/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_spec27_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:23:52,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:23:52,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:23:52,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:23:52,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:23:52,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:23:52,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:23:52,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:23:53,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:23:53,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:23:53,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:23:53,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:23:53,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:23:53,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:23:53,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:23:53,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:23:53,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:23:53,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:23:53,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:23:53,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:23:53,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:23:53,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:23:53,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:23:53,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:23:53,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:23:53,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:23:53,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:23:53,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:23:53,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:23:53,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:23:53,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:23:53,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:23:53,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:23:53,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:23:53,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:23:53,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:23:53,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:23:53,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:23:53,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:23:53,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:23:53,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:23:53,058 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 06:23:53,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:23:53,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:23:53,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:23:53,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:23:53,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:23:53,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:23:53,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:23:53,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:23:53,085 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:23:53,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:23:53,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:23:53,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:23:53,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:23:53,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:23:53,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:23:53,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:23:53,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:23:53,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:23:53,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:23:53,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:23:53,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:23:53,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:23:53,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:23:53,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:23:53,296 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:23:53,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_productSimulator.cil.c [2022-01-10 06:23:53,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae8e9c96/ee26f06be22b4352b9bb64b34a65d421/FLAGc67d9acf1 [2022-01-10 06:23:53,800 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:23:53,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_productSimulator.cil.c [2022-01-10 06:23:53,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae8e9c96/ee26f06be22b4352b9bb64b34a65d421/FLAGc67d9acf1 [2022-01-10 06:23:54,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae8e9c96/ee26f06be22b4352b9bb64b34a65d421 [2022-01-10 06:23:54,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:23:54,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:23:54,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:23:54,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:23:54,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:23:54,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adea6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54, skipping insertion in model container [2022-01-10 06:23:54,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:23:54,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:23:54,327 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_spec27_productSimulator.cil.c[11237,11250] [2022-01-10 06:23:54,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:23:54,510 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:23:54,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:23:54,569 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_spec27_productSimulator.cil.c[11237,11250] [2022-01-10 06:23:54,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:23:54,668 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:23:54,696 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_spec27_productSimulator.cil.c[11237,11250] [2022-01-10 06:23:54,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:23:54,793 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:23:54,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54 WrapperNode [2022-01-10 06:23:54,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:23:54,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:23:54,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:23:54,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:23:54,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,914 INFO L137 Inliner]: procedures = 153, calls = 284, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1227 [2022-01-10 06:23:54,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:23:54,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:23:54,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:23:54,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:23:54,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:54,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:55,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:55,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:23:55,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:23:55,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:23:55,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:23:55,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (1/1) ... [2022-01-10 06:23:55,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:23:55,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:23:55,080 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 06:23:55,083 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 06:23:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:23:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:23:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-01-10 06:23:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-01-10 06:23:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-01-10 06:23:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-01-10 06:23:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-01-10 06:23:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-01-10 06:23:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:23:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:23:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-01-10 06:23:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-01-10 06:23:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:23:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:23:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-01-10 06:23:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-01-10 06:23:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:23:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:23:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-01-10 06:23:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-01-10 06:23:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:23:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:23:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:23:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:23:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:23:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:23:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-01-10 06:23:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-01-10 06:23:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-01-10 06:23:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-01-10 06:23:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:23:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:23:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:23:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:23:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:23:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:23:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:23:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-01-10 06:23:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-01-10 06:23:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:23:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:23:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-01-10 06:23:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-01-10 06:23:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:23:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:23:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-01-10 06:23:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-01-10 06:23:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:23:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:23:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:23:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:23:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:23:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-01-10 06:23:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-01-10 06:23:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-01-10 06:23:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-01-10 06:23:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-01-10 06:23:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-01-10 06:23:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-01-10 06:23:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:23:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:23:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:23:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-01-10 06:23:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:23:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:23:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:23:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:23:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-01-10 06:23:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-01-10 06:23:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-01-10 06:23:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-01-10 06:23:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-01-10 06:23:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-01-10 06:23:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:23:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:23:55,394 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:23:55,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:23:56,046 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:23:56,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:23:56,055 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:23:56,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:23:56 BoogieIcfgContainer [2022-01-10 06:23:56,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:23:56,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:23:56,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:23:56,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:23:56,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:23:54" (1/3) ... [2022-01-10 06:23:56,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c043509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:23:56, skipping insertion in model container [2022-01-10 06:23:56,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:54" (2/3) ... [2022-01-10 06:23:56,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c043509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:23:56, skipping insertion in model container [2022-01-10 06:23:56,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:23:56" (3/3) ... [2022-01-10 06:23:56,063 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_productSimulator.cil.c [2022-01-10 06:23:56,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:23:56,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:23:56,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:23:56,105 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 