/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_spec1_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:21:37,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:21:37,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:21:37,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:21:37,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:21:37,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:21:37,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:21:37,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:21:37,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:21:37,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:21:37,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:21:37,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:21:37,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:21:37,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:21:37,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:21:37,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:21:37,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:21:37,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:21:37,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:21:37,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:21:37,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:21:37,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:21:37,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:21:37,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:21:37,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:21:37,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:21:37,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:21:37,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:21:37,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:21:37,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:21:37,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:21:37,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:21:37,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:21:37,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:21:37,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:21:37,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:21:37,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:21:37,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:21:37,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:21:37,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:21:37,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:21:37,922 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 06:21:37,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:21:37,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:21:37,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:21:37,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:21:37,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:21:37,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:21:37,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:21:37,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:21:37,955 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:21:37,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:21:37,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:21:37,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:21:37,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:21:37,957 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:21:37,958 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:21:37,958 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:21:37,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:21:37,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:21:37,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:21:37,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:21:38,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:21:38,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:21:38,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:21:38,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:21:38,168 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:21:38,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2022-01-10 06:21:38,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f270572bd/e6808e26456442db8980a2bb08f91684/FLAGa3b41cf75 [2022-01-10 06:21:38,591 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:21:38,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2022-01-10 06:21:38,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f270572bd/e6808e26456442db8980a2bb08f91684/FLAGa3b41cf75 [2022-01-10 06:21:38,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f270572bd/e6808e26456442db8980a2bb08f91684 [2022-01-10 06:21:38,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:21:38,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:21:38,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:21:38,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:21:38,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:21:38,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:21:38" (1/1) ... [2022-01-10 06:21:38,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e71c220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:38, skipping insertion in model container [2022-01-10 06:21:38,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:21:38" (1/1) ... [2022-01-10 06:21:38,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:21:39,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:21:39,303 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_spec1_product15.cil.c[34816,34829] [2022-01-10 06:21:39,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:39,424 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:21:39,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:21:39,481 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_spec1_product15.cil.c[34816,34829] [2022-01-10 06:21:39,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:39,542 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:21:39,583 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_spec1_product15.cil.c[34816,34829] [2022-01-10 06:21:39,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:39,631 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:21:39,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39 WrapperNode [2022-01-10 06:21:39,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:21:39,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:21:39,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:21:39,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:21:39,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,718 INFO L137 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 835 [2022-01-10 06:21:39,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:21:39,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:21:39,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:21:39,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:21:39,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:21:39,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:21:39,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:21:39,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:21:39,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (1/1) ... [2022-01-10 06:21:39,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:21:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:21:39,794 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 06:21:39,796 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 06:21:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:21:39,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:21:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:21:39,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:21:39,824 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:21:39,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:21:39,824 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:21:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:21:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:21:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:21:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:21:39,976 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:21:39,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:21:40,499 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:21:40,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:21:40,506 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:21:40,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:21:40 BoogieIcfgContainer [2022-01-10 06:21:40,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:21:40,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:21:40,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:21:40,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:21:40,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:21:38" (1/3) ... [2022-01-10 06:21:40,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c15d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:21:40, skipping insertion in model container [2022-01-10 06:21:40,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:39" (2/3) ... [2022-01-10 06:21:40,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c15d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:21:40, skipping insertion in model container [2022-01-10 06:21:40,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:21:40" (3/3) ... [2022-01-10 06:21:40,520 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2022-01-10 06:21:40,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:21:40,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:21:40,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:21:40,557 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 06:21:40,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:21:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 225 states have (on average 1.5466666666666666) internal successors, (348), 229 states have internal predecessors, (348), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 06:21:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:21:40,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:40,600 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] [2022-01-10 06:21:40,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 438806230, now seen corresponding path program 1 times [2022-01-10 06:21:40,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:40,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559011907] [2022-01-10 06:21:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:40,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:40,617 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 06:21:40,618 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 06:21:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:40,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:21:40,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:41,074 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 06:21:41,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:41,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:41,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559011907] [2022-01-10 06:21:41,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559011907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:41,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:41,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:21:41,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314950515] [2022-01-10 06:21:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:41,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:21:41,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:21:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:21:41,135 