/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:31:20,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:31:20,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:31:20,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:31:20,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:31:20,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:31:20,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:31:20,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:31:20,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:31:20,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:31:20,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:31:20,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:31:20,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:31:20,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:31:20,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:31:20,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:31:20,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:31:20,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:31:20,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:31:20,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:31:20,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:31:20,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:31:20,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:31:20,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:31:20,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:31:20,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:31:20,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:31:20,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:31:20,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:31:20,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:31:20,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:31:20,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:31:20,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:31:20,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:31:20,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:31:20,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:31:20,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:31:20,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:31:20,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:31:20,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:31:20,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:31:20,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:31:20,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:31:20,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:31:20,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:31:20,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:31:20,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:31:20,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:31:20,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:31:20,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:31:20,775 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:31:20,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:31:20,776 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:31:20,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:31:20,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:31:20,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:31:20,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:31:20,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:31:20,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:31:20,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:31:20,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:31:20,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:31:20,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:31:20,779 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:31:21,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:31:21,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:31:21,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:31:21,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:31:21,044 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:31:21,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c [2022-01-10 06:31:21,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da62b3b/d8eadac2ad3b471487fe2091bc1510f6/FLAG66952a9c0 [2022-01-10 06:31:21,646 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:31:21,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c [2022-01-10 06:31:21,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da62b3b/d8eadac2ad3b471487fe2091bc1510f6/FLAG66952a9c0 [2022-01-10 06:31:22,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da62b3b/d8eadac2ad3b471487fe2091bc1510f6 [2022-01-10 06:31:22,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:31:22,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:31:22,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:31:22,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:31:22,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:31:22,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1deedd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22, skipping insertion in model container [2022-01-10 06:31:22,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:31:22,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:31:22,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c[51167,51180] [2022-01-10 06:31:22,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:31:22,572 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:31:22,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:31:22,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c[51167,51180] [2022-01-10 06:31:22,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:31:22,636 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:31:22,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c[51167,51180] [2022-01-10 06:31:22,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:31:22,705 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:31:22,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22 WrapperNode [2022-01-10 06:31:22,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:31:22,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:31:22,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:31:22,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:31:22,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,776 INFO L137 Inliner]: procedures = 137, calls = 242, calls flagged for inlining = 62, calls inlined = 54, statements flattened = 945 [2022-01-10 06:31:22,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:31:22,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:31:22,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:31:22,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:31:22,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:31:22,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:31:22,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:31:22,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:31:22,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (1/1) ... [2022-01-10 06:31:22,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:31:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:31:22,921 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) [2022-01-10 06:31:22,971 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 [2022-01-10 06:31:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:31:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:31:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-01-10 06:31:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-01-10 06:31:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:31:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:31:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-01-10 06:31:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-01-10 06:31:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:31:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:31:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:31:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:31:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-01-10 06:31:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-01-10 06:31:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:31:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:31:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:31:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:31:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:31:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:31:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:31:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:31:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:31:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:31:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:31:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-01-10 06:31:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:31:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:31:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:31:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:31:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:31:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:31:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:31:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:31:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:31:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:31:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:31:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:31:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:31:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:31:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:31:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:31:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:31:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:31:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:31:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-01-10 06:31:23,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-01-10 06:31:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:31:23,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:31:23,200 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:31:23,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:31:23,887 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:31:23,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:31:23,902 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:31:23,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:23 BoogieIcfgContainer [2022-01-10 06:31:23,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:31:23,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:31:23,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:31:23,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:31:23,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:31:22" (1/3) ... [2022-01-10 06:31:23,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d76d47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:23, skipping insertion in model container [2022-01-10 06:31:23,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:22" (2/3) ... [2022-01-10 06:31:23,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d76d47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:23, skipping insertion in model container [2022-01-10 06:31:23,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:23" (3/3) ... [2022-01-10 06:31:23,914 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product32.cil.c [2022-01-10 06:31:23,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:31:23,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:31:23,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:31:23,982 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 [2022-01-10 06:31:23,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:31:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 