06:23:56,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:23:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 608 states, 450 states have (on average 1.5133333333333334) internal successors, (681), 470 states have internal predecessors, (681), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-01-10 06:23:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 06:23:56,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:56,147 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:56,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:23:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:23:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash -779208577, now seen corresponding path program 1 times [2022-01-10 06:23:56,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:23:56,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099707305] [2022-01-10 06:23:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:23:56,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:23:56,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:23:56,169 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 06:23:56,174 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 06:23:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:23:56,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:23:56,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:23:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-10 06:23:56,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:23:56,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:23:56,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099707305] [2022-01-10 06:23:56,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099707305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:23:56,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:23:56,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:23:56,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735780853] [2022-01-10 06:23:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:23:56,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:23:56,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:23:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:23:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:23:56,900 INFO L87 Difference]: Start difference. First operand has 608 states, 450 states have (on average 1.5133333333333334) internal successors, (681), 470 states have internal predecessors, (681), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:23:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:23:56,979 INFO L93 Difference]: Finished difference Result 947 states and 1397 transitions. [2022-01-10 06:23:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:23:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2022-01-10 06:23:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:23:56,997 INFO L225 Difference]: With dead ends: 947 [2022-01-10 06:23:56,998 INFO L226 Difference]: Without dead ends: 601 [2022-01-10 06:23:57,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 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 06:23:57,007 INFO L933 BasicCegarLoop]: 901 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, 901 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 06:23:57,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:23:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-10 06:23:57,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-01-10 06:23:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 444 states have (on average 1.509009009009009) internal successors, (670), 463 states have internal predecessors, (670), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-01-10 06:23:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 893 transitions. [2022-01-10 06:23:57,077 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 893 transitions. Word has length 158 [2022-01-10 06:23:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:23:57,078 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 893 transitions. [2022-01-10 06:23:57,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:23:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 893 transitions. [2022-01-10 06:23:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 06:23:57,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:57,084 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:57,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:23:57,295 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 06:23:57,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:23:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:23:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1365806895, now seen corresponding path program 1 times [2022-01-10 06:23:57,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:23:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443931687] [2022-01-10 06:23:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:23:57,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:23:57,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:23:57,300 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 06:23:57,301 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 06:23:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:23:57,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:23:57,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:23:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-10 06:23:57,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:23:57,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:23:57,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443931687] [2022-01-10 06:23:57,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443931687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:23:57,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:23:57,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:23:57,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568112363] [2022-01-10 06:23:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:23:57,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:23:57,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:23:57,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:23:57,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:23:57,827 INFO L87 Difference]: Start difference. First operand 601 states and 893 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:23:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:23:57,882 INFO L93 Difference]: Finished difference Result 1166 states and 1730 transitions. [2022-01-10 06:23:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:23:57,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2022-01-10 06:23:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:23:57,885 INFO L225 Difference]: With dead ends: 1166 [2022-01-10 06:23:57,886 INFO L226 Difference]: Without dead ends: 601 [2022-01-10 06:23:57,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:23:57,888 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 3 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:23:57,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3553 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:23:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-10 06:23:57,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-01-10 06:23:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 444 states have (on average 1.4932432432432432) internal successors, (663), 463 states have internal predecessors, (663), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-01-10 06:23:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 886 transitions. [2022-01-10 06:23:57,906 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 886 transitions. Word has length 159 [2022-01-10 06:23:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:23:57,906 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 886 transitions. [2022-01-10 06:23:57,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:23:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 886 transitions. [2022-01-10 06:23:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 06:23:57,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:57,909 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:57,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 06:23:58,121 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 06:23:58,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:23:58,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:23:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1433975483, now seen corresponding path program 1 times [2022-01-10 06:23:58,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:23:58,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416379356] [2022-01-10 06:23:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:23:58,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:23:58,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:23:58,125 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 06:23:58,127 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 06:23:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:23:58,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:23:58,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:23:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-01-10 06:23:58,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:23:58,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:23:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416379356] [2022-01-10 06:23:58,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416379356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:23:58,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:23:58,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:23:58,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503624583] [2022-01-10 06:23:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:23:58,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:23:58,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:23:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:23:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:23:58,752 INFO L87 Difference]: Start difference. First operand 601 states and 886 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:23:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:23:58,803 INFO L93 Difference]: Finished difference Result 1170 states and 1738 transitions. [2022-01-10 06:23:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:23:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 164 [2022-01-10 06:23:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:23:58,811 INFO L225 Difference]: With dead ends: 1170 [2022-01-10 06:23:58,811 INFO L226 Difference]: Without dead ends: 602 [2022-01-10 06:23:58,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 06:23:58,814 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 770 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:23:58,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 901 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:23:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-01-10 06:23:58,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-01-10 06:23:58,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 446 states have (on average 1.484304932735426) internal successors, (662), 463 states have internal predecessors, (662), 110 states have call successors, (110), 45 states have call predecessors, (110), 45 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-01-10 06:23:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 881 transitions. [2022-01-10 06:23:58,830 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 881 transitions. Word has length 164 [2022-01-10 06:23:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:23:58,830 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 881 transitions. [2022-01-10 06:23:58,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:23:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 881 transitions. [2022-01-10 06:23:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 06:23:58,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:58,833 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:58,859 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 06:23:59,045 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 06:23:59,045 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:23:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:23:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 858043398, now seen corresponding path program 1 times [2022-01-10 06:23:59,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:23:59,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222283635] [2022-01-10 06:23:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:23:59,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:23:59,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:23:59,047 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 06:23:59,049 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 06:23:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:23:59,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:23:59,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:23:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-10 06:23:59,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:23:59,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:23:59,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222283635] [2022-01-10 06:23:59,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222283635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:23:59,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:23:59,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:23:59,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342488611] [2022-01-10 