.004088/0.3461, allocations: 1.52 MB / 0.6134 GB, free: 11.5 MB / 462.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003314/0.3494, allocations: 1.394 MB / 0.6148 GB, free: 10.12 MB / 462.1 MB Notification: Performance of NFFlatten.flatten: time 0.008134/0.3576, allocations: 6.617 MB / 0.6212 GB, free: 3.492 MB / 462.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001938/0.3595, allocations: 1.365 MB / 0.6226 GB, free: 2.09 MB / 462.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.002764/0.3623, allocations: 1.454 MB / 0.624 GB, free: 0.6328 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001513/0.3638, allocations: 1.089 MB / 0.625 GB, free: 15.54 MB / 478.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0003122/0.3642, allocations: 120 kB / 0.6252 GB, free: 15.42 MB / 478.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002498/0.3667, allocations: 1.299 MB / 0.6264 GB, free: 14.12 MB / 478.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0005278/0.3672, allocations: 0.5217 MB / 0.6269 GB, free: 13.6 MB / 478.1 MB Notification: Performance of NFVerifyModel.verify: time 0.001155/0.3684, allocations: 0.9638 MB / 0.6279 GB, free: 12.63 MB / 478.1 MB Notification: Performance of NFConvertDAE.convert: time 0.003452/0.3718, allocations: 2.975 MB / 0.6308 GB, free: 9.645 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.186e-06/0.3719, allocations: 0 / 0.6308 GB, free: 9.645 MB / 478.1 MB Notification: Performance of FrontEnd: time 1.312e-06/0.3719, allocations: 4 kB / 0.6308 GB, free: 9.641 MB / 478.1 MB Notification: Performance of Transformations before backend: time 4.882e-05/0.3719, allocations: 0 / 0.6308 GB, free: 9.641 MB / 478.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 192 * Number of variables: 192 Notification: Performance of Generate backend data structure: time 0.003774/0.3757, allocations: 2.345 MB / 0.6331 GB, free: 7.227 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.687e-05/0.3757, allocations: 12.56 kB / 0.6331 GB, free: 7.215 MB / 478.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001479/0.3759, allocations: 122.7 kB / 0.6332 GB, free: 7.086 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001833/0.3777, allocations: 385.2 kB / 0.6336 GB, free: 6.707 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003352/0.3811, allocations: 2.29 MB / 0.6358 GB, free: 4.371 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.08e-05/0.3812, allocations: 70.22 kB / 0.6359 GB, free: 4.301 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001363/0.3813, allocations: 84 kB / 0.636 GB, free: 4.219 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00167/0.383, allocations: 1.013 MB / 0.6369 GB, free: 3.148 MB / 478.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.334e-05/0.3831, allocations: 7.938 kB / 0.637 GB, free: 3.141 MB / 478.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.914e-05/0.3831, allocations: 32 kB / 0.637 GB, free: 3.109 MB / 478.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.809e-05/0.3832, allocations: 20 kB / 0.637 GB, free: 3.09 MB / 478.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001676/0.3848, allocations: 0.7532 MB / 0.6377 GB, free: 2.332 MB / 478.1 MB 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 0.005937/0.3908, allocations: 5.264 MB / 0.6429 GB, free: 12.73 MB / 494.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001317/0.3921, allocations: 0.5661 MB / 0.6434 GB, free: 12.16 MB / 494.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006959/0.3928, allocations: 329.5 kB / 0.6437 GB, free: 11.84 MB / 494.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.00217/0.395, allocations: 1.634 MB / 0.6453 GB, free: 10.05 MB / 494.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0007218/0.3957, allocations: 330.9 kB / 0.6457 GB, free: 9.715 MB / 494.1 MB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0003379/0.3961, allocations: 59.36 kB / 0.6457 GB, free: 9.656 MB / 494.1 MB Notification: Performance of pre-optimization done (n=42): time 2.435e-06/0.3961, allocations: 0 / 0.6457 GB, free: 9.656 MB / 494.1 MB Notification: Performance of matching and sorting (n=42): time 0.003455/0.3996, allocations: 1.246 MB / 0.6469 GB, free: 8.379 MB / 494.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.565e-05/0.3996, allocations: 63.41 kB / 0.647 GB, free: 8.305 MB / 494.