331 states have (on average 1.5498489425981874) internal successors, (513), 336 states have internal predecessors, (513), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-10 06:31:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:31:24,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:24,054 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] [2022-01-10 06:31:24,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1326838393, now seen corresponding path program 1 times [2022-01-10 06:31:24,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:24,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235649391] [2022-01-10 06:31:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:24,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:24,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:24,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:24,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:31:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:24,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:31:24,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:31:24,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:24,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235649391] [2022-01-10 06:31:24,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235649391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:24,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:24,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:31:24,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982646818] [2022-01-10 06:31:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:24,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:31:24,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:24,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:31:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:31:24,668 INFO L87 Difference]: Start difference. First operand has 426 states, 331 states have (on average 1.5498489425981874) internal successors, (513), 336 states have internal predecessors, (513), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) 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) [2022-01-10 06:31:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:24,764 INFO L93 Difference]: Finished difference Result 659 states and 976 transitions. [2022-01-10 06:31:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:31:24,766 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 [2022-01-10 06:31:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:24,785 INFO L225 Difference]: With dead ends: 659 [2022-01-10 06:31:24,786 INFO L226 Difference]: Without dead ends: 419 [2022-01-10 06:31:24,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:31:24,802 INFO L933 BasicCegarLoop]: 639 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, 639 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 [2022-01-10 06:31:24,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-01-10 06:31:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2022-01-10 06:31:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 325 states have (on average 1.5446153846153847) internal successors, (502), 329 states have internal predecessors, (502), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-01-10 06:31:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 631 transitions. [2022-01-10 06:31:24,909 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 631 transitions. Word has length 110 [2022-01-10 06:31:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:24,910 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 631 transitions. [2022-01-10 06:31:24,911 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) [2022-01-10 06:31:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 631 transitions. [2022-01-10 06:31:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:31:24,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:24,917 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] [2022-01-10 06:31:24,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:25,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:25,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash 124080943, now seen corresponding path program 1 times [2022-01-10 06:31:25,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095223024] [2022-01-10 06:31:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:25,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:25,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:25,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:25,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:31:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:25,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:31:25,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:31:25,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:25,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:25,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095223024] [2022-01-10 06:31:25,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095223024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:25,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:25,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:31:25,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165128168] [2022-01-10 06:31:25,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:25,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:31:25,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:31:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:25,723 INFO L87 Difference]: Start difference. First operand 419 states and 631 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-01-10 06:31:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:25,794 INFO L93 Difference]: Finished difference Result 829 states and 1252 transitions. [2022-01-10 06:31:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:31:25,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 111 [2022-01-10 06:31:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:25,798 INFO L225 Difference]: With dead ends: 829 [2022-01-10 06:31:25,798 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 06:31:25,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:25,801 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 152 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2314 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 [2022-01-10 06:31:25,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2314 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 06:31:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2022-01-10 06:31:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 326 states have (on average 1.5429447852760736) internal successors, (503), 331 states have internal predecessors, (503), 65 states have call successors, (65), 28 states have call predecessors, (65), 29 states have return successors, (66), 63 states have call predecessors, (66), 64 states have call successors, (66) [2022-01-10 06:31:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 634 transitions. [2022-01-10 06:31:25,820 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 634 transitions. Word has length 111 [2022-01-10 06:31:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:25,820 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 634 transitions. [2022-01-10 06:31:25,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-01-10 06:31:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 634 transitions. [2022-01-10 06:31:25,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:31:25,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:25,823 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:31:25,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:26,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:26,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:26,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 782943051, now seen corresponding path program 1 times [2022-01-10 06:31:26,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:26,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968533032] [2022-01-10 06:31:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:26,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:26,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:26,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:31:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:26,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:31:26,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:31:26,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:26,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:26,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968533032] [2022-01-10 06:31:26,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968533032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:26,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:26,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:31:26,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669305815] [2022-01-10 06:31:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:26,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:31:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:31:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:26,486 INFO L87 Difference]: Start difference. First operand 421 states and 634 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2022-01-10 06:31:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:26,559 INFO L93 Difference]: Finished difference Result 831 states and 1256 transitions. [2022-01-10 06:31:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:31:26,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 112 [2022-01-10 06:31:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:26,563 INFO L225 Difference]: With dead ends: 831 [2022-01-10 06:31:26,563 INFO L226 Difference]: Without dead ends: 423 [2022-01-10 06:31:26,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:26,565 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 151 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2303 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 [2022-01-10 06:31:26,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2303 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-10 06:31:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-01-10 06:31:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 327 states have (on average 1.5412844036697249) internal successors, (504), 333 states have internal predecessors, (504), 65 states have call successors, (65), 28 states have call predecessors, (65), 30 states have return successors, (70), 63 states have call predecessors, (70), 64 states have call successors, (70) [2022-01-10 06:31:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 639 transitions. [2022-01-10 06:31:26,581 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 639 transitions. Word has length 112 [2022-01-10 06:31:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:26,582 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 639 transitions. [2022-01-10 06:31:26,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2022-01-10 06:31:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 639 transitions. [2022-01-10 06:31:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:31:26,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:26,584 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] [2022-01-10 06:31:26,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:26,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:26,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:26,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:26,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1757089230, now seen corresponding path program 1 times [2022-01-10 06:31:26,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:26,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533947385] [2022-01-10 