./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/email_spec27_product25.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 c862f9fbd969695db1625134466cee856e407b57f937740cfce5c982a0b9c02a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:05:07,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:05:07,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:05:07,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:05:07,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:05:07,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:05:07,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:05:07,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:05:07,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:05:07,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:05:07,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:05:07,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:05:07,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:05:07,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:05:07,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:05:07,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:05:07,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:05:07,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:05:07,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:05:07,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:05:07,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:05:07,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:05:07,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:05:07,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:05:07,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:05:07,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:05:07,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:05:07,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:05:07,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:05:07,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:05:07,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:05:07,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:05:07,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:05:07,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:05:07,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:05:07,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:05:07,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:05:07,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:05:07,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:05:07,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:05:07,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:05:07,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:05:07,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:05:07,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:05:07,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:05:07,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:05:07,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:05:07,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:05:07,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:05:07,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:05:07,392 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:05:07,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:05:07,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:05:07,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:05:07,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:05:07,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:05:07,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:05:07,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:05:07,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:05:07,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:05:07,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:05:07,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:05:07,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:05:07,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:05:07,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:05:07,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:05:07,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:05:07,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:05:07,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:05:07,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:05:07,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:05:07,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:05:07,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:05:07,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:05:07,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:05:07,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:05:07,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c862f9fbd969695db1625134466cee856e407b57f937740cfce5c982a0b9c02a [2021-12-21 13:05:07,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:05:07,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:05:07,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:05:07,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:05:07,609 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:05:07,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product25.cil.c [2021-12-21 13:05:07,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14f9fe6d/91daf4d903044600998eca2fb038baf6/FLAG05ae59d2a [2021-12-21 13:05:08,098 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:05:08,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product25.cil.c [2021-12-21 13:05:08,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14f9fe6d/91daf4d903044600998eca2fb038baf6/FLAG05ae59d2a [2021-12-21 13:05:08,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14f9fe6d/91daf4d903044600998eca2fb038baf6 [2021-12-21 13:05:08,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:05:08,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:05:08,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:05:08,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:05:08,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:05:08,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:05:08" (1/1) ... [2021-12-21 13:05:08,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607e629c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:08, skipping insertion in model container [2021-12-21 13:05:08,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:05:08" (1/1) ... [2021-12-21 13:05:08,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:05:08,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:05:08,971 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/email_spec27_product25.cil.c[58911,58924] [2021-12-21 13:05:08,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:05:09,007 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:05:09,111 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/email_spec27_product25.cil.c[58911,58924] [2021-12-21 13:05:09,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:05:09,148 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:05:09,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09 WrapperNode [2021-12-21 13:05:09,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:05:09,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:05:09,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:05:09,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:05:09,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,231 INFO L137 Inliner]: procedures = 130, calls = 219, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1027 [2021-12-21 13:05:09,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:05:09,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:05:09,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:05:09,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:05:09,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:05:09,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:05:09,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:05:09,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:05:09,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (1/1) ... [2021-12-21 13:05:09,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:05:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:09,312 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) [2021-12-21 13:05:09,317 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 [2021-12-21 13:05:09,337 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-21 13:05:09,337 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-21 13:05:09,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-21 13:05:09,338 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-21 13:05:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2021-12-21 13:05:09,338 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2021-12-21 13:05:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:05:09,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:05:09,339 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:05:09,340 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:05:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-21 13:05:09,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-21 13:05:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:05:09,340 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:05:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-21 13:05:09,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-21 13:05:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:05:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:05:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:05:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:05:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:05:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:05:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:05:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:05:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-21 13:05:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-21 13:05:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-21 13:05:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-21 13:05:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:05:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:05:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:05:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:05:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:05:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:05:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-21 13:05:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-21 13:05:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-21 13:05:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-21 13:05:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:05:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:05:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:05:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:05:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-21 13:05:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-21 13:05:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:05:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:05:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:05:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-21 13:05:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-21 13:05:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:05:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:05:09,498 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:05:09,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:05:10,118 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:05:10,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:05:10,134 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:05:10,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:05:10 BoogieIcfgContainer [2021-12-21 13:05:10,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:05:10,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:05:10,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:05:10,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:05:10,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:05:08" (1/3) ... [2021-12-21 13:05:10,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182835df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:05:10, skipping insertion in model container [2021-12-21 13:05:10,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:05:09" (2/3) ... [2021-12-21 13:05:10,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182835df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:05:10, skipping insertion in model container [2021-12-21 13:05:10,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:05:10" (3/3) ... [2021-12-21 13:05:10,145 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product25.cil.c [2021-12-21 13:05:10,149 