Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr PowerSystems_cpp_PowerSystems.Examples.AC3ph.Transmission.Tline.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 1.0.1-master/package.mo", uses=false) Using package PowerSystems with version 1.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 1.0.1-master/package.mo) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Running command: "" <> buildModelFMU(PowerSystems.Examples.AC3ph.Transmission.Tline,fileNamePrefix="PowerSystems_cpp_PowerSystems_Examples_AC3ph_Transmission_Tline",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(PowerSystems.Examples.AC3ph.Transmission.Tline,fileNamePrefix="PowerSystems_cpp_PowerSystems_Examples_AC3ph_Transmission_Tline",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001439/0.001438, allocations: 180.7 kB / 8.011 MB, free: 1.062 MB / 5.871 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.18/2.18, allocations: 205.3 MB / 213.7 MB, free: 1.664 MB / 170.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.001104/0.001103, allocations: 90.16 kB / 261.8 MB, free: 1.609 MB / 218.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 1.0.1-master/package.mo): time 0.2635/0.2635, allocations: 37.99 MB / 347.7 MB, free: 5.762 MB / 250.7 MB Notification: Performance of FrontEnd - loaded program: time 2.132e-05/2.136e-05, allocations: 4 kB / 409.9 MB, free: 35.04 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1089/0.1089, allocations: 56.32 MB / 466.3 MB, free: 10.74 MB / 314.7 MB Notification: Performance of FrontEnd - scodeFlatten: time 0.5266/0.6355, allocations: 106.9 MB / 0.5597 GB, free: 4.574 MB / 362.7 MB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003793/0.636, allocations: 91.94 kB / 0.5598 GB, free: 4.527 MB / 362.7 MB Notification: Performance of FrontEnd - DAE generated: time 0.1957/0.8317, allocations: 29.31 MB / 0.5884 GB, free: 11.7 MB / 394.7 MB Notification: Performance of FrontEnd: time 3.176e-06/0.8318, allocations: 0 / 0.5884 GB, free: 11.7 MB / 394.7 MB Notification: Performance of Transformations before backend: time 0.0001282/0.8319, allocations: 27.94 kB / 0.5884 GB, free: 11.68 MB / 394.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 305 * Number of variables: 305 Notification: Performance of Generate backend data structure: time 0.008462/0.8404, allocations: 1.517 MB / 0.5899 GB, free: 10.16 MB / 394.7 MB Notification: Performance of prepare preOptimizeDAE: time 6.742e-05/0.8405, allocations: 12.03 kB / 0.5899 GB, free: 10.14 MB / 394.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003918/0.8445, allocations: 227.1 kB / 0.5901 GB, free: 9.922 MB / 394.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0109/0.8554, allocations: 1.617 MB / 0.5917 GB, free: 8.578 MB / 394.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001874/0.8556, allocations: 38.75 kB / 0.5918 GB, free: 8.543 MB / 394.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008924/0.8566, allocations: 83.33 kB / 0.5918 GB, free: 8.465 MB / 394.7 MB Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.006546/0.8631, allocations: 1.325 MB / 0.5931 GB, free: 7.598 MB / 394.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.007287/0.8705, allocations: 1.498 MB / 0.5946 GB, free: 6.422 MB / 394.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 6.857e-05/0.8706, allocations: 3.938 kB / 0.5946 GB, free: 6.418 MB / 394.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002726/0.8709, allocations: 11.48 kB / 0.5946 GB, free: 6.41 MB / 394.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0005962/0.8715, allocations: 57.98 kB / 0.5947 GB, free: 6.352 MB / 394.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04678/0.9183, allocations: 7.8 MB / 0.6023 GB, free: 15.92 MB / 410.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.005285/0.9237, allocations: 1.475 MB / 0.6037 GB, free: 15.06 MB / 410.