06:31:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:26,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:26,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:26,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:31:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:27,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:31:27,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:31:27,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:27,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:27,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533947385] [2022-01-10 06:31:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533947385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:27,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:27,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:31:27,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060341092] [2022-01-10 06:31:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:27,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:31:27,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:31:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:27,198 INFO L87 Difference]: Start difference. First operand 423 states and 639 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 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) [2022-01-10 06:31:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:27,258 INFO L93 Difference]: Finished difference Result 823 states and 1246 transitions. [2022-01-10 06:31:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:31:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 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 113 [2022-01-10 06:31:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:27,261 INFO L225 Difference]: With dead ends: 823 [2022-01-10 06:31:27,261 INFO L226 Difference]: Without dead ends: 423 [2022-01-10 06:31:27,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:27,263 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 150 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:31:27,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 2317 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-10 06:31:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-01-10 06:31:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 327 states have (on average 1.5412844036697249) internal successors, (504), 333 states have internal predecessors, (504), 65 states have call successors, (65), 28 states have call predecessors, (65), 30 states have return successors, (69), 63 states have call predecessors, (69), 64 states have call successors, (69) [2022-01-10 06:31:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 638 transitions. [2022-01-10 06:31:27,275 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 638 transitions. Word has length 113 [2022-01-10 06:31:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:27,275 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 638 transitions. [2022-01-10 06:31:27,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 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) [2022-01-10 06:31:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 638 transitions. [2022-01-10 06:31:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:31:27,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:27,277 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] [2022-01-10 06:31:27,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:27,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:27,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:27,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash -836756, now seen corresponding path program 2 times [2022-01-10 06:31:27,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:27,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627068504] [2022-01-10 06:31:27,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:31:27,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:27,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:27,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:27,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:31:27,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:31:27,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:31:27,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:27,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:31:27,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:27,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:27,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627068504] [2022-01-10 06:31:27,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627068504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:27,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:27,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:27,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919067315] [2022-01-10 06:31:27,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:27,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:27,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:27,847 INFO L87 Difference]: Start difference. First operand 423 states and 638 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-01-10 06:31:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:27,861 INFO L93 Difference]: Finished difference Result 653 states and 961 transitions. [2022-01-10 06:31:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:27,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 114 [2022-01-10 06:31:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:27,863 INFO L225 Difference]: With dead ends: 653 [2022-01-10 06:31:27,864 INFO L226 Difference]: Without dead ends: 426 [2022-01-10 06:31:27,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:27,865 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 1 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1256 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 [2022-01-10 06:31:27,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1256 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-10 06:31:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2022-01-10 06:31:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 329 states have (on average 1.5379939209726443) internal successors, (506), 335 states have internal predecessors, (506), 65 states have call successors, (65), 28 states have call predecessors, (65), 30 states have return successors, (69), 63 states have call predecessors, (69), 64 states have call successors, (69) [2022-01-10 06:31:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 640 transitions. [2022-01-10 06:31:27,875 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 640 transitions. Word has length 114 [2022-01-10 06:31:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:27,876 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 640 transitions. [2022-01-10 06:31:27,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-01-10 06:31:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 640 transitions. [2022-01-10 06:31:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:31:27,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:27,877 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] [2022-01-10 06:31:27,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:28,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:28,085 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash 440779505, now seen corresponding path program 1 times [2022-01-10 06:31:28,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:28,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578886180] [2022-01-10 06:31:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:28,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:28,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:28,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:31:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:28,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:31:28,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:31:28,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:28,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:28,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578886180] [2022-01-10 06:31:28,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578886180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:28,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:28,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:31:28,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106970821] [2022-01-10 06:31:28,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:28,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:31:28,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:28,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:31:28,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:28,491 INFO L87 Difference]: Start difference. First operand 425 states and 640 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2022-01-10 06:31:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:28,547 INFO L93 Difference]: Finished difference Result 829 states and 1253 transitions. [2022-01-10 06:31:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:31:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 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 123 [2022-01-10 06:31:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:28,550 INFO L225 Difference]: With dead ends: 829 [2022-01-10 06:31:28,550 INFO L226 Difference]: Without dead ends: 427 [2022-01-10 06:31:28,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:28,552 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 148 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:31:28,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 2319 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-10 06:31:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-01-10 06:31:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 330 states have (on average 1.5363636363636364) internal successors, (507), 337 states have internal predecessors, (507), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (71), 63 states have call predecessors, (71), 64 states have call successors, (71) [2022-01-10 06:31:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 643 transitions. [2022-01-10 06:31:28,563 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 643 transitions. Word has length 123 [2022-01-10 06:31:28,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:28,563 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 643 transitions. [2022-01-10 06:31:28,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2022-01-10 06:31:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 643 transitions. [2022-01-10 06:31:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:31:28,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:28,565 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] [2022-01-10 06:31:28,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:28,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:28,776 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -536560122, now seen corresponding path program 1 times [2022-01-10 06:31:28,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:28,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554757369] [2022-01-10 06:31:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:28,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:28,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:28,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:28,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:31:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:29,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:31:29,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:31:29,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:29,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:29,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554757369] [2022-01-10 