INFO L87 Difference]: Start difference. First operand has 286 states, 225 states have (on average 1.5466666666666666) internal successors, (348), 229 states have internal predecessors, (348), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:41,191 INFO L93 Difference]: Finished difference Result 418 states and 618 transitions. [2022-01-10 06:21:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:21:41,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-01-10 06:21:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:41,213 INFO L225 Difference]: With dead ends: 418 [2022-01-10 06:21:41,214 INFO L226 Difference]: Without dead ends: 279 [2022-01-10 06:21:41,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 88 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 06:21:41,222 INFO L933 BasicCegarLoop]: 428 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, 428 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 06:21:41,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:41,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-01-10 06:21:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-01-10 06:21:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 219 states have (on average 1.538812785388128) internal successors, (337), 222 states have internal predecessors, (337), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-10 06:21:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 420 transitions. [2022-01-10 06:21:41,295 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 420 transitions. Word has length 89 [2022-01-10 06:21:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:41,296 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 420 transitions. [2022-01-10 06:21:41,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 420 transitions. [2022-01-10 06:21:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 06:21:41,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:41,307 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] [2022-01-10 06:21:41,320 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 06:21:41,517 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 06:21:41,520 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash -716065147, now seen corresponding path program 1 times [2022-01-10 06:21:41,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:41,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708310779] [2022-01-10 06:21:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:41,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:41,523 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 06:21:41,524 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 06:21:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:41,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:21:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:41,855 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 06:21:41,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:41,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708310779] [2022-01-10 06:21:41,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708310779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:41,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:41,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:41,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839474667] [2022-01-10 06:21:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:41,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:41,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:41,858 INFO L87 Difference]: Start difference. First operand 279 states and 420 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:41,924 INFO L93 Difference]: Finished difference Result 549 states and 830 transitions. [2022-01-10 06:21:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2022-01-10 06:21:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:41,928 INFO L225 Difference]: With dead ends: 549 [2022-01-10 06:21:41,928 INFO L226 Difference]: Without dead ends: 281 [2022-01-10 06:21:41,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 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 06:21:41,931 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 125 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1500 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 06:21:41,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1500 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-01-10 06:21:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-01-10 06:21:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 220 states have (on average 1.5363636363636364) internal successors, (338), 224 states have internal predecessors, (338), 42 states have call successors, (42), 17 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-01-10 06:21:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 423 transitions. [2022-01-10 06:21:41,950 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 423 transitions. Word has length 90 [2022-01-10 06:21:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:41,950 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 423 transitions. [2022-01-10 06:21:41,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 423 transitions. [2022-01-10 06:21:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:21:41,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:41,952 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] [2022-01-10 06:21:41,964 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 06:21:42,162 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 06:21:42,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1428612313, now seen corresponding path program 1 times [2022-01-10 06:21:42,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:42,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936192912] [2022-01-10 06:21:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:42,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:42,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:42,165 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 06:21:42,166 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 06:21:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:42,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:42,477 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 06:21:42,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:42,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:42,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936192912] [2022-01-10 06:21:42,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936192912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:42,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:42,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:42,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342654234] [2022-01-10 06:21:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:42,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:42,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:42,483 INFO L87 Difference]: Start difference. First operand 281 states and 423 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:42,552 INFO L93 Difference]: Finished difference Result 551 states and 834 transitions. [2022-01-10 06:21:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 91 [2022-01-10 06:21:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:42,555 INFO L225 Difference]: With dead ends: 551 [2022-01-10 06:21:42,556 INFO L226 Difference]: Without dead ends: 283 [2022-01-10 06:21:42,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 06:21:42,557 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 124 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1489 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 06:21:42,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1489 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-10 06:21:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-01-10 06:21:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 221 states have (on average 1.5339366515837105) internal successors, (339), 226 states have internal predecessors, (339), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2022-01-10 06:21:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 428 transitions. [2022-01-10 06:21:42,567 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 428 transitions. Word has length 91 [2022-01-10 06:21:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:42,568 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 428 transitions. [2022-01-10 06:21:42,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 428 transitions. [2022-01-10 06:21:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:21:42,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:42,569 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] [2022-01-10 06:21:42,595 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 06:21:42,770 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 06:21:42,770 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:42,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1001446877, now seen corresponding path program 1 times [2022-01-10 06:21:42,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:42,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378398505] [2022-01-10 06:21:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:42,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:42,772 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 06:21:42,774 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 06:21:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:42,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:21:42,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:43,069 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 06:21:43,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:43,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:43,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378398505] [2022-01-10 06:21:43,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378398505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:43,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:43,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:43,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646493014] [2022-01-10 06:21:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:43,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:43,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:43,073 INFO L87 Difference]: Start difference. First operand 283 states and 428 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:43,141 INFO L93 Difference]: Finished difference Result 543 states and 824 transitions. [2022-01-10 06:21:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:43,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2022-01-10 06:21:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:43,147 INFO L225 Difference]: With dead ends: 543 [2022-01-10 06:21:43,150 INFO L226 Difference]: Without dead ends: 283 [2022-01-10 06:21:43,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 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 06:21:43,156 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 123 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1503 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 06:21:43,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1503 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-10 06:21:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-01-10 06:21:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 221 states have (on average 1.5339366515837105) internal successors, (339), 226 states have internal