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:05:10,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:05:10,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:05:10,202 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 [2021-12-21 13:05:10,203 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:05:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 392 states, 309 states have (on average 1.5598705501618122) internal successors, (482), 312 states have internal predecessors, (482), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-21 13:05:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-21 13:05:10,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:10,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:05:10,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash 596273931, now seen corresponding path program 1 times [2021-12-21 13:05:10,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:10,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11207200] [2021-12-21 13:05:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:10,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:05:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:05:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:05:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:05:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:05:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:05:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:05:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:05:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:05:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:05:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:05:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:05:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:05:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:05:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:05:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:10,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:10,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11207200] [2021-12-21 13:05:10,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11207200] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:05:10,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472050606] [2021-12-21 13:05:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:10,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:10,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:05:10,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:05:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:05:11,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:05:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 13:05:11,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:05:11,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472050606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:11,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:05:11,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-21 13:05:11,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273469458] [2021-12-21 13:05:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:11,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:05:11,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:05:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:05:11,275 INFO L87 Difference]: Start difference. First operand has 392 states, 309 states have (on average 1.5598705501618122) internal successors, (482), 312 states have internal predecessors, (482), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:11,363 INFO L93 Difference]: Finished difference Result 591 states and 886 transitions. [2021-12-21 13:05:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:05:11,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2021-12-21 13:05:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:11,392 INFO L225 Difference]: With dead ends: 591 [2021-12-21 13:05:11,393 INFO L226 Difference]: Without dead ends: 385 [2021-12-21 13:05:11,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:05:11,405 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:11,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:05:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-21 13:05:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2021-12-21 13:05:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 303 states have (on average 1.5544554455445545) internal successors, (471), 305 states have internal predecessors, (471), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-21 13:05:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 586 transitions. [2021-12-21 13:05:11,514 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 586 transitions. Word has length 136 [2021-12-21 13:05:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:11,516 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 586 transitions. [2021-12-21 13:05:11,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 586 transitions. [2021-12-21 13:05:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 13:05:11,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:11,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:05:11,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 13:05:11,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 13:05:11,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:11,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:11,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1738293804, now seen corresponding path program 1 times [2021-12-21 13:05:11,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:11,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526217898] [2021-12-21 13:05:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:11,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:05:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:05:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:05:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:05:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 13:05:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:05:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:05:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:05:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:05:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:05:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:05:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:05:11,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:11,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526217898] [2021-12-21 13:05:11,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526217898] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:05:11,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480229390] [2021-12-21 13:05:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:11,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:11,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:05:11,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:05:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:05:12,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:05:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:05:12,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:05:12,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480229390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:12,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:05:12,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:05:12,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111928937] [2021-12-21 13:05:12,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:12,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:05:12,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:05:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:12,489 INFO L87 Difference]: Start difference. First operand 385 states and 586 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:12,513 INFO L93 Difference]: Finished difference Result 581 states and 864 transitions. [2021-12-21 13:05:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:05:12,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2021-12-21 13:05:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:12,516 INFO L225 Difference]: With dead ends: 581 [2021-12-21 13:05:12,516 INFO L226 Difference]: Without dead ends: 388 [2021-12-21 13:05:12,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:12,518 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:12,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:05:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-21 13:05:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 387. [2021-12-21 13:05:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 305 states have (on average 1.5508196721311476) internal successors, (473), 307 states have internal predecessors, (473), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-21 13:05:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 588 transitions. [2021-12-21 13:05:12,535 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 588 transitions. Word has length 118 [2021-12-21 13:05:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:12,536 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 588 transitions. [2021-12-21 13:05:12,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 588 transitions. [2021-12-21 13:05:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 13:05:12,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:12,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:05:12,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 13:05:12,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-21 13:05:12,772 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1778661451, now seen corresponding path program 1 times [2021-12-21 13:05:12,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:12,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826008919] [2021-12-21 13:05:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:12,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:05:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:05:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:05:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 13:05:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:05:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:05:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:05:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:05:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:05:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:05:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:05:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:05:12,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826008919] [2021-12-21 13:05:12,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826008919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:05:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568496751] [2021-12-21 13:05:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:12,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:12,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:12,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:05:12,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:05:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:05:13,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:05:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:05:13,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:05:13,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568496751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:13,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:05:13,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:05:13,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441005857] [2021-12-21 13:05:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:13,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:05:13,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:05:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:13,298 INFO L87 Difference]: Start difference. First operand 387 states and 588 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:13,337 INFO L93 Difference]: Finished difference Result 822 states and 1268 transitions. [2021-12-21 13:05:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:05:13,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2021-12-21 13:05:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:13,341 INFO L225 Difference]: With dead ends: 822 [2021-12-21 13:05:13,341 INFO L226 Difference]: Without dead ends: 462 [2021-12-21 13:05:13,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:13,342 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 134 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:13,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1147 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:05:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-21 13:05:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 