./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_product17.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 4d912bb29f92146b3af89aaec6570a3971933bc9b9284807c8f8b532bfb963bf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:46:12,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:46:12,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:46:12,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:46:12,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:46:12,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:46:12,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:46:12,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:46:12,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:46:12,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:46:12,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:46:12,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:46:12,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:46:12,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:46:12,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:46:12,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:46:12,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:46:12,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:46:12,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:46:12,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:46:12,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:46:12,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:46:12,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:46:12,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:46:12,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:46:12,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:46:12,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:46:12,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:46:12,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:46:12,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:46:12,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:46:12,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:46:12,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:46:12,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:46:12,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:46:12,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:46:12,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:46:12,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:46:12,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:46:12,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:46:12,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:46:12,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:46:12,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:46:12,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:46:12,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:46:12,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:46:12,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:46:12,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:46:12,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:46:12,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:46:12,169 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:46:12,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:46:12,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:46:12,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:46:12,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:46:12,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:46:12,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:46:12,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:46:12,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:46:12,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:46:12,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:46:12,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:46:12,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:46:12,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:46:12,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:46:12,172 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:46:12,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:46:12,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:46:12,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d912bb29f92146b3af89aaec6570a3971933bc9b9284807c8f8b532bfb963bf [2021-12-28 00:46:12,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:46:12,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:46:12,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:46:12,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:46:12,483 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:46:12,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c [2021-12-28 00:46:12,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c684dbd4/e1c8750f5af14246a03ef72a0903201f/FLAGf191e6d37 [2021-12-28 00:46:12,997 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:46:12,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c [2021-12-28 00:46:13,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c684dbd4/e1c8750f5af14246a03ef72a0903201f/FLAGf191e6d37 [2021-12-28 00:46:13,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c684dbd4/e1c8750f5af14246a03ef72a0903201f [2021-12-28 00:46:13,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:46:13,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:46:13,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:46:13,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:46:13,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:46:13,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e2dc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13, skipping insertion in model container [2021-12-28 00:46:13,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:46:13,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:46:13,636 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_product17.cil.c[18815,18828] [2021-12-28 00:46:13,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:46:13,803 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:46:13,841 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_product17.cil.c[18815,18828] [2021-12-28 00:46:13,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:46:13,913 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:46:13,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13 WrapperNode [2021-12-28 00:46:13,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:46:13,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:46:13,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:46:13,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:46:13,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,988 INFO L137 Inliner]: procedures = 127, calls = 209, calls flagged for inlining = 52, calls inlined = 46, statements flattened = 888 [2021-12-28 00:46:13,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:46:13,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:46:13,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:46:13,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:46:13,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:13,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:14,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:14,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:14,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:14,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:46:14,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:46:14,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:46:14,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:46:14,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (1/1) ... [2021-12-28 00:46:14,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:46:14,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:14,063 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) [2021-12-28 00:46:14,082 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 [2021-12-28 00:46:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-28 00:46:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-28 00:46:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-28 00:46:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-28 00:46:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2021-12-28 00:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2021-12-28 00:46:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:46:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:46:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:46:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:46:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-28 00:46:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-28 00:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:46:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:46:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:46:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-28 00:46:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-28 00:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-28 00:46:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-28 00:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:46:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:46:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:46:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:46:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-28 00:46:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-28 00:46:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-28 00:46:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-28 00:46:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:46:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:46:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:46:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:46:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:46:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:46:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:46:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:46:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:46:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-28 00:46:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-28 00:46:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:46:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:46:14,251 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:46:14,252 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:46:14,741 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:46:14,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:46:14,752 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:46:14,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:46:14 BoogieIcfgContainer [2021-12-28 00:46:14,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:46:14,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:46:14,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:46:14,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:46:14,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:46:13" (1/3) ... [2021-12-28 00:46:14,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc76b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:46:14, skipping insertion in model container [2021-12-28 00:46:14,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:13" (2/3) ... [2021-12-28 00:46:14,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc76b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:46:14, skipping insertion in model container [2021-12-28 00:46:14,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:46:14" (3/3) ... [2021-12-28 00:46:14,760 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.c [2021-12-28 00:46:14,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:46:14,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:46:14,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:46:14,812 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 [2021-12-28 00:46:14,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:46:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 359 states, 283 states have (on average 1.5795053003533568) internal successors, (447), 286 states have internal predecessors, (447), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-28 00:46:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 00:46:14,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:14,862 