06:31:29,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554757369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:29,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:29,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:31:29,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906891078] [2022-01-10 06:31:29,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:29,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:31:29,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:31:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:29,260 INFO L87 Difference]: Start difference. First operand 427 states and 643 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2022-01-10 06:31:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:29,329 INFO L93 Difference]: Finished difference Result 827 states and 1248 transitions. [2022-01-10 06:31:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:31:29,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 124 [2022-01-10 06:31:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:29,342 INFO L225 Difference]: With dead ends: 827 [2022-01-10 06:31:29,342 INFO L226 Difference]: Without dead ends: 427 [2022-01-10 06:31:29,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:29,344 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 149 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:31:29,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 2306 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-10 06:31:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-01-10 06:31:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 330 states have (on average 1.5363636363636364) internal successors, (507), 337 states have internal predecessors, (507), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (70), 63 states have call predecessors, (70), 64 states have call successors, (70) [2022-01-10 06:31:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 642 transitions. [2022-01-10 06:31:29,376 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 642 transitions. Word has length 124 [2022-01-10 06:31:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:29,376 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 642 transitions. [2022-01-10 06:31:29,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2022-01-10 06:31:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 642 transitions. [2022-01-10 06:31:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:31:29,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:29,378 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] [2022-01-10 06:31:29,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:29,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:29,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1227289687, now seen corresponding path program 2 times [2022-01-10 06:31:29,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:29,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138036041] [2022-01-10 06:31:29,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:31:29,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:29,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:29,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:29,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:31:29,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:31:29,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:31:29,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:31:29,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:31:30,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:30,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:30,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138036041] [2022-01-10 06:31:30,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138036041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:30,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:30,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:31:30,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358010813] [2022-01-10 06:31:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:30,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:31:30,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:31:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:30,127 INFO L87 Difference]: Start difference. First operand 427 states and 642 transitions. Second operand has 5 states, 5 states have (on average 16.6) 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), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:31:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:30,196 INFO L93 Difference]: Finished difference Result 829 states and 1253 transitions. [2022-01-10 06:31:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:31:30,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) 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), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2022-01-10 06:31:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:30,199 INFO L225 Difference]: With dead ends: 829 [2022-01-10 06:31:30,199 INFO L226 Difference]: Without dead ends: 429 [2022-01-10 06:31:30,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:30,201 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 147 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:31:30,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2308 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-10 06:31:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-01-10 06:31:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 331 states have (on average 1.5347432024169185) internal successors, (508), 339 states have internal predecessors, (508), 65 states have call successors, (65), 28 states have call predecessors, (65), 32 states have return successors, (74), 63 states have call predecessors, (74), 64 states have call successors, (74) [2022-01-10 06:31:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 647 transitions. [2022-01-10 06:31:30,211 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 647 transitions. Word has length 125 [2022-01-10 06:31:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:30,211 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 647 transitions. [2022-01-10 06:31:30,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) 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), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:31:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 647 transitions. [2022-01-10 06:31:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:31:30,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:30,213 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] [2022-01-10 06:31:30,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:30,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:30,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:30,436 INFO L85 PathProgramCache]: Analyzing trace with hash -306013503, now seen corresponding path program 1 times [2022-01-10 06:31:30,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:30,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525884659] [2022-01-10 06:31:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:30,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:30,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:30,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:30,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:31:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:30,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:30,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:30,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:30,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525884659] [2022-01-10 06:31:30,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525884659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:30,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:30,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:30,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772684054] [2022-01-10 06:31:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:30,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:30,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:30,784 INFO L87 Difference]: Start difference. First operand 429 states and 647 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2022-01-10 06:31:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:30,801 INFO L93 Difference]: Finished difference Result 902 states and 1380 transitions. [2022-01-10 06:31:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:30,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 126 [2022-01-10 06:31:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:30,804 INFO L225 Difference]: With dead ends: 902 [2022-01-10 06:31:30,804 INFO L226 Difference]: Without dead ends: 504 [2022-01-10 06:31:30,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:30,806 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 134 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1240 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 [2022-01-10 06:31:30,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1240 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-01-10 06:31:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 496. [2022-01-10 06:31:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 384 states have (on average 1.5546875) internal successors, (597), 392 states have internal predecessors, (597), 79 states have call successors, (79), 28 states have call predecessors, (79), 32 states have return successors, (90), 77 states have call predecessors, (90), 78 states have call successors, (90) [2022-01-10 06:31:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 766 transitions. [2022-01-10 06:31:30,820 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 766 transitions. Word has length 126 [2022-01-10 06:31:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:30,820 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 766 transitions. [2022-01-10 06:31:30,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2022-01-10 06:31:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 766 transitions. [2022-01-10 06:31:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:31:30,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:30,822 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] [2022-01-10 06:31:30,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 06:31:31,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:31,031 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:31,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1793057201, now seen corresponding path program 1 times [2022-01-10 06:31:31,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:31,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580612271] [2022-01-10 06:31:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:31,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:31,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:31,034 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:31,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:31:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:31,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:31:31,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:31:31,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:31,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580612271] [2022-01-10 06:31:31,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580612271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:31,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:31,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:31:31,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863062406] [2022-01-10 06:31:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:31,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:31:31,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:31:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:31:31,395 