./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_spec8_product35.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 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:42:11,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:42:11,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:42:11,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:42:11,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:42:11,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:42:11,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:42:11,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:42:11,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:42:11,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:42:11,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:42:11,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:42:11,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:42:11,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:42:11,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:42:11,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:42:11,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:42:11,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:42:11,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:42:11,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:42:11,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:42:11,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:42:11,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:42:11,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:42:11,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:42:11,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:42:11,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:42:11,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:42:11,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:42:11,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:42:11,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:42:11,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:42:11,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:42:11,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:42:11,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:42:11,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:42:11,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:42:11,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:42:11,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:42:11,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:42:11,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:42:11,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:42:11,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:42:11,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:42:11,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:42:11,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:42:11,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:42:11,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:42:11,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:42:11,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:42:11,120 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:42:11,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:42:11,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:42:11,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:42:11,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:42:11,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:42:11,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:42:11,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:42:11,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:42:11,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:42:11,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:42:11,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:42:11,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:42:11,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:42:11,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:42:11,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:42:11,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:42:11,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:42:11,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:42:11,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 [2021-12-14 14:42:11,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:42:11,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:42:11,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:42:11,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:42:11,323 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:42:11,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2021-12-14 14:42:11,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86cc04c6e/d099ede993514834a0a708eaec07ed0c/FLAGd9da0aca6 [2021-12-14 14:42:11,819 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:42:11,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2021-12-14 14:42:11,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86cc04c6e/d099ede993514834a0a708eaec07ed0c/FLAGd9da0aca6 [2021-12-14 14:42:12,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86cc04c6e/d099ede993514834a0a708eaec07ed0c [2021-12-14 14:42:12,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:42:12,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:42:12,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:42:12,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:42:12,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:42:12,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:12,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290bc177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12, skipping insertion in model container [2021-12-14 14:42:12,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:12,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:42:12,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:42:12,748 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_spec8_product35.cil.c[16425,16438] [2021-12-14 14:42:12,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:42:12,874 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:42:12,909 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_spec8_product35.cil.c[16425,16438] [2021-12-14 14:42:12,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:42:12,961 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:42:12,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12 WrapperNode [2021-12-14 14:42:12,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:42:12,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:42:12,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:42:12,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:42:12,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,050 INFO L137 Inliner]: procedures = 138, calls = 252, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1162 [2021-12-14 14:42:13,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:42:13,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:42:13,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:42:13,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:42:13,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:42:13,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:42:13,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:42:13,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:42:13,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (1/1) ... [2021-12-14 14:42:13,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:42:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:13,162 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) [2021-12-14 14:42:13,174 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 [2021-12-14 14:42:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-14 14:42:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-14 14:42:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-14 14:42:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-14 14:42:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-14 14:42:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-14 14:42:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-14 14:42:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-14 14:42:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-14 14:42:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-14 14:42:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-14 14:42:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-14 14:42:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-14 14:42:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-14 14:42:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-14 14:42:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-14 14:42:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-14 14:42:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-14 14:42:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-14 14:42:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:42:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-14 14:42:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-14 14:42:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-14 14:42:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-14 14:42:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-14 14:42:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-14 14:42:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-14 14:42:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-14 14:42:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-14 14:42:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:42:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-14 14:42:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-14 14:42:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-14 14:42:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-14 14:42:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:42:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:42:13,422 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:42:13,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:42:14,054 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:42:14,066 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:42:14,066 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:42:14,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:42:14 BoogieIcfgContainer [2021-12-14 14:42:14,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:42:14,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:42:14,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:42:14,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:42:14,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:42:12" (1/3) ... [2021-12-14 14:42:14,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270bf6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:42:14, skipping insertion in model container [2021-12-14 14:42:14,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:42:12" (2/3) ... [2021-12-14 14:42:14,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270bf6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:42:14, skipping insertion in model container [2021-12-14 14:42:14,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:42:14" (3/3) ... [2021-12-14 14:42:14,076 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2021-12-14 14:42:14,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:42:14,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:42:14,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:42:14,134 