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] [2021-12-28 00:46:14,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash 173643804, now seen corresponding path program 1 times [2021-12-28 00:46:14,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961393396] [2021-12-28 00:46:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:14,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:46:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:46:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:46:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:46:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:46:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:46:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:46:15,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961393396] [2021-12-28 00:46:15,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961393396] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:15,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127652793] [2021-12-28 00:46:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:15,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:15,362 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) [2021-12-28 00:46:15,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:46:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:15,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:46:15,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:46:15,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:15,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127652793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:15,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:15,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:46:15,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806632298] [2021-12-28 00:46:15,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:15,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:46:15,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:46:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:15,795 INFO L87 Difference]: Start difference. First operand has 359 states, 283 states have (on average 1.5795053003533568) internal successors, (447), 286 states have internal predecessors, (447), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2021-12-28 00:46:15,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:15,845 INFO L93 Difference]: Finished difference Result 530 states and 796 transitions. [2021-12-28 00:46:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:46:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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 117 [2021-12-28 00:46:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:15,856 INFO L225 Difference]: With dead ends: 530 [2021-12-28 00:46:15,857 INFO L226 Difference]: Without dead ends: 352 [2021-12-28 00:46:15,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:15,862 INFO L933 BasicCegarLoop]: 545 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, 545 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 [2021-12-28 00:46:15,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-28 00:46:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2021-12-28 00:46:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 277 states have (on average 1.5740072202166064) internal successors, (436), 279 states have internal predecessors, (436), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-28 00:46:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 537 transitions. [2021-12-28 00:46:15,916 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 537 transitions. Word has length 117 [2021-12-28 00:46:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:15,919 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 537 transitions. [2021-12-28 00:46:15,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2021-12-28 00:46:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 537 transitions. [2021-12-28 00:46:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 00:46:15,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:15,923 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] [2021-12-28 00:46:15,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 00:46:16,141 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 [2021-12-28 00:46:16,141 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1958669476, now seen corresponding path program 1 times [2021-12-28 00:46:16,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844998301] [2021-12-28 00:46:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:16,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:46:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:46:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:46:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:46:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:46:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:46:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:46:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:46:16,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:16,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844998301] [2021-12-28 00:46:16,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844998301] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:16,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889339957] [2021-12-28 00:46:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:16,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:16,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:16,367 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) [2021-12-28 00:46:16,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 00:46:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:16,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:46:16,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:46:16,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:16,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889339957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:16,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:16,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:46:16,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347299603] [2021-12-28 00:46:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:16,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:46:16,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:46:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:16,815 INFO L87 Difference]: Start difference. First operand 352 states and 537 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) [2021-12-28 00:46:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:16,848 INFO L93 Difference]: Finished difference Result 520 states and 774 transitions. [2021-12-28 00:46:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:46:16,849 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 [2021-12-28 00:46:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:16,852 INFO L225 Difference]: With dead ends: 520 [2021-12-28 00:46:16,852 INFO L226 Difference]: Without dead ends: 355 [2021-12-28 00:46:16,854 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 [2021-12-28 00:46:16,855 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 1 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1068 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 [2021-12-28 00:46:16,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1068 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-12-28 00:46:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2021-12-28 00:46:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 279 states have (on average 1.5698924731182795) internal successors, (438), 281 states have internal predecessors, (438), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-28 00:46:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 539 transitions. [2021-12-28 00:46:16,877 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 539 transitions. Word has length 118 [2021-12-28 00:46:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:16,877 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 539 transitions. [2021-12-28 00:46:16,878 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) [2021-12-28 00:46:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 539 transitions. [2021-12-28 00:46:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-28 00:46:16,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:16,880 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] [2021-12-28 00:46:16,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:17,108 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 [2021-12-28 00:46:17,109 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1821400887, now seen corresponding path program 1 times [2021-12-28 00:46:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:17,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086819928] [2021-12-28 00:46:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:17,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 00:46:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:46:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:46:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:46:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:46:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:46:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:46:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 00:46:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:46:17,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:17,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086819928] [2021-12-28 00:46:17,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086819928] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:17,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864803018] [2021-12-28 00:46:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:17,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:17,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:17,279 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) [2021-12-28 00:46:17,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 00:46:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:46:17,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 00:46:17,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:17,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864803018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:17,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:17,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:46:17,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147423637] [2021-12-28 00:46:17,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:17,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:46:17,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:46:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:17,669 INFO L87 Difference]: Start difference. First operand 354 states and 539 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-12-28 00:46:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:17,687 INFO L93 Difference]: Finished difference Result 751 states and 1162 transitions. [2021-12-28 00:46:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:46:17,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 143 [2021-12-28 00:46:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:17,690 INFO L225 Difference]: With dead ends: 751 [2021-12-28 00:46:17,690 INFO L226 Difference]: Without dead ends: 424 [2021-12-28 00:46:17,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:17,692 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 126 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1057 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 [2021-12-28 00:46:17,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1057 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-28 00:46:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 416. [2021-12-28 00:46:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 327 states have (on average 1.5871559633027523) internal successors, (519), 329 states have internal predecessors, (519), 65 states have call successors, (65), 23 states have call predecessors, (65), 23 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-28 00:46:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 648 transitions. [2021-12-28 00:46:17,709 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 648 transitions. Word has