./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:04:37,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:04:37,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:04:37,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:04:37,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:04:37,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:04:37,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:04:37,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:04:37,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:04:37,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:04:37,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:04:37,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:04:37,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:04:37,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:04:37,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:04:37,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:04:37,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:04:37,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:04:37,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:04:37,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:04:37,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:04:37,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:04:37,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:04:37,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:04:37,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:04:37,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:04:37,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:04:37,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:04:37,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:04:37,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:04:37,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:04:37,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:04:37,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:04:37,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:04:37,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:04:37,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:04:37,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:04:37,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:04:37,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:04:37,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:04:37,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:04:37,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:04:37,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:04:37,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:04:37,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:04:37,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:04:37,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:04:37,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:04:37,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:04:37,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:04:37,920 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:04:37,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:04:37,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:04:37,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:04:37,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:04:37,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:04:37,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:04:37,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:04:37,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:04:37,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:04:37,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:04:37,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:04:37,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:04:37,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:04:37,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:04:37,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:04:37,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:37,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:04:37,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:04:37,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:04:37,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:04:37,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:04:37,924 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:04:37,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:04:37,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:04:37,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:04:37,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb [2021-12-15 11:04:38,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:04:38,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:04:38,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:04:38,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:04:38,154 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:04:38,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-12-15 11:04:38,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731ba5956/3ad094f788744a68be1685f341c65351/FLAGed516504c [2021-12-15 11:04:38,650 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:04:38,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-12-15 11:04:38,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731ba5956/3ad094f788744a68be1685f341c65351/FLAGed516504c [2021-12-15 11:04:38,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731ba5956/3ad094f788744a68be1685f341c65351 [2021-12-15 11:04:38,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:04:38,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:04:38,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:38,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:04:38,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:04:38,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388b456c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38, skipping insertion in model container [2021-12-15 11:04:38,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:04:38,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:04:39,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-15 11:04:39,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:39,073 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:04:39,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-15 11:04:39,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:39,186 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:04:39,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39 WrapperNode [2021-12-15 11:04:39,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:39,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:39,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:04:39,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:04:39,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,253 INFO L137 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 966 [2021-12-15 11:04:39,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:39,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:04:39,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:04:39,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:04:39,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:04:39,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:04:39,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:04:39,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:04:39,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (1/1) ... [2021-12-15 11:04:39,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:39,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:04:39,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:04:39,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:04:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-15 11:04:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-15 11:04:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-15 11:04:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-15 11:04:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-15 11:04:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-15 11:04:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-15 11:04:39,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-15 11:04:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-15 11:04:39,420 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-15 11:04:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-15 11:04:39,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-15 11:04:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-15 11:04:39,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-15 11:04:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-15 11:04:39,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-15 11:04:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-15 11:04:39,421 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-15 11:04:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-15 11:04:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-15 11:04:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-15 11:04:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-15 11:04:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:04:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-15 11:04:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-15 11:04:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-15 11:04:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-15 11:04:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-15 11:04:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-15 11:04:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-15 11:04:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-15 11:04:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-15 11:04:39,424 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-15 11:04:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-15 11:04:39,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-15 11:04:39,424 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-15 11:04:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-15 11:04:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-15 11:04:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-15 11:04:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-15 11:04:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-15 11:04:39,425 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-15 11:04:39,425 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-15 11:04:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-15 11:04:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-15 11:04:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-15 11:04:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-15 11:04:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:04:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-15 11:04:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-15 11:04:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:04:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:04:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-15 