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 [2021-12-14 14:42:14,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:42:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 467 states, 361 states have (on average 1.5346260387811634) internal successors, (554), 366 states have internal predecessors, (554), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-14 14:42:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-14 14:42:14,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:14,195 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] [2021-12-14 14:42:14,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1305642597, now seen corresponding path program 1 times [2021-12-14 14:42:14,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:14,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966961475] [2021-12-14 14:42:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:14,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:42:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:42:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:42:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:42:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 14:42:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:42:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:42:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:42:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:42:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:42:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:42:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:42:14,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:14,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966961475] [2021-12-14 14:42:14,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966961475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:42:14,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277354673] [2021-12-14 14:42:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:14,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:14,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:14,688 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) [2021-12-14 14:42:14,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:42:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:42:15,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:42:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:42:15,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:42:15,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277354673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:15,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:42:15,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-14 14:42:15,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324414548] [2021-12-14 14:42:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:15,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:42:15,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:42:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:42:15,271 INFO L87 Difference]: Start difference. First operand has 467 states, 361 states have (on average 1.5346260387811634) internal successors, (554), 366 states have internal predecessors, (554), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:15,335 INFO L93 Difference]: Finished difference Result 736 states and 1090 transitions. [2021-12-14 14:42:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:42:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2021-12-14 14:42:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:15,349 INFO L225 Difference]: With dead ends: 736 [2021-12-14 14:42:15,349 INFO L226 Difference]: Without dead ends: 460 [2021-12-14 14:42:15,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:42:15,361 INFO L933 BasicCegarLoop]: 700 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, 700 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 [2021-12-14 14:42:15,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:42:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-12-14 14:42:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2021-12-14 14:42:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 355 states have (on average 1.5295774647887324) internal successors, (543), 359 states have internal predecessors, (543), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2021-12-14 14:42:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 692 transitions. [2021-12-14 14:42:15,437 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 692 transitions. Word has length 110 [2021-12-14 14:42:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:15,438 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 692 transitions. [2021-12-14 14:42:15,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 692 transitions. [2021-12-14 14:42:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 14:42:15,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:15,449 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] [2021-12-14 14:42:15,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:42:15,659 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 [2021-12-14 14:42:15,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1412794511, now seen corresponding path program 1 times [2021-12-14 14:42:15,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:15,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048968734] [2021-12-14 14:42:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:15,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:42:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:42:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:42:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 14:42:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 14:42:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:42:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:42:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:42:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:42:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:42:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:42:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:42:15,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:15,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048968734] [2021-12-14 14:42:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048968734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:42:15,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500526034] [2021-12-14 14:42:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:15,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:15,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:15,808 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) [2021-12-14 14:42:15,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:42:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 14:42:16,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:42:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:42:16,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:42:16,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500526034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:16,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:42:16,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:42:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917966739] [2021-12-14 14:42:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:42:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:42:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:42:16,215 INFO L87 Difference]: Start difference. First operand 460 states and 692 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:16,266 INFO L93 Difference]: Finished difference Result 726 states and 1068 transitions. [2021-12-14 14:42:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:42:16,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2021-12-14 14:42:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:16,273 INFO L225 Difference]: With dead ends: 726 [2021-12-14 14:42:16,273 INFO L226 Difference]: Without dead ends: 463 [2021-12-14 14:42:16,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:42:16,276 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1378 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 [2021-12-14 14:42:16,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1378 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:42:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-14 14:42:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 462. [2021-12-14 14:42:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 357 states have (on average 1.526610644257703) internal successors, (545), 361 states have internal predecessors, (545), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2021-12-14 14:42:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 694 transitions. [2021-12-14 14:42:16,314 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 694 transitions. Word has length 111 [2021-12-14 14:42:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:16,315 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 694 transitions. [2021-12-14 14:42:16,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 694 transitions. [2021-12-14 14:42:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-14 14:42:16,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:16,319 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] [2021-12-14 14:42:16,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:42:16,530 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 [2021-12-14 14:42:16,531 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 389162940, now seen corresponding path program 1 times [2021-12-14 14:42:16,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:16,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518604588] [2021-12-14 14:42:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:16,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:42:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:42:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:42:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 14:42:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:42:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:42:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:42:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:42:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:42:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:42:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:42:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:42:16,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:16,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518604588] [2021-12-14 14:42:16,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518604588] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:42:16,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889914450] [2021-12-14 14:42:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:16,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:16,673 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) [2021-12-14 