length 143 [2021-12-28 00:46:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 648 transitions. [2021-12-28 00:46:17,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-12-28 00:46:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 648 transitions. [2021-12-28 00:46:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 00:46:17,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:17,712 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, 1] [2021-12-28 00:46:17,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:17,932 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 [2021-12-28 00:46:17,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:17,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 885414691, now seen corresponding path program 1 times [2021-12-28 00:46:17,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:17,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768230833] [2021-12-28 00:46:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:17,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 00:46:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:46:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:46:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:46:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:46:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:46:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:46:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:18,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:18,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768230833] [2021-12-28 00:46:18,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768230833] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663649613] [2021-12-28 00:46:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:18,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:18,034 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) [2021-12-28 00:46:18,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 00:46:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:46:18,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:46:18,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:18,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663649613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:18,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:18,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:46:18,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119627221] [2021-12-28 00:46:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:18,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:46:18,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:46:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:46:18,418 INFO L87 Difference]: Start difference. First operand 416 states and 648 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 00:46:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:18,465 INFO L93 Difference]: Finished difference Result 823 states and 1286 transitions. [2021-12-28 00:46:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:46:18,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2021-12-28 00:46:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:18,468 INFO L225 Difference]: With dead ends: 823 [2021-12-28 00:46:18,468 INFO L226 Difference]: Without dead ends: 418 [2021-12-28 00:46:18,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:18,470 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 144 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1946 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 [2021-12-28 00:46:18,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-28 00:46:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-12-28 00:46:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 328 states have (on average 1.5853658536585367) internal successors, (520), 331 states have internal predecessors, (520), 65 states have call successors, (65), 23 states have call predecessors, (65), 24 states have return successors, (66), 63 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-28 00:46:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 651 transitions. [2021-12-28 00:46:18,486 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 651 transitions. Word has length 125 [2021-12-28 00:46:18,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:18,486 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 651 transitions. [2021-12-28 00:46:18,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 00:46:18,487 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 651 transitions. [2021-12-28 00:46:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 00:46:18,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:18,489 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] [2021-12-28 00:46:18,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:18,715 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 [2021-12-28 00:46:18,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1008493217, now seen corresponding path program 1 times [2021-12-28 00:46:18,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:18,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280774991] [2021-12-28 00:46:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:18,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:46:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:46:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 00:46:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:46:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:46:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:46:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:46:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:46:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:46:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:46:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 00:46:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 00:46:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:46:18,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280774991] [2021-12-28 00:46:18,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280774991] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961909906] [2021-12-28 00:46:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:18,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:18,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:18,888 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) [2021-12-28 00:46:18,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 00:46:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:46:19,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-28 00:46:19,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:19,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961909906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:19,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:19,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:46:19,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778167413] [2021-12-28 00:46:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:19,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:46:19,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:46:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:46:19,333 INFO L87 Difference]: Start difference. First operand 418 states and 651 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) [2021-12-28 00:46:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:19,380 INFO L93 Difference]: Finished difference Result 825 states and 1291 transitions. [2021-12-28 00:46:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:46:19,380 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 [2021-12-28 00:46:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:19,383 INFO L225 Difference]: With dead ends: 825 [2021-12-28 00:46:19,383 INFO L226 Difference]: Without dead ends: 420 [2021-12-28 00:46:19,384 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 [2021-12-28 00:46:19,385 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 143 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1935 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 [2021-12-28 00:46:19,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 1935 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-12-28 00:46:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-12-28 00:46:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 329 states have (on average 1.5835866261398177) internal successors, (521), 333 states have internal predecessors, (521), 65 states have call successors, (65), 23 states have call predecessors, (65), 25 states have return successors, (71), 63 states have call predecessors, (71), 64 states have call successors, (71) [2021-12-28 00:46:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 657 transitions. [2021-12-28 00:46:19,400 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 657 transitions. Word has length 145 [2021-12-28 00:46:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:19,400 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 657 transitions. [2021-12-28 00:46:19,400 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) [2021-12-28 00:46:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 657 transitions. [2021-12-28 00:46:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 00:46:19,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:19,403 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] [2021-12-28 00:46:19,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:19,621 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 [2021-12-28 00:46:19,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1861077220, now seen corresponding path program 1 times [2021-12-28 00:46:19,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:19,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600884307] [2021-12-28 00:46:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:19,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:46:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:46:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:46:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:46:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:46:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:46:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:46:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:46:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:46:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:46:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:19,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:19,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600884307] [2021-12-28 00:46:19,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600884307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:19,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:19,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:46:19,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574736192] [2021-12-28 00:46:19,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:19,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:46:19,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:46:19,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:19,727 INFO L87 Difference]: Start difference. First operand 420 states and 657 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 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) [2021-12-28 00:46:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:20,851 INFO L93 Difference]: Finished difference Result 906 states and 1435 transitions. [2021-12-28 00:46:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:46:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 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 127 [2021-12-28 00:46:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:20,855 INFO L225 Difference]: With dead ends: 906 [2021-12-28 00:46:20,856 INFO L226 Difference]: Without dead ends: 509 [2021-12-28 00:46:20,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:46:20,858 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1304 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:20,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 1510 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:46:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-12-28 00:46:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 420. [2021-12-28 