INFO L87 Difference]: Start difference. First operand 496 states and 766 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:31:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:31,513 INFO L93 Difference]: Finished difference Result 1138 states and 1786 transitions. [2022-01-10 06:31:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:31:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 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 127 [2022-01-10 06:31:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:31,518 INFO L225 Difference]: With dead ends: 1138 [2022-01-10 06:31:31,518 INFO L226 Difference]: Without dead ends: 671 [2022-01-10 06:31:31,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:31:31,520 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 741 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:31:31,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1460 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:31:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-01-10 06:31:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 504. [2022-01-10 06:31:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 391 states have (on average 1.5421994884910486) internal successors, (603), 398 states have internal predecessors, (603), 79 states have call successors, (79), 30 states have call predecessors, (79), 33 states have return successors, (86), 77 states have call predecessors, (86), 78 states have call successors, (86) [2022-01-10 06:31:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 768 transitions. [2022-01-10 06:31:31,543 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 768 transitions. Word has length 127 [2022-01-10 06:31:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:31,543 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 768 transitions. [2022-01-10 06:31:31,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:31:31,543 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 768 transitions. [2022-01-10 06:31:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:31:31,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:31,545 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:31:31,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 06:31:31,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:31,756 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:31,757 INFO L85 PathProgramCache]: Analyzing trace with hash -467284438, now seen corresponding path program 1 times [2022-01-10 06:31:31,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:31,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707025066] [2022-01-10 06:31:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:31,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:31,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:31,759 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:31,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:31:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:32,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:31:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:32,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:31:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:32,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:32,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707025066] [2022-01-10 06:31:32,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707025066] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:31:32,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:31:32,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:31:32,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863984970] [2022-01-10 06:31:32,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:31:32,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:31:32,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:31:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:31:32,369 INFO L87 Difference]: Start difference. First operand 504 states and 768 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-01-10 06:31:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:32,587 INFO L93 Difference]: Finished difference Result 1168 states and 1841 transitions. [2022-01-10 06:31:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:31:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 128 [2022-01-10 06:31:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:32,592 INFO L225 Difference]: With dead ends: 1168 [2022-01-10 06:31:32,592 INFO L226 Difference]: Without dead ends: 941 [2022-01-10 06:31:32,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:31:32,593 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 689 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:31:32,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 2274 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:31:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-01-10 06:31:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 917. [2022-01-10 06:31:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 725 states have (on average 1.5944827586206896) internal successors, (1156), 732 states have internal predecessors, (1156), 158 states have call successors, (158), 30 states have call predecessors, (158), 33 states have return successors, (175), 156 states have call predecessors, (175), 157 states have call successors, (175) [2022-01-10 06:31:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1489 transitions. [2022-01-10 06:31:32,623 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1489 transitions. Word has length 128 [2022-01-10 06:31:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:32,623 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1489 transitions. [2022-01-10 06:31:32,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-01-10 06:31:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1489 transitions. [2022-01-10 06:31:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:31:32,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:32,627 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] [2022-01-10 06:31:32,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:32,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:32,837 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:32,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1120843304, now seen corresponding path program 1 times [2022-01-10 06:31:32,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:32,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443087615] [2022-01-10 06:31:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:32,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:32,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:32,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:31:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:33,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:33,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:33,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:33,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:33,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443087615] [2022-01-10 06:31:33,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443087615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:33,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:33,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:33,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784304474] [2022-01-10 06:31:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:33,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:33,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:33,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:33,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:33,244 INFO L87 Difference]: Start difference. First operand 917 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-10 06:31:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:33,290 INFO L93 Difference]: Finished difference Result 2146 states and 3557 transitions. [2022-01-10 06:31:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 130 [2022-01-10 06:31:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:33,298 INFO L225 Difference]: With dead ends: 2146 [2022-01-10 06:31:33,298 INFO L226 Difference]: Without dead ends: 1315 [2022-01-10 06:31:33,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:33,301 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 128 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1276 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 [2022-01-10 06:31:33,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1276 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-01-10 06:31:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1307. [2022-01-10 06:31:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1036 states have (on average 1.6177606177606179) internal successors, (1676), 1043 states have internal predecessors, (1676), 237 states have call successors, (237), 30 states have call predecessors, (237), 33 states have return successors, (264), 235 states have call predecessors, (264), 236 states have call successors, (264) [2022-01-10 06:31:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2177 transitions. [2022-01-10 06:31:33,373 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2177 transitions. Word has length 130 [2022-01-10 06:31:33,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:33,373 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 2177 transitions. [2022-01-10 06:31:33,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-10 06:31:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2177 transitions. [2022-01-10 06:31:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:31:33,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:33,379 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] [2022-01-10 06:31:33,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:33,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:33,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 376664275, now seen corresponding path program 1 times [2022-01-10 06:31:33,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:33,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140879543] [2022-01-10 06:31:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:33,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:33,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:33,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:33,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:31:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:33,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:33,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:33,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:33,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140879543] [2022-01-10 06:31:33,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140879543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:33,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:33,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:33,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383318643] [2022-01-10 06:31:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:33,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:33,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:33,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:33,992 INFO L87 Difference]: Start difference. First operand 1307 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-01-10 06:31:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:34,147 INFO L93 Difference]: Finished difference Result 3115 states and 5235 transitions. [2022-01-10 06:31:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:34,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 131 [2022-01-10 06:31:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:34,162 INFO