06:23:59,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:23:59,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:23:59,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:23:59,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:23:59,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:23:59,596 INFO L87 Difference]: Start difference. First operand 602 states and 881 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-01-10 06:23:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:23:59,654 INFO L93 Difference]: Finished difference Result 1718 states and 2550 transitions. [2022-01-10 06:23:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:23:59,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 185 [2022-01-10 06:23:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:23:59,659 INFO L225 Difference]: With dead ends: 1718 [2022-01-10 06:23:59,660 INFO L226 Difference]: Without dead ends: 1150 [2022-01-10 06:23:59,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 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 06:23:59,662 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 837 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:23:59,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1843 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:23:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-01-10 06:23:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1148. [2022-01-10 06:23:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 853 states have (on average 1.4912075029308323) internal successors, (1272), 883 states have internal predecessors, (1272), 205 states have call successors, (205), 89 states have call predecessors, (205), 89 states have return successors, (216), 202 states have call predecessors, (216), 203 states have call successors, (216) [2022-01-10 06:23:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1693 transitions. [2022-01-10 06:23:59,693 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1693 transitions. Word has length 185 [2022-01-10 06:23:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:23:59,694 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1693 transitions. [2022-01-10 06:23:59,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-01-10 06:23:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1693 transitions. [2022-01-10 06:23:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 06:23:59,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:59,697 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:59,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:23:59,911 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 06:23:59,912 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:23:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:23:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1324879713, now seen corresponding path program 1 times [2022-01-10 06:23:59,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:23:59,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62977057] [2022-01-10 06:23:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:23:59,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:23:59,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:23:59,914 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 06:23:59,916 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 06:24:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:00,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:00,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-01-10 06:24:00,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:00,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62977057] [2022-01-10 06:24:00,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62977057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:00,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:00,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:00,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895159363] [2022-01-10 06:24:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:00,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:00,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:00,502 INFO L87 Difference]: Start difference. First operand 1148 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-01-10 06:24:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:00,535 INFO L93 Difference]: Finished difference Result 1150 states and 1694 transitions. [2022-01-10 06:24:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:00,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 186 [2022-01-10 06:24:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:00,538 INFO L225 Difference]: With dead ends: 1150 [2022-01-10 06:24:00,538 INFO L226 Difference]: Without dead ends: 603 [2022-01-10 06:24:00,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 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 06:24:00,540 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 777 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:00,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 904 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-01-10 06:24:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2022-01-10 06:24:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 448 states have (on average 1.4732142857142858) internal successors, (660), 463 states have internal predecessors, (660), 108 states have call successors, (108), 46 states have call predecessors, (108), 46 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-01-10 06:24:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 875 transitions. [2022-01-10 06:24:00,553 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 875 transitions. Word has length 186 [2022-01-10 06:24:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:00,553 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 875 transitions. [2022-01-10 06:24:00,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-01-10 06:24:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 875 transitions. [2022-01-10 06:24:00,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-10 06:24:00,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:00,555 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:00,571 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 06:24:00,771 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 06:24:00,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2046699704, now seen corresponding path program 1 times [2022-01-10 06:24:00,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:00,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709679880] [2022-01-10 06:24:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:00,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:00,777 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 06:24:00,778 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 06:24:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:01,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:01,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 06:24:01,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:01,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:01,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709679880] [2022-01-10 06:24:01,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709679880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:01,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:01,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:01,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154253979] [2022-01-10 06:24:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:01,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:01,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:01,357 INFO L87 Difference]: Start difference. First operand 603 states and 875 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-01-10 06:24:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:01,401 INFO L93 Difference]: Finished difference Result 1160 states and 1690 transitions. [2022-01-10 06:24:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-01-10 06:24:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:01,404 INFO L225 Difference]: With dead ends: 1160 [2022-01-10 06:24:01,404 INFO L226 Difference]: Without dead ends: 606 [2022-01-10 06:24:01,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 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 06:24:01,406 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 810 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:01,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 889 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-01-10 06:24:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 600. [2022-01-10 06:24:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 448 states have (on average 1.4486607142857142) internal successors, (649), 458 states have internal predecessors, (649), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-01-10 06:24:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 858 transitions. [2022-01-10 06:24:01,420 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 858 transitions. Word has length 195 [2022-01-10 06:24:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:01,420 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 858 transitions. [2022-01-10 06:24:01,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-01-10 06:24:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 858 transitions. [2022-01-10 06:24:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-10 06:24:01,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:01,422 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:01,436 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 06:24:01,636 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 06:24:01,637 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:01,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1564832135, now seen corresponding path program 1 times [2022-01-10 06:24:01,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:01,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421713488] [2022-01-10 06:24:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:01,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:01,639 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 06:24:01,640 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 06:24:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:01,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:24:01,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-01-10 06:24:02,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:02,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:02,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421713488] [2022-01-10 06:24:02,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421713488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:02,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:02,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:24:02,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856112556] [2022-01-10 06:24:02,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:02,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:24:02,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:24:02,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:24:02,314 INFO L87 Difference]: Start difference. First operand 600 states and 858 transitions. Second operand has 8 states, 6 states have (on average 20.5) internal successors, (123), 8 states have internal predecessors, (123), 4 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-01-10 06:24:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:02,468 INFO L93 Difference]: Finished difference Result 1144 states and 1651 transitions. [2022-01-10 06:24:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:24:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 20.5) internal successors, (123), 8 states have internal predecessors, (123), 4 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 206 [2022-01-10 06:24:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:02,472 INFO L225 Difference]: With dead ends: 1144 [2022-01-10 06:24:02,472 INFO L226 Difference]: Without dead ends: 602 [2022-01-10 06:24:02,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:24:02,474 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 363 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:02,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5492 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-01-10 06:24:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-01-10 06:24:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 449 states have (on average 1.447661469933185) internal successors, (650), 460 states have internal predecessors, (650), 105 states have call successors, (105), 46 states have call predecessors, (105), 47 states have return successors, (106), 103 states have call predecessors, (106), 104 states have call successors, (106) [2022-01-10 06:24:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 861 transitions. [2022-01-10 06:24:02,494 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 861 transitions. Word has length 206 [2022-01-10 06:24:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:02,495 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 861 transitions. [2022-01-10 06:24:02,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 20.5) internal successors, (123), 8 states have internal predecessors, (123), 4 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-01-10 06:24:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 861 transitions. [2022-01-10 06:24:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 