00:46:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 329 states have (on average 1.5835866261398177) internal successors, (521), 333 states have internal predecessors, (521), 65 states have call successors, (65), 23 states have call predecessors, (65), 25 states have return successors, (70), 63 states have call predecessors, (70), 64 states have call successors, (70) [2021-12-28 00:46:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 656 transitions. [2021-12-28 00:46:20,889 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 656 transitions. Word has length 127 [2021-12-28 00:46:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:20,891 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 656 transitions. [2021-12-28 00:46:20,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 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) [2021-12-28 00:46:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 656 transitions. [2021-12-28 00:46:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 00:46:20,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:20,893 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] [2021-12-28 00:46:20,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:46:20,894 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -956787132, now seen corresponding path program 2 times [2021-12-28 00:46:20,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:20,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288041823] [2021-12-28 00:46:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:20,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:46:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:46:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:46:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:46:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:46:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:46:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:46:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:46:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:21,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:21,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288041823] [2021-12-28 00:46:21,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288041823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:21,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:21,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:46:21,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174123306] [2021-12-28 00:46:21,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:21,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:46:21,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:46:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:21,003 INFO L87 Difference]: Start difference. First operand 420 states and 656 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) [2021-12-28 00:46:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:22,137 INFO L93 Difference]: Finished difference Result 908 states and 1438 transitions. [2021-12-28 00:46:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:46:22,138 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 [2021-12-28 00:46:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:22,141 INFO L225 Difference]: With dead ends: 908 [2021-12-28 00:46:22,141 INFO L226 Difference]: Without dead ends: 511 [2021-12-28 00:46:22,142 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 [2021-12-28 00:46:22,143 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1304 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:22,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 1509 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:46:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-28 00:46:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 422. [2021-12-28 00:46:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 330 states have (on average 1.5818181818181818) internal successors, (522), 335 states have internal predecessors, (522), 65 states have call successors, (65), 23 states have call predecessors, (65), 26 states have return successors, (72), 63 states have call predecessors, (72), 64 states have call successors, (72) [2021-12-28 00:46:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 659 transitions. [2021-12-28 00:46:22,162 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 659 transitions. Word has length 128 [2021-12-28 00:46:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:22,162 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 659 transitions. [2021-12-28 00:46:22,162 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) [2021-12-28 00:46:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 659 transitions. [2021-12-28 00:46:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:46:22,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:22,164 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] [2021-12-28 00:46:22,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:46:22,165 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1785879645, now seen corresponding path program 1 times [2021-12-28 00:46:22,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:22,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714305910] [2021-12-28 00:46:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:22,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:46:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:46:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:46:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:46:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:46:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:22,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714305910] [2021-12-28 00:46:22,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714305910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:22,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:22,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:46:22,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365110260] [2021-12-28 00:46:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:22,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:46:22,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:46:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:22,278 INFO L87 Difference]: Start difference. First operand 422 states and 659 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-12-28 00:46:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:23,413 INFO L93 Difference]: Finished difference Result 908 states and 1437 transitions. [2021-12-28 00:46:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 00:46:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 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 129 [2021-12-28 00:46:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:23,416 INFO L225 Difference]: With dead ends: 908 [2021-12-28 00:46:23,416 INFO L226 Difference]: Without dead ends: 511 [2021-12-28 00:46:23,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-28 00:46:23,418 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1298 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:23,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 1513 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:46:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-28 00:46:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 422. [2021-12-28 00:46:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 330 states have (on average 1.5818181818181818) internal successors, (522), 335 states have internal predecessors, (522), 65 states have call successors, (65), 23 states have call predecessors, (65), 26 states have return successors, (72), 63 states have call predecessors, (72), 64 states have call successors, (72) [2021-12-28 00:46:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 659 transitions. [2021-12-28 00:46:23,435 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 659 transitions. Word has length 129 [2021-12-28 00:46:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:23,435 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 659 transitions. [2021-12-28 00:46:23,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-12-28 00:46:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 659 transitions. [2021-12-28 00:46:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:46:23,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:23,437 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] [2021-12-28 00:46:23,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:46:23,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash -902370655, now seen corresponding path program 1 times [2021-12-28 00:46:23,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:23,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081960170] [2021-12-28 00:46:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:23,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:46:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:46:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:46:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:46:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:46:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:46:23,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:23,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081960170] [2021-12-28 00:46:23,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081960170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:23,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:23,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:46:23,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212888760] [2021-12-28 00:46:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:23,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:46:23,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:46:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:46:23,595 INFO L87 Difference]: Start difference. First operand 422 states and 659 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 00:46:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:25,021 INFO L93 Difference]: Finished difference Result 906 states and 1432 transitions. [2021-12-28 00:46:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:46:25,022 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 129 [2021-12-28 00:46:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:25,024 INFO L225 Difference]: With dead ends: 906 [2021-12-28 00:46:25,024 INFO L226 Difference]: Without dead ends: 511 [2021-12-28 00:46:25,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:46:25,026 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1434 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 3770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:25,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1862 Invalid, 3770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:46:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-28 00:46:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 422. [2021-12-28 00:46:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 330 states have (on average 1.5818181818181818) internal successors, (522), 335 states have internal predecessors, (522), 65 states have call successors, (65), 23 states have call predecessors, (65), 26 states have return successors, (71), 63 states have call predecessors, (71), 64 states have call successors, (71) [2021-12-28 00:46:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 658 transitions. [2021-12-28 00:46:25,042 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 658 transitions. Word has length 129 [2021-12-28 00:46:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:25,043 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 658 transitions. [2021-12-28 00:46:25,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 00:46:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 658 transitions. [2021-12-28 00:46:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 00:46:25,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:25,045 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] [2021-12-28 00:46:25,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:46:25,045 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:25,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash -312765158, now seen corresponding path program 1 times [2021-12-28 