predecessors, (339), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2022-01-10 06:21:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 427 transitions. [2022-01-10 06:21:43,173 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 427 transitions. Word has length 92 [2022-01-10 06:21:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:43,173 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 427 transitions. [2022-01-10 06:21:43,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 427 transitions. [2022-01-10 06:21:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:21:43,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:43,177 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] [2022-01-10 06:21:43,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 06:21:43,386 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 06:21:43,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1413622823, now seen corresponding path program 2 times [2022-01-10 06:21:43,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:43,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316120304] [2022-01-10 06:21:43,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:21:43,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:43,389 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 06:21:43,390 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 06:21:43,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:21:43,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:21:43,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:43,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:43,649 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 06:21:43,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:43,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316120304] [2022-01-10 06:21:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316120304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:43,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:43,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599850436] [2022-01-10 06:21:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:43,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:43,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:43,652 INFO L87 Difference]: Start difference. First operand 283 states and 427 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:43,666 INFO L93 Difference]: Finished difference Result 412 states and 606 transitions. [2022-01-10 06:21:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-01-10 06:21:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:43,668 INFO L225 Difference]: With dead ends: 412 [2022-01-10 06:21:43,668 INFO L226 Difference]: Without dead ends: 286 [2022-01-10 06:21:43,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 06:21:43,669 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 834 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 06:21:43,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 834 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-10 06:21:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-01-10 06:21:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 223 states have (on average 1.5291479820627802) internal successors, (341), 228 states have internal predecessors, (341), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2022-01-10 06:21:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 429 transitions. [2022-01-10 06:21:43,677 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 429 transitions. Word has length 93 [2022-01-10 06:21:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:43,677 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 429 transitions. [2022-01-10 06:21:43,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 429 transitions. [2022-01-10 06:21:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:21:43,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:43,678 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] [2022-01-10 06:21:43,689 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 06:21:43,886 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 06:21:43,887 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:43,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 779995117, now seen corresponding path program 1 times [2022-01-10 06:21:43,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:43,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338569432] [2022-01-10 06:21:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:43,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:43,889 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 06:21:43,890 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 06:21:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:44,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:21:44,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:44,226 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 06:21:44,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:44,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:44,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338569432] [2022-01-10 06:21:44,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338569432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:44,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:44,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:44,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113486743] [2022-01-10 06:21:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:44,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:44,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:44,228 INFO L87 Difference]: Start difference. First operand 285 states and 429 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:44,294 INFO L93 Difference]: Finished difference Result 549 states and 831 transitions. [2022-01-10 06:21:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:44,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2022-01-10 06:21:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:44,296 INFO L225 Difference]: With dead ends: 549 [2022-01-10 06:21:44,296 INFO L226 Difference]: Without dead ends: 287 [2022-01-10 06:21:44,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 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 06:21:44,297 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 121 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1505 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 06:21:44,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1505 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-10 06:21:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-01-10 06:21:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 224 states have (on average 1.5267857142857142) internal successors, (342), 230 states have internal predecessors, (342), 42 states have call successors, (42), 17 states have call predecessors, (42), 20 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2022-01-10 06:21:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 432 transitions. [2022-01-10 06:21:44,312 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 432 transitions. Word has length 102 [2022-01-10 06:21:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:44,312 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 432 transitions. [2022-01-10 06:21:44,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 432 transitions. [2022-01-10 06:21:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:21:44,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:44,314 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] [2022-01-10 06:21:44,329 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 06:21:44,516 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 06:21:44,517 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1768012008, now seen corresponding path program 1 times [2022-01-10 06:21:44,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:44,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115139340] [2022-01-10 06:21:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:44,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:44,519 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 06:21:44,520 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 06:21:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:44,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:44,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:44,807 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 06:21:44,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:44,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115139340] [2022-01-10 06:21:44,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115139340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:44,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:44,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:44,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875235806] [2022-01-10 06:21:44,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:44,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:44,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:44,809 INFO L87 Difference]: Start difference. First operand 287 states and 432 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:44,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:44,856 INFO L93 Difference]: Finished difference Result 547 states and 826 transitions. [2022-01-10 06:21:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2022-01-10 06:21:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:44,858 INFO L225 Difference]: With dead ends: 547 [2022-01-10 06:21:44,859 INFO L226 Difference]: Without dead ends: 287 [2022-01-10 06:21:44,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 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 06:21:44,860 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 122 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1492 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 06:21:44,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1492 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-10 06:21:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-01-10 06:21:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 224 states have (on average 1.5267857142857142) internal successors, (342), 230 states have internal predecessors, (342), 42 states have call successors, (42), 17 states have call predecessors, (42), 20 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2022-01-10 06:21:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 431 transitions. [2022-01-10 06:21:44,868 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 431 transitions. Word has length 103 [2022-01-10 06:21:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:44,868 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 431 transitions. [2022-01-10 06:21:44,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 431 transitions. [2022-01-10 06:21:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:21:44,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:44,869 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] [2022-01-10 06:21:44,881 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 06:21:45,075 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 06:21:45,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash -814966810, now seen corresponding path program 2 times [2022-01-10 06:21:45,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:45,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821382746] [2022-01-10 06:21:45,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:21:45,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:45,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:45,078 