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.004279/0.928, allocations: 1.173 MB / 0.6049 GB, free: 14.14 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.000265/0.9283, allocations: 25.3 kB / 0.6049 GB, free: 14.12 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.006686/0.935, allocations: 1.722 MB / 0.6066 GB, free: 12.36 MB / 410.7 MB Notification: Performance of pre-optimization done (n=177): time 9.277e-06/0.9351, allocations: 0 / 0.6066 GB, free: 12.36 MB / 410.7 MB Notification: Performance of matching and sorting (n=178): time 0.05935/0.9945, allocations: 7.712 MB / 0.6141 GB, free: 4.559 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0003039/0.9948, allocations: 250.8 kB / 0.6143 GB, free: 4.262 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001799/0.9967, allocations: 0.5306 MB / 0.6149 GB, free: 3.727 MB / 410.7 MB Notification: Performance of collectPreVariables (initialization): time 0.000683/0.9974, allocations: 41.7 kB / 0.6149 GB, free: 3.68 MB / 410.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0008189/0.9982, allocations: 0.4953 MB / 0.6154 GB, free: 3.176 MB / 410.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.001601/0.9999, allocations: 0.563 MB / 0.6159 GB, free: 2.605 MB / 410.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003679/1, allocations: 4 kB / 0.6159 GB, free: 2.602 MB / 410.7 MB Notification: Performance of setup shared object (initialization): time 0.0003795/1.001, allocations: 386.8 kB / 0.6163 GB, free: 2.215 MB / 410.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005089/1.006, allocations: 1.218 MB / 0.6175 GB, free: 0.9961 MB / 410.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005741/1.012, allocations: 1.483 MB / 0.619 GB, free: 15.43 MB / 426.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.005826/1.017, allocations: 1.333 MB / 0.6203 GB, free: 14.1 MB / 426.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.097e-05/1.018, allocations: 0 / 0.6203 GB, free: 14.1 MB / 426.7 MB Notification: Performance of matching and sorting (n=251) (initialization): time 0.06942/1.087, allocations: 7.333 MB / 0.6274 GB, free: 6.746 MB / 426.7 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001556/1.087, allocations: 63.36 kB / 0.6275 GB, free: 6.672 MB / 426.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.05331/1.141, allocations: 6.004 MB / 0.6333 GB, free: 0.6602 MB / 426.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.07309/1.214, allocations: 7.263 MB / 0.6404 GB, free: 9.383 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00194/1.216, allocations: 163.6 kB / 0.6406 GB, free: 9.223 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.09864/1.314, allocations: 22.56 MB / 0.6626 GB, free: 2.52 MB / 458.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003599/1.318, allocations: 127.8 kB / 0.6627 GB, free: 2.395 MB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007813/1.319, allocations: 207.8 kB / 0.6629 GB, free: 2.191 MB / 458.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * Number of states: 0 () * Number of discrete variables: 91 (system.initime,$whenCondition2,$PRE.relay2.cnt,relay2.cnt,$whenCondition1,$PRE.relay1.cnt,relay1.cnt,$whenCondition26,$whenCondition25,$whenCondition24,$whenCondition23,$whenCondition22,$whenCondition21,$whenCondition20,$whenCondition19,$whenCondition18,$whenCondition17,$whenCondition16,$whenCondition15,$whenCondition14,$whenCondition13,$whenCondition12,$whenCondition11,$whenCondition10,$whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$PRE.breaker1.breaker_a.arc,breaker1.breaker_a.arc,$PRE.breaker1.breaker_a.open,breaker1.breaker_a.open,breaker1.breaker_a.closed,$PRE.breaker1.breaker_a.t0,breaker1.breaker_a.t0,breaker1.breaker_a.opening,$PRE.breaker1.breaker_b.arc,breaker1.breaker_b.arc,$PRE.breaker1.breaker_b.open,breaker1.breaker_b.open,breaker1.breaker_b.closed,$PRE.breaker1.breaker_b.t0,breaker1.breaker_b.t0,breaker1.breaker_b.opening,$PRE.breaker1.breaker_c.arc,breaker1.breaker_c.arc,$PRE.breaker1.breaker_c.open,breaker1.breaker_c.open,breaker1.breaker_c.closed,$PRE.breaker1.breaker_c.t0,breaker1.breaker_c.t0,breaker1.breaker_c.opening,$PRE.breaker2.breaker_a.arc,breaker2.breaker_a.arc,$PRE.breaker2.breaker_a.open,breaker2.breaker