00:46:25,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:25,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596976014] [2021-12-28 00:46:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:25,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:46:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:46:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:46:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:46:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:46:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:46:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:46:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 00:46:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 00:46:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:46:25,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:25,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596976014] [2021-12-28 00:46:25,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596976014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:25,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:25,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:46:25,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968769955] [2021-12-28 00:46:25,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:25,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:46:25,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:25,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:46:25,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:46:25,163 INFO L87 Difference]: Start difference. First operand 422 states and 658 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) [2021-12-28 00:46:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:26,830 INFO L93 Difference]: Finished difference Result 908 states and 1438 transitions. [2021-12-28 00:46:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:46:26,830 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 [2021-12-28 00:46:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:26,835 INFO L225 Difference]: With dead ends: 908 [2021-12-28 00:46:26,835 INFO L226 Difference]: Without dead ends: 513 [2021-12-28 00:46:26,836 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 [2021-12-28 00:46:26,836 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1423 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:26,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1865 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3334 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 00:46:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-28 00:46:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 424. [2021-12-28 00:46:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 331 states have (on average 1.5800604229607251) internal successors, (523), 337 states have internal predecessors, (523), 65 states have call successors, (65), 23 states have call predecessors, (65), 27 states have return successors, (76), 63 states have call predecessors, (76), 64 states have call successors, (76) [2021-12-28 00:46:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 664 transitions. [2021-12-28 00:46:26,854 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 664 transitions. Word has length 149 [2021-12-28 00:46:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:26,854 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 664 transitions. [2021-12-28 00:46:26,854 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) [2021-12-28 00:46:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 664 transitions. [2021-12-28 00:46:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-28 00:46:26,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:26,856 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, 1, 1] [2021-12-28 00:46:26,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 00:46:26,863 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2079988504, now seen corresponding path program 1 times [2021-12-28 00:46:26,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:26,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642784194] [2021-12-28 00:46:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:26,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:46:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:46:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:46:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:46:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:46:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:46:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:46:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 00:46:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 00:46:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:46:26,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642784194] [2021-12-28 00:46:26,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642784194] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869709430] [2021-12-28 00:46:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:26,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:26,984 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) [2021-12-28 00:46:27,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 00:46:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:46:27,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:46:27,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:46:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:46:27,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869709430] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:46:27,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:46:27,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-28 00:46:27,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411781349] [2021-12-28 00:46:27,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:46:27,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 00:46:27,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 00:46:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-28 00:46:27,600 INFO L87 Difference]: Start difference. First operand 424 states and 664 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 00:46:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:29,233 INFO L93 Difference]: Finished difference Result 1095 states and 1807 transitions. [2021-12-28 00:46:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 00:46:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 150 [2021-12-28 00:46:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:29,238 INFO L225 Difference]: With dead ends: 1095 [2021-12-28 00:46:29,238 INFO L226 Difference]: Without dead ends: 930 [2021-12-28 00:46:29,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:46:29,240 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1668 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:29,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1722 Valid, 2198 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 00:46:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-12-28 00:46:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 817. [2021-12-28 00:46:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 645 states have (on average 1.6372093023255814) internal successors, (1056), 651 states have internal predecessors, (1056), 144 states have call successors, (144), 23 states have call predecessors, (144), 27 states have return successors, (165), 142 states have call predecessors, (165), 143 states have call successors, (165) [2021-12-28 00:46:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1365 transitions. [2021-12-28 00:46:29,276 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1365 transitions. Word has length 150 [2021-12-28 00:46:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:29,277 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1365 transitions. [2021-12-28 00:46:29,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 00:46:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1365 transitions. [2021-12-28 00:46:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 00:46:29,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:29,281 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] [2021-12-28 00:46:29,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:29,502 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 [2021-12-28 00:46:29,502 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1059015357, now seen corresponding path program 1 times [2021-12-28 00:46:29,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:29,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33937482] [2021-12-28 00:46:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:29,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:46:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:46:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:46:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:46:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:46:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:46:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:46:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:29,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:29,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33937482] [2021-12-28 00:46:29,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33937482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:29,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:29,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:29,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369620523] [2021-12-28 00:46:29,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:29,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:29,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:29,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:29,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:29,653 INFO L87 Difference]: Start difference. First operand 817 states and 1365 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-12-28 00:46:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:30,662 INFO L93 Difference]: Finished difference Result 2053 states and 3512 transitions. [2021-12-28 00:46:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:30,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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 137 [2021-12-28 00:46:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:30,668 INFO L225 Difference]: With dead ends: 2053 [2021-12-28 00:46:30,668 INFO L226 Difference]: Without dead ends: 1304 [2021-12-28 00:46:30,671 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 [2021-12-28 00:46:30,672 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1296 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:30,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1374 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-12-28 00:46:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1207. [2021-12-28 00:46:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 956 states have (on average 1.6485355648535565) internal successors, (1576), 962 states have internal predecessors, (1576), 223 states have call successors, (223), 23 states have call predecessors, (223), 27 states have return successors, (254), 221 states have call predecessors, (254), 222 states have call successors, (254) [2021-12-28 00:46:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 2053 transitions. [2021-12-28 00:46:30,737 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 2053 transitions. Word has length 137 [2021-12-28 00:46:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:30,737 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 2053 transitions. [2021-12-28 00:46:30,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-12-28 00:46:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 2053 transitions. [2021-12-28 00:46:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 00:46:30,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:30,743 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] [2021-12-28 00:46:30,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:46:30,744 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:30,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1858608830, now seen corresponding path program 1 times [2021-12-28 00:46:30,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015632350] [2021-12-28 