454. [2021-12-21 13:05:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 358 states have (on average 1.5698324022346368) internal successors, (562), 360 states have internal predecessors, (562), 72 states have call successors, (72), 23 states have call predecessors, (72), 23 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-21 13:05:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 705 transitions. [2021-12-21 13:05:13,364 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 705 transitions. Word has length 124 [2021-12-21 13:05:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:13,364 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 705 transitions. [2021-12-21 13:05:13,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 705 transitions. [2021-12-21 13:05:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 13:05:13,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:13,367 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:05:13,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:05:13,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:13,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2093375302, now seen corresponding path program 1 times [2021-12-21 13:05:13,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:13,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624434851] [2021-12-21 13:05:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:13,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:05:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:05:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:05:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:05:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:05:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:05:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:05:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:05:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:05:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:05:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:05:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:05:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:05:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 13:05:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:05:13,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:13,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624434851] [2021-12-21 13:05:13,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624434851] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:05:13,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842650381] [2021-12-21 13:05:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:13,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:13,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:13,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:05:13,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:05:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:13,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:05:13,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:05:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 13:05:14,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:05:14,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842650381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:14,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:05:14,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-21 13:05:14,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869196134] [2021-12-21 13:05:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:14,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:05:14,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:05:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:05:14,229 INFO L87 Difference]: Start difference. First operand 454 states and 705 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-21 13:05:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:14,314 INFO L93 Difference]: Finished difference Result 899 states and 1400 transitions. [2021-12-21 13:05:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:05:14,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2021-12-21 13:05:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:14,318 INFO L225 Difference]: With dead ends: 899 [2021-12-21 13:05:14,318 INFO L226 Difference]: Without dead ends: 456 [2021-12-21 13:05:14,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:14,322 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 152 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:14,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2134 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:05:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-12-21 13:05:14,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2021-12-21 13:05:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 359 states have (on average 1.5682451253481895) internal successors, (563), 362 states have internal predecessors, (563), 72 states have call successors, (72), 23 states have call predecessors, (72), 24 states have return successors, (73), 70 states have call predecessors, (73), 71 states have call successors, (73) [2021-12-21 13:05:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 708 transitions. [2021-12-21 13:05:14,345 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 708 transitions. Word has length 144 [2021-12-21 13:05:14,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:14,345 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 708 transitions. [2021-12-21 13:05:14,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-21 13:05:14,345 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 708 transitions. [2021-12-21 13:05:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-21 13:05:14,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:14,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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, 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] [2021-12-21 13:05:14,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 13:05:14,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:14,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1285036805, now seen corresponding path program 1 times [2021-12-21 13:05:14,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811657408] [2021-12-21 13:05:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:14,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:05:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:05:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 13:05:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:05:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:05:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:05:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:05:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:05:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:05:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:05:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:05:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:05:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 13:05:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 13:05:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:05:14,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:14,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811657408] [2021-12-21 13:05:14,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811657408] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:05:14,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649710000] [2021-12-21 13:05:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:14,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:14,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:14,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:05:14,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 13:05:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:14,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:05:14,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:05:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 13:05:15,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:05:15,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649710000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:15,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:05:15,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 13:05:15,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044554684] [2021-12-21 13:05:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:15,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:05:15,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:05:15,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:05:15,178 INFO L87 Difference]: Start difference. First operand 456 states and 708 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-21 13:05:15,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:15,252 INFO L93 Difference]: Finished difference Result 901 states and 1405 transitions. [2021-12-21 13:05:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:05:15,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2021-12-21 13:05:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:15,255 INFO L225 Difference]: With dead ends: 901 [2021-12-21 13:05:15,255 INFO L226 Difference]: Without dead ends: 458 [2021-12-21 13:05:15,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:05:15,257 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 151 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:15,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:05:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-12-21 13:05:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-12-21 13:05:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 360 states have (on average 1.5666666666666667) internal successors, (564), 364 states have internal predecessors, (564), 72 states have call successors, (72), 23 states have call predecessors, (72), 25 states have return successors, (78), 70 states have call predecessors, (78), 71 states have call successors, (78) [2021-12-21 13:05:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 714 transitions. [2021-12-21 13:05:15,274 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 714 transitions. Word has length 145 [2021-12-21 13:05:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:15,274 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 714 transitions. [2021-12-21 13:05:15,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-21 13:05:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 714 transitions. [2021-12-21 13:05:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 13:05:15,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:15,277 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 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] [2021-12-21 13:05:15,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 13:05:15,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:15,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1548137547, now seen corresponding path program 1 times [2021-12-21 13:05:15,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374376324] [2021-12-21 13:05:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:15,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:05:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:05:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:05:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:05:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:05:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:05:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:05:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:05:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:05:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:05:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:05:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 13:05:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 13:05:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:05:15,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:15,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374376324] [2021-12-21 13:05:15,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374376324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:15,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:15,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:05:15,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394446635] [2021-12-21 13:05:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:15,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:05:15,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:05:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:05:15,611 INFO L87 Difference]: Start difference. First operand 458 states and 714 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-21 