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002529/0.4022, allocations: 1.853 MB / 0.6488 GB, free: 6.406 MB / 494.1 MB Notification: Performance of collectPreVariables (initialization): time 7.244e-05/0.4023, allocations: 41.7 kB / 0.6488 GB, free: 6.359 MB / 494.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0007399/0.403, allocations: 0.7792 MB / 0.6496 GB, free: 5.57 MB / 494.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001466/0.4032, allocations: 157.9 kB / 0.6498 GB, free: 5.414 MB / 494.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000368/0.4035, allocations: 266.3 kB / 0.65 GB, free: 5.145 MB / 494.1 MB Notification: Performance of setup shared object (initialization): time 0.0001125/0.4037, allocations: 349.9 kB / 0.6503 GB, free: 4.797 MB / 494.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008912/0.4046, allocations: 464.9 kB / 0.6508 GB, free: 4.344 MB / 494.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001146/0.4057, allocations: 0.8354 MB / 0.6516 GB, free: 3.348 MB / 494.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001804/0.4075, allocations: 1.173 MB / 0.6527 GB, free: 2.051 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.168e-06/0.4075, allocations: 3.938 kB / 0.6528 GB, free: 2.047 MB / 494.1 MB Notification: Performance of matching and sorting (n=150) (initialization): time 0.003014/0.4106, allocations: 1.592 MB / 0.6543 GB, free: 452 kB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 4.133e-05/0.4106, allocations: 38.3 kB / 0.6543 GB, free: 408 kB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.571e-05/0.4106, allocations: 8 kB / 0.6544 GB, free: 400 kB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006529/0.4113, allocations: 192 kB / 0.6545 GB, free: 208 kB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007175/0.412, allocations: 199.6 kB / 0.6547 GB, free: 8 kB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007131/0.4128, allocations: 0.7688 MB / 0.6555 GB, free: 15.21 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001044/0.4138, allocations: 68.45 kB / 0.6555 GB, free: 15.15 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.735e-05/0.4139, allocations: 47.98 kB / 0.6556 GB, free: 15.1 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00131/0.4152, allocations: 0.8652 MB / 0.6564 GB, free: 14.23 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009706/0.4162, allocations: 0.8145 MB / 0.6572 GB, free: 13.26 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00154/0.4178, allocations: 1.128 MB / 0.6583 GB, free: 12 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.882e-06/0.4178, allocations: 4 kB / 0.6583 GB, free: 12 MB / 0.4981 GB Notification: Performance of matching and sorting (n=150) (initialization_lambda0): time 0.002592/0.4204, allocations: 1.6 MB / 0.6599 GB, free: 10.37 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 3.397e-05/0.4204, allocations: 33.7 kB / 0.6599 GB, free: 10.33 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.128e-05/0.4205, allocations: 8 kB / 0.6599 GB, free: 10.32 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002145/0.4207, allocations: 104.8 kB / 0.66 GB, free: 10.21 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006681/0.4214, allocations: 196.1 kB / 0.6602 GB, free: 10.02 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0021/0.4235, allocations: 2.367 MB / 0.6625 GB, free: 7.504 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001032/0.4245, allocations: 76.45 kB / 0.6626 GB, free: 7.43 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.931e-05/0.4246, allocations: 44.11 kB / 0.6626 GB, free: 7.387 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 38 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,nRes.y,from_dp.