06:24:02,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:02,497 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:02,509 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 06:24:02,709 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 06:24:02,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1162365900, now seen corresponding path program 1 times [2022-01-10 06:24:02,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:02,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398579339] [2022-01-10 06:24:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:02,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:02,715 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 06:24:02,716 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 06:24:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:03,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:03,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-01-10 06:24:03,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:03,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:03,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398579339] [2022-01-10 06:24:03,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398579339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:03,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:03,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:24:03,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184113686] [2022-01-10 06:24:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:03,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:24:03,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:24:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:03,332 INFO L87 Difference]: Start difference. First operand 602 states and 861 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-01-10 06:24:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:03,464 INFO L93 Difference]: Finished difference Result 1145 states and 1654 transitions. [2022-01-10 06:24:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:24:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 207 [2022-01-10 06:24:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:03,467 INFO L225 Difference]: With dead ends: 1145 [2022-01-10 06:24:03,467 INFO L226 Difference]: Without dead ends: 604 [2022-01-10 06:24:03,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:24:03,469 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 361 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3806 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:03,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3806 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-10 06:24:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-01-10 06:24:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 450 states have (on average 1.4466666666666668) internal successors, (651), 462 states have internal predecessors, (651), 105 states have call successors, (105), 46 states have call predecessors, (105), 48 states have return successors, (110), 103 states have call predecessors, (110), 104 states have call successors, (110) [2022-01-10 06:24:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 866 transitions. [2022-01-10 06:24:03,484 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 866 transitions. Word has length 207 [2022-01-10 06:24:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:03,484 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 866 transitions. [2022-01-10 06:24:03,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-01-10 06:24:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 866 transitions. [2022-01-10 06:24:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 06:24:03,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:03,486 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:03,511 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 06:24:03,699 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 06:24:03,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1829372163, now seen corresponding path program 1 times [2022-01-10 06:24:03,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:03,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496829072] [2022-01-10 06:24:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:03,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:03,719 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 06:24:03,720 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 06:24:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:04,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:24:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 06:24:04,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:04,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496829072] [2022-01-10 06:24:04,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496829072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:04,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:24:04,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053627040] [2022-01-10 06:24:04,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:04,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:24:04,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:24:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:24:04,340 INFO L87 Difference]: Start difference. First operand 604 states and 866 transitions. Second operand has 8 states, 6 states have (on average 21.0) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-01-10 06:24:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:04,485 INFO L93 Difference]: Finished difference Result 1133 states and 1640 transitions. [2022-01-10 06:24:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:24:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 21.0) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 215 [2022-01-10 06:24:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:04,488 INFO L225 Difference]: With dead ends: 1133 [2022-01-10 06:24:04,489 INFO L226 Difference]: Without dead ends: 604 [2022-01-10 06:24:04,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:24:04,490 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 357 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 5502 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:04,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 5502 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-10 06:24:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-01-10 06:24:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 450 states have (on average 1.4466666666666668) internal successors, (651), 462 states have internal predecessors, (651), 105 states have call successors, (105), 46 states have call predecessors, (105), 48 states have return successors, (109), 103 states have call predecessors, (109), 104 states have call successors, (109) [2022-01-10 06:24:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 865 transitions. [2022-01-10 06:24:04,506 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 865 transitions. Word has length 215 [2022-01-10 06:24:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:04,506 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 865 transitions. [2022-01-10 06:24:04,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 21.0) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-01-10 06:24:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 865 transitions. [2022-01-10 06:24:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 06:24:04,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:04,509 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:04,529 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 06:24:04,721 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 06:24:04,721 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:04,722 INFO L85 PathProgramCache]: Analyzing trace with hash 173701944, now seen corresponding path program 1 times [2022-01-10 06:24:04,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:04,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971388562] [2022-01-10 06:24:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:04,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:04,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:04,723 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 06:24:04,763 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 06:24:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:04,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:24:05,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-10 06:24:05,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:05,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:05,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971388562] [2022-01-10 06:24:05,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971388562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:05,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:05,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:24:05,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381253928] [2022-01-10 06:24:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:05,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:24:05,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:05,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:24:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:24:05,268 INFO L87 Difference]: Start difference. First operand 604 states and 865 transitions. Second operand has 8 states, 6 states have (on average 20.833333333333332) internal successors, (125), 8 states have internal predecessors, (125), 4 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-01-10 06:24:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:05,409 INFO L93 Difference]: Finished difference Result 1135 states and 1643 transitions. [2022-01-10 06:24:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:24:05,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 20.833333333333332) internal successors, (125), 8 states have internal predecessors, (125), 4 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 209 [2022-01-10 06:24:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:05,412 INFO L225 Difference]: With dead ends: 1135 [2022-01-10 06:24:05,412 INFO L226 Difference]: Without dead ends: 606 [2022-01-10 06:24:05,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:24:05,414 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 355 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 5507 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:05,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 5507 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-01-10 06:24:05,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2022-01-10 06:24:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 451 states have (on average 1.4456762749445675) internal successors, (652), 464 states have internal predecessors, (652), 105 states have call successors, (105), 46 states have call predecessors, (105), 49 states have return successors, (111), 103 states have call predecessors, (111), 104 states have call successors, (111) [2022-01-10 06:24:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 868 transitions. [2022-01-10 06:24:05,431 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 868 transitions. Word has length 209 [2022-01-10 06:24:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:05,431 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 868 transitions. [2022-01-10 06:24:05,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 20.833333333333332) internal successors, (125), 8 states have internal predecessors, (125), 4 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-01-10 06:24:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 868 transitions. [2022-01-10 06:24:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-10 06:24:05,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:05,433 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:05,464 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 06:24:05,646 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 06:24:05,646 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -484702782, now seen corresponding path program 1 times [2022-01-10 06:24:05,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:05,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947660220] [2022-01-10 06:24:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:05,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:05,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:05,649 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 06:24:05,650 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 06:24:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:05,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:05,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-10 06:24:06,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:06,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:06,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947660220] [2022-01-10 06:24:06,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947660220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:06,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:06,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:24:06,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856274740] [2022-01-10 06:24:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:06,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:24:06,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:24:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:06,320 INFO L87 Difference]: Start difference. First operand 606 states and 868 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-01-10 