14:42:16,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:42:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:16,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:42:16,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:42:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:42:17,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:42:17,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889914450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:17,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:42:17,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:42:17,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246036060] [2021-12-14 14:42:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:17,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:42:17,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:42:17,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:42:17,085 INFO L87 Difference]: Start difference. First operand 462 states and 694 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:17,118 INFO L93 Difference]: Finished difference Result 977 states and 1488 transitions. [2021-12-14 14:42:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:42:17,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-12-14 14:42:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:17,122 INFO L225 Difference]: With dead ends: 977 [2021-12-14 14:42:17,122 INFO L226 Difference]: Without dead ends: 542 [2021-12-14 14:42:17,124 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 [2021-12-14 14:42:17,126 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 142 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1366 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 [2021-12-14 14:42:17,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1366 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:42:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-12-14 14:42:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 534. [2021-12-14 14:42:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 415 states have (on average 1.546987951807229) internal successors, (642), 419 states have internal predecessors, (642), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2021-12-14 14:42:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 819 transitions. [2021-12-14 14:42:17,156 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 819 transitions. Word has length 120 [2021-12-14 14:42:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:17,157 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 819 transitions. [2021-12-14 14:42:17,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 819 transitions. [2021-12-14 14:42:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 14:42:17,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:17,159 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] [2021-12-14 14:42:17,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 14:42:17,373 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 [2021-12-14 14:42:17,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2042303042, now seen corresponding path program 1 times [2021-12-14 14:42:17,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:17,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848774905] [2021-12-14 14:42:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:17,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:42:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:42:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:42:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:42:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 14:42:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:42:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:42:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:42:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:42:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:42:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:42:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:42:17,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:17,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848774905] [2021-12-14 14:42:17,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848774905] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:42:17,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104402489] [2021-12-14 14:42:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:17,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:17,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:17,503 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) [2021-12-14 14:42:17,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:42:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:17,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 14:42:17,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:42:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 14:42:17,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:42:17,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104402489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:17,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:42:17,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-14 14:42:17,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904924354] [2021-12-14 14:42:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:17,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:42:17,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:42:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:42:17,930 INFO L87 Difference]: Start difference. First operand 534 states and 819 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:17,984 INFO L93 Difference]: Finished difference Result 1059 states and 1628 transitions. [2021-12-14 14:42:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:42:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-12-14 14:42:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:17,988 INFO L225 Difference]: With dead ends: 1059 [2021-12-14 14:42:17,989 INFO L226 Difference]: Without dead ends: 536 [2021-12-14 14:42:17,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:18,000 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 160 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2550 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 [2021-12-14 14:42:18,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 2550 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:42:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-12-14 14:42:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2021-12-14 14:42:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 416 states have (on average 1.5456730769230769) internal successors, (643), 421 states have internal predecessors, (643), 89 states have call successors, (89), 29 states have call predecessors, (89), 30 states have return successors, (90), 87 states have call predecessors, (90), 88 states have call successors, (90) [2021-12-14 14:42:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 822 transitions. [2021-12-14 14:42:18,020 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 822 transitions. Word has length 121 [2021-12-14 14:42:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:18,021 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 822 transitions. [2021-12-14 14:42:18,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 822 transitions. [2021-12-14 14:42:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-14 14:42:18,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:18,024 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-14 14:42:18,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:42:18,232 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 [2021-12-14 14:42:18,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:18,233 INFO L85 PathProgramCache]: Analyzing trace with hash -410227042, now seen corresponding path program 1 times [2021-12-14 14:42:18,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:18,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477273636] [2021-12-14 14:42:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:18,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 14:42:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 14:42:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:42:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 14:42:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:42:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:42:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:42:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:42:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:42:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:42:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 14:42:18,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:18,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477273636] [2021-12-14 14:42:18,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477273636] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:42:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004150549] [2021-12-14 14:42:18,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:18,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:18,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:18,375 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) [2021-12-14 14:42:18,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:42:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:18,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 14:42:18,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:42:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 14:42:18,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:42:18,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004150549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:18,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:42:18,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-14 14:42:18,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707538422] [2021-12-14 14:42:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:18,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:42:18,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:42:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:42:18,794 INFO L87 Difference]: Start difference. First operand 536 states and 822 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:18,859 INFO L93 Difference]: Finished difference Result 1061 states and 1633 transitions. [2021-12-14 14:42:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:42:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-12-14 14:42:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:18,863 INFO L225 Difference]: With dead ends: 1061 [2021-12-14 14:42:18,864 INFO L226 Difference]: Without dead ends: 538 [2021-12-14 14:42:18,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:42:18,866 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 159 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2539 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 [2021-12-14 14:42:18,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2539 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:42:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-14 14:42:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-12-14 14:42:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 417 states have (on average 1.5443645083932853) internal successors, (644), 423 states have internal predecessors, (644), 89 states have call successors, (89), 29 states have call predecessors, (89), 31 states have return