13:05:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:17,206 INFO L93 Difference]: Finished difference Result 1062 states and 1672 transitions. [2021-12-21 13:05:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:05:17,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2021-12-21 13:05:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:17,210 INFO L225 Difference]: With dead ends: 1062 [2021-12-21 13:05:17,210 INFO L226 Difference]: Without dead ends: 627 [2021-12-21 13:05:17,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:05:17,212 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1433 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:17,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1949 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:05:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-12-21 13:05:17,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 458. [2021-12-21 13:05:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 360 states have (on average 1.5666666666666667) internal successors, (564), 364 states have internal predecessors, (564), 72 states have call successors, (72), 23 states have call predecessors, (72), 25 states have return successors, (77), 70 states have call predecessors, (77), 71 states have call successors, (77) [2021-12-21 13:05:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 713 transitions. [2021-12-21 13:05:17,236 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 713 transitions. Word has length 146 [2021-12-21 13:05:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:17,236 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 713 transitions. [2021-12-21 13:05:17,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-21 13:05:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 713 transitions. [2021-12-21 13:05:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 13:05:17,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:17,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:05:17,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:05:17,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:17,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1696291680, now seen corresponding path program 1 times [2021-12-21 13:05:17,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:17,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440739682] [2021-12-21 13:05:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:17,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:05:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:05:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:05:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:05:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:05:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:05:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:05:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:05:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:05:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:05:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:05:17,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:17,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440739682] [2021-12-21 13:05:17,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440739682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:17,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:17,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:05:17,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163343371] [2021-12-21 13:05:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:17,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:05:17,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:05:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:05:17,346 INFO L87 Difference]: Start difference. First operand 458 states and 713 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 13:05:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:18,774 INFO L93 Difference]: Finished difference Result 1064 states and 1675 transitions. [2021-12-21 13:05:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:05:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2021-12-21 13:05:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:18,777 INFO L225 Difference]: With dead ends: 1064 [2021-12-21 13:05:18,778 INFO L226 Difference]: Without dead ends: 629 [2021-12-21 13:05:18,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:05:18,779 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 1424 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:18,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 1960 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:05:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-12-21 13:05:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 460. [2021-12-21 13:05:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 361 states have (on average 1.5650969529085872) internal successors, (565), 366 states have internal predecessors, (565), 72 states have call successors, (72), 23 states have call predecessors, (72), 26 states have return successors, (79), 70 states have call predecessors, (79), 71 states have call successors, (79) [2021-12-21 13:05:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 716 transitions. [2021-12-21 13:05:18,830 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 716 transitions. Word has length 128 [2021-12-21 13:05:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:18,830 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 716 transitions. [2021-12-21 13:05:18,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 13:05:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 716 transitions. [2021-12-21 13:05:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 13:05:18,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:18,832 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 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] [2021-12-21 13:05:18,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:05:18,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1698489008, now seen corresponding path program 1 times [2021-12-21 13:05:18,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:18,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345307050] [2021-12-21 13:05:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:18,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:05:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:05:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:05:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:05:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:05:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:05:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:05:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:05:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:05:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:05:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:05:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:05:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:05:18,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:18,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345307050] [2021-12-21 13:05:18,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345307050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:18,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:18,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:05:18,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056149047] [2021-12-21 13:05:18,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:18,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:05:18,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:05:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:05:18,982 INFO L87 Difference]: Start difference. First operand 460 states and 716 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-21 13:05:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:20,715 INFO L93 Difference]: Finished difference Result 1062 states and 1670 transitions. [2021-12-21 13:05:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:05:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 148 [2021-12-21 13:05:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:20,718 INFO L225 Difference]: With dead ends: 1062 [2021-12-21 13:05:20,718 INFO L226 Difference]: Without dead ends: 629 [2021-12-21 13:05:20,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:05:20,720 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1565 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 4394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:20,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 2541 Invalid, 4394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 13:05:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-12-21 13:05:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 460. [2021-12-21 13:05:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 361 states have (on average 1.5650969529085872) internal successors, (565), 366 states have internal predecessors, (565), 72 states have call successors, (72), 23 states have call predecessors, (72), 26 states have return successors, (78), 70 states have call predecessors, (78), 71 states have call successors, (78) [2021-12-21 13:05:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 715 transitions. [2021-12-21 13:05:20,742 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 715 transitions. Word has length 148 [2021-12-21 13:05:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:20,742 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 715 transitions. [2021-12-21 13:05:20,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-21 13:05:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 715 transitions. [2021-12-21 13:05:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 13:05:20,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:20,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 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] [2021-12-21 13:05:20,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:05:20,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:20,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1410393638, now seen corresponding path program 2 times [2021-12-21 13:05:20,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:20,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149354270] [2021-12-21 13:05:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:20,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:05:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:05:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:05:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:05:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:05:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:05:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:05:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:05:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:05:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:05:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:05:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 13:05:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:05:20,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:20,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149354270] [2021-12-21 13:05:20,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149354270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:20,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:20,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:05:20,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952106089] [2021-12-21 13:05:20,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:20,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:05:20,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:05:20,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:05:20,899 INFO L87 Difference]: Start difference. First operand 460 states and 715 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-21 13:05:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:22,918 INFO L93 Difference]: Finished difference Result 1064 states and 1676 transitions. [2021-12-21 13:05:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:05:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 149 [2021-12-21 13:05:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:22,921 INFO L225 Difference]: With dead ends: 1064 [2021-12-21 13:05:22,921 INFO L226 Difference]: Without dead ends: 631 [2021-12-21 13:05:22,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:05:22,923 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1561 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 3800 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 3800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:22,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 2535 