06:24:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:06,441 INFO L93 Difference]: Finished difference Result 1132 states and 1637 transitions. [2022-01-10 06:24:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:24:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 217 [2022-01-10 06:24:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:06,444 INFO L225 Difference]: With dead ends: 1132 [2022-01-10 06:24:06,444 INFO L226 Difference]: Without dead ends: 606 [2022-01-10 06:24:06,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:24:06,445 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 355 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:06,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 3814 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-01-10 06:24:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2022-01-10 06:24:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 451 states have (on average 1.4456762749445675) internal successors, (652), 464 states have internal predecessors, (652), 105 states have call successors, (105), 46 states have call predecessors, (105), 49 states have return successors, (110), 103 states have call predecessors, (110), 104 states have call successors, (110) [2022-01-10 06:24:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 867 transitions. [2022-01-10 06:24:06,460 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 867 transitions. Word has length 217 [2022-01-10 06:24:06,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:06,460 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 867 transitions. [2022-01-10 06:24:06,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-01-10 06:24:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 867 transitions. [2022-01-10 06:24:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-01-10 06:24:06,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:06,462 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:06,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:06,675 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 06:24:06,676 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1021915269, now seen corresponding path program 1 times [2022-01-10 06:24:06,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:06,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088890765] [2022-01-10 06:24:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:06,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:06,678 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 06:24:06,680 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 06:24:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:07,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:07,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 06:24:07,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:07,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088890765] [2022-01-10 06:24:07,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088890765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:07,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:07,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:24:07,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407992853] [2022-01-10 06:24:07,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:07,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:24:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:24:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:07,289 INFO L87 Difference]: Start difference. First operand 606 states and 867 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-01-10 06:24:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:07,412 INFO L93 Difference]: Finished difference Result 1134 states and 1642 transitions. [2022-01-10 06:24:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:24:07,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 211 [2022-01-10 06:24:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:07,416 INFO L225 Difference]: With dead ends: 1134 [2022-01-10 06:24:07,416 INFO L226 Difference]: Without dead ends: 608 [2022-01-10 06:24:07,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:24:07,417 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 353 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:07,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 3817 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-01-10 06:24:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-01-10 06:24:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 452 states have (on average 1.4446902654867257) internal successors, (653), 466 states have internal predecessors, (653), 105 states have call successors, (105), 46 states have call predecessors, (105), 50 states have return successors, (114), 103 states have call predecessors, (114), 104 states have call successors, (114) [2022-01-10 06:24:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 872 transitions. [2022-01-10 06:24:07,432 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 872 transitions. Word has length 211 [2022-01-10 06:24:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:07,433 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 872 transitions. [2022-01-10 06:24:07,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-01-10 06:24:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 872 transitions. [2022-01-10 06:24:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-10 06:24:07,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:07,435 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:07,450 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 06:24:07,650 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 06:24:07,650 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2073473177, now seen corresponding path program 1 times [2022-01-10 06:24:07,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:07,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876081552] [2022-01-10 06:24:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:07,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:07,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:07,653 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 06:24:07,691 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 06:24:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:07,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:07,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:08,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:08,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:08,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876081552] [2022-01-10 06:24:08,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876081552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:08,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:08,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:08,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207024805] [2022-01-10 06:24:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:08,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:08,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:08,198 INFO L87 Difference]: Start difference. First operand 608 states and 872 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:08,224 INFO L93 Difference]: Finished difference Result 940 states and 1329 transitions. [2022-01-10 06:24:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 212 [2022-01-10 06:24:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:08,228 INFO L225 Difference]: With dead ends: 940 [2022-01-10 06:24:08,228 INFO L226 Difference]: Without dead ends: 611 [2022-01-10 06:24:08,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 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 06:24:08,230 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 1 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1702 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 06:24:08,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1702 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-01-10 06:24:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 610. [2022-01-10 06:24:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 454 states have (on average 1.4427312775330396) internal successors, (655), 468 states have internal predecessors, (655), 105 states have call successors, (105), 46 states have call predecessors, (105), 50 states have return successors, (114), 103 states have call predecessors, (114), 104 states have call successors, (114) [2022-01-10 06:24:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 874 transitions. [2022-01-10 06:24:08,245 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 874 transitions. Word has length 212 [2022-01-10 06:24:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:08,245 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 874 transitions. [2022-01-10 06:24:08,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:08,245 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 874 transitions. [2022-01-10 06:24:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 06:24:08,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:08,247 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:08,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:08,459 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 06:24:08,460 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 476740735, now seen corresponding path program 1 times [2022-01-10 06:24:08,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:08,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797670220] [2022-01-10 06:24:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:08,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:08,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:08,462 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 06:24:08,462 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 06:24:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:08,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:08,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:09,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:09,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:09,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797670220] [2022-01-10 06:24:09,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797670220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:09,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:09,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:09,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805299452] [2022-01-10 06:24:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:09,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:09,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:09,026 INFO L87 Difference]: Start difference. First operand 610 states and 874 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:09,048 INFO L93 Difference]: Finished difference Result 1233 states and 1801 transitions. [2022-01-10 06:24:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 220 [2022-01-10 06:24:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:09,051 INFO L225 Difference]: With dead ends: 1233 [2022-01-10 06:24:09,051 INFO L226 Difference]: Without dead ends: 708 [2022-01-10 06:24:09,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 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 06:24:09,053 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 165 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1684 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 06:24:09,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1684 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-01-10 06:24:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 700. [2022-01-10 06:24:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 530 states have (on average 1.4584905660377359) internal successors, (773), 544 states have internal predecessors, (773), 119 states have call successors, (119), 46 states have call predecessors, (119), 50 states have return successors, (130), 117 states have call predecessors, (130), 118 states have call successors, (130) [2022-01-10 06:24:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1022 transitions. [2022-01-10 06:24:09,096 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1022 transitions. Word has length 220 [2022-01-10 06:24:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:09,096 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1022 transitions. [2022-01-10 06:24:09,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1022 transitions. [2022-01-10 06:24:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 06:24:09,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:09,100 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:09,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:09,312 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 06:24:09,313 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1126590268, now seen corresponding path program 1 times [2022-01-10 06:24:09,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:09,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037552631] [2022-01-10 06:24:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:09,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:09,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:09,317 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 06:24:09,319 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 06:24:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:24:09,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:09,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:24:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:10,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:10,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037552631] [2022-01-10 