_a.open,breaker2.breaker_a.closed,$PRE.breaker2.breaker_a.t0,breaker2.breaker_a.t0,breaker2.breaker_a.opening,$PRE.breaker2.breaker_b.arc,breaker2.breaker_b.arc,$PRE.breaker2.breaker_b.open,breaker2.breaker_b.open,breaker2.breaker_b.closed,$PRE.breaker2.breaker_b.t0,breaker2.breaker_b.t0,breaker2.breaker_b.opening,$PRE.breaker2.breaker_c.arc,breaker2.breaker_c.arc,$PRE.breaker2.breaker_c.open,breaker2.breaker_c.open,breaker2.breaker_c.closed,$PRE.breaker2.breaker_c.t0,breaker2.breaker_c.t0,breaker2.breaker_c.opening,$PRE.relay1.y[1],relay1.y[1],$PRE.relay1.y[2],relay1.y[2],$PRE.relay1.y[3],relay1.y[3],$PRE.relay2.y[1],relay2.y[1],$PRE.relay2.y[2],relay2.y[2],$PRE.relay2.y[3],relay2.y[3]) * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (158): * Single equations (assignments): 152 * Array equations: 3 * Algorithm blocks: 2 * Record equations: 0 * 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 {27 48} Notification: Performance of prepare postOptimizeDAE: time 0.001103/1.32, allocations: 252.9 kB / 0.6632 GB, free: 1.93 MB / 458.7 MB Notification: Performance of postOpt createAliasVarsForOutputStates (simulation): time 0.04534/1.365, allocations: 5.093 MB / 0.6682 GB, free: 12.79 MB / 474.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00114/1.367, allocations: 118.6 kB / 0.6683 GB, free: 12.68 MB / 474.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.04863/1.415, allocations: 5.324 MB / 0.6735 GB, free: 7.305 MB / 474.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0001414/1.415, allocations: 28 kB / 0.6735 GB, free: 7.277 MB / 474.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.579e-05/1.415, allocations: 0 / 0.6735 GB, free: 7.277 MB / 474.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.76e-05/1.416, allocations: 7.969 kB / 0.6735 GB, free: 7.27 MB / 474.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.05819/1.474, allocations: 7.713 MB / 0.681 GB, free: 15.47 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.166e-05/1.474, allocations: 3.984 kB / 0.681 GB, free: 15.46 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002343/1.476, allocations: 151.8 kB / 0.6812 GB, free: 15.32 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.07617/1.552, allocations: 8.049 MB / 0.689 GB, free: 7.227 MB / 490.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001257/1.554, allocations: 239.8 kB / 0.6893 GB, free: 6.992 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.3971/1.951, allocations: 20.91 MB / 0.7097 GB, free: 140.9 MB / 490.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.115e-06/1.951, allocations: 3.156 kB / 0.7097 GB, free: 140.9 MB / 490.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03223/1.983, allocations: 6.538 MB / 0.7161 GB, free: 140.5 MB / 490.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0004624/1.984, allocations: 186.2 kB / 0.7163 GB, free: 140.4 MB / 490.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001044/1.985, allocations: 200.4 kB / 0.7165 GB, free: 140.4 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00225/1.987, allocations: 127.5 kB / 0.7166 GB, free: 140.4 MB / 490.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001379/1.988, allocations: 261.3 kB / 0.7168 GB, free: 140.4 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000622/1.989, allocations: 201.5 kB / 0.717 GB, free: 140.4 MB / 490.7 MB Notification: Performance of sorting global known variables: time 0.0008547/1.99, allocations: 401.1 kB / 0.7174 GB, free: 140.3 MB / 490.7 MB Notification: Performance of sort global known variables: time 5.11e-07/1.99, allocations: 0 / 0.7174 GB, free: 140.3 MB / 490.7 MB Notification: Performance of remove unused functions: time 0.003911/1.994, allocations: 0.6426 MB / 0.718 GB, free: 140.3 MB / 490.