successors, (95), 87 states have call predecessors, (95), 88 states have call successors, (95) [2021-12-14 14:42:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 828 transitions. [2021-12-14 14:42:18,881 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 828 transitions. Word has length 122 [2021-12-14 14:42:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:18,881 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 828 transitions. [2021-12-14 14:42:18,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 828 transitions. [2021-12-14 14:42:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 14:42:18,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:18,884 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] [2021-12-14 14:42:18,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 14:42:19,096 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 [2021-12-14 14:42:19,097 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1783283689, now seen corresponding path program 1 times [2021-12-14 14:42:19,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:19,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391421088] [2021-12-14 14:42:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:19,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 14:42:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:42:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 14:42:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:42:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:42:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:42:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:42:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:42:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:42:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:42:19,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:19,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391421088] [2021-12-14 14:42:19,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391421088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:19,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:19,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:42:19,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606682282] [2021-12-14 14:42:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:19,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:42:19,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:42:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:42:19,191 INFO L87 Difference]: Start difference. First operand 538 states and 828 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:21,010 INFO L93 Difference]: Finished difference Result 1287 states and 2007 transitions. [2021-12-14 14:42:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:42:21,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2021-12-14 14:42:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:21,017 INFO L225 Difference]: With dead ends: 1287 [2021-12-14 14:42:21,018 INFO L226 Difference]: Without dead ends: 772 [2021-12-14 14:42:21,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:42:21,021 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 1818 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:21,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 2167 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 14:42:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-12-14 14:42:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 538. [2021-12-14 14:42:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 417 states have (on average 1.5443645083932853) internal successors, (644), 423 states have internal predecessors, (644), 89 states have call successors, (89), 29 states have call predecessors, (89), 31 states have return successors, (94), 87 states have call predecessors, (94), 88 states have call successors, (94) [2021-12-14 14:42:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 827 transitions. [2021-12-14 14:42:21,065 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 827 transitions. Word has length 123 [2021-12-14 14:42:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:21,065 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 827 transitions. [2021-12-14 14:42:21,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 827 transitions. [2021-12-14 14:42:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 14:42:21,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:21,068 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] [2021-12-14 14:42:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:42:21,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash -14687389, now seen corresponding path program 2 times [2021-12-14 14:42:21,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362628105] [2021-12-14 14:42:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:21,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 14:42:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:42:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:42:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:42:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:42:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:42:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:42:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:42:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:42:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:42:21,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:21,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362628105] [2021-12-14 14:42:21,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362628105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:21,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:21,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:42:21,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957566243] [2021-12-14 14:42:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:21,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:42:21,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:42:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:42:21,197 INFO L87 Difference]: Start difference. First operand 538 states and 827 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:22,959 INFO L93 Difference]: Finished difference Result 1289 states and 2010 transitions. [2021-12-14 14:42:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:42:22,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2021-12-14 14:42:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:22,963 INFO L225 Difference]: With dead ends: 1289 [2021-12-14 14:42:22,963 INFO L226 Difference]: Without dead ends: 774 [2021-12-14 14:42:22,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:42:22,965 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1893 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:22,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 2132 Invalid, 3236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 14:42:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-14 14:42:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 540. [2021-12-14 14:42:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 418 states have (on average 1.5430622009569377) internal successors, (645), 425 states have internal predecessors, (645), 89 states have call successors, (89), 29 states have call predecessors, (89), 32 states have return successors, (96), 87 states have call predecessors, (96), 88 states have call successors, (96) [2021-12-14 14:42:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 830 transitions. [2021-12-14 14:42:23,002 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 830 transitions. Word has length 124 [2021-12-14 14:42:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:23,002 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 830 transitions. [2021-12-14 14:42:23,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 14:42:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 830 transitions. [2021-12-14 14:42:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-14 14:42:23,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:23,004 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] [2021-12-14 14:42:23,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:42:23,005 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:23,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:23,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1844049874, now seen corresponding path program 1 times [2021-12-14 14:42:23,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:23,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346356193] [2021-12-14 14:42:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:23,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:42:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:42:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:42:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:42:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:42:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:42:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:42:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:42:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 14:42:23,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:23,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346356193] [2021-12-14 14:42:23,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346356193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:23,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:23,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:42:23,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336860552] [2021-12-14 14:42:23,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:23,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:42:23,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:23,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:42:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:42:23,139 INFO L87 Difference]: Start difference. First operand 540 states and 830 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:42:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:25,458 INFO L93 Difference]: Finished difference Result 1287 states and 2005 transitions. [2021-12-14 14:42:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:42:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2021-12-14 14:42:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:25,465 INFO L225 Difference]: With dead ends: 1287 [2021-12-14 14:42:25,466 INFO L226 Difference]: Without dead ends: 774 [2021-12-14 14:42:25,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 14:42:25,468 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 1955 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 5377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:25,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 2874 Invalid, 5377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 4561 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 14:42:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-14 14:42:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 540. [2021-12-14 14:42:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 418 states have (on average 1.5430622009569377) internal successors, (645), 425 states have internal predecessors, (645), 89 states have call successors, (89), 29 states have call predecessors, (89), 32 