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 06:21:45,079 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 06:21:45,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:21:45,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:21:45,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:45,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:45,396 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 06:21:45,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:45,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821382746] [2022-01-10 06:21:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821382746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:45,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:45,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:45,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714278699] [2022-01-10 06:21:45,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:45,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:45,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:45,398 INFO L87 Difference]: Start difference. First operand 287 states and 431 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:45,460 INFO L93 Difference]: Finished difference Result 549 states and 831 transitions. [2022-01-10 06:21:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:45,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-01-10 06:21:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:45,462 INFO L225 Difference]: With dead ends: 549 [2022-01-10 06:21:45,462 INFO L226 Difference]: Without dead ends: 289 [2022-01-10 06:21:45,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 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 06:21:45,463 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 120 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1494 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 06:21:45,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1494 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-10 06:21:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-01-10 06:21:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 225 states have (on average 1.5244444444444445) internal successors, (343), 232 states have internal predecessors, (343), 42 states have call successors, (42), 17 states have call predecessors, (42), 21 states have return successors, (51), 41 states have call predecessors, (51), 41 states have call successors, (51) [2022-01-10 06:21:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 436 transitions. [2022-01-10 06:21:45,472 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 436 transitions. Word has length 104 [2022-01-10 06:21:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:45,473 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 436 transitions. [2022-01-10 06:21:45,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 436 transitions. [2022-01-10 06:21:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:21:45,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:45,474 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] [2022-01-10 06:21:45,486 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 06:21:45,684 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 06:21:45,684 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash -821445843, now seen corresponding path program 1 times [2022-01-10 06:21:45,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:45,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361226859] [2022-01-10 06:21:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:45,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:45,686 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 06:21:45,688 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 06:21:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:45,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:45,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:45,958 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 06:21:45,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:45,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361226859] [2022-01-10 06:21:45,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361226859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:45,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:45,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:45,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996597043] [2022-01-10 06:21:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:45,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:45,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:45,959 INFO L87 Difference]: Start difference. First operand 289 states and 436 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:45,976 INFO L93 Difference]: Finished difference Result 604 states and 925 transitions. [2022-01-10 06:21:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-01-10 06:21:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:45,978 INFO L225 Difference]: With dead ends: 604 [2022-01-10 06:21:45,978 INFO L226 Difference]: Without dead ends: 346 [2022-01-10 06:21:45,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 06:21:45,979 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 107 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 818 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 06:21:45,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 818 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-10 06:21:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 338. [2022-01-10 06:21:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 270 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2022-01-10 06:21:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 522 transitions. [2022-01-10 06:21:45,991 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 522 transitions. Word has length 105 [2022-01-10 06:21:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:45,992 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 522 transitions. [2022-01-10 06:21:45,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 522 transitions. [2022-01-10 06:21:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 06:21:45,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:45,993 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] [2022-01-10 06:21:46,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:46,202 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 06:21:46,202 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash -910356058, now seen corresponding path program 1 times [2022-01-10 06:21:46,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676654812] [2022-01-10 06:21:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:46,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:46,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:46,204 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 06:21:46,206 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 06:21:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:46,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:21:46,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:46,516 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 06:21:46,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:46,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:46,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676654812] [2022-01-10 06:21:46,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676654812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:46,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:46,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:21:46,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918373596] [2022-01-10 06:21:46,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:46,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:21:46,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:21:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:21:46,518 INFO L87 Difference]: Start difference. First operand 338 states and 522 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:46,599 INFO L93 Difference]: Finished difference Result 786 states and 1232 transitions. [2022-01-10 06:21:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:21:46,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-01-10 06:21:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:46,602 INFO L225 Difference]: With dead ends: 786 [2022-01-10 06:21:46,602 INFO L226 Difference]: Without dead ends: 477 [2022-01-10 06:21:46,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 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 06:21:46,603 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 497 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:46,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1011 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:21:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-10 06:21:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 346. [2022-01-10 06:21:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 270 states have (on average 1.5222222222222221) internal successors, (411), 276 states have internal predecessors, (411), 53 states have call successors, (53), 19 states have call predecessors, (53), 22 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2022-01-10 06:21:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 524 transitions. [2022-01-10 06:21:46,617 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 524 transitions. Word has length 106 [2022-01-10 06:21:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:46,618 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 524 transitions. [2022-01-10 06:21:46,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:21:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 524 transitions. [2022-01-10 06:21:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:21:46,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:46,620 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] [2022-01-10 06:21:46,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:46,829 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 06:21:46,830 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1733827256, now seen corresponding path program 1 times [2022-01-10 06:21:46,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:46,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268521773] [2022-01-10 06:21:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:46,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:46,832 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 06:21:46,837 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 06:21:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:46,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:47,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:47,147 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 06:21:47,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:47,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:47,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268521773] [2022-01-10 06:21:47,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268521773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:47,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:47,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:47,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502852388] [2022-01-10 06:21:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:47,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:47,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:47,149 INFO L87 Difference]: Start difference. First operand 346 states and 