06:24:10,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037552631] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:24:10,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:24:10,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:24:10,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508979315] [2022-01-10 06:24:10,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:24:10,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:24:10,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:24:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:10,191 INFO L87 Difference]: Start difference. First operand 700 states and 1022 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-01-10 06:24:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:10,411 INFO L93 Difference]: Finished difference Result 1592 states and 2400 transitions. [2022-01-10 06:24:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:24:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 221 [2022-01-10 06:24:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:10,416 INFO L225 Difference]: With dead ends: 1592 [2022-01-10 06:24:10,416 INFO L226 Difference]: Without dead ends: 1263 [2022-01-10 06:24:10,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 436 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 06:24:10,418 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 889 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:10,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 3745 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:24:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-10 06:24:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1239. [2022-01-10 06:24:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 990 states have (on average 1.5121212121212122) internal successors, (1497), 1004 states have internal predecessors, (1497), 198 states have call successors, (198), 46 states have call predecessors, (198), 50 states have return successors, (219), 196 states have call predecessors, (219), 197 states have call successors, (219) [2022-01-10 06:24:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1914 transitions. [2022-01-10 06:24:10,452 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1914 transitions. Word has length 221 [2022-01-10 06:24:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:10,452 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1914 transitions. [2022-01-10 06:24:10,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-01-10 06:24:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1914 transitions. [2022-01-10 06:24:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 06:24:10,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:10,456 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:10,474 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 06:24:10,668 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 06:24:10,669 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 972774816, now seen corresponding path program 1 times [2022-01-10 06:24:10,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:10,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505944849] [2022-01-10 06:24:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:10,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:10,671 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 06:24:10,672 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 06:24:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:10,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:10,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 06:24:11,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:11,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:11,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505944849] [2022-01-10 06:24:11,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505944849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:11,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:11,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:11,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249441902] [2022-01-10 06:24:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:11,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:11,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:11,275 INFO L87 Difference]: Start difference. First operand 1239 states and 1914 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:11,338 INFO L93 Difference]: Finished difference Result 2849 states and 4475 transitions. [2022-01-10 06:24:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:11,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 232 [2022-01-10 06:24:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:11,345 INFO L225 Difference]: With dead ends: 2849 [2022-01-10 06:24:11,345 INFO L226 Difference]: Without dead ends: 1748 [2022-01-10 06:24:11,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 06:24:11,348 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 163 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1719 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 06:24:11,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1719 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-01-10 06:24:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1740. [2022-01-10 06:24:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1412 states have (on average 1.524787535410765) internal successors, (2153), 1426 states have internal predecessors, (2153), 277 states have call successors, (277), 46 states have call predecessors, (277), 50 states have return successors, (308), 275 states have call predecessors, (308), 276 states have call successors, (308) [2022-01-10 06:24:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2738 transitions. [2022-01-10 06:24:11,401 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2738 transitions. Word has length 232 [2022-01-10 06:24:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:11,401 INFO L470 AbstractCegarLoop]: Abstraction has 1740 states and 2738 transitions. [2022-01-10 06:24:11,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2738 transitions. [2022-01-10 06:24:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 06:24:11,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:11,407 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:11,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:11,619 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 06:24:11,620 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash 281354459, now seen corresponding path program 1 times [2022-01-10 06:24:11,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:11,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667747794] [2022-01-10 06:24:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:11,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:11,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:11,622 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 06:24:11,624 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 06:24:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:11,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 06:24:12,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:12,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:12,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667747794] [2022-01-10 06:24:12,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667747794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:12,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:12,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:12,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391911954] [2022-01-10 06:24:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:12,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:12,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:12,170 INFO L87 Difference]: Start difference. First operand 1740 states and 2738 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:12,236 INFO L93 Difference]: Finished difference Result 4096 states and 6516 transitions. [2022-01-10 06:24:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:12,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 233 [2022-01-10 06:24:12,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:12,247 INFO L225 Difference]: With dead ends: 4096 [2022-01-10 06:24:12,247 INFO L226 Difference]: Without dead ends: 2557 [2022-01-10 06:24:12,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 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 06:24:12,253 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 161 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1716 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 06:24:12,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 1716 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2022-01-10 06:24:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2549. [2022-01-10 06:24:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2102 states have (on average 1.5380589914367269) internal successors, (3233), 2116 states have internal predecessors, (3233), 396 states have call successors, (396), 46 states have call predecessors, (396), 50 states have return successors, (427), 394 states have call predecessors, (427), 395 states have call successors, (427) [2022-01-10 06:24:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 4056 transitions. [2022-01-10 06:24:12,356 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 4056 transitions. Word has length 233 [2022-01-10 06:24:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:12,357 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 4056 transitions. [2022-01-10 06:24:12,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 4056 transitions. [2022-01-10 06:24:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 06:24:12,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:12,365 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:12,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:12,578 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 06:24:12,579 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash 14038675, now seen corresponding path program 1 times [2022-01-10 06:24:12,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:12,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645467161] [2022-01-10 06:24:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:12,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:12,581 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 06:24:12,583 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 06:24:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:12,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:12,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 06:24:13,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:13,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:13,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645467161] [2022-01-10 06:24:13,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645467161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:13,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:13,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:13,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160882053] [2022-01-10 06:24:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:13,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:13,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:13,132 INFO L87 Difference]: Start difference. First operand 2549 states and 4056 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:13,236 INFO L93 Difference]: Finished difference Result 5995 states and 9639 transitions. [2022-01-10 06:24:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:13,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 234 [2022-01-10 06:24:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:13,252 INFO L225 Difference]: With dead ends: 5995 [2022-01-10 06:24:13,252 INFO L226 Difference]: Without dead ends: 3804 [2022-01-10 06:24:13,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 06:24:13,261 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 159 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1710 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 06:24:13,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1710 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2022-01-10 06:24:13,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3796. [2022-01-10 06:24:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 3187 states have (on average 1.5491057420771885) internal successors, (4937), 3201 states have internal predecessors, (4937), 558 states have call successors, (558), 46 states have call predecessors, (558), 50 states have return successors, (605), 556 states have call predecessors, (605), 557 states have call successors, (605) [2022-01-10 06:24:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 6100 transitions. [2022-01-10 06:24:13,459 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 6100 transitions. Word has length 234 [2022-01-10 06:24:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:13,459 INFO L470 AbstractCegarLoop]: Abstraction has 3796 states and 6100 transitions. [2022-01-10 06:24:13,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 6100 transitions. [2022-01-10 06:24:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 06:24:13,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:13,475 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:13,505 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 06:24:13,690 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 06:24:13,691 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1773704627, now seen corresponding path