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 3800 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 13:05:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-12-21 13:05:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 462. [2021-12-21 13:05:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 362 states have (on average 1.5635359116022098) internal successors, (566), 368 states have internal predecessors, (566), 72 states have call successors, (72), 23 states have call predecessors, (72), 27 states have return successors, (83), 70 states have call predecessors, (83), 71 states have call successors, (83) [2021-12-21 13:05:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 721 transitions. [2021-12-21 13:05:22,944 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 721 transitions. Word has length 149 [2021-12-21 13:05:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:22,944 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 721 transitions. [2021-12-21 13:05:22,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-21 13:05:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 721 transitions. [2021-12-21 13:05:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 13:05:22,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:22,946 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:22,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:05:22,947 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1081330841, now seen corresponding path program 1 times [2021-12-21 13:05:22,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:22,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312076886] [2021-12-21 13:05:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:22,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:22,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:05:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:05:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:05:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:05:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:05:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:05:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:05:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:05:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:05:23,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:23,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312076886] [2021-12-21 13:05:23,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312076886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:23,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:23,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:05:23,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101009520] [2021-12-21 13:05:23,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:23,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:05:23,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:05:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:05:23,032 INFO L87 Difference]: Start difference. First operand 462 states and 721 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 13:05:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:24,526 INFO L93 Difference]: Finished difference Result 1066 states and 1679 transitions. [2021-12-21 13:05:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 13:05:24,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2021-12-21 13:05:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:24,545 INFO L225 Difference]: With dead ends: 1066 [2021-12-21 13:05:24,545 INFO L226 Difference]: Without dead ends: 631 [2021-12-21 13:05:24,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-21 13:05:24,547 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 1427 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:24,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 1947 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:05:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-12-21 13:05:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 462. [2021-12-21 13:05:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 362 states have (on average 1.5635359116022098) internal successors, (566), 368 states have internal predecessors, (566), 72 states have call successors, (72), 23 states have call predecessors, (72), 27 states have return successors, (83), 70 states have call predecessors, (83), 71 states have call successors, (83) [2021-12-21 13:05:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 721 transitions. [2021-12-21 13:05:24,569 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 721 transitions. Word has length 131 [2021-12-21 13:05:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:24,569 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 721 transitions. [2021-12-21 13:05:24,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 13:05:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 721 transitions. [2021-12-21 13:05:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 13:05:24,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:24,571 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:24,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:05:24,571 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1667607063, now seen corresponding path program 1 times [2021-12-21 13:05:24,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:24,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784082305] [2021-12-21 13:05:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:24,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:05:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:05:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:05:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:05:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:05:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:05:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:05:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:05:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:24,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:24,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784082305] [2021-12-21 13:05:24,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784082305] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:05:24,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647200765] [2021-12-21 13:05:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:24,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:24,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:05:24,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:05:24,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 13:05:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:24,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:05:24,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:05:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:25,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:05:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:25,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647200765] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:05:25,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:05:25,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-21 13:05:25,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649554735] [2021-12-21 13:05:25,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:05:25,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:05:25,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:05:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:05:25,286 INFO L87 Difference]: Start difference. First operand 462 states and 721 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (36), 6 states have call predecessors, (36), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-21 13:05:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:26,934 INFO L93 Difference]: Finished difference Result 1266 states and 2068 transitions. [2021-12-21 13:05:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:05:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (36), 6 states have call predecessors, (36), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 131 [2021-12-21 13:05:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:26,939 INFO L225 Difference]: With dead ends: 1266 [2021-12-21 13:05:26,939 INFO L226 Difference]: Without dead ends: 1073 [2021-12-21 13:05:26,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:05:26,941 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1819 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:26,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 2473 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 13:05:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-12-21 13:05:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 880. [2021-12-21 13:05:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 701 states have (on average 1.6248216833095577) internal successors, (1139), 707 states have internal predecessors, (1139), 151 states have call successors, (151), 23 states have call predecessors, (151), 27 states have return successors, (172), 149 states have call predecessors, (172), 150 states have call successors, (172) [2021-12-21 13:05:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1462 transitions. [2021-12-21 13:05:26,977 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1462 transitions. Word has length 131 [2021-12-21 13:05:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:26,977 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1462 transitions. [2021-12-21 13:05:26,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (36), 6 states have call predecessors, (36), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-21 13:05:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1462 transitions. [2021-12-21 13:05:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 13:05:26,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:26,981 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 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] [2021-12-21 13:05:27,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 13:05:27,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:05:27,200 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1503956558, now seen corresponding path program 1 times [2021-12-21 13:05:27,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069763233] [2021-12-21 13:05:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:27,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:05:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:05:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:05:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:05:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:05:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:05:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:05:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:05:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:05:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:05:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 13:05:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 13:05:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:05:27,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:27,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069763233] [2021-12-21 13:05:27,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069763233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:27,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:27,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:27,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924942056] [2021-12-21 13:05:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:27,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:27,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:27,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:27,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:27,317 INFO L87 Difference]: Start difference. First operand 880 states and 1462 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:28,698 INFO L93 Difference]: Finished difference Result 2284 states and 3869 transitions. [2021-12-21 13:05:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:28,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2021-12-21 13:05:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:28,720 INFO L225 Difference]: With dead ends: 2284 [2021-12-21 13:05:28,720 INFO L226 Difference]: Without dead ends: 1472 [2021-12-21 13:05:28,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:28,725 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1421 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:28,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 1682 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:05:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-12-21 13:05:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1295. [2021-12-21 