L225 Difference]: With dead ends: 3115 [2022-01-10 06:31:34,162 INFO L226 Difference]: Without dead ends: 1947 [2022-01-10 06:31:34,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:34,166 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 126 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1263 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 [2022-01-10 06:31:34,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1263 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2022-01-10 06:31:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1939. [2022-01-10 06:31:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1549 states have (on average 1.6262104583602324) internal successors, (2519), 1556 states have internal predecessors, (2519), 356 states have call successors, (356), 30 states have call predecessors, (356), 33 states have return successors, (383), 354 states have call predecessors, (383), 355 states have call successors, (383) [2022-01-10 06:31:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3258 transitions. [2022-01-10 06:31:34,236 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3258 transitions. Word has length 131 [2022-01-10 06:31:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 1939 states and 3258 transitions. [2022-01-10 06:31:34,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-01-10 06:31:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3258 transitions. [2022-01-10 06:31:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:31:34,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:34,244 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] [2022-01-10 06:31:34,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:34,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:34,457 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash 26451706, now seen corresponding path program 1 times [2022-01-10 06:31:34,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118397850] [2022-01-10 06:31:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:34,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:34,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:34,459 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:34,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:31:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:34,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:34,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:34,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118397850] [2022-01-10 06:31:34,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118397850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:34,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:34,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:34,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264267170] [2022-01-10 06:31:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:34,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:34,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:34,850 INFO L87 Difference]: Start difference. First operand 1939 states and 3258 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-01-10 06:31:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:34,940 INFO L93 Difference]: Finished difference Result 4584 states and 7779 transitions. [2022-01-10 06:31:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 132 [2022-01-10 06:31:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:34,953 INFO L225 Difference]: With dead ends: 4584 [2022-01-10 06:31:34,953 INFO L226 Difference]: Without dead ends: 2917 [2022-01-10 06:31:34,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:34,958 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 124 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1258 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 [2022-01-10 06:31:34,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1258 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-01-10 06:31:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2909. [2022-01-10 06:31:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2357 states have (on average 1.6330080610946118) internal successors, (3849), 2364 states have internal predecessors, (3849), 518 states have call successors, (518), 30 states have call predecessors, (518), 33 states have return successors, (561), 516 states have call predecessors, (561), 517 states have call successors, (561) [2022-01-10 06:31:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4928 transitions. [2022-01-10 06:31:35,090 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4928 transitions. Word has length 132 [2022-01-10 06:31:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:35,091 INFO L470 AbstractCegarLoop]: Abstraction has 2909 states and 4928 transitions. [2022-01-10 06:31:35,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-01-10 06:31:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4928 transitions. [2022-01-10 06:31:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:31:35,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:35,102 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] [2022-01-10 06:31:35,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:35,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:35,313 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:35,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1810393266, now seen corresponding path program 1 times [2022-01-10 06:31:35,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:35,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394741028] [2022-01-10 06:31:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:35,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:35,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:35,315 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:35,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:31:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:35,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:35,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:35,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:35,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394741028] [2022-01-10 06:31:35,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394741028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:35,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:35,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:35,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043759848] [2022-01-10 06:31:35,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:35,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:35,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:35,664 INFO L87 Difference]: Start difference. First operand 2909 states and 4928 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2022-01-10 06:31:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:35,810 INFO L93 Difference]: Finished difference Result 6905 states and 11803 transitions. [2022-01-10 06:31:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:35,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 133 [2022-01-10 06:31:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:35,827 INFO L225 Difference]: With dead ends: 6905 [2022-01-10 06:31:35,827 INFO L226 Difference]: Without dead ends: 4484 [2022-01-10 06:31:35,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:35,834 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 122 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1258 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 [2022-01-10 06:31:35,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1258 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2022-01-10 06:31:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4476. [2022-01-10 06:31:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 3679 states have (on average 1.6379450937754825) internal successors, (6026), 3686 states have internal predecessors, (6026), 763 states have call successors, (763), 30 states have call predecessors, (763), 33 states have return successors, (832), 761 states have call predecessors, (832), 762 states have call successors, (832) [2022-01-10 06:31:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 7621 transitions. [2022-01-10 06:31:36,030 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 7621 transitions. Word has length 133 [2022-01-10 06:31:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:36,030 INFO L470 AbstractCegarLoop]: Abstraction has 4476 states and 7621 transitions. [2022-01-10 06:31:36,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2022-01-10 06:31:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 7621 transitions. [2022-01-10 06:31:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:31:36,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:36,060 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] [2022-01-10 06:31:36,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:36,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:36,260 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:36,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2086254754, now seen corresponding path program 1 times [2022-01-10 06:31:36,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:36,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212690069] [2022-01-10 06:31:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:36,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:36,264 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:36,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:31:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:36,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:36,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:36,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:36,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212690069] [2022-01-10 06:31:36,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212690069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:36,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:36,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:36,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691029282] [2022-01-10 06:31:36,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:36,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:36,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:36,667 INFO L87 Difference]: Start difference. First operand 4476 states and 7621 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-01-10 06:31:36,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:36,949 INFO L93 Difference]: Finished difference Result 11045 states and 18939 transitions. [2022-01-10 06:31:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:36,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 134 [2022-01-10 06:31:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:36,994 INFO L225 Difference]: With dead ends: 11045 [2022-01-10 06:31:36,995 INFO L226 Difference]: Without dead ends: 7305 [2022-01-10 06:31:37,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:37,004 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 120 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1273 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 [2022-01-10 06:31:37,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1273 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7305 states. [2022-01-10 06:31:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7305 to 7297. [2022-01-10 06:31:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 6007 states have (on average 1.6345929748626602) internal successors, (9819), 6014 states have internal predecessors, (9819), 1256 states have call successors, (1256), 30 states have call predecessors, (1256), 33 states have return successors, (1369), 1254 states have call predecessors, (1369), 1255 states have call successors, (1369) [2022-01-10 06:31:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 