states have return successors, (95), 87 states have call predecessors, (95), 88 states have call successors, (95) [2021-12-14 14:42:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 829 transitions. [2021-12-14 14:42:25,495 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 829 transitions. Word has length 125 [2021-12-14 14:42:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:25,495 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 829 transitions. [2021-12-14 14:42:25,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:42:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 829 transitions. [2021-12-14 14:42:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 14:42:25,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:25,498 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] [2021-12-14 14:42:25,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:42:25,498 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1768213281, now seen corresponding path program 2 times [2021-12-14 14:42:25,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:25,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315041002] [2021-12-14 14:42:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:25,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 14:42:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:42:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:42:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:42:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:42:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:42:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:42:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:42:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 14:42:25,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:25,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315041002] [2021-12-14 14:42:25,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315041002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:25,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:25,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:42:25,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476652581] [2021-12-14 14:42:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:25,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:42:25,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:42:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:42:25,626 INFO L87 Difference]: Start difference. First operand 540 states and 829 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:42:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:27,981 INFO L93 Difference]: Finished difference Result 1289 states and 2011 transitions. [2021-12-14 14:42:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:42:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 126 [2021-12-14 14:42:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:27,985 INFO L225 Difference]: With dead ends: 1289 [2021-12-14 14:42:27,985 INFO L226 Difference]: Without dead ends: 776 [2021-12-14 14:42:27,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 14:42:27,987 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 2078 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 4330 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 5189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 4330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:27,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2078 Valid, 2815 Invalid, 5189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 4330 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 14:42:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-12-14 14:42:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 542. [2021-12-14 14:42:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.541766109785203) internal successors, (646), 427 states have internal predecessors, (646), 89 states have call successors, (89), 29 states have call predecessors, (89), 33 states have return successors, (100), 87 states have call predecessors, (100), 88 states have call successors, (100) [2021-12-14 14:42:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 835 transitions. [2021-12-14 14:42:28,009 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 835 transitions. Word has length 126 [2021-12-14 14:42:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:28,009 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 835 transitions. [2021-12-14 14:42:28,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 14:42:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 835 transitions. [2021-12-14 14:42:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 14:42:28,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:28,018 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] [2021-12-14 14:42:28,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:42:28,018 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1051089069, now seen corresponding path program 1 times [2021-12-14 14:42:28,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:28,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553621168] [2021-12-14 14:42:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:28,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 14:42:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:42:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:42:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:42:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:42:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:42:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:42:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:42:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-14 14:42:28,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553621168] [2021-12-14 14:42:28,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553621168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:42:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136329018] [2021-12-14 14:42:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:28,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:28,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:42:28,138 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) [2021-12-14 14:42:28,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:42:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:28,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:42:28,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:42:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:28,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:42:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:28,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136329018] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:42:28,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:42:28,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-14 14:42:28,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808290455] [2021-12-14 14:42:28,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:42:28,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 14:42:28,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:28,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 14:42:28,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:42:28,794 INFO L87 Difference]: Start difference. First operand 542 states and 835 transitions. Second operand has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-14 14:42:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:32,432 INFO L93 Difference]: Finished difference Result 2198 states and 3649 transitions. [2021-12-14 14:42:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 14:42:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 127 [2021-12-14 14:42:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:32,441 INFO L225 Difference]: With dead ends: 2198 [2021-12-14 14:42:32,442 INFO L226 Difference]: Without dead ends: 1687 [2021-12-14 14:42:32,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-14 14:42:32,445 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 4324 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 6291 mSolverCounterSat, 1825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 5284 SdHoareTripleChecker+Invalid, 8116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1825 IncrementalHoareTripleChecker+Valid, 6291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:32,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 5284 Invalid, 8116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1825 Valid, 6291 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-14 14:42:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2021-12-14 14:42:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 985. [2021-12-14 14:42:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 783 states have (on average 1.5989782886334611) internal successors, (1252), 791 states have internal predecessors, (1252), 168 states have call successors, (168), 29 states have call predecessors, (168), 33 states have return successors, (189), 166 states have call predecessors, (189), 167 states have call successors, (189) [2021-12-14 14:42:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1609 transitions. [2021-12-14 14:42:32,501 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1609 transitions. Word has length 127 [2021-12-14 14:42:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:32,501 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 1609 transitions. [2021-12-14 14:42:32,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-14 14:42:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1609 transitions. [2021-12-14 14:42:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 14:42:32,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:32,512 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] [2021-12-14 14:42:32,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:42:32,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:42:32,727 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1684173326, now seen corresponding path program 1 times [2021-12-14 14:42:32,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:32,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006027386] [2021-12-14 14:42:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:32,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:42:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:42:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:42:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:42:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:42:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:42:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:42:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:42:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:32,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:32,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006027386] [2021-12-14 14:42:32,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006027386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:32,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:32,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:32,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586468829] [2021-12-14 14:42:32,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:32,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:32,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:32,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:32,824 