524 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:47,171 INFO L93 Difference]: Finished difference Result 772 states and 1206 transitions. [2022-01-10 06:21:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-01-10 06:21:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:47,174 INFO L225 Difference]: With dead ends: 772 [2022-01-10 06:21:47,174 INFO L226 Difference]: Without dead ends: 467 [2022-01-10 06:21:47,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 06:21:47,175 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 101 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 853 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 06:21:47,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 853 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-01-10 06:21:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-01-10 06:21:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 358 states have (on average 1.5558659217877095) internal successors, (557), 364 states have internal predecessors, (557), 78 states have call successors, (78), 19 states have call predecessors, (78), 22 states have return successors, (89), 77 states have call predecessors, (89), 77 states have call successors, (89) [2022-01-10 06:21:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 724 transitions. [2022-01-10 06:21:47,195 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 724 transitions. Word has length 107 [2022-01-10 06:21:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:47,196 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 724 transitions. [2022-01-10 06:21:47,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 724 transitions. [2022-01-10 06:21:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:21:47,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:47,197 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] [2022-01-10 06:21:47,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:21:47,406 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 06:21:47,406 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1286213372, now seen corresponding path program 1 times [2022-01-10 06:21:47,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:47,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730069025] [2022-01-10 06:21:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:47,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:47,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:47,408 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 06:21:47,410 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 06:21:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:47,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:21:47,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:47,696 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 06:21:47,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:21:47,871 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 06:21:47,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:47,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730069025] [2022-01-10 06:21:47,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730069025] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:21:47,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:21:47,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:21:47,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941243503] [2022-01-10 06:21:47,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:21:47,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:21:47,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:21:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:47,873 INFO L87 Difference]: Start difference. First operand 459 states and 724 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:21:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:48,080 INFO L93 Difference]: Finished difference Result 1119 states and 1816 transitions. [2022-01-10 06:21:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:21:48,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2022-01-10 06:21:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:48,085 INFO L225 Difference]: With dead ends: 1119 [2022-01-10 06:21:48,085 INFO L226 Difference]: Without dead ends: 993 [2022-01-10 06:21:48,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 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 06:21:48,087 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 576 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:48,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1860 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:21:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-01-10 06:21:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 969. [2022-01-10 06:21:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 765 states have (on average 1.5869281045751633) internal successors, (1214), 771 states have internal predecessors, (1214), 181 states have call successors, (181), 19 states have call predecessors, (181), 22 states have return successors, (208), 180 states have call predecessors, (208), 180 states have call successors, (208) [2022-01-10 06:21:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1603 transitions. [2022-01-10 06:21:48,138 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1603 transitions. Word has length 107 [2022-01-10 06:21:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:48,138 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1603 transitions. [2022-01-10 06:21:48,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:21:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1603 transitions. [2022-01-10 06:21:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:21:48,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:48,141 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] [2022-01-10 06:21:48,155 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 06:21:48,351 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 06:21:48,351 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:48,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1927251170, now seen corresponding path program 1 times [2022-01-10 06:21:48,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:48,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984722022] [2022-01-10 06:21:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:48,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:48,353 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 06:21:48,354 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 06:21:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:48,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:48,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:48,646 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 06:21:48,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:48,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:48,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984722022] [2022-01-10 06:21:48,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984722022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:48,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:48,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:48,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216386973] [2022-01-10 06:21:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:48,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:48,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:48,648 INFO L87 Difference]: Start difference. First operand 969 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:48,706 INFO L93 Difference]: Finished difference Result 2295 states and 3823 transitions. [2022-01-10 06:21:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-01-10 06:21:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:48,713 INFO L225 Difference]: With dead ends: 2295 [2022-01-10 06:21:48,713 INFO L226 Difference]: Without dead ends: 1465 [2022-01-10 06:21:48,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 06:21:48,718 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 99 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 840 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 06:21:48,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 840 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:48,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2022-01-10 06:21:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1457. [2022-01-10 06:21:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1158 states have (on average 1.5898100172711571) internal successors, (1841), 1164 states have internal predecessors, (1841), 276 states have call successors, (276), 19 states have call predecessors, (276), 22 states have return successors, (303), 275 states have call predecessors, (303), 275 states have call successors, (303) [2022-01-10 06:21:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2420 transitions. [2022-01-10 06:21:48,782 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2420 transitions. Word has length 110 [2022-01-10 06:21:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:48,782 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 2420 transitions. [2022-01-10 06:21:48,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2420 transitions. [2022-01-10 06:21:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:21:48,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:48,787 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] [2022-01-10 06:21:48,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:21:48,996 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 06:21:48,996 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1198171660, now seen corresponding path program 1 times [2022-01-10 06:21:48,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269758933] [2022-01-10 06:21:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:48,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:48,998 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 06:21:49,000 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 06:21:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:49,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:49,275 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 06:21:49,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:49,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:49,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269758933] [2022-01-10 06:21:49,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269758933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:49,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:49,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:49,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209321764] [2022-01-10 06:21:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:49,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:49,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:49,277 INFO L87 Difference]: Start difference. First operand 1457 states and 2420 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:49,357 INFO L93 Difference]: Finished difference Result 3386 states and 5674 transitions. [2022-01-10 06:21:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:49,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-01-10 06:21:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:49,366 INFO L225 Difference]: With dead ends: 3386 [2022-01-10 06:21:49,366 INFO L226 Difference]: Without dead ends: 2201 [2022-01-10 06:21:49,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 06:21:49,370 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 97 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 