./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product24.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_product24.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 e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:04:32,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:04:32,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:04:32,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:04:32,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:04:32,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:04:32,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:04:32,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:04:32,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:04:32,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:04:32,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:04:32,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:04:32,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:04:32,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:04:32,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:04:32,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:04:32,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:04:32,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:04:32,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:04:32,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:04:32,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:04:32,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:04:32,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:04:32,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:04:32,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:04:32,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:04:32,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:04:32,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:04:32,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:04:32,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:04:32,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:04:32,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:04:32,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:04:32,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:04:32,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:04:32,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:04:32,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:04:32,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:04:32,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:04:32,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:04:32,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:04:32,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:04:32,145 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:04:32,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:04:32,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:04:32,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:04:32,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:04:32,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:04:32,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:04:32,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:04:32,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:04:32,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:04:32,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:04:32,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:04:32,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:04:32,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:04:32,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:04:32,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:04:32,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:04:32,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:04:32,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:32,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:04:32,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:04:32,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:04:32,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:04:32,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:04:32,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:04:32,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:04:32,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:04:32,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:04:32,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda [2021-12-15 11:04:32,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:04:32,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:04:32,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:04:32,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:04:32,368 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:04:32,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2021-12-15 11:04:32,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63dca4e5/d1d471426ebc4aecbdd3767966a47ae6/FLAG84ac0b333 [2021-12-15 11:04:32,858 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:04:32,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2021-12-15 11:04:32,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63dca4e5/d1d471426ebc4aecbdd3767966a47ae6/FLAG84ac0b333 [2021-12-15 11:04:32,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63dca4e5/d1d471426ebc4aecbdd3767966a47ae6 [2021-12-15 11:04:32,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:04:32,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:04:32,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:32,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:04:32,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:04:32,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:32" (1/1) ... [2021-12-15 11:04:32,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b9baea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:32, skipping insertion in model container [2021-12-15 11:04:32,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:32" (1/1) ... [2021-12-15 11:04:32,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:04:32,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:04:33,247 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_product24.cil.c[63703,63716] [2021-12-15 11:04:33,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:33,297 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:04:33,375 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_product24.cil.c[63703,63716] [2021-12-15 11:04:33,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:33,403 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:04:33,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33 WrapperNode [2021-12-15 11:04:33,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:33,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:33,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:04:33,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:04:33,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,484 INFO L137 Inliner]: procedures = 98, calls = 353, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 937 [2021-12-15 11:04:33,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:33,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:04:33,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:04:33,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:04:33,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:04:33,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:04:33,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:04:33,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:04:33,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (1/1) ... [2021-12-15 11:04:33,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:04:33,573 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 11:04:33,588 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 11:04:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-15 11:04:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-15 11:04:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-15 11:04:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-15 11:04:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-15 11:04:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-15 11:04:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-15 11:04:33,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-15 11:04:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-15 11:04:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-15 11:04:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-15 11:04:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-15 11:04:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-15 11:04:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-15 11:04:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-15 11:04:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-15 11:04:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-15 11:04:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-15 11:04:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-15 11:04:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-15 11:04:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:04:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-15 11:04:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-15 11:04:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-15 11:04:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-15 11:04:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-15 11:04:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-15 11:04:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-15 11:04:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-15 11:04:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-15 11:04:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-15 11:04:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-15 11:04:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-15 11:04:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-15 11:04:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-15 11:04:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-15 11:04:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-15 11:04:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-15 11:04:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-15 11:04:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-15 11:04:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-15 11:04:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-15 11:04:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-15 11:04:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-15 11:04:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-15 11:04:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:04:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-15 11:04:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-15 11:04:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-15 11:04:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-15 11:04:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:04:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:04:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-15 11:04:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-15 11:04:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-12-15 