INFO L87 Difference]: Start difference. First operand 985 states and 1609 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:34,347 INFO L93 Difference]: Finished difference Result 2549 states and 4257 transitions. [2021-12-14 14:42:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:34,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-14 14:42:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:34,355 INFO L225 Difference]: With dead ends: 2549 [2021-12-14 14:42:34,355 INFO L226 Difference]: Without dead ends: 1642 [2021-12-14 14:42:34,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:34,358 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 1825 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:34,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 1810 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:42:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-12-14 14:42:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1400. [2021-12-14 14:42:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1119 states have (on average 1.6193029490616622) internal successors, (1812), 1127 states have internal predecessors, (1812), 247 states have call successors, (247), 29 states have call predecessors, (247), 33 states have return successors, (278), 245 states have call predecessors, (278), 246 states have call successors, (278) [2021-12-14 14:42:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2337 transitions. [2021-12-14 14:42:34,432 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2337 transitions. Word has length 130 [2021-12-14 14:42:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:34,432 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2337 transitions. [2021-12-14 14:42:34,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2337 transitions. [2021-12-14 14:42:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-14 14:42:34,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:34,437 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] [2021-12-14 14:42:34,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 14:42:34,438 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1439175383, now seen corresponding path program 1 times [2021-12-14 14:42:34,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211947104] [2021-12-14 14:42:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:34,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:42:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:42:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:42:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:42:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:42:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:42:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:42:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:42:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:34,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:34,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211947104] [2021-12-14 14:42:34,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211947104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:34,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:34,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:34,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607941831] [2021-12-14 14:42:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:34,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:34,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:34,540 INFO L87 Difference]: Start difference. First operand 1400 states and 2337 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:36,027 INFO L93 Difference]: Finished difference Result 3588 states and 6070 transitions. [2021-12-14 14:42:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-14 14:42:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:36,036 INFO L225 Difference]: With dead ends: 3588 [2021-12-14 14:42:36,037 INFO L226 Difference]: Without dead ends: 2319 [2021-12-14 14:42:36,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:36,040 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1923 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:36,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1943 Valid, 1730 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [838 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:42:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2021-12-14 14:42:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2077. [2021-12-14 14:42:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1677 states have (on average 1.6302921884317234) internal successors, (2734), 1685 states have internal predecessors, (2734), 366 states have call successors, (366), 29 states have call predecessors, (366), 33 states have return successors, (397), 364 states have call predecessors, (397), 365 states have call successors, (397) [2021-12-14 14:42:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3497 transitions. [2021-12-14 14:42:36,118 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3497 transitions. Word has length 131 [2021-12-14 14:42:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:36,119 INFO L470 AbstractCegarLoop]: Abstraction has 2077 states and 3497 transitions. [2021-12-14 14:42:36,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3497 transitions. [2021-12-14 14:42:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-14 14:42:36,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:36,127 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] [2021-12-14 14:42:36,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 14:42:36,128 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash 723238404, now seen corresponding path program 1 times [2021-12-14 14:42:36,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:36,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341878040] [2021-12-14 14:42:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:36,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:42:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:42:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:42:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:42:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:42:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:42:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:42:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:42:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:36,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:36,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341878040] [2021-12-14 14:42:36,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341878040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:36,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:36,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:36,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914839294] [2021-12-14 14:42:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:36,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:36,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:36,220 INFO L87 Difference]: Start difference. First operand 2077 states and 3497 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:37,688 INFO L93 Difference]: Finished difference Result 5173 states and 8849 transitions. [2021-12-14 14:42:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:37,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-14 14:42:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:37,699 INFO L225 Difference]: With dead ends: 5173 [2021-12-14 14:42:37,700 INFO L226 Difference]: Without dead ends: 3362 [2021-12-14 14:42:37,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:37,703 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 1785 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:37,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 1761 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:42:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2021-12-14 14:42:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 3120. [2021-12-14 14:42:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 2558 states have (on average 1.638780297107115) internal successors, (4192), 2566 states have internal predecessors, (4192), 528 states have call successors, (528), 29 states have call predecessors, (528), 33 states have return successors, (575), 526 states have call predecessors, (575), 527 states have call successors, (575) [2021-12-14 14:42:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5295 transitions. [2021-12-14 14:42:37,844 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5295 transitions. Word has length 132 [2021-12-14 14:42:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:37,844 INFO L470 AbstractCegarLoop]: Abstraction has 3120 states and 5295 transitions. [2021-12-14 14:42:37,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5295 transitions. [2021-12-14 14:42:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 14:42:37,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:37,853 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] [2021-12-14 14:42:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 14:42:37,854 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash -240342154, now seen corresponding path program 1 times [2021-12-14 14:42:37,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:37,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192637747] [2021-12-14 14:42:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:37,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:42:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:42:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:42:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:42:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:42:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:42:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:42:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:42:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:37,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:37,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192637747] [2021-12-14 14:42:37,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192637747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:37,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:37,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:37,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127441010] [2021-12-14 14:42:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:37,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:37,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:37,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:37,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:37,933 INFO L87 Difference]: Start difference. First operand 3120 states and 5295 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:39,525 INFO L93 Difference]: Finished difference Result 7687 states and 13264 transitions. [2021-12-14 14:42:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-14 14:42:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:39,547 INFO L225 Difference]: With dead ends: 7687 [2021-12-14 14:42:39,547 INFO L226 Difference]: Without dead ends: 5052 [2021-12-14 14:42:39,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:39,554 