833 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 06:21:49,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 833 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2022-01-10 06:21:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2193. [2022-01-10 06:21:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1771 states have (on average 1.5923207227555054) internal successors, (2820), 1777 states have internal predecessors, (2820), 399 states have call successors, (399), 19 states have call predecessors, (399), 22 states have return successors, (442), 398 states have call predecessors, (442), 398 states have call successors, (442) [2022-01-10 06:21:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3661 transitions. [2022-01-10 06:21:49,470 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3661 transitions. Word has length 111 [2022-01-10 06:21:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:49,470 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3661 transitions. [2022-01-10 06:21:49,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3661 transitions. [2022-01-10 06:21:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:21:49,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:49,475 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] [2022-01-10 06:21:49,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 06:21:49,683 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 06:21:49,684 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -11914557, now seen corresponding path program 1 times [2022-01-10 06:21:49,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:49,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883197763] [2022-01-10 06:21:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:49,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:49,686 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 06:21:49,687 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 06:21:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:49,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:49,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:49,977 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 06:21:49,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:49,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:49,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883197763] [2022-01-10 06:21:49,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883197763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:49,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:49,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:49,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154121917] [2022-01-10 06:21:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:49,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:49,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:49,978 INFO L87 Difference]: Start difference. First operand 2193 states and 3661 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:50,108 INFO L93 Difference]: Finished difference Result 5077 states and 8543 transitions. [2022-01-10 06:21:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:50,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-01-10 06:21:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:50,120 INFO L225 Difference]: With dead ends: 5077 [2022-01-10 06:21:50,120 INFO L226 Difference]: Without dead ends: 3372 [2022-01-10 06:21:50,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 06:21:50,124 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 95 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 833 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 06:21:50,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 833 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2022-01-10 06:21:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3364. [2022-01-10 06:21:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2763 states have (on average 1.5935577271082157) internal successors, (4403), 2769 states have internal predecessors, (4403), 578 states have call successors, (578), 19 states have call predecessors, (578), 22 states have return successors, (647), 577 states have call predecessors, (647), 577 states have call successors, (647) [2022-01-10 06:21:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 5628 transitions. [2022-01-10 06:21:50,254 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 5628 transitions. Word has length 112 [2022-01-10 06:21:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:50,254 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 5628 transitions. [2022-01-10 06:21:50,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 5628 transitions. [2022-01-10 06:21:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:21:50,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:50,260 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 06:21:50,273 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 06:21:50,465 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 06:21:50,466 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1338141680, now seen corresponding path program 1 times [2022-01-10 06:21:50,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:50,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144396227] [2022-01-10 06:21:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:50,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:50,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:50,468 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 06:21:50,469 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 06:21:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:50,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:50,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:50,776 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 06:21:50,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:50,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:50,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144396227] [2022-01-10 06:21:50,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144396227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:50,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:50,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:50,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562412591] [2022-01-10 06:21:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:50,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:50,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:50,778 INFO L87 Difference]: Start difference. First operand 3364 states and 5628 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:51,000 INFO L93 Difference]: Finished difference Result 8119 states and 13666 transitions. [2022-01-10 06:21:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-01-10 06:21:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:51,023 INFO L225 Difference]: With dead ends: 8119 [2022-01-10 06:21:51,023 INFO L226 Difference]: Without dead ends: 5491 [2022-01-10 06:21:51,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 06:21:51,032 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 93 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 846 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 06:21:51,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 846 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2022-01-10 06:21:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5483. [2022-01-10 06:21:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 4506 states have (on average 1.585219707057257) internal successors, (7143), 4512 states have internal predecessors, (7143), 954 states have call successors, (954), 19 states have call predecessors, (954), 22 states have return successors, (1067), 953 states have call predecessors, (1067), 953 states have call successors, (1067) [2022-01-10 06:21:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 9164 transitions. [2022-01-10 06:21:51,344 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 9164 transitions. Word has length 113 [2022-01-10 06:21:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:51,345 INFO L470 AbstractCegarLoop]: Abstraction has 5483 states and 9164 transitions. [2022-01-10 06:21:51,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 9164 transitions. [2022-01-10 06:21:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:21:51,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:51,353 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] [2022-01-10 06:21:51,365 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 06:21:51,562 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 06:21:51,562 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1037167815, now seen corresponding path program 1 times [2022-01-10 06:21:51,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:51,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346340642] [2022-01-10 06:21:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:51,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:51,564 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 06:21:51,565 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 06:21:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:51,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:51,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:51,878 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 06:21:51,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:51,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:51,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346340642] [2022-01-10 06:21:51,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346340642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:51,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:51,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:51,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678464781] [2022-01-10 06:21:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:51,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:51,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:51,879 INFO L87 Difference]: Start difference. First operand 5483 states and 9164 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:52,190 INFO L93 Difference]: Finished difference Result 13485 states and 22688 transitions. [2022-01-10 06:21:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:52,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-01-10 06:21:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:52,252 INFO L225 Difference]: With dead ends: 13485 [2022-01-10 06:21:52,252 INFO L226 Difference]: Without dead ends: 9135 [2022-01-10 06:21:52,270 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 06:21:52,271 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 91 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 838 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 06:21:52,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 838 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2022-01-10 06:21:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 9127. [2022-01-10 06:21:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9127 states, 7544 states have (on average 1.5817868504772004) internal successors, (11933), 7550 states have internal predecessors, (11933), 1560 states have call successors, (1560), 19 states have call predecessors, (1560), 22 states have return successors, (1751), 1559 states have call predecessors, (1751), 1559 states have call successors, (1751) [2022-01-10 06:21:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9127 states to 9127 states and 15244 transitions. [2022-01-10 06:21:52,717 INFO L78 Accepts]: Start