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 21 (line.v[1,1],line.v[1,2],line.v[1,3],line.v[2,1],line.v[2,2],line.v[2,3],line.v[3,1],line.v[3,2],line.v[3,3],line.i[1,1],line.i[1,2],line.i[1,3],line.i[1,4],line.i[2,1],line.i[2,2],line.i[2,3],line.i[2,4],line.i[3,1],line.i[3,2],line.i[3,3],line.i[3,4]) * Number of discrete variables: 65 (breaker1.breaker_c.closed,breaker1.breaker_b.closed,breaker1.breaker_a.closed,breaker2.breaker_b.closed,breaker2.breaker_a.closed,breaker2.breaker_c.closed,$whenCondition26,$whenCondition25,$whenCondition24,$whenCondition23,$whenCondition22,$whenCondition21,$whenCondition20,$whenCondition19,$whenCondition18,$whenCondition17,$whenCondition16,$whenCondition15,$whenCondition14,$whenCondition13,$whenCondition12,$whenCondition11,$whenCondition10,$whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition1,$whenCondition2,breaker1.breaker_a.arc,breaker1.breaker_a.open,breaker1.breaker_a.t0,breaker1.breaker_a.opening,breaker1.breaker_b.arc,breaker1.breaker_b.open,breaker1.breaker_b.t0,breaker1.breaker_b.opening,breaker1.breaker_c.arc,breaker1.breaker_c.open,breaker1.breaker_c.t0,breaker1.breaker_c.opening,breaker2.breaker_a.arc,breaker2.breaker_a.open,breaker2.breaker_a.t0,breaker2.breaker_a.opening,breaker2.breaker_b.arc,breaker2.breaker_b.open,breaker2.breaker_b.t0,breaker2.breaker_b.opening,breaker2.breaker_c.arc,breaker2.breaker_c.open,breaker2.breaker_c.t0,breaker2.breaker_c.opening,relay1.y[1],relay1.y[2],relay1.y[3],relay1.cnt,relay2.y[1],relay2.y[2],relay2.y[3],relay2.cnt,system.initime) * Number of discrete states: 22 (breaker1.breaker_a.arc,breaker1.breaker_b.arc,breaker1.breaker_c.arc,breaker2.breaker_a.arc,breaker2.breaker_b.arc,breaker2.breaker_c.arc,relay2.y[3],relay2.y[2],relay2.y[1],relay2.cnt,$whenCondition2,relay1.y[3],relay1.y[2],relay1.y[1],relay1.cnt,$whenCondition1,breaker2.breaker_a.open,breaker2.breaker_c.open,breaker2.breaker_b.open,breaker1.breaker_b.open,breaker1.breaker_c.open,breaker1.breaker_a.open) * Top-level inputs: 0 Notification: Strong component statistics for simulation (132): * Single equations (assignments): 106 * Array equations: 3 * Algorithm blocks: 2 * Record equations: 0 * When equations: 13 * If-equations: 0 * Equation systems (linear and non-linear blocks): 2 * Torn equation systems: 6 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 2 {12,9} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 6 {(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.03092/2.025, allocations: 7.495 MB / 0.7253 GB, free: 139.1 MB / 490.7 MB Notification: Performance of simCode: created initialization part: time 0.01152/2.036, allocations: 3.942 MB / 0.7292 GB, free: 138.4 MB / 490.7 MB Notification: Performance of simCode: created event and clocks part: time 6.843e-06/2.036, allocations: 0 / 0.7292 GB, free: 138.4 MB / 490.7 MB Notification: Performance of simCode: created simulation system equations: time 0.00818/2.045, allocations: 3.037 MB / 0.7322 GB, free: 136.8 MB / 490.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001735/2.046, allocations: 161.8 kB / 0.7323 GB, free: 136.7 MB / 490.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01254/2.059, allocations: 4.916 MB / 0.7371 GB, free: 134.9 MB / 490.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001081/2.06, allocations: 1.315 MB / 0.7384 GB, free: 134.2 MB / 490.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00117/2.061, allocations: 484 kB / 0.7389 GB, free: 133.8 MB / 490.7 MB Notification: Performance of SimCode: time 1.293e-06/2.061, allocations: 0 / 0.7389 GB, free: 133.8 MB / 490.7 MB Notification: Performance of buildModelFMU: Generate C++ for platform static: time 4.402/6.463, allocations: 51.21 MB / 0.7889 GB, free: 94.44 MB / 490.7 MB (rm -f PowerSystems_cpp_PowerSystems.Examples.AC3ph.Transmission.Tline.pipe ; mkfifo PowerSystems_cpp_PowerSystems.Examples.AC3ph.Transmission.Tline.pipe ; head -c 1048576 < PowerSystems_cpp_PowerSystems.Examples.AC3ph.Transmission.Tline.pipe >> ../files/PowerSystems_cpp_PowerSystems.Examples.AC3ph.Transmission.Tline.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_PowerSystems_cpp_PowerSystems_Examples_AC3ph_Transmission_Tline_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 PowerSystems_cpp_PowerSystems_Examples_AC3ph_Transmission_Tline.fmu > PowerSystems_cpp_PowerSystems.Examples.AC3ph.Transmission.Tline.pipe 2>&1)