13:05:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1037 states have (on average 1.6383799421407907) internal successors, (1699), 1043 states have internal predecessors, (1699), 230 states have call successors, (230), 23 states have call predecessors, (230), 27 states have return successors, (261), 228 states have call predecessors, (261), 229 states have call successors, (261) [2021-12-21 13:05:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 2190 transitions. [2021-12-21 13:05:28,778 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 2190 transitions. Word has length 156 [2021-12-21 13:05:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:28,779 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 2190 transitions. [2021-12-21 13:05:28,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:28,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 2190 transitions. [2021-12-21 13:05:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-21 13:05:28,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:28,786 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:28,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:05:28,786 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -171115450, now seen corresponding path program 1 times [2021-12-21 13:05:28,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:28,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292089009] [2021-12-21 13:05:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:28,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:05:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:05:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:05:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:05:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:05:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:05:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:05:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:05:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:28,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:28,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292089009] [2021-12-21 13:05:28,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292089009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:28,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:28,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:28,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227425790] [2021-12-21 13:05:28,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:28,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:28,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:28,868 INFO L87 Difference]: Start difference. First operand 1295 states and 2190 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:30,113 INFO L93 Difference]: Finished difference Result 3298 states and 5647 transitions. [2021-12-21 13:05:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2021-12-21 13:05:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:30,122 INFO L225 Difference]: With dead ends: 3298 [2021-12-21 13:05:30,122 INFO L226 Difference]: Without dead ends: 2124 [2021-12-21 13:05:30,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:30,127 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1420 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:30,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1438 Valid, 1618 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:05:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-12-21 13:05:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1947. [2021-12-21 13:05:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1570 states have (on average 1.6471337579617835) internal successors, (2586), 1576 states have internal predecessors, (2586), 349 states have call successors, (349), 23 states have call predecessors, (349), 27 states have return successors, (380), 347 states have call predecessors, (380), 348 states have call successors, (380) [2021-12-21 13:05:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 3315 transitions. [2021-12-21 13:05:30,207 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 3315 transitions. Word has length 138 [2021-12-21 13:05:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:30,207 INFO L470 AbstractCegarLoop]: Abstraction has 1947 states and 3315 transitions. [2021-12-21 13:05:30,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 3315 transitions. [2021-12-21 13:05:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 13:05:30,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:30,218 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:30,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:05:30,219 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2070131414, now seen corresponding path program 1 times [2021-12-21 13:05:30,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:30,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646882972] [2021-12-21 13:05:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:30,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:05:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:05:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:05:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:05:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:05:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:05:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:05:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:05:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 13:05:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:30,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646882972] [2021-12-21 13:05:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646882972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:30,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:30,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:30,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305409199] [2021-12-21 13:05:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:30,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:30,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:30,338 INFO L87 Difference]: Start difference. First operand 1947 states and 3315 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:31,282 INFO L93 Difference]: Finished difference Result 4828 states and 8349 transitions. [2021-12-21 13:05:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2021-12-21 13:05:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:31,310 INFO L225 Difference]: With dead ends: 4828 [2021-12-21 13:05:31,323 INFO L226 Difference]: Without dead ends: 3127 [2021-12-21 13:05:31,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:31,328 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1417 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:31,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 1609 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:05:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-12-21 13:05:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2950. [2021-12-21 13:05:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2411 states have (on average 1.6540854417254252) internal successors, (3988), 2417 states have internal predecessors, (3988), 511 states have call successors, (511), 23 states have call predecessors, (511), 27 states have return successors, (558), 509 states have call predecessors, (558), 510 states have call successors, (558) [2021-12-21 13:05:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5057 transitions. [2021-12-21 13:05:31,549 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5057 transitions. Word has length 139 [2021-12-21 13:05:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:31,550 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 5057 transitions. [2021-12-21 13:05:31,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5057 transitions. [2021-12-21 13:05:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 13:05:31,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:31,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:31,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:05:31,592 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2140926361, now seen corresponding path program 1 times [2021-12-21 13:05:31,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:31,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426967264] [2021-12-21 13:05:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:31,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:05:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:05:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:05:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:05:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:05:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:05:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:05:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:05:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 13:05:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:31,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:31,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426967264] [2021-12-21 13:05:31,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426967264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:31,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:31,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:31,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594168847] [2021-12-21 13:05:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:31,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:31,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:31,697 INFO L87 Difference]: Start difference. First operand 2950 states and 5057 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:32,877 INFO L93 Difference]: Finished difference Result 7252 states and 12638 transitions. [2021-12-21 13:05:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:32,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2021-12-21 13:05:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:32,895 INFO L225 Difference]: With dead ends: 7252 [2021-12-21 13:05:32,896 INFO L226 Difference]: Without dead ends: 4752 [2021-12-21 13:05:32,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:32,901 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1413 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:32,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1614 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:05:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-12-21 13:05:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4575. [2021-12-21 13:05:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 3791 states have (on average 1.6589290424690055) internal successors, (6289), 3797 states have internal predecessors, (6289), 756 states have call successors, (756), 23 states have call predecessors, (756), 27 states have return successors, (829), 754 states have call predecessors, (829), 755 states have call successors, (829) [2021-12-21 13:05:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7874 transitions. [2021-12-21 13:05:33,077 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7874 transitions. Word has length 140 [2021-12-21 13:05:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:33,077 INFO L470 AbstractCegarLoop]: Abstraction has 4575 states and 7874 transitions. [2021-12-21 13:05:33,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7874 transitions. [2021-12-21 13:05:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 13:05:33,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:33,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 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] [2021-12-21 13:05:33,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:05:33,122 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:33,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1465925072, now seen corresponding path program 1 times [2021-12-21 13:05:33,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:33,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084545060] [2021-12-21 13:05:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:33,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:05:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:05:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:05:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:05:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:05:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:05:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:05:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:05:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 13:05:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 13:05:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 13:05:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 