11:04:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-12-15 11:04:33,791 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:04:33,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:04:34,463 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:04:34,475 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:04:34,476 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:04:34,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:34 BoogieIcfgContainer [2021-12-15 11:04:34,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:04:34,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:04:34,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:04:34,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:04:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:04:32" (1/3) ... [2021-12-15 11:04:34,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c82ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:34, skipping insertion in model container [2021-12-15 11:04:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:33" (2/3) ... [2021-12-15 11:04:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c82ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:34, skipping insertion in model container [2021-12-15 11:04:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:34" (3/3) ... [2021-12-15 11:04:34,484 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2021-12-15 11:04:34,487 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:04:34,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:04:34,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:04:34,534 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 11:04:34,534 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:04:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 485 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-15 11:04:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-15 11:04:34,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:04:34,573 INFO L514 BasicCegarLoop]: trace histogram [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 11:04:34,574 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:04:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:04:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1390945328, now seen corresponding path program 1 times [2021-12-15 11:04:34,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:04:34,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60318994] [2021-12-15 11:04:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:04:34,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:04:34,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:04:34,627 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 11:04:34,631 INFO L158 Benchmark]: Toolchain (without parser) took 1740.83ms. Allocated memory is still 134.2MB. Free memory was 100.5MB in the beginning and 52.0MB in the end (delta: 48.5MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2021-12-15 11:04:34,632 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:04:34,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.77ms. Allocated memory is still 134.2MB. Free memory was 99.9MB in the beginning and 80.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 11:04:34,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.41ms. Allocated memory is still 134.2MB. Free memory was 80.5MB in the beginning and 74.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 11:04:34,634 INFO L158 Benchmark]: Boogie Preprocessor took 42.95ms. Allocated memory is still 134.2MB. Free memory was 74.8MB in the beginning and 69.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:04:34,635 INFO L158 Benchmark]: RCFGBuilder took 943.69ms. Allocated memory is still 134.2MB. Free memory was 69.6MB in the beginning and 65.4MB in the end (delta: 4.2MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-12-15 11:04:34,636 INFO L158 Benchmark]: TraceAbstraction took 150.32ms. Allocated memory is still 134.2MB. Free memory was 65.4MB in the beginning and 52.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:04:34,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.77ms. Allocated memory is still 134.2MB. Free memory was 99.9MB in the beginning and 80.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.41ms. Allocated memory is still 134.2MB. Free memory was 80.5MB in the beginning and 74.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.95ms. Allocated memory is still 134.2MB. Free memory was 74.8MB in the beginning and 69.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 943.69ms. Allocated memory is still 134.2MB. Free memory was 69.6MB in the beginning and 65.4MB in the end (delta: 4.2MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * TraceAbstraction took 150.32ms. Allocated memory is still 134.2MB. Free memory was 65.4MB in the beginning and 52.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. 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 11:04:34,671 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_product24.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 e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:04:36,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:04:36,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:04:36,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:04:36,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:04:36,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:04:36,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:04:36,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:04:36,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:04:36,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:04:36,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:04:36,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:04:36,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:04:36,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:04:36,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:04:36,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:04:36,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:04:36,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:04:36,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:04:36,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:04:36,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:04:36,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:04:36,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:04:36,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:04:36,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:04:36,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:04:36,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:04:36,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:04:36,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:04:36,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:04:36,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:04:36,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:04:36,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:04:36,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:04:36,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:04:36,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:04:36,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:04:36,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:04:36,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:04:36,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:04:36,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:04:36,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:04:36,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:04:36,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:04:36,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:04:36,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:04:36,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:04:36,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:04:36,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:04:36,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:04:36,421 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:04:36,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:04:36,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:04:36,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:04:36,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:04:36,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:04:36,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:04:36,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:04:36,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:04:36,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:04:36,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:04:36,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:04:36,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:04:36,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:04:36,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:04:36,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:04:36,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:04:36,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:04:36,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:36,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:04:36,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:04:36,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:04:36,426 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:04:36,426 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:04:36,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:04:36,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:04:36,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:04:36,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:04:36,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:04:36,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda [2021-12-15 11:04:36,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:04:36,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:04:36,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:04:36,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:04:36,707 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:04:36,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2021-12-15 11:04:36,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9001212/3281a2720614411e93a783f31e6c21a5/FLAG7a2b07652 [2021-12-15 11:04:37,178 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:04:37,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2021-12-15 11:04:37,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9001212/3281a2720614411e93a783f31e6c21a5/FLAG7a2b07652 [2021-12-15 11:04:37,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9001212/3281a2720614411e93a783f31e6c21a5 [2021-12-15 11:04:37,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:04:37,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:04:37,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:37,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:04:37,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:04:37,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:37" (1/1) ... [2021-12-15 11:04:37,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d3f238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:37, skipping insertion in model container [2021-12-15 11:04:37,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:37" (1/1) ... [2021-12-15 11:04:37,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:04:37,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:04:37,874 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_product24.cil.c[63703,63716] [2021-12-15 11:04:37,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:37,916 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 11:04:37,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:04:38,006 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_product24.cil.c[63703,63716] [2021-12-15 11:04:38,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:38,033 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:04:38,087 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_product24.cil.c[63703,63716] [2021-12-15 11:04:38,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:04:38,129 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:04:38,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38 WrapperNode [2021-12-15 11:04:38,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:04:38,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:38,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:04:38,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:04:38,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,206 INFO L137 Inliner]: procedures = 100, calls = 353, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 880 [2021-12-15 11:04:38,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:04:38,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:04:38,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:04:38,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:04:38,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:04:38,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:04:38,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:04:38,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:04:38,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (1/1) ... [2021-12-15 11:04:38,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:04:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:04:38,330 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 11:04:38,343 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 11:04:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-15 11:04:38,373 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-15 11:04:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-15 11:04:38,374 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-15 11:04:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-15 11:04:38,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-15 11:04:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-15 11:04:38,374 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-15 11:04:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-15 11:04:38,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-15 11:04:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-15 11:04:38,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-15 11:04:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-15 11:04:38,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-15 11:04:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-15 11:04:38,375 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-15 11:04:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-15 11:04:38,375 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-15 11:04:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-15 11:04:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-15 11:04:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:04:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-15 11:04:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-15 11:04:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-15 11:04:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-15 11:04:38,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-15 11:04:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-15 11:04:38,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-15 11:04:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-15 11:04:38,377 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-15 11:04:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-15 11:04:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-15 11:04:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-15 11:04:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-15 11:04:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-15 11:04:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-15 11:04:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:04:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-15 11:04:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-15 11:04:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-15 11:04:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-15 11:04:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-15 11:04:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-15 11:04:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-15 11:04:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-15 11:04:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-15 11:04:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-15 11:04:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-15 11:04:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-15 11:04:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-15 11:04:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-15 11:04:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:04:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:04:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-15 11:04:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-15 11:04:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-12-15 11:04:38,383 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-12-15 11:04:38,524 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:04:38,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:04:39,344 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:04:39,356 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:04:39,356 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:04:39,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:39 BoogieIcfgContainer [2021-12-15 11:04:39,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:04:39,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:04:39,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:04:39,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:04:39,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:04:37" (1/3) ... [2021-12-15 11:04:39,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d25e5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:39, skipping insertion in model container [2021-12-15 11:04:39,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:38" (2/3) ... [2021-12-15 11:04:39,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d25e5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:39, skipping insertion in model container [2021-12-15 11:04:39,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:39" (3/3) ... [2021-12-15 11:04:39,366 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2021-12-15 11:04:39,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:04:39,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:04:39,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:04:39,419 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 11:04:39,420 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:04:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 485 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-15 11:04:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-15 11:04:39,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:04:39,462 INFO L514 BasicCegarLoop]: trace histogram [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 11:04:39,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:04:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:04:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1390945328, now seen corresponding path program 1 times [2021-12-15 11:04:39,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:04:39,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861990564] [2021-12-15 11:04:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:04:39,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:04:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:04:39,481 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 11:04:39,515 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 11:04:39,553 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 11:04:39,750 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 11:04:39,751 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 11:04:39,754 INFO L158 Benchmark]: Toolchain (without parser) took 2264.00ms. Allocated memory was 50.3MB in the beginning and 79.7MB in the end (delta: 29.4MB). Free memory was 25.0MB in the beginning and 31.2MB in the end (delta: -6.2MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-12-15 11:04:39,755 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:04:39,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.55ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 24.9MB in the beginning and 33.8MB in the end (delta: -9.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-12-15 11:04:39,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.23ms. Allocated memory is still 65.0MB. Free memory was 33.8MB in the beginning and 28.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 11:04:39,756 INFO L158 Benchmark]: Boogie Preprocessor took 90.39ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 28.5MB in the beginning and 56.0MB in the end (delta: -27.5MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-12-15 11:04:39,756 INFO L158 Benchmark]: RCFGBuilder took 1052.39ms. Allocated memory is still 79.7MB. Free memory was 56.0MB in the beginning and 45.6MB in the end (delta: 10.4MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2021-12-15 11:04:39,757 INFO L158 Benchmark]: TraceAbstraction took 392.22ms. Allocated memory is still 79.7MB. Free memory was 45.0MB in the beginning and 31.2MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 11:04:39,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.55ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 24.9MB in the beginning and 33.8MB in the end (delta: -9.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.23ms. Allocated memory is still 65.0MB. Free memory was 33.8MB in the beginning and 28.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.39ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 28.5MB in the beginning and 56.0MB in the end (delta: -27.5MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1052.39ms. Allocated memory is still 79.7MB. Free memory was 56.0MB in the beginning and 45.6MB in the end (delta: 10.4MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * TraceAbstraction took 392.22ms. Allocated memory is still 79.7MB. Free memory was 45.0MB in the beginning and 31.2MB in the end (delta: 13.8MB). 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 11:04:39,788 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