accepts. Automaton has 9127 states and 15244 transitions. Word has length 114 [2022-01-10 06:21:52,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:52,717 INFO L470 AbstractCegarLoop]: Abstraction has 9127 states and 15244 transitions. [2022-01-10 06:21:52,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 9127 states and 15244 transitions. [2022-01-10 06:21:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:21:52,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:52,730 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] [2022-01-10 06:21:52,741 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 06:21:52,939 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 06:21:52,939 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2075641934, now seen corresponding path program 1 times [2022-01-10 06:21:52,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:52,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999351629] [2022-01-10 06:21:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:52,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:52,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:52,941 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 06:21:52,943 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 06:21:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:53,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:53,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:53,269 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 06:21:53,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:53,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999351629] [2022-01-10 06:21:53,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999351629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:53,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:53,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365834965] [2022-01-10 06:21:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:53,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:53,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:53,270 INFO L87 Difference]: Start difference. First operand 9127 states and 15244 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:53,826 INFO L93 Difference]: Finished difference Result 23564 states and 39533 transitions. [2022-01-10 06:21:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-01-10 06:21:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:53,878 INFO L225 Difference]: With dead ends: 23564 [2022-01-10 06:21:53,878 INFO L226 Difference]: Without dead ends: 16016 [2022-01-10 06:21:53,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 06:21:53,901 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 89 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 849 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 06:21:53,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 849 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16016 states. [2022-01-10 06:21:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16016 to 16008. [2022-01-10 06:21:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16008 states, 13222 states have (on average 1.5721524731508092) internal successors, (20787), 13228 states have internal predecessors, (20787), 2763 states have call successors, (2763), 19 states have call predecessors, (2763), 22 states have return successors, (3098), 2762 states have call predecessors, (3098), 2762 states have call successors, (3098) [2022-01-10 06:21:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16008 states to 16008 states and 26648 transitions. [2022-01-10 06:21:54,675 INFO L78 Accepts]: Start accepts. Automaton has 16008 states and 26648 transitions. Word has length 115 [2022-01-10 06:21:54,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:54,675 INFO L470 AbstractCegarLoop]: Abstraction has 16008 states and 26648 transitions. [2022-01-10 06:21:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 16008 states and 26648 transitions. [2022-01-10 06:21:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:21:54,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:54,691 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] [2022-01-10 06:21:54,702 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 06:21:54,904 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 06:21:54,905 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:54,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1868804536, now seen corresponding path program 1 times [2022-01-10 06:21:54,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:54,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736035774] [2022-01-10 06:21:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:54,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:54,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:54,907 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 06:21:54,909 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 06:21:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:55,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:55,187 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 06:21:55,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:55,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736035774] [2022-01-10 06:21:55,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736035774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:55,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:55,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:55,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771395127] [2022-01-10 06:21:55,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:55,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:55,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:55,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:55,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:55,189 INFO L87 Difference]: Start difference. First operand 16008 states and 26648 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:56,313 INFO L93 Difference]: Finished difference Result 42328 states and 70784 transitions. [2022-01-10 06:21:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-01-10 06:21:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:56,413 INFO L225 Difference]: With dead ends: 42328 [2022-01-10 06:21:56,413 INFO L226 Difference]: Without dead ends: 28534 [2022-01-10 06:21:56,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 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 06:21:56,450 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 87 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 838 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 06:21:56,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 838 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28534 states. [2022-01-10 06:21:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28534 to 28526. [2022-01-10 06:21:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28526 states, 23701 states have (on average 1.5671490654402769) internal successors, (37143), 23707 states have internal predecessors, (37143), 4802 states have call successors, (4802), 19 states have call predecessors, (4802), 22 states have return successors, (5411), 4801 states have call predecessors, (5411), 4801 states have call successors, (5411) [2022-01-10 06:21:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28526 states to 28526 states and 47356 transitions. [2022-01-10 06:21:57,809 INFO L78 Accepts]: Start accepts. Automaton has 28526 states and 47356 transitions. Word has length 116 [2022-01-10 06:21:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:57,809 INFO L470 AbstractCegarLoop]: Abstraction has 28526 states and 47356 transitions. [2022-01-10 06:21:57,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:21:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 28526 states and 47356 transitions. [2022-01-10 06:21:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:21:57,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:57,829 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] [2022-01-10 06:21:57,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:58,038 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 06:21:58,038 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash -344224812, now seen corresponding path program 1 times [2022-01-10 06:21:58,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:58,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457844839] [2022-01-10 06:21:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:58,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:58,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:58,040 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 06:21:58,045 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 06:21:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:58,316 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 06:21:58,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:58,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:58,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457844839] [2022-01-10 06:21:58,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457844839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:58,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:58,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:58,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561429786] [2022-01-10 06:21:58,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:58,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:58,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:58,318 INFO L87 Difference]: Start difference. First operand 28526 states and 47356 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:22:00,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:22:00,368 INFO L93 Difference]: Finished difference Result 77695 states and 129431 transitions. [2022-01-10 06:22:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:22:00,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2022-01-10 06:22:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:22:00,567 INFO L225 Difference]: With dead ends: 77695 [2022-01-10 06:22:00,567 INFO L226 Difference]: Without dead ends: 52147 [2022-01-10 06:22:00,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 06:22:00,633 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 85 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 839 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 06:22:00,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 839 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:22:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52147 states. [2022-01-10 06:22:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52147 to 52139. [2022-01-10 06:22:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52139 states, 43599 states have (on average 1.5607697424252849) internal successors, (68048), 43605 states have internal predecessors, (68048), 8517 states have call successors, (8517), 19 states have call predecessors, (8517), 22 states have return successors, (9658), 8516 states have call predecessors, (9658), 8516 states have call successors, (9658) [2022-01-10 06:22:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52139 states to 52139 states and 86223 transitions. [2022-01-10 06:22:03,394 INFO L78 Accepts]: Start accepts. Automaton has 52139 states and 86223 transitions. Word has length 117 [2022-01-10 06:22:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:22:03,394 INFO L470 AbstractCegarLoop]: Abstraction has 52139 states and 86223 transitions. [2022-01-10 06:22:03,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:22:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 