program 1 times [2022-01-10 06:24:13,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:13,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145139564] [2022-01-10 06:24:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:13,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:13,699 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 06:24:13,741 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 06:24:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:13,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:13,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 06:24:14,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:14,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:14,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145139564] [2022-01-10 06:24:14,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145139564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:14,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:14,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:14,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036910702] [2022-01-10 06:24:14,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:14,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:14,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:14,234 INFO L87 Difference]: Start difference. First operand 3796 states and 6100 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:14,410 INFO L93 Difference]: Finished difference Result 8997 states and 14591 transitions. [2022-01-10 06:24:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 235 [2022-01-10 06:24:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:14,438 INFO L225 Difference]: With dead ends: 8997 [2022-01-10 06:24:14,438 INFO L226 Difference]: Without dead ends: 5818 [2022-01-10 06:24:14,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 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 06:24:14,447 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 157 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1710 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 06:24:14,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1710 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2022-01-10 06:24:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5810. [2022-01-10 06:24:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 4956 states have (on average 1.558313155770783) internal successors, (7723), 4970 states have internal predecessors, (7723), 803 states have call successors, (803), 46 states have call predecessors, (803), 50 states have return successors, (876), 801 states have call predecessors, (876), 802 states have call successors, (876) [2022-01-10 06:24:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 9402 transitions. [2022-01-10 06:24:14,666 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 9402 transitions. Word has length 235 [2022-01-10 06:24:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:14,668 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 9402 transitions. [2022-01-10 06:24:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 9402 transitions. [2022-01-10 06:24:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 06:24:14,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:14,719 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:14,751 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 06:24:14,942 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 06:24:14,942 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1505681380, now seen corresponding path program 1 times [2022-01-10 06:24:14,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132155644] [2022-01-10 06:24:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:14,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:14,945 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 06:24:14,985 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 06:24:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:15,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:15,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 06:24:15,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:15,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132155644] [2022-01-10 06:24:15,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132155644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:15,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:15,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:15,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470184019] [2022-01-10 06:24:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:15,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:15,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:15,486 INFO L87 Difference]: Start difference. First operand 5810 states and 9402 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:15,706 INFO L93 Difference]: Finished difference Result 13990 states and 22789 transitions. [2022-01-10 06:24:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:15,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 236 [2022-01-10 06:24:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:15,736 INFO L225 Difference]: With dead ends: 13990 [2022-01-10 06:24:15,736 INFO L226 Difference]: Without dead ends: 9193 [2022-01-10 06:24:15,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 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 06:24:15,747 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 155 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1729 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 06:24:15,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1729 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9193 states. [2022-01-10 06:24:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9193 to 9185. [2022-01-10 06:24:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9185 states, 7838 states have (on average 1.5561367695840775) internal successors, (12197), 7852 states have internal predecessors, (12197), 1296 states have call successors, (1296), 46 states have call predecessors, (1296), 50 states have return successors, (1413), 1294 states have call predecessors, (1413), 1295 states have call successors, (1413) [2022-01-10 06:24:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9185 states to 9185 states and 14906 transitions. [2022-01-10 06:24:16,069 INFO L78 Accepts]: Start accepts. Automaton has 9185 states and 14906 transitions. Word has length 236 [2022-01-10 06:24:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:16,069 INFO L470 AbstractCegarLoop]: Abstraction has 9185 states and 14906 transitions. [2022-01-10 06:24:16,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9185 states and 14906 transitions. [2022-01-10 06:24:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-10 06:24:16,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:16,094 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:16,121 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 06:24:16,307 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 06:24:16,308 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2022827320, now seen corresponding path program 1 times [2022-01-10 06:24:16,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:16,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994232569] [2022-01-10 06:24:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:16,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:16,310 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 06:24:16,311 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 06:24:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:16,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:16,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 06:24:16,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:16,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:16,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994232569] [2022-01-10 06:24:16,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994232569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:16,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:16,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:16,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841940768] [2022-01-10 06:24:16,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:16,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:16,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:16,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:16,859 INFO L87 Difference]: Start difference. First operand 9185 states and 14906 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:17,423 INFO L93 Difference]: Finished difference Result 22943 states and 37554 transitions. [2022-01-10 06:24:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 237 [2022-01-10 06:24:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:17,472 INFO L225 Difference]: With dead ends: 22943 [2022-01-10 06:24:17,472 INFO L226 Difference]: Without dead ends: 15267 [2022-01-10 06:24:17,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 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 06:24:17,495 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 153 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1715 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 06:24:17,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1715 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15267 states. [2022-01-10 06:24:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15267 to 15259. [2022-01-10 06:24:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15259 states, 13090 states have (on average 1.5621848739495798) internal successors, (20449), 13104 states have internal predecessors, (20449), 2118 states have call successors, (2118), 46 states have call predecessors, (2118), 50 states have return successors, (2313), 2116 states have call predecessors, (2313), 2117 states have call successors, (2313) [2022-01-10 06:24:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15259 states to 15259 states and 24880 transitions. [2022-01-10 06:24:18,168 INFO L78 Accepts]: Start accepts. Automaton has 15259 states and 24880 transitions. Word has length 237 [2022-01-10 06:24:18,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:18,168 INFO L470 AbstractCegarLoop]: Abstraction has 15259 states and 24880 transitions. [2022-01-10 06:24:18,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:24:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 15259 states and 24880 transitions. [2022-01-10 06:24:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-10 06:24:18,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:18,196 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:18,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 06:24:18,408 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 06:24:18,408 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1553423647, now seen corresponding path program 1 times [2022-01-10 06:24:18,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:18,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913001967] [2022-01-10 06:24:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:18,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:18,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:18,426 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 06:24:18,486 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 06:24:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:18,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:18,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:18,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:18,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:18,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913001967] [2022-01-10 06:24:18,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913001967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:18,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:18,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:18,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321207647] [2022-01-10 06:24:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:18,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:18,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:18,910 INFO L87 Difference]: Start difference. First operand 15259 states and 24880 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:19,800 INFO L93 Difference]: Finished difference Result 36752 states and 59657 transitions. [2022-01-10 06:24:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 231 [2022-01-10 06:24:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:19,893 INFO L225 Difference]: With dead ends: 36752 [2022-01-10 06:24:19,893 INFO L226 Difference]: Without dead ends: 24136 [2022-01-10 06:24:19,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 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 06:24:19,923 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 151 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1693 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 06:24:19,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1693 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24136 states. [2022-01-10 06:24:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24136 to 24128. [2022-01-10 06:24:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24128 states, 20756 states have (on average 1.5353150896126422) internal successors, (31867), 20770 states have internal predecessors, (31867), 3321 states have call successors, (3321), 46 states have call predecessors, (3321), 50 states have return successors, (3660), 3319 states have call predecessors, (3660), 3320 states have call successors, (3660) [2022-01-10 