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 1934 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:39,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 1720 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:42:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5052 states. [2021-12-14 14:42:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5052 to 4810. [2021-12-14 14:42:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4003 states have (on average 1.6447664251811143) internal successors, (6584), 4011 states have internal predecessors, (6584), 773 states have call successors, (773), 29 states have call predecessors, (773), 33 states have return successors, (846), 771 states have call predecessors, (846), 772 states have call successors, (846) [2021-12-14 14:42:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 8203 transitions. [2021-12-14 14:42:39,772 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 8203 transitions. Word has length 133 [2021-12-14 14:42:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:39,773 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 8203 transitions. [2021-12-14 14:42:39,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 8203 transitions. [2021-12-14 14:42:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 14:42:39,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:39,786 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:42:39,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 14:42:39,787 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 884137384, now seen corresponding path program 1 times [2021-12-14 14:42:39,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009303265] [2021-12-14 14:42:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:39,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:42:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:42:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:42:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:42:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:42:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:42:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:42:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:42:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:39,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:39,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009303265] [2021-12-14 14:42:39,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009303265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:39,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:39,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:39,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221237957] [2021-12-14 14:42:39,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:39,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:39,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:39,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:39,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:39,895 INFO L87 Difference]: Start difference. First operand 4810 states and 8203 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:41,454 INFO L93 Difference]: Finished difference Result 11888 states and 20641 transitions. [2021-12-14 14:42:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:41,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-14 14:42:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:41,495 INFO L225 Difference]: With dead ends: 11888 [2021-12-14 14:42:41,495 INFO L226 Difference]: Without dead ends: 7895 [2021-12-14 14:42:41,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:41,506 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 1921 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:41,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 1758 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 14:42:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7895 states. [2021-12-14 14:42:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7895 to 7653. [2021-12-14 14:42:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 6353 states have (on average 1.6437903352746734) internal successors, (10443), 6361 states have internal predecessors, (10443), 1266 states have call successors, (1266), 29 states have call predecessors, (1266), 33 states have return successors, (1383), 1264 states have call predecessors, (1383), 1265 states have call successors, (1383) [2021-12-14 14:42:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 13092 transitions. [2021-12-14 14:42:41,837 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 13092 transitions. Word has length 134 [2021-12-14 14:42:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:41,837 INFO L470 AbstractCegarLoop]: Abstraction has 7653 states and 13092 transitions. [2021-12-14 14:42:41,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 13092 transitions. [2021-12-14 14:42:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-14 14:42:41,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:41,859 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] [2021-12-14 14:42:41,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 14:42:41,859 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1357659182, now seen corresponding path program 1 times [2021-12-14 14:42:41,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:41,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200509509] [2021-12-14 14:42:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:41,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:42:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:42:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:42:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:42:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:42:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:42:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:42:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:42:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:41,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:41,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200509509] [2021-12-14 14:42:41,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200509509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:41,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:41,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:41,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489509113] [2021-12-14 14:42:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:41,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:41,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:41,974 INFO L87 Difference]: Start difference. First operand 7653 states and 13092 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:43,729 INFO L93 Difference]: Finished difference Result 19503 states and 33917 transitions. [2021-12-14 14:42:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:43,737 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-14 14:42:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:43,773 INFO L225 Difference]: With dead ends: 19503 [2021-12-14 14:42:43,774 INFO L226 Difference]: Without dead ends: 13069 [2021-12-14 14:42:43,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:43,789 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 1857 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:43,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 1783 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 14:42:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13069 states. [2021-12-14 14:42:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13069 to 12827. [2021-12-14 14:42:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 10705 states have (on average 1.6446520317608595) internal successors, (17606), 10713 states have internal predecessors, (17606), 2088 states have call successors, (2088), 29 states have call predecessors, (2088), 33 states have return successors, (2283), 2086 states have call predecessors, (2283), 2087 states have call successors, (2283) [2021-12-14 14:42:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 21977 transitions. [2021-12-14 14:42:44,321 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 21977 transitions. Word has length 135 [2021-12-14 14:42:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:44,321 INFO L470 AbstractCegarLoop]: Abstraction has 12827 states and 21977 transitions. [2021-12-14 14:42:44,321 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 21977 transitions. [2021-12-14 14:42:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 14:42:44,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:44,344 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] [2021-12-14 14:42:44,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 14:42:44,344 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 748994394, now seen corresponding path program 1 times [2021-12-14 14:42:44,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:44,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56294688] [2021-12-14 14:42:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:44,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:42:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:42:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:42:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:42:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:42:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:42:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:42:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:42:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:44,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:44,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56294688] [2021-12-14 14:42:44,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56294688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:44,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:44,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:44,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798635545] [2021-12-14 14:42:44,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:44,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:44,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:44,456 INFO L87 Difference]: Start difference. First operand 12827 states and 21977 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:46,428 INFO L93 Difference]: Finished difference Result 30986 states and 53617 transitions. [2021-12-14 14:42:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:46,428 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-14 14:42:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:46,490 INFO L225 Difference]: With dead ends: 30986 [2021-12-14 14:42:46,490 INFO L226 Difference]: Without dead ends: 20382 [2021-12-14 14:42:46,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:46,516 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1839 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:46,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1857 Valid, 1762 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 14:42:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20382 states. [2021-12-14 14:42:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20382 to 20140. [2021-12-14 14:42:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 16815 states have (on average 1.6206958073148974) internal