12444 transitions. [2022-01-10 06:31:37,330 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 12444 transitions. Word has length 134 [2022-01-10 06:31:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:37,330 INFO L470 AbstractCegarLoop]: Abstraction has 7297 states and 12444 transitions. [2022-01-10 06:31:37,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-01-10 06:31:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 12444 transitions. [2022-01-10 06:31:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:31:37,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:37,348 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] [2022-01-10 06:31:37,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:31:37,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:37,560 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:37,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:37,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1069215666, now seen corresponding path program 1 times [2022-01-10 06:31:37,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:37,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344512024] [2022-01-10 06:31:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:37,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:37,562 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:37,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:31:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:37,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:37,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:37,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:37,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:37,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344512024] [2022-01-10 06:31:37,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344512024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:37,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:37,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:37,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914079066] [2022-01-10 06:31:37,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:37,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:37,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:37,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:37,960 INFO L87 Difference]: Start difference. First operand 7297 states and 12444 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 06:31:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:38,395 INFO L93 Difference]: Finished difference Result 18409 states and 31624 transitions. [2022-01-10 06:31:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:38,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 135 [2022-01-10 06:31:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:38,445 INFO L225 Difference]: With dead ends: 18409 [2022-01-10 06:31:38,445 INFO L226 Difference]: Without dead ends: 12245 [2022-01-10 06:31:38,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:38,470 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 118 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1263 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 [2022-01-10 06:31:38,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1263 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12245 states. [2022-01-10 06:31:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12245 to 12237. [2022-01-10 06:31:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12237 states, 10125 states have (on average 1.6348641975308642) internal successors, (16553), 10132 states have internal predecessors, (16553), 2078 states have call successors, (2078), 30 states have call predecessors, (2078), 33 states have return successors, (2269), 2076 states have call predecessors, (2269), 2077 states have call successors, (2269) [2022-01-10 06:31:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12237 states to 12237 states and 20900 transitions. [2022-01-10 06:31:39,206 INFO L78 Accepts]: Start accepts. Automaton has 12237 states and 20900 transitions. Word has length 135 [2022-01-10 06:31:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:39,207 INFO L470 AbstractCegarLoop]: Abstraction has 12237 states and 20900 transitions. [2022-01-10 06:31:39,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 06:31:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12237 states and 20900 transitions. [2022-01-10 06:31:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:31:39,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:39,243 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] [2022-01-10 06:31:39,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 06:31:39,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:39,474 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:39,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash 912684476, now seen corresponding path program 1 times [2022-01-10 06:31:39,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:39,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155426723] [2022-01-10 06:31:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:39,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:39,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:39,483 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:39,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:31:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:39,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:39,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:39,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:39,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:39,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155426723] [2022-01-10 06:31:39,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155426723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:39,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:39,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:39,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452810482] [2022-01-10 06:31:39,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:39,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:39,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:39,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:39,915 INFO L87 Difference]: Start difference. First operand 12237 states and 20900 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-01-10 06:31:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:40,549 INFO L93 Difference]: Finished difference Result 29262 states and 49888 transitions. [2022-01-10 06:31:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:40,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 136 [2022-01-10 06:31:40,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:40,599 INFO L225 Difference]: With dead ends: 29262 [2022-01-10 06:31:40,599 INFO L226 Difference]: Without dead ends: 19126 [2022-01-10 06:31:40,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:40,623 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 116 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1240 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 [2022-01-10 06:31:40,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1240 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2022-01-10 06:31:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19118. [2022-01-10 06:31:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19118 states, 15803 states have (on average 1.6077327089793076) internal successors, (25407), 15810 states have internal predecessors, (25407), 3281 states have call successors, (3281), 30 states have call predecessors, (3281), 33 states have return successors, (3616), 3279 states have call predecessors, (3616), 3280 states have call successors, (3616) [2022-01-10 06:31:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19118 states to 19118 states and 32304 transitions. [2022-01-10 06:31:41,479 INFO L78 Accepts]: Start accepts. Automaton has 19118 states and 32304 transitions. Word has length 136 [2022-01-10 06:31:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:41,479 INFO L470 AbstractCegarLoop]: Abstraction has 19118 states and 32304 transitions. [2022-01-10 06:31:41,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-01-10 06:31:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 19118 states and 32304 transitions. [2022-01-10 06:31:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:31:41,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:41,503 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] [2022-01-10 06:31:41,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:41,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:41,715 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:41,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1455929203, now seen corresponding path program 1 times [2022-01-10 06:31:41,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:41,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015196598] [2022-01-10 06:31:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:41,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:41,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:41,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:31:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:42,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:42,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:42,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:42,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:42,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015196598] [2022-01-10 06:31:42,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015196598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:42,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:42,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:42,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169352773] [2022-01-10 06:31:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:42,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:42,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:42,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:42,280 INFO L87 Difference]: Start difference. First operand 19118 states and 32304 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 06:31:43,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:43,610 INFO L93 Difference]: Finished difference Result 50492 states and 85660 transitions. [2022-01-10 06:31:43,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:43,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 137 [2022-01-10 06:31:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:43,885 INFO L225 Difference]: With dead ends: 50492 [2022-01-10 06:31:43,885 INFO L226 Difference]: Without dead ends: 34110 [2022-01-10 06:31:43,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:43,923 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 114 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1263 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 [2022-01-10 06:31:43,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1263 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:43,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34110 states. [2022-01-10 06:31:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34110 to 34102. [2022-01-10 06:31:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34102 states, 28337 states have (on average 1.6043335568338215) internal successors, (45462), 28344 states have internal predecessors, (45462), 5731 states have call successors, (5731), 30 states have call predecessors, (5731), 33 states have return successors, (6340), 5729 states have call predecessors, (6340), 5730 states have call successors, (6340) [2022-01-10 06:31:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34102 states to 34102 states and 57533 transitions. [2022-01-10 06:31:45,856 INFO L78 Accepts]: Start