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (105): * Single equations (assignments): 101 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(5,7)} Notification: Performance of prepare postOptimizeDAE: time 0.0002448/0.4249, allocations: 246.7 kB / 0.6629 GB, free: 7.141 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002684/0.4251, allocations: 173.8 kB / 0.663 GB, free: 6.969 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002014/0.4271, allocations: 0.9001 MB / 0.6639 GB, free: 6.059 MB / 0.4981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.171e-05/0.4272, allocations: 8 kB / 0.6639 GB, free: 6.051 MB / 0.4981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.743e-06/0.4272, allocations: 3.938 kB / 0.6639 GB, free: 6.047 MB / 0.4981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001505/0.4287, allocations: 0.8998 MB / 0.6648 GB, free: 5.074 MB / 0.4981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003332/0.432, allocations: 2.01 MB / 0.6668 GB, free: 2.988 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.908e-06/0.4321, allocations: 0 / 0.6668 GB, free: 2.988 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004569/0.4325, allocations: 83.86 kB / 0.6669 GB, free: 2.906 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002758/0.4328, allocations: 128.9 kB / 0.667 GB, free: 2.777 MB / 0.4981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.748e-05/0.4329, allocations: 15.98 kB / 0.667 GB, free: 2.762 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005694/0.4334, allocations: 0.7473 MB / 0.6677 GB, free: 1.988 MB / 0.4981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.673e-06/0.4334, allocations: 0 / 0.6677 GB, free: 1.988 MB / 0.4981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002378/0.4358, allocations: 1.237 MB / 0.6689 GB, free: 0.7188 MB / 0.4981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005128/0.4363, allocations: 314.9 kB / 0.6692 GB, free: 400 kB / 0.4981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002422/0.4366, allocations: 11.94 kB / 0.6692 GB, free: 388 kB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006935/0.4373, allocations: 44.02 kB / 0.6693 GB, free: 344 kB / 0.4981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001009/0.4374, allocations: 35.95 kB / 0.6693 GB, free: 308 kB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.156e-05/0.4375, allocations: 23.98 kB / 0.6693 GB, free: 284 kB / 0.4981 GB Notification: Performance of sorting global known variables: time 0.001779/0.4393, allocations: 1.254 MB / 0.6706 GB, free: 15 MB / 0.5137 GB Notification: Performance of sort global known variables: time 1.7e-07/0.4393, allocations: 3.938 kB / 0.6706 GB, free: 15 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.0021/0.4414, allocations: 0.819 MB / 0.6714 GB, free: 14.18 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 1 (pump_dp.vol.dynBal.U) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (37): * Single equations (assignments): 31 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(5,7)} Notification: Performance of Backend phase and start with SimCode phase: time 0.003637/0.445, allocations: 2.156 MB / 0.6735 GB, free: 12 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.003687/0.4487, allocations: 1.933 MB / 0.6754 GB, free: 10.03 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 3.767e-06/0.4487, allocations: 0 / 0.6754 GB, free: 10.03 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.0008057/0.4495, allocations: 337 kB / 0.6757 GB, free: 9.699 MB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003436/0.453, allocations: 0.7927 MB / 0.6765 GB, free: 8.949 MB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02005/0.4731, allocations: 13.51 MB / 0.6897 GB, free: 10.7 MB / 0.5294 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000993/0.4741, allocations: 1.448 MB / 0.6911 GB, free: 9.219 MB / 0.5294 GB Notification: Performance of simCode: alias equations: time 0.001649/0.4758, allocations: 430.8 kB / 0.6915 GB, free: 8.793 MB / 0.5294 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008744/0.4766, allocations: 0.6515 MB / 0.6921 GB, free: 8.141 MB / 0.5294 GB Notification: Performance of SimCode: time 1.042e-06/0.4767, allocations: 0 / 0.6921 GB, free: 8.141 MB / 0.5294 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07755/0.5542, allocations: 46.85 MB / 0.7379 GB, free: 9.797 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.6/12.15, allocations: 13.17 kB / 0.7379 GB, free: 9.789 MB / 0.5762 GB (rm -f IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2_res.csv --start-time 0 --stop-time 20 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.008 IBPSA_latest_IBPSA_Fluid_Examples_Performance_Example2.fmu > IBPSA_latest_IBPSA.Fluid.Examples.Performance.Example2.pipe 2>&1)