00:46:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:30,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:46:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:46:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:46:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:46:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:46:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:46:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:46:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:30,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:30,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015632350] [2021-12-28 00:46:30,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015632350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:30,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:30,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:30,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599602998] [2021-12-28 00:46:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:30,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:30,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:30,823 INFO L87 Difference]: Start difference. First operand 1207 states and 2053 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) [2021-12-28 00:46:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:31,723 INFO L93 Difference]: Finished difference Result 3002 states and 5186 transitions. [2021-12-28 00:46:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:31,724 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 [2021-12-28 00:46:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:31,732 INFO L225 Difference]: With dead ends: 3002 [2021-12-28 00:46:31,732 INFO L226 Difference]: Without dead ends: 1916 [2021-12-28 00:46:31,735 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 [2021-12-28 00:46:31,736 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1295 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:31,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 1336 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:46:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2021-12-28 00:46:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1819. [2021-12-28 00:46:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1449 states have (on average 1.6556245686680469) internal successors, (2399), 1455 states have internal predecessors, (2399), 342 states have call successors, (342), 23 states have call predecessors, (342), 27 states have return successors, (373), 340 states have call predecessors, (373), 341 states have call successors, (373) [2021-12-28 00:46:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 3114 transitions. [2021-12-28 00:46:31,811 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 3114 transitions. Word has length 138 [2021-12-28 00:46:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:31,811 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 3114 transitions. [2021-12-28 00:46:31,812 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) [2021-12-28 00:46:31,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 3114 transitions. [2021-12-28 00:46:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 00:46:31,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:31,819 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] [2021-12-28 00:46:31,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:46:31,819 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:31,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash 336584197, now seen corresponding path program 1 times [2021-12-28 00:46:31,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:31,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538210262] [2021-12-28 00:46:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:31,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:46:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:46:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:46:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:46:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:46:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:46:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:46:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 00:46:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:31,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:31,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538210262] [2021-12-28 00:46:31,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538210262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:31,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:31,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:31,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637715151] [2021-12-28 00:46:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:31,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:31,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:31,890 INFO L87 Difference]: Start difference. First operand 1819 states and 3114 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) [2021-12-28 00:46:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:32,753 INFO L93 Difference]: Finished difference Result 4427 states and 7720 transitions. [2021-12-28 00:46:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:32,753 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 [2021-12-28 00:46:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:32,768 INFO L225 Difference]: With dead ends: 4427 [2021-12-28 00:46:32,768 INFO L226 Difference]: Without dead ends: 2854 [2021-12-28 00:46:32,774 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 [2021-12-28 00:46:32,774 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1290 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:32,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 1330 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:46:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-12-28 00:46:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2757. [2021-12-28 00:46:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2225 states have (on average 1.6615730337078651) internal successors, (3697), 2231 states have internal predecessors, (3697), 504 states have call successors, (504), 23 states have call predecessors, (504), 27 states have return successors, (551), 502 states have call predecessors, (551), 503 states have call successors, (551) [2021-12-28 00:46:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4752 transitions. [2021-12-28 00:46:32,985 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4752 transitions. Word has length 139 [2021-12-28 00:46:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:32,985 INFO L470 AbstractCegarLoop]: Abstraction has 2757 states and 4752 transitions. [2021-12-28 00:46:32,985 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) [2021-12-28 00:46:32,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4752 transitions. [2021-12-28 00:46:33,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-28 00:46:33,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:33,012 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] [2021-12-28 00:46:33,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:46:33,012 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1007175229, now seen corresponding path program 1 times [2021-12-28 00:46:33,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:33,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305600962] [2021-12-28 00:46:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:33,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:46:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:46:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:46:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:46:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:46:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:46:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 00:46:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:33,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:33,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305600962] [2021-12-28 00:46:33,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305600962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:33,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:33,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:33,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776235500] [2021-12-28 00:46:33,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:33,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:33,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:33,135 INFO L87 Difference]: Start difference. First operand 2757 states and 4752 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) [2021-12-28 00:46:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:34,179 INFO L93 Difference]: Finished difference Result 6676 states and 11729 transitions. [2021-12-28 00:46:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:34,180 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 [2021-12-28 00:46:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:34,197 INFO L225 Difference]: With dead ends: 6676 [2021-12-28 00:46:34,197 INFO L226 Difference]: Without dead ends: 4369 [2021-12-28 00:46:34,205 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 [2021-12-28 00:46:34,205 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1290 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:34,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 1332 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:46:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-12-28 00:46:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 4272. [2021-12-28 00:46:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 3495 states have (on average 1.6658082975679542) internal successors, (5822), 3501 states have internal predecessors, (5822), 749 states have call successors, (749), 23 states have call predecessors, (749), 27 states have return successors, (822), 747 states have call predecessors, (822), 748 states have call successors, (822) [2021-12-28 00:46:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 7393 transitions. [2021-12-28 00:46:34,392 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 7393 transitions. Word has length 140 [2021-12-28 00:46:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:34,392 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 7393 transitions. [2021-12-28 00:46:34,392 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) [2021-12-28 00:46:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 7393 transitions. [2021-12-28 00:46:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 00:46:34,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:34,405 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] [2021-12-28 00:46:34,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:46:34,406 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash 674647009, now seen corresponding path program 1 times [2021-12-28 00:46:34,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:34,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566540754] [2021-12-28 00:46:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:34,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:46:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:46:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:46:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:46:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:46:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:46:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:46:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 00:46:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:34,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:34,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566540754] [2021-12-28 00:46:34,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566540754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:34,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:34,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:34,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687081421] [2021-12-28 00:46:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:34,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:34,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:34,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:34,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:34,534 