accepts. Automaton has 34102 states and 57533 transitions. Word has length 137 [2022-01-10 06:31:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:45,856 INFO L470 AbstractCegarLoop]: Abstraction has 34102 states and 57533 transitions. [2022-01-10 06:31:45,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 06:31:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 34102 states and 57533 transitions. [2022-01-10 06:31:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:31:45,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:45,926 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] [2022-01-10 06:31:45,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:31:46,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:46,127 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1215744514, now seen corresponding path program 1 times [2022-01-10 06:31:46,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:46,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134803216] [2022-01-10 06:31:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:46,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:46,129 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:46,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:31:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:46,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:46,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:46,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:46,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:46,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134803216] [2022-01-10 06:31:46,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134803216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:46,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:46,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:46,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611150620] [2022-01-10 06:31:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:46,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:46,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:46,747 INFO L87 Difference]: Start difference. First operand 34102 states and 57533 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-01-10 06:31:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:49,865 INFO L93 Difference]: Finished difference Result 92969 states and 157342 transitions. [2022-01-10 06:31:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 138 [2022-01-10 06:31:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:50,155 INFO L225 Difference]: With dead ends: 92969 [2022-01-10 06:31:50,155 INFO L226 Difference]: Without dead ends: 62511 [2022-01-10 06:31:50,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:50,232 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 112 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1272 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 [2022-01-10 06:31:50,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1272 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62511 states. [2022-01-10 06:31:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62511 to 62503. [2022-01-10 06:31:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62503 states, 52225 states have (on average 1.5997893729056964) internal successors, (83549), 52232 states have internal predecessors, (83549), 10244 states have call successors, (10244), 30 states have call predecessors, (10244), 33 states have return successors, (11385), 10242 states have call predecessors, (11385), 10243 states have call successors, (11385) [2022-01-10 06:31:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62503 states to 62503 states and 105178 transitions. [2022-01-10 06:31:53,743 INFO L78 Accepts]: Start accepts. Automaton has 62503 states and 105178 transitions. Word has length 138 [2022-01-10 06:31:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:31:53,744 INFO L470 AbstractCegarLoop]: Abstraction has 62503 states and 105178 transitions. [2022-01-10 06:31:53,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-01-10 06:31:53,744 INFO L276 IsEmpty]: Start isEmpty. Operand 62503 states and 105178 transitions. [2022-01-10 06:31:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:31:53,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:31:53,818 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] [2022-01-10 06:31:53,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:31:54,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:31:54,029 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:31:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:31:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1916980019, now seen corresponding path program 1 times [2022-01-10 06:31:54,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:31:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158423136] [2022-01-10 06:31:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:31:54,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:31:54,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:31:54,034 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:31:54,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:31:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:31:54,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:31:54,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:31:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:31:54,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:31:54,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:31:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158423136] [2022-01-10 06:31:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158423136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:31:54,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:31:54,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:31:54,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717466779] [2022-01-10 06:31:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:31:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:31:54,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:31:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:31:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:54,720 INFO L87 Difference]: Start difference. First operand 62503 states and 105178 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-01-10 06:31:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:31:58,734 INFO L93 Difference]: Finished difference Result 117088 states and 197379 transitions. [2022-01-10 06:31:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:31:58,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 139 [2022-01-10 06:31:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:31:59,398 INFO L225 Difference]: With dead ends: 117088 [2022-01-10 06:31:59,398 INFO L226 Difference]: Without dead ends: 116861 [2022-01-10 06:31:59,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:31:59,446 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 110 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1263 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 [2022-01-10 06:31:59,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1263 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:31:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116861 states. [2022-01-10 06:32:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116861 to 116853. [2022-01-10 06:32:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116853 states, 98207 states have (on average 1.5940615231093507) internal successors, (156548), 98214 states have internal predecessors, (156548), 18612 states have call successors, (18612), 30 states have call predecessors, (18612), 33 states have return successors, (20799), 18610 states have call predecessors, (20799), 18611 states have call successors, (20799) [2022-01-10 06:32:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116853 states to 116853 states and 195959 transitions. [2022-01-10 06:32:05,538 INFO L78 Accepts]: Start accepts. Automaton has 116853 states and 195959 transitions. Word has length 139 [2022-01-10 06:32:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:32:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 116853 states and 195959 transitions. [2022-01-10 06:32:05,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-01-10 06:32:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 116853 states and 195959 transitions. [2022-01-10 06:32:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:32:05,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:32:05,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:32:05,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:32:05,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:32:05,789 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:32:05,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:32:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 58900803, now seen corresponding path program 1 times [2022-01-10 06:32:05,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:32:05,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335248398] [2022-01-10 06:32:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:32:05,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:32:05,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:32:05,792 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:32:05,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:32:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:32:06,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:32:06,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:32:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:32:06,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:32:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:32:06,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:32:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335248398] [2022-01-10 06:32:06,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335248398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:32:06,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:32:06,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:32:06,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010114832] [2022-01-10 06:32:06,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:32:06,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:32:06,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:32:06,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:32:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:32:06,780 INFO L87 Difference]: Start difference. First operand 116853 states and 195959 transitions. Second operand has 16 states, 16 states have (on average 11.0) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2022-01-10 06:32:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:32:24,494 INFO L93 Difference]: Finished difference Result 344183 states and 583939 transitions. [2022-01-10 06:32:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:32:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) Word has length 140 [2022-01-10 06:32:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:32:26,383 INFO L225 Difference]: With dead ends: 344183 [2022-01-10 06:32:26,383 INFO L226 Difference]: Without dead ends: 343964 [2022-01-10 06:32:26,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2022-01-10 06:32:26,537 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 1485 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 5501 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 5897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 5501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:32:26,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 3589 Invalid, 5897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 5501 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 06:32:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343964 states.