52139 states and 86223 transitions. [2022-01-10 06:22:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:22:03,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:22:03,414 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] [2022-01-10 06:22:03,425 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 06:22:03,623 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 06:22:03,623 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:22:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:22:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash 469761576, now seen corresponding path program 1 times [2022-01-10 06:22:03,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:22:03,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947794834] [2022-01-10 06:22:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:22:03,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:22:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:22:03,625 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 06:22:03,626 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 06:22:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:22:03,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:22:03,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:22:03,926 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 06:22:03,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:22:03,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:22:03,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947794834] [2022-01-10 06:22:03,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947794834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:22:03,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:22:03,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:22:03,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236594185] [2022-01-10 06:22:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:22:03,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:22:03,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:22:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:22:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:22:03,928 INFO L87 Difference]: Start difference. First operand 52139 states and 86223 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:22:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:22:07,283 INFO L93 Difference]: Finished difference Result 97209 states and 161021 transitions. [2022-01-10 06:22:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:22:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2022-01-10 06:22:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:22:07,598 INFO L225 Difference]: With dead ends: 97209 [2022-01-10 06:22:07,598 INFO L226 Difference]: Without dead ends: 97083 [2022-01-10 06:22:07,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 06:22:07,639 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 83 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 838 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 06:22:07,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 838 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:22:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97083 states. [2022-01-10 06:22:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97083 to 97075. [2022-01-10 06:22:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97075 states, 81736 states have (on average 1.5528775570128217) internal successors, (126926), 81742 states have internal predecessors, (126926), 15316 states have call successors, (15316), 19 states have call predecessors, (15316), 22 states have return successors, (17503), 15315 states have call predecessors, (17503), 15315 states have call successors, (17503) [2022-01-10 06:22:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97075 states to 97075 states and 159745 transitions. [2022-01-10 06:22:12,389 INFO L78 Accepts]: Start accepts. Automaton has 97075 states and 159745 transitions. Word has length 118 [2022-01-10 06:22:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:22:12,389 INFO L470 AbstractCegarLoop]: Abstraction has 97075 states and 159745 transitions. [2022-01-10 06:22:12,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:22:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 97075 states and 159745 transitions. [2022-01-10 06:22:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 06:22:12,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:22:12,415 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] [2022-01-10 06:22:12,427 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 06:22:12,625 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 06:22:12,625 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:22:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:22:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2119225901, now seen corresponding path program 1 times [2022-01-10 06:22:12,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:22:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615629547] [2022-01-10 06:22:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:22:12,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:22:12,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:22:12,627 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 06:22:12,629 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 06:22:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:22:12,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:22:12,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:22:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:22:13,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:22:13,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:22:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615629547] [2022-01-10 06:22:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615629547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:22:13,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:22:13,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:22:13,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825832400] [2022-01-10 06:22:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:22:13,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:22:13,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:22:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:22:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:22:13,257 INFO L87 Difference]: Start difference. First operand 97075 states and 159745 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 06:22:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:22:21,169 INFO L93 Difference]: Finished difference Result 193475 states and 323904 transitions. [2022-01-10 06:22:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:22:21,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2022-01-10 06:22:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:22:22,149 INFO L225 Difference]: With dead ends: 193475 [2022-01-10 06:22:22,149 INFO L226 Difference]: Without dead ends: 193357 [2022-01-10 06:22:22,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:22:22,247 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1239 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:22:22,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 4052 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 06:22:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193357 states. [2022-01-10 06:22:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193357 to 193338. [2022-01-10 06:22:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193338 states, 162857 states have (on average 1.5538539946087673) internal successors, (253056), 162762 states have internal predecessors, (253056), 30429 states have call successors, (30429), 44 states have call predecessors, (30429), 51 states have return successors, (38085), 30539 states have call predecessors, (38085), 30426 states have call successors, (38085) [2022-01-10 06:22:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193338 states to 193338 states and 321570 transitions. [2022-01-10 06:22:32,759 INFO L78 Accepts]: Start accepts. Automaton has 193338 states and 321570 transitions. Word has length 119 [2022-01-10 06:22:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:22:32,759 INFO L470 AbstractCegarLoop]: Abstraction has 193338 states and 321570 transitions. [2022-01-10 06:22:32,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 06:22:32,759 INFO L276 IsEmpty]: Start isEmpty. Operand 193338 states and 321570 transitions. [2022-01-10 06:22:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:22:32,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:22:32,792 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] [2022-01-10 06:22:32,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:22:33,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:22:33,001 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:22:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:22:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 324516071, now seen corresponding path program 1 times [2022-01-10 06:22:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:22:33,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146183867] [2022-01-10 06:22:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:22:33,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:22:33,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:22:33,004 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:22:33,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:22:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:22:33,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:22:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:22:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:22:33,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:22:33,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:22:33,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146183867] [2022-01-10 06:22:33,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146183867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:22:33,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:22:33,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:22:33,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465458548] [2022-01-10 06:22:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:22:33,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:22:33,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:22:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:22:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:22:33,326 INFO L87 Difference]: Start difference. First operand 193338 states and 321570 transitions. Second operand has 9 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-01-10 06:22:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:22:40,209 INFO L93 Difference]: Finished difference Result 193977 states and 322517 transitions. [2022-01-10 06:22:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:22:40,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 120 [2022-01-10 06:22:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:22:40,994 INFO L225 Difference]: With dead ends: 193977 [2022-01-10 06:22:40,994 INFO L226 Difference]: Without dead ends: 193393 [2022-01-10 06:22:41,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:22:41,082 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 175 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:22:41,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 3296 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:22:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193393 states.