06:24:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24128 states to 24128 states and 38848 transitions. [2022-01-10 06:24:20,910 INFO L78 Accepts]: Start accepts. Automaton has 24128 states and 38848 transitions. Word has length 231 [2022-01-10 06:24:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:20,911 INFO L470 AbstractCegarLoop]: Abstraction has 24128 states and 38848 transitions. [2022-01-10 06:24:20,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 24128 states and 38848 transitions. [2022-01-10 06:24:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 06:24:20,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:20,954 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:20,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 06:24:21,165 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 06:24:21,165 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1939332644, now seen corresponding path program 1 times [2022-01-10 06:24:21,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:21,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79693586] [2022-01-10 06:24:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:21,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:21,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:21,168 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 06:24:21,213 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 06:24:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:21,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:21,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:21,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:21,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79693586] [2022-01-10 06:24:21,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79693586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:21,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:21,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:21,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059046026] [2022-01-10 06:24:21,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:21,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:21,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:21,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:21,968 INFO L87 Difference]: Start difference. First operand 24128 states and 38848 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:23,071 INFO L93 Difference]: Finished difference Result 63605 states and 102805 transitions. [2022-01-10 06:24:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 232 [2022-01-10 06:24:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:23,195 INFO L225 Difference]: With dead ends: 63605 [2022-01-10 06:24:23,195 INFO L226 Difference]: Without dead ends: 42932 [2022-01-10 06:24:23,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 06:24:23,245 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 149 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1716 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 06:24:23,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1716 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42932 states. [2022-01-10 06:24:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42932 to 42924. [2022-01-10 06:24:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42924 states, 37102 states have (on average 1.5354158805455231) internal successors, (56967), 37116 states have internal predecessors, (56967), 5771 states have call successors, (5771), 46 states have call predecessors, (5771), 50 states have return successors, (6384), 5769 states have call predecessors, (6384), 5770 states have call successors, (6384) [2022-01-10 06:24:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42924 states to 42924 states and 69122 transitions. [2022-01-10 06:24:25,092 INFO L78 Accepts]: Start accepts. Automaton has 42924 states and 69122 transitions. Word has length 232 [2022-01-10 06:24:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:25,092 INFO L470 AbstractCegarLoop]: Abstraction has 42924 states and 69122 transitions. [2022-01-10 06:24:25,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 42924 states and 69122 transitions. [2022-01-10 06:24:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 06:24:25,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:25,151 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:25,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:25,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:25,365 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1878067470, now seen corresponding path program 1 times [2022-01-10 06:24:25,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:25,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881508772] [2022-01-10 06:24:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:25,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:25,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:25,384 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:25,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:24:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:25,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:25,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:25,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:25,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881508772] [2022-01-10 06:24:25,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881508772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:25,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:25,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:25,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766295921] [2022-01-10 06:24:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:25,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:25,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:25,951 INFO L87 Difference]: Start difference. First operand 42924 states and 69122 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:28,257 INFO L93 Difference]: Finished difference Result 116267 states and 188227 transitions. [2022-01-10 06:24:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 233 [2022-01-10 06:24:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:28,503 INFO L225 Difference]: With dead ends: 116267 [2022-01-10 06:24:28,503 INFO L226 Difference]: Without dead ends: 77974 [2022-01-10 06:24:28,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 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 06:24:28,609 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 147 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1715 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 06:24:28,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1715 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77974 states. [2022-01-10 06:24:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77974 to 77966. [2022-01-10 06:24:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77966 states, 67631 states have (on average 1.5390723189070101) internal successors, (104089), 67645 states have internal predecessors, (104089), 10284 states have call successors, (10284), 46 states have call predecessors, (10284), 50 states have return successors, (11429), 10282 states have call predecessors, (11429), 10283 states have call successors, (11429) [2022-01-10 06:24:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77966 states to 77966 states and 125802 transitions. [2022-01-10 06:24:32,070 INFO L78 Accepts]: Start accepts. Automaton has 77966 states and 125802 transitions. Word has length 233 [2022-01-10 06:24:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:32,071 INFO L470 AbstractCegarLoop]: Abstraction has 77966 states and 125802 transitions. [2022-01-10 06:24:32,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 77966 states and 125802 transitions. [2022-01-10 06:24:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 06:24:32,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:32,180 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:32,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:32,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:32,394 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1637156968, now seen corresponding path program 1 times [2022-01-10 06:24:32,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683193418] [2022-01-10 06:24:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:32,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:32,396 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:32,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:24:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:32,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:32,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:24:32,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:32,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:32,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683193418] [2022-01-10 06:24:32,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683193418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:32,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:32,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:32,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176106489] [2022-01-10 06:24:32,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:32,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:32,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:32,936 INFO L87 Difference]: Start difference. First operand 77966 states and 125802 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:37,082 INFO L93 Difference]: Finished difference Result 145728 states and 235919 transitions. [2022-01-10 06:24:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 234 [2022-01-10 06:24:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:37,753 INFO L225 Difference]: With dead ends: 145728 [2022-01-10 06:24:37,753 INFO L226 Difference]: Without dead ends: 145399 [2022-01-10 06:24:37,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 06:24:37,819 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 145 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1716 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 06:24:37,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1716 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145399 states. [2022-01-10 06:24:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145399 to 145391. [2022-01-10 06:24:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145391 states, 126688 states have (on average 1.5381883051275576) internal successors, (194870), 126702 states have internal predecessors, (194870), 18652 states have call successors, (18652), 46 states have call predecessors, (18652), 50 states have return successors, (20843), 18650 states have call predecessors, (20843), 18651 states have call successors, (20843) [2022-01-10 06:24:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145391 states to 145391 states and 234365 transitions. [2022-01-10 06:24:44,620 INFO L78 Accepts]: Start accepts. Automaton has 145391 states and 234365 transitions. Word has length 234 [2022-01-10 06:24:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:44,620 INFO L470 AbstractCegarLoop]: Abstraction has 145391 states and 234365 transitions. [2022-01-10 06:24:44,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-01-10 06:24:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 145391 states and 234365 transitions. [2022-01-10 06:24:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-10 06:24:45,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:45,001 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:45,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:24:45,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:45,215 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1882409106, now seen corresponding path program 1 times [2022-01-10 06:24:45,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:45,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543751926] [2022-01-10 06:24:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:45,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:45,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:45,217 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:45,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:24:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:45,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:24:45,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-01-10 06:24:45,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:24:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-01-10 06:24:46,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:46,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543751926] [2022-01-10 06:24:46,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543751926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:24:46,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:24:46,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:24:46,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568026835] [2022-01-10 06:24:46,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:24:46,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:24:46,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:24:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:24:46,374 INFO L87 Difference]: Start difference. First operand 145391 states and 234365 transitions. Second operand has 16 states, 16 states have (on average 15.375) internal successors, (246), 14 states have internal predecessors, (246), 4 states have call successors, (56), 6 states have call predecessors, (56), 9 states have return successors, (46), 6 states have call predecessors, (46), 4 states have call successors, (46)