INFO L87 Difference]: Start difference. First operand 4272 states and 7393 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-12-28 00:46:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:35,670 INFO L93 Difference]: Finished difference Result 10692 states and 18841 transitions. [2021-12-28 00:46:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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 141 [2021-12-28 00:46:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:35,706 INFO L225 Difference]: With dead ends: 10692 [2021-12-28 00:46:35,706 INFO L226 Difference]: Without dead ends: 7102 [2021-12-28 00:46:35,719 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 [2021-12-28 00:46:35,720 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1287 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:35,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1364 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7102 states. [2021-12-28 00:46:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7102 to 7005. [2021-12-28 00:46:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7005 states, 5735 states have (on average 1.6612031386224935) internal successors, (9527), 5741 states have internal predecessors, (9527), 1242 states have call successors, (1242), 23 states have call predecessors, (1242), 27 states have return successors, (1359), 1240 states have call predecessors, (1359), 1241 states have call successors, (1359) [2021-12-28 00:46:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 12128 transitions. [2021-12-28 00:46:36,049 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 12128 transitions. Word has length 141 [2021-12-28 00:46:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:36,049 INFO L470 AbstractCegarLoop]: Abstraction has 7005 states and 12128 transitions. [2021-12-28 00:46:36,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-12-28 00:46:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 12128 transitions. [2021-12-28 00:46:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 00:46:36,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:36,072 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] [2021-12-28 00:46:36,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:46:36,072 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1011393881, now seen corresponding path program 1 times [2021-12-28 00:46:36,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:36,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096107171] [2021-12-28 00:46:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:36,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:46:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:46:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:46:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:46:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:46:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:46:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:46:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:46:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 00:46:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 00:46:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-28 00:46:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 00:46:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:46:36,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:36,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096107171] [2021-12-28 00:46:36,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096107171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:36,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:36,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:36,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858062868] [2021-12-28 00:46:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:36,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:36,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:36,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:36,180 INFO L87 Difference]: Start difference. First operand 7005 states and 12128 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-28 00:46:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:37,422 INFO L93 Difference]: Finished difference Result 17832 states and 31413 transitions. [2021-12-28 00:46:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:37,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 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 161 [2021-12-28 00:46:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:37,457 INFO L225 Difference]: With dead ends: 17832 [2021-12-28 00:46:37,457 INFO L226 Difference]: Without dead ends: 11886 [2021-12-28 00:46:37,476 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 [2021-12-28 00:46:37,476 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1281 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:37,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 1337 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11886 states. [2021-12-28 00:46:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11886 to 11789. [2021-12-28 00:46:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11789 states, 9697 states have (on average 1.6608229349283283) internal successors, (16105), 9703 states have internal predecessors, (16105), 2064 states have call successors, (2064), 23 states have call predecessors, (2064), 27 states have return successors, (2259), 2062 states have call predecessors, (2259), 2063 states have call successors, (2259) [2021-12-28 00:46:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11789 states to 11789 states and 20428 transitions. [2021-12-28 00:46:37,960 INFO L78 Accepts]: Start accepts. Automaton has 11789 states and 20428 transitions. Word has length 161 [2021-12-28 00:46:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:37,960 INFO L470 AbstractCegarLoop]: Abstraction has 11789 states and 20428 transitions. [2021-12-28 00:46:37,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-28 00:46:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 11789 states and 20428 transitions. [2021-12-28 00:46:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-28 00:46:38,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:38,005 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] [2021-12-28 00:46:38,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:46:38,006 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:38,006 INFO L85 PathProgramCache]: Analyzing trace with hash -883116413, now seen corresponding path program 1 times [2021-12-28 00:46:38,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:38,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666257561] [2021-12-28 00:46:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:38,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:46:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:46:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:46:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:46:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:46:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 00:46:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:38,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:38,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666257561] [2021-12-28 00:46:38,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666257561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:38,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:38,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:38,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120906598] [2021-12-28 00:46:38,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:38,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:38,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:38,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:38,090 INFO L87 Difference]: Start difference. First operand 11789 states and 20428 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-12-28 00:46:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:39,834 INFO L93 Difference]: Finished difference Result 28265 states and 49538 transitions. [2021-12-28 00:46:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:39,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 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 143 [2021-12-28 00:46:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:39,976 INFO L225 Difference]: With dead ends: 28265 [2021-12-28 00:46:39,976 INFO L226 Difference]: Without dead ends: 18479 [2021-12-28 00:46:40,034 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 [2021-12-28 00:46:40,035 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1281 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:40,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 1315 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:46:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18479 states. [2021-12-28 00:46:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18479 to 18382. [2021-12-28 00:46:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18382 states, 15087 states have (on average 1.635248889772652) internal successors, (24671), 15093 states have internal predecessors, (24671), 3267 states have call successors, (3267), 23 states have call predecessors, (3267), 27 states have return successors, (3606), 3265 states have call predecessors, (3606), 3266 states have call successors, (3606) [2021-12-28 00:46:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18382 states to 18382 states and 31544 transitions. [2021-12-28 00:46:40,817 INFO L78 Accepts]: Start accepts. Automaton has 18382 states and 31544 transitions. Word has length 143 [2021-12-28 00:46:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:40,817 INFO L470 AbstractCegarLoop]: Abstraction has 18382 states and 31544 transitions. [2021-12-28 00:46:40,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-12-28 00:46:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 18382 states and 31544 transitions. [2021-12-28 00:46:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 00:46:40,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:40,847 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] [2021-12-28 00:46:40,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:46:40,847 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash 576036872, now seen corresponding path program 1 times [2021-12-28 00:46:40,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360391651] [2021-12-28 00:46:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:40,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:46:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:46:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:46:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:46:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:46:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:46:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 00:46:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:40,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:40,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360391651] [2021-12-28 00:46:40,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360391651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:40,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:40,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:40,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178120300] [2021-12-28 00:46:40,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:40,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:40,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:40,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:40,926 INFO L87 Difference]: Start difference. First operand 18382 states and 31544 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) [2021-12-28 00:46:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:42,928 INFO L93 Difference]: Finished difference Result 48687 states and 85042 transitions. [2021-12-28 00:46:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:42,928 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 [2021-12-28 00:46:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:43,030 INFO L225 Difference]: With dead ends: 48687 [2021-12-28 00:46:43,030 INFO L226 Difference]: Without dead ends: 32915 [2021-12-28 00:46:43,065 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 [2021-12-28 00:46:43,066 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1283 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:43,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 1333 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32915 states. [2021-12-28 00:46:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32915 to 32818. [2021-12-28 00:46:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32818 states, 27073 states have (on average 1.631810290695527) internal successors, (44178), 27079 states have internal predecessors, (44178), 5717 states have call successors, (5717), 23 states have call predecessors, (5717), 27 states have return successors, (6330), 5715 states have call predecessors, (6330), 5716 states have call successors, (6330) [2021-12-28 00:46:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32818 states to 32818 states and 56225 transitions. [2021-12-28 00:46:44,656 INFO L78 Accepts]: Start accepts. Automaton has 32818 states and 56225 transitions. Word has length 144 [2021-12-28 00:46:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:44,657 INFO L470 AbstractCegarLoop]: Abstraction has 32818 states and 56225 transitions. [2021-12-28 00:46:44,657 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) [2021-12-28 00:46:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 32818 states and 56225 transitions. [2021-12-28 00:46:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 00:46:44,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:44,743 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] [2021-12-28 00:46:44,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:46:44,744 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1169992131, now seen corresponding path program 1 times [2021-12-28 00:46:44,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:44,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770334296] [2021-12-28 00:46:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:44,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:46:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:46:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:46:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:46:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:46:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 00:46:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 00:46:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:44,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:44,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770334296] [2021-12-28 00:46:44,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770334296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:44,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:44,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:44,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023356828] [2021-12-28 00:46:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:44,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:44,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:44,886 INFO L87 Difference]: Start difference. First operand 32818 states and 56225 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-12-28 00:46:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:47,604 INFO L93 Difference]: Finished difference Result 89584 states and 155676 transitions. [2021-12-28 00:46:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:47,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 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 145 [2021-12-28 00:46:47,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:47,791 INFO L225 Difference]: With dead ends: 89584 [2021-12-28 00:46:47,791 INFO L226 Difference]: Without dead ends: 60252 [2021-12-28 00:46:47,855 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 [2021-12-28 00:46:47,855 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1278 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:47,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 1346 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60252 states. [2021-12-28 00:46:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60252 to 60155. [2021-12-28 00:46:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60155 states, 49897 states have (on average 1.627372387117462) internal successors, (81201), 49903 states have internal predecessors, (81201), 10230 states have call successors, (10230), 23 states have call predecessors, (10230), 27 states have return successors, (11375), 10228 states have call predecessors, (11375), 10229 states have call successors, (11375) [2021-12-28 00:46:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60155 states to 60155 states and 102806 transitions. [2021-12-28 00:46:50,736 INFO L78 Accepts]: Start accepts. Automaton has 60155 states and 102806 transitions. Word has length 145 [2021-12-28 00:46:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:50,736 INFO L470 AbstractCegarLoop]: Abstraction has 60155 states and 102806 transitions. [2021-12-28 00:46:50,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-12-28 00:46:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 60155 states and 102806 transitions. [2021-12-28 00:46:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-28 00:46:50,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:50,792 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, 1] [2021-12-28 00:46:50,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:46:50,793 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1711741926, now seen corresponding path program 1 times [2021-12-28 00:46:50,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678967942] [2021-12-28 00:46:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:50,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:46:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:46:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:46:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:46:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 00:46:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 00:46:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 00:46:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 00:46:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 00:46:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:46:50,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:50,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678967942] [2021-12-28 00:46:50,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678967942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:50,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:50,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:50,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253417251] [2021-12-28 00:46:50,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:50,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:50,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:50,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:50,890 INFO L87 Difference]: Start difference. First operand 60155 states and 102806 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-28 00:46:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:54,931 INFO L93 Difference]: Finished difference Result 112675 states and 196254 transitions. [2021-12-28 00:46:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:54,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 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 165 [2021-12-28 00:46:54,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:55,491 INFO L225 Difference]: With dead ends: 112675 [2021-12-28 00:46:55,491 INFO L226 Difference]: Without dead ends: 112510 [2021-12-28 00:46:55,541 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 [2021-12-28 00:46:55,542 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1274 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:55,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 1335 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:46:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112510 states. [2021-12-28 00:46:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112510 to 112413. [2021-12-28 00:47:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112413 states, 93787 states have (on average 1.6218452450766097) internal successors, (152108), 93793 states have internal predecessors, (152108), 18598 states have call successors, (18598), 23 states have call predecessors, (18598), 27 states have return successors, (20789), 18596 states have call predecessors, (20789), 18597 states have call successors, (20789) [2021-12-28 00:47:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112413 states to 112413 states and 191495 transitions. [2021-12-28 00:47:00,574 INFO L78 Accepts]: Start accepts. Automaton has 112413 states and 191495 transitions. Word has length 165 [2021-12-28 00:47:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:00,575 INFO L470 AbstractCegarLoop]: Abstraction has 112413 states and 191495 transitions. [2021-12-28 00:47:00,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-28 00:47:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 112413 states and 191495 transitions. [2021-12-28 00:47:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-28 00:47:00,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:00,641 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, 1, 1] [2021-12-28 00:47:00,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 00:47:00,641 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash 549232082, now seen corresponding path program 1 times [2021-12-28 00:47:00,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468237514] [2021-12-28 00:47:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:00,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:47:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:47:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:47:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:47:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:47:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:47:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:47:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:47:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:47:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 00:47:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-28 00:47:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 00:47:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 00:47:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 00:47:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:47:00,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:00,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468237514] [2021-12-28 00:47:00,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468237514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:00,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:47:00,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 00:47:00,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830595697] [2021-12-28 00:47:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:00,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 00:47:00,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 00:47:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:47:00,785 INFO L87 Difference]: Start difference. First operand 112413 states and 191495 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 00:47:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:09,104 INFO L93 Difference]: Finished difference Result 216501 states and 376653 transitions. [2021-12-28 00:47:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 00:47:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2021-12-28 00:47:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:10,337 INFO L225 Difference]: With dead ends: 216501 [2021-12-28 00:47:10,337 INFO L226 Difference]: Without dead ends: 216344 [2021-12-28 00:47:10,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=548, Unknown=0, NotChecked=0, Total=756 [2021-12-28 00:47:10,441 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 2653 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:47:10,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2670 Valid, 2067 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 00:47:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216344 states.