successors, (27252), 16823 states have internal predecessors, (27252), 3291 states have call successors, (3291), 29 states have call predecessors, (3291), 33 states have return successors, (3630), 3289 states have call predecessors, (3630), 3290 states have call successors, (3630) [2021-12-14 14:42:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 34173 transitions. [2021-12-14 14:42:47,406 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 34173 transitions. Word has length 136 [2021-12-14 14:42:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:47,406 INFO L470 AbstractCegarLoop]: Abstraction has 20140 states and 34173 transitions. [2021-12-14 14:42:47,406 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 34173 transitions. [2021-12-14 14:42:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-14 14:42:47,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:47,429 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] [2021-12-14 14:42:47,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 14:42:47,429 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2047230127, now seen corresponding path program 1 times [2021-12-14 14:42:47,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:47,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884881785] [2021-12-14 14:42:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:47,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:42:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:42:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:42:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:42:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:42:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:42:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:42:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:42:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:47,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884881785] [2021-12-14 14:42:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884881785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:47,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347497720] [2021-12-14 14:42:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:47,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:47,510 INFO L87 Difference]: Start difference. First operand 20140 states and 34173 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:50,266 INFO L93 Difference]: Finished difference Result 53428 states and 92151 transitions. [2021-12-14 14:42:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:50,266 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-14 14:42:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:50,392 INFO L225 Difference]: With dead ends: 53428 [2021-12-14 14:42:50,393 INFO L226 Difference]: Without dead ends: 36188 [2021-12-14 14:42:50,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:50,437 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1767 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:50,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 1776 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:42:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36188 states. [2021-12-14 14:42:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36188 to 35946. [2021-12-14 14:42:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35946 states, 30171 states have (on average 1.6179112392694972) internal successors, (48814), 30179 states have internal predecessors, (48814), 5741 states have call successors, (5741), 29 states have call predecessors, (5741), 33 states have return successors, (6354), 5739 states have call predecessors, (6354), 5740 states have call successors, (6354) [2021-12-14 14:42:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35946 states to 35946 states and 60909 transitions. [2021-12-14 14:42:52,039 INFO L78 Accepts]: Start accepts. Automaton has 35946 states and 60909 transitions. Word has length 137 [2021-12-14 14:42:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:52,039 INFO L470 AbstractCegarLoop]: Abstraction has 35946 states and 60909 transitions. [2021-12-14 14:42:52,039 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 35946 states and 60909 transitions. [2021-12-14 14:42:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-14 14:42:52,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:52,064 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] [2021-12-14 14:42:52,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 14:42:52,065 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash 253409376, now seen corresponding path program 1 times [2021-12-14 14:42:52,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760413764] [2021-12-14 14:42:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:52,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:42:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:42:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:42:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:42:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:42:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:42:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:42:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:42:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:52,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:52,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760413764] [2021-12-14 14:42:52,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760413764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:52,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:52,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:52,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780977081] [2021-12-14 14:42:52,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:52,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:52,146 INFO L87 Difference]: Start difference. First operand 35946 states and 60909 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:42:56,053 INFO L93 Difference]: Finished difference Result 98275 states and 168710 transitions. [2021-12-14 14:42:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:42:56,054 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-12-14 14:42:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:42:56,279 INFO L225 Difference]: With dead ends: 98275 [2021-12-14 14:42:56,279 INFO L226 Difference]: Without dead ends: 66185 [2021-12-14 14:42:56,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:42:56,347 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1858 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 14:42:56,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 1747 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 14:42:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66185 states. [2021-12-14 14:42:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66185 to 65943. [2021-12-14 14:42:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65943 states, 55655 states have (on average 1.613996945467613) internal successors, (89827), 55663 states have internal predecessors, (89827), 10254 states have call successors, (10254), 29 states have call predecessors, (10254), 33 states have return successors, (11399), 10252 states have call predecessors, (11399), 10253 states have call successors, (11399) [2021-12-14 14:42:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65943 states to 65943 states and 111480 transitions. [2021-12-14 14:42:59,799 INFO L78 Accepts]: Start accepts. Automaton has 65943 states and 111480 transitions. Word has length 138 [2021-12-14 14:42:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:42:59,799 INFO L470 AbstractCegarLoop]: Abstraction has 65943 states and 111480 transitions. [2021-12-14 14:42:59,799 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:42:59,800 INFO L276 IsEmpty]: Start isEmpty. Operand 65943 states and 111480 transitions. [2021-12-14 14:42:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 14:42:59,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:42:59,834 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] [2021-12-14 14:42:59,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 14:42:59,834 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:42:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:42:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1496473903, now seen corresponding path program 1 times [2021-12-14 14:42:59,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:42:59,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517519363] [2021-12-14 14:42:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:42:59,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:42:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:42:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:42:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:42:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:42:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:42:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:42:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:42:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:42:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:42:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:42:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:42:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:42:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:42:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:42:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:42:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:42:59,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:42:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517519363] [2021-12-14 14:42:59,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517519363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:42:59,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:42:59,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:42:59,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246362346] [2021-12-14 14:42:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:42:59,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:42:59,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:42:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:42:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:42:59,915 INFO L87 Difference]: Start difference. First operand 65943 states and 111480 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 14:43:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:43:05,333 INFO L93 Difference]: Finished difference Result 123936 states and 213143 transitions. [2021-12-14 14:43:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:43:05,334 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, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-12-14 14:43:05,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:43:05,741 INFO L225 Difference]: With dead ends: 123936 [2021-12-14 14:43:05,742 INFO L226 Difference]: Without dead ends: 123673 [2021-12-14 14:43:05,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:43:05,789 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 1733 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:43:05,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 1799 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 14:43:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123673 states.