11:04:39,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-15 11:04:39,585 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:04:39,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:04:40,390 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:04:40,406 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:04:40,406 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:04:40,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:40 BoogieIcfgContainer [2021-12-15 11:04:40,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:04:40,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:04:40,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:04:40,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:04:40,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:04:38" (1/3) ... [2021-12-15 11:04:40,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7aeada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:40, skipping insertion in model container [2021-12-15 11:04:40,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:39" (2/3) ... [2021-12-15 11:04:40,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7aeada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:40, skipping insertion in model container [2021-12-15 11:04:40,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:40" (3/3) ... [2021-12-15 11:04:40,418 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2021-12-15 11:04:40,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:04:40,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:04:40,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:04:40,469 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:04:40,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:04:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 466 states have (on average 1.6802575107296138) internal successors, (783), 487 states have internal predecessors, (783), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2021-12-15 11:04:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-15 11:04:40,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:04:40,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:04:40,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:04:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:04:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1539098875, now seen corresponding path program 1 times [2021-12-15 11:04:40,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:04:40,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829889112] [2021-12-15 11:04:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:04:40,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:04:40,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:04:40,577 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:04:40,587 INFO L158 Benchmark]: Toolchain (without parser) took 1904.67ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 61.2MB in the beginning and 46.6MB in the end (delta: 14.5MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2021-12-15 11:04:40,588 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 50.2MB in the beginning and 50.1MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:04:40,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.48ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 61.0MB in the beginning and 79.4MB in the end (delta: -18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 11:04:40,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.85ms. Allocated memory is still 132.1MB. Free memory was 79.4MB in the beginning and 73.8MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:04:40,591 INFO L158 Benchmark]: Boogie Preprocessor took 80.24ms. Allocated memory is still 132.1MB. Free memory was 73.8MB in the beginning and 68.2MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 11:04:40,592 INFO L158 Benchmark]: RCFGBuilder took 1074.71ms. Allocated memory is still 132.1MB. Free memory was 68.2MB in the beginning and 61.5MB in the end (delta: 6.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2021-12-15 11:04:40,595 INFO L158 Benchmark]: TraceAbstraction took 172.23ms. Allocated memory is still 132.1MB. Free memory was 61.1MB in the beginning and 46.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 11:04:40,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 50.2MB in the beginning and 50.1MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.48ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 61.0MB in the beginning and 79.4MB in the end (delta: -18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.85ms. Allocated memory is still 132.1MB. Free memory was 79.4MB in the beginning and 73.8MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.24ms. Allocated memory is still 132.1MB. Free memory was 73.8MB in the beginning and 68.2MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1074.71ms. Allocated memory is still 132.1MB. Free memory was 68.2MB in the beginning and 61.5MB in the end (delta: 6.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * TraceAbstraction took 172.23ms. Allocated memory is still 132.1MB. Free memory was 61.1MB in the beginning and 46.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:04:40,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:04:42,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:04:42,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:04:42,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:04:42,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:04:42,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:04:42,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:04:42,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:04:42,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:04:42,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:04:42,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:04:42,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:04:42,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:04:42,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:04:42,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:04:42,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:04:42,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:04:42,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:04:42,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:04:42,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:04:42,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:04:42,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:04:42,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:04:42,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:04:42,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:04:42,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:04:42,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:04:42,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:04:42,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:04:42,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:04:42,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:04:42,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:04:42,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:04:42,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:04:42,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:04:42,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:04:42,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:04:42,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:04:42,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:04:42,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:04:42,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:04:42,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:04:42,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:04:42,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:04:42,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:04:42,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:04:42,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:04:42,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:04:42,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:04:42,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:04:42,326 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:04:42,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:04:42,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:04:42,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:04:42,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:04:42,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:04:42,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:04:42,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:04:42,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:04:42,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:04:42,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:04:42,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:42,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:04:42,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:04:42,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:04:42,330 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:04:42,330 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:04:42,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:04:42,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:04:42,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:04:42,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:04:42,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:04:42,331 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb [2021-12-15 11:04:42,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:04:42,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:04:42,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:04:42,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:04:42,630 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:04:42,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-12-15 11:04:42,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f238ecbd/7354fb8761c4457d8007554da727d1bb/FLAG0a7b0f7d7 [2021-12-15 11:04:43,136 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:04:43,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-12-15 11:04:43,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f238ecbd/7354fb8761c4457d8007554da727d1bb/FLAG0a7b0f7d7 [2021-12-15 11:04:43,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f238ecbd/7354fb8761c4457d8007554da727d1bb [2021-12-15 11:04:43,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:04:43,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:04:43,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:43,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:04:43,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:04:43,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:43" (1/1) ... [2021-12-15 11:04:43,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7209cee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:43, skipping