13:05:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:05:33,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:33,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084545060] [2021-12-21 13:05:33,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084545060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:33,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:33,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:33,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926214065] [2021-12-21 13:05:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:33,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:33,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:33,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:33,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:33,216 INFO L87 Difference]: Start difference. First operand 4575 states and 7874 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:34,357 INFO L93 Difference]: Finished difference Result 11298 states and 19798 transitions. [2021-12-21 13:05:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:34,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2021-12-21 13:05:34,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:34,390 INFO L225 Difference]: With dead ends: 11298 [2021-12-21 13:05:34,390 INFO L226 Difference]: Without dead ends: 7485 [2021-12-21 13:05:34,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:34,402 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1414 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 1672 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:05:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7485 states. [2021-12-21 13:05:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7485 to 7308. [2021-12-21 13:05:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 6031 states have (on average 1.6571049577184547) internal successors, (9994), 6037 states have internal predecessors, (9994), 1249 states have call successors, (1249), 23 states have call predecessors, (1249), 27 states have return successors, (1366), 1247 states have call predecessors, (1366), 1248 states have call successors, (1366) [2021-12-21 13:05:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 12609 transitions. [2021-12-21 13:05:34,717 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 12609 transitions. Word has length 160 [2021-12-21 13:05:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:34,718 INFO L470 AbstractCegarLoop]: Abstraction has 7308 states and 12609 transitions. [2021-12-21 13:05:34,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 12609 transitions. [2021-12-21 13:05:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 13:05:34,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:34,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:34,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:05:34,747 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:34,747 INFO L85 PathProgramCache]: Analyzing trace with hash 167082539, now seen corresponding path program 1 times [2021-12-21 13:05:34,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:34,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390135439] [2021-12-21 13:05:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:34,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:05:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:05:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:05:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:05:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:05:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:05:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:05:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:05:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:05:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:34,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:34,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390135439] [2021-12-21 13:05:34,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390135439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:34,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:34,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:34,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425357727] [2021-12-21 13:05:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:34,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:34,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:34,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:34,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:34,819 INFO L87 Difference]: Start difference. First operand 7308 states and 12609 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:36,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:36,202 INFO L93 Difference]: Finished difference Result 18633 states and 32682 transitions. [2021-12-21 13:05:36,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:36,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2021-12-21 13:05:36,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:36,237 INFO L225 Difference]: With dead ends: 18633 [2021-12-21 13:05:36,237 INFO L226 Difference]: Without dead ends: 12464 [2021-12-21 13:05:36,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:36,254 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1410 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:36,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 1611 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:05:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12464 states. [2021-12-21 13:05:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12464 to 12287. [2021-12-21 13:05:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12287 states, 10188 states have (on average 1.657243816254417) internal successors, (16884), 10194 states have internal predecessors, (16884), 2071 states have call successors, (2071), 23 states have call predecessors, (2071), 27 states have return successors, (2266), 2069 states have call predecessors, (2266), 2070 states have call successors, (2266) [2021-12-21 13:05:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12287 states to 12287 states and 21221 transitions. [2021-12-21 13:05:36,756 INFO L78 Accepts]: Start accepts. Automaton has 12287 states and 21221 transitions. Word has length 142 [2021-12-21 13:05:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:36,757 INFO L470 AbstractCegarLoop]: Abstraction has 12287 states and 21221 transitions. [2021-12-21 13:05:36,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12287 states and 21221 transitions. [2021-12-21 13:05:36,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 13:05:36,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:36,787 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 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] [2021-12-21 13:05:36,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:05:36,787 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash 740908290, now seen corresponding path program 1 times [2021-12-21 13:05:36,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411660713] [2021-12-21 13:05:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:05:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:05:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:05:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:05:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:05:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:05:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:05:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:05:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:05:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 13:05:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 13:05:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 13:05:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:05:36,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:36,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411660713] [2021-12-21 13:05:36,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411660713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:36,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:36,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:36,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001342046] [2021-12-21 13:05:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:36,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:36,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:36,926 INFO L87 Difference]: Start difference. First operand 12287 states and 21221 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:38,351 INFO L93 Difference]: Finished difference Result 29591 states and 51647 transitions. [2021-12-21 13:05:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2021-12-21 13:05:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:38,400 INFO L225 Difference]: With dead ends: 29591 [2021-12-21 13:05:38,401 INFO L226 Difference]: Without dead ends: 19417 [2021-12-21 13:05:38,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:38,420 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1410 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:38,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 1591 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:05:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19417 states. [2021-12-21 13:05:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19417 to 19240. [2021-12-21 13:05:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19240 states, 15938 states have (on average 1.632952691680261) internal successors, (26026), 15944 states have internal predecessors, (26026), 3274 states have call successors, (3274), 23 states have call predecessors, (3274), 27 states have return successors, (3613), 3272 states have call predecessors, (3613), 3273 states have call successors, (3613) [2021-12-21 13:05:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19240 states to 19240 states and 32913 transitions. [2021-12-21 13:05:39,331 INFO L78 Accepts]: Start accepts. Automaton has 19240 states and 32913 transitions. Word has length 162 [2021-12-21 13:05:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:39,331 INFO L470 AbstractCegarLoop]: Abstraction has 19240 states and 32913 transitions. [2021-12-21 13:05:39,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 19240 states and 32913 transitions. [2021-12-21 13:05:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 13:05:39,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:39,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:39,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:05:39,358 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1049714028, now seen corresponding path program 1 times [2021-12-21 13:05:39,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:39,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508974285] [2021-12-21 13:05:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:39,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:05:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:05:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:05:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:05:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:05:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:05:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:05:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:05:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 13:05:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:39,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:39,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508974285] [2021-12-21 13:05:39,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508974285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:39,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:39,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:39,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000613507] [2021-12-21 13:05:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:39,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:39,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:39,446 INFO L87 Difference]: Start difference. First operand 19240 states and 32913 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:41,809 INFO L93 Difference]: Finished difference Result 51023 states and 88767 transitions. [2021-12-21 13:05:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:41,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2021-12-21 13:05:41,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:41,893 INFO L225 Difference]: With dead ends: 51023 [2021-12-21 13:05:41,893 INFO L226 Difference]: Without dead ends: 34538 [2021-12-21 13:05:41,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:41,929 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 1406 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:41,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 1618 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:05:41,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34538 states. [2021-12-21 13:05:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34538 to 34361. [2021-12-21 13:05:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34361 states, 28609 states have (on average 1.6298717186899228) internal successors, (46629), 28615 states have internal predecessors, (46629), 5724 states have call successors, (5724), 23 states have call predecessors, (5724), 27 states have return successors, (6337), 5722 states have call predecessors, (6337), 5723 states have call successors, (6337) [2021-12-21 13:05:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34361 states to 34361 states and 58690 transitions. [2021-12-21 13:05:43,684 INFO L78 Accepts]: Start accepts. Automaton has 34361 states and 58690 transitions. Word has length 144 [2021-12-21 13:05:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:43,685 INFO L470 AbstractCegarLoop]: Abstraction has 34361 states and 58690 transitions. [2021-12-21 13:05:43,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 34361 states and 58690 transitions. [2021-12-21 13:05:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-21 13:05:43,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:43,725 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 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] [2021-12-21 13:05:43,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:05:43,726 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1454676440, now seen corresponding path program 1 times [2021-12-21 13:05:43,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:43,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863868141] [2021-12-21 13:05:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:43,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:05:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:05:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:05:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:05:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:05:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:05:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:05:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:05:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 13:05:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 13:05:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 13:05:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 13:05:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:05:43,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:43,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863868141] [2021-12-21 13:05:43,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863868141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:43,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:43,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:43,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899525885] [2021-12-21 13:05:43,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:43,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:43,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:43,845 INFO L87 Difference]: Start difference. First operand 34361 states and 58690 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:46,950 INFO L93 Difference]: Finished difference Result 93895 states and 162561 transitions. [2021-12-21 13:05:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-12-21 13:05:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:47,202 INFO L225 Difference]: With dead ends: 93895 [2021-12-21 13:05:47,203 INFO L226 Difference]: Without dead ends: 63205 [2021-12-21 13:05:47,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:47,286 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1404 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:47,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 1616 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:05:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63205 states. [2021-12-21 13:05:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63205 to 63028. [2021-12-21 13:05:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63028 states, 52763 states have (on average 1.6257604760912003) internal successors, (85780), 52769 states have internal predecessors, (85780), 10237 states have call successors, (10237), 23 states have call predecessors, (10237), 27 states have return successors, (11382), 10235 states have call predecessors, (11382), 10236 states have call successors, (11382) [2021-12-21 13:05:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63028 states to 63028 states and 107399 transitions. [2021-12-21 13:05:50,316 INFO L78 Accepts]: Start accepts. Automaton has 63028 states and 107399 transitions. Word has length 164 [2021-12-21 13:05:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:50,317 INFO L470 AbstractCegarLoop]: Abstraction has 63028 states and 107399 transitions. [2021-12-21 13:05:50,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 13:05:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 63028 states and 107399 transitions. [2021-12-21 13:05:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 13:05:50,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:50,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:05:50,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:05:50,379 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:50,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1629987212, now seen corresponding path program 1 times [2021-12-21 13:05:50,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:50,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820157296] [2021-12-21 13:05:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:50,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:05:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:05:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:05:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:05:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:05:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:05:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:05:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 13:05:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 13:05:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:50,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:50,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820157296] [2021-12-21 13:05:50,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820157296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:50,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:50,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:05:50,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418561386] [2021-12-21 13:05:50,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:50,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:05:50,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:05:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:05:50,477 INFO L87 Difference]: Start difference. First operand 63028 states and 107399 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:05:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:54,878 INFO L93 Difference]: Finished difference Result 118271 states and 205195 transitions. [2021-12-21 13:05:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:05:54,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2021-12-21 13:05:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:55,303 INFO L225 Difference]: With dead ends: 118271 [2021-12-21 13:05:55,304 INFO L226 Difference]: Without dead ends: 118078 [2021-12-21 13:05:55,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:05:55,352 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1405 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:55,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1605 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:05:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118078 states. [2021-12-21 13:06:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118078 to 117901. [2021-12-21 13:06:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117901 states, 99268 states have (on average 1.6205725913688198) internal successors, (160871), 99274 states have internal predecessors, (160871), 18605 states have call successors, (18605), 23 states have call predecessors, (18605), 27 states have return successors, (20796), 18603 states have call predecessors, (20796), 18604 states have call successors, (20796) [2021-12-21 13:06:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117901 states to 117901 states and 200272 transitions. [2021-12-21 13:06:00,810 INFO L78 Accepts]: Start accepts. Automaton has 117901 states and 200272 transitions. Word has length 146 [2021-12-21 13:06:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:06:00,810 INFO L470 AbstractCegarLoop]: Abstraction has 117901 states and 200272 transitions. [2021-12-21 13:06:00,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:06:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 117901 states and 200272 transitions. [2021-12-21 13:06:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 13:06:00,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:06:00,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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] [2021-12-21 13:06:00,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 13:06:00,877 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:06:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:06:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 320007001, now seen corresponding path program 1 times [2021-12-21 13:06:00,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:06:00,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114538315] [2021-12-21 13:06:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:06:00,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:06:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:06:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:06:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:06:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:06:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:06:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:06:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:06:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:06:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:06:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:06:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:06:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:06:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:06:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 13:06:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 13:06:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:06:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:06:00,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:06:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114538315] [2021-12-21 13:06:00,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114538315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:06:00,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:06:00,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:06:00,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573561421] [2021-12-21 13:06:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:06:00,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:06:00,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:06:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:06:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:06:00,998 INFO L87 Difference]: Start difference. First operand 117901 states and 200272 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 13:06:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:06:06,605 INFO L93 Difference]: Finished difference Result 118255 states and 204091 transitions. [2021-12-21 13:06:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:06:06,605 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2021-12-21 13:06:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:06:07,082 INFO L225 Difference]: With dead ends: 118255 [2021-12-21 13:06:07,082 INFO L226 Difference]: Without dead ends: 118070 [2021-12-21 13:06:07,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-12-21 13:06:07,126 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 1647 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 2932 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:06:07,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 2320 Invalid, 3555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2932 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 13:06:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118070 states.