insertion in model container [2021-12-15 11:04:43,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:43" (1/1) ... [2021-12-15 11:04:43,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:04:43,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:04:43,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-15 11:04:43,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:43,929 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 11:04:43,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:04:44,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-15 11:04:44,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:44,035 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:04:44,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-15 11:04:44,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:44,132 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:04:44,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44 WrapperNode [2021-12-15 11:04:44,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:44,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:44,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:04:44,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:04:44,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,213 INFO L137 Inliner]: procedures = 99, calls = 349, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 909 [2021-12-15 11:04:44,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:44,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:04:44,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:04:44,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:04:44,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:04:44,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:04:44,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:04:44,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:04:44,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (1/1) ... [2021-12-15 11:04:44,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:44,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:04:44,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:04:44,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:04:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-15 11:04:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-15 11:04:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-15 11:04:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-15 11:04:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-15 11:04:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-15 11:04:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-15 11:04:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-15 11:04:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-15 11:04:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-15 11:04:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-15 11:04:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-15 11:04:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-15 11:04:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-15 11:04:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-15 11:04:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-15 11:04:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-15 11:04:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-15 11:04:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-15 11:04:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-15 11:04:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-15 11:04:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-15 11:04:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:04:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:44,388 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-15 11:04:44,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-15 11:04:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-15 11:04:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-15 11:04:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-15 11:04:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-15 11:04:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-15 11:04:44,391 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-15 11:04:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-15 11:04:44,391 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-15 11:04:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-15 11:04:44,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-15 11:04:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-15 11:04:44,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-15 11:04:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:04:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-15 11:04:44,392 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-15 11:04:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-15 11:04:44,393 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-15 11:04:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-15 11:04:44,393 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-15 11:04:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-15 11:04:44,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-15 11:04:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-15 11:04:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-15 11:04:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-15 11:04:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-15 11:04:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:04:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:04:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-15 11:04:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-15 11:04:44,537 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:04:44,539 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:04:45,426 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:04:45,437 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:04:45,438 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:04:45,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:45 BoogieIcfgContainer [2021-12-15 11:04:45,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:04:45,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:04:45,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:04:45,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:04:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:04:43" (1/3) ... [2021-12-15 11:04:45,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765c3bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:45, skipping insertion in model container [2021-12-15 11:04:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:44" (2/3) ... [2021-12-15 11:04:45,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765c3bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:45, skipping insertion in model container [2021-12-15 11:04:45,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:45" (3/3) ... [2021-12-15 11:04:45,449 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2021-12-15 11:04:45,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:04:45,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:04:45,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:04:45,503 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:04:45,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:04:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 466 states have (on average 1.6802575107296138) internal successors, (783), 487 states have internal predecessors, (783), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2021-12-15 11:04:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-15 11:04:45,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:04:45,566 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:04:45,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:04:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:04:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1539098875, now seen corresponding path program 1 times [2021-12-15 11:04:45,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:04:45,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430976913] [2021-12-15 11:04:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:04:45,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:04:45,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:04:45,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:04:45,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:04:45,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:04:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:04:45,866 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:04:45,870 INFO L158 Benchmark]: Toolchain (without parser) took 2429.93ms. Allocated memory was 60.8MB in the beginning and 96.5MB in the end (delta: 35.7MB). Free memory was 36.7MB in the beginning and 59.5MB in the end (delta: -22.8MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2021-12-15 11:04:45,870 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 42.7MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:04:45,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.59ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 36.4MB in the beginning and 48.6MB in the end (delta: -12.2MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2021-12-15 11:04:45,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.90ms. Allocated memory is still 75.5MB. Free memory was 48.6MB in the beginning and 43.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 11:04:45,871 INFO L158 Benchmark]: Boogie Preprocessor took 89.29ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 38.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:04:45,872 INFO L158 Benchmark]: RCFGBuilder took 1137.06ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 38.1MB in the beginning and 51.3MB in the end (delta: -13.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-15 11:04:45,872 INFO L158 Benchmark]: TraceAbstraction took 423.90ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 59.5MB in the end (delta: -8.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-12-15 11:04:45,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 42.7MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.59ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 36.4MB in the beginning and 48.6MB in the end (delta: -12.2MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.90ms. Allocated memory is still 75.5MB. Free memory was 48.6MB in the beginning and 43.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.29ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 38.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1137.06ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 38.1MB in the beginning and 51.3MB in the end (delta: -13.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 423.90ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 59.5MB in the end (delta: -8.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:04:45,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable