/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_spec11_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:21:08,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:21:08,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:21:08,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:21:08,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:21:08,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:21:08,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:21:08,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:21:08,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:21:08,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:21:08,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:21:08,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:21:08,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:21:08,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:21:08,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:21:08,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:21:08,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:21:08,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:21:08,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:21:08,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:21:08,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:21:08,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:21:08,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:21:08,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:21:08,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:21:08,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:21:08,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:21:08,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:21:08,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:21:08,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:21:08,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:21:08,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:21:08,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:21:08,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:21:08,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:21:08,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:21:08,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:21:08,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:21:08,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:21:08,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:21:08,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:21:08,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:21:08,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:21:08,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:21:08,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:21:08,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:21:08,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:21:08,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:21:08,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:21:08,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:21:08,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:21:08,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:21:08,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:21:08,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:21:08,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:21:08,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:21:08,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:21:08,231 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:21:08,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:21:08,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:21:08,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:21:08,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:21:08,434 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:21:08,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product36.cil.c [2022-01-10 06:21:08,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a5050cc/37c56a35595543ce922fe80f66def684/FLAGeaff59584 [2022-01-10 06:21:08,905 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:21:08,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product36.cil.c [2022-01-10 06:21:08,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a5050cc/37c56a35595543ce922fe80f66def684/FLAGeaff59584 [2022-01-10 06:21:09,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a5050cc/37c56a35595543ce922fe80f66def684 [2022-01-10 06:21:09,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:21:09,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:21:09,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:21:09,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:21:09,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:21:09,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:09,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f921331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09, skipping insertion in model container [2022-01-10 06:21:09,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:09,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:21:09,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:21:09,683 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_spec11_product36.cil.c[27504,27517] [2022-01-10 06:21:09,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:09,757 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:21:09,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:21:09,818 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_spec11_product36.cil.c[27504,27517] [2022-01-10 06:21:09,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:09,874 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:21:09,942 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_spec11_product36.cil.c[27504,27517] [2022-01-10 06:21:09,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:09,995 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:21:09,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09 WrapperNode [2022-01-10 06:21:09,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:21:09,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:21:09,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:21:09,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:21:10,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,080 INFO L137 Inliner]: procedures = 115, calls = 154, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 659 [2022-01-10 06:21:10,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:21:10,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:21:10,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:21:10,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:21:10,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:21:10,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:21:10,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:21:10,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:21:10,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (1/1) ... [2022-01-10 06:21:10,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:21:10,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:21:10,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:21:10,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:21:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-01-10 06:21:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-01-10 06:21:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-01-10 06:21:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-01-10 06:21:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:21:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:21:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-01-10 06:21:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-01-10 06:21:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:21:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:21:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:21:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:21:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:21:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-01-10 06:21:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:21:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-01-10 06:21:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:21:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:21:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:21:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:21:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:21:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:21:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-01-10 06:21:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-01-10 06:21:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:21:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:21:10,417 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:21:10,418 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:21:10,916 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:21:10,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:21:10,936 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:21:10,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:21:10 BoogieIcfgContainer [2022-01-10 06:21:10,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:21:10,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:21:10,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:21:10,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:21:10,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:21:09" (1/3) ... [2022-01-10 06:21:10,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aef8de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:21:10, skipping insertion in model container [2022-01-10 06:21:10,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:09" (2/3) ... [2022-01-10 06:21:10,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aef8de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:21:10, skipping insertion in model container [2022-01-10 06:21:10,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:21:10" (3/3) ... [2022-01-10 06:21:10,945 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product36.cil.c [2022-01-10 06:21:10,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:21:10,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:21:11,008 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:21:11,013 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:21:11,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:21:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 188 states have internal predecessors, (287), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 06:21:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:21:11,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:11,055 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:11,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:11,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1065275904, now seen corresponding path program 1 times [2022-01-10 06:21:11,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:11,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101525671] [2022-01-10 06:21:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:11,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:11,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:11,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:21:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:11,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:21:11,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:21:11,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:11,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:11,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101525671] [2022-01-10 06:21:11,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101525671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:11,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:11,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:21:11,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746943228] [2022-01-10 06:21:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:11,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:21:11,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:21:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:21:11,550 INFO L87 Difference]: Start difference. First operand has 232 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 188 states have internal predecessors, (287), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:11,619 INFO L93 Difference]: Finished difference Result 370 states and 545 transitions. [2022-01-10 06:21:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:21:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-01-10 06:21:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:11,641 INFO L225 Difference]: With dead ends: 370 [2022-01-10 06:21:11,641 INFO L226 Difference]: Without dead ends: 225 [2022-01-10 06:21:11,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:21:11,653 INFO L933 BasicCegarLoop]: 345 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, 345 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:11,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-10 06:21:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-01-10 06:21:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 1.541899441340782) internal successors, (276), 181 states have internal predecessors, (276), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 06:21:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 337 transitions. [2022-01-10 06:21:11,731 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 337 transitions. Word has length 78 [2022-01-10 06:21:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:11,732 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 337 transitions. [2022-01-10 06:21:11,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 337 transitions. [2022-01-10 06:21:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 06:21:11,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:11,743 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:11,759 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 06:21:11,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,955 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:11,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1762266967, now seen corresponding path program 1 times [2022-01-10 06:21:11,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:11,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586698185] [2022-01-10 06:21:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:11,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:11,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:11,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:21:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:12,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:12,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:21:12,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:12,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:12,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586698185] [2022-01-10 06:21:12,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586698185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:12,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:12,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:12,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49067208] [2022-01-10 06:21:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:12,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:12,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:12,453 INFO L87 Difference]: Start difference. First operand 225 states and 337 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:21:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:12,533 INFO L93 Difference]: Finished difference Result 443 states and 667 transitions. [2022-01-10 06:21:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:12,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2022-01-10 06:21:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:12,536 INFO L225 Difference]: With dead ends: 443 [2022-01-10 06:21:12,536 INFO L226 Difference]: Without dead ends: 227 [2022-01-10 06:21:12,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:12,537 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 108 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:12,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1198 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:12,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-10 06:21:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-01-10 06:21:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 180 states have (on average 1.538888888888889) internal successors, (277), 183 states have internal predecessors, (277), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (32), 29 states have call predecessors, (32), 30 states have call successors, (32) [2022-01-10 06:21:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 340 transitions. [2022-01-10 06:21:12,567 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 340 transitions. Word has length 79 [2022-01-10 06:21:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:12,567 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 340 transitions. [2022-01-10 06:21:12,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:21:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 340 transitions. [2022-01-10 06:21:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 06:21:12,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:12,568 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:12,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:12,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:12,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:12,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1568465385, now seen corresponding path program 1 times [2022-01-10 06:21:12,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:12,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163123528] [2022-01-10 06:21:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:12,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:12,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:12,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:12,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:21:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:13,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:13,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:21:13,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:13,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:13,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163123528] [2022-01-10 06:21:13,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163123528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:13,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:13,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:13,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782875002] [2022-01-10 06:21:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:13,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:13,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:13,156 INFO L87 Difference]: Start difference. First operand 227 states and 340 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:21:13,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:13,209 INFO L93 Difference]: Finished difference Result 435 states and 655 transitions. [2022-01-10 06:21:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:13,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-01-10 06:21:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:13,211 INFO L225 Difference]: With dead ends: 435 [2022-01-10 06:21:13,211 INFO L226 Difference]: Without dead ends: 227 [2022-01-10 06:21:13,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:13,213 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 107 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:13,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1199 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-10 06:21:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-01-10 06:21:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 180 states have (on average 1.538888888888889) internal successors, (277), 183 states have internal predecessors, (277), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2022-01-10 06:21:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 339 transitions. [2022-01-10 06:21:13,227 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 339 transitions. Word has length 80 [2022-01-10 06:21:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:13,227 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 339 transitions. [2022-01-10 06:21:13,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:21:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 339 transitions. [2022-01-10 06:21:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 06:21:13,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:13,229 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:13,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:13,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:13,441 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:13,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1145878541, now seen corresponding path program 2 times [2022-01-10 06:21:13,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:13,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739950041] [2022-01-10 06:21:13,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:21:13,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:13,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:13,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:13,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:21:13,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:21:13,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:21:13,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:21:13,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:13,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:13,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:13,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739950041] [2022-01-10 06:21:13,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739950041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:13,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:13,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:21:13,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015577368] [2022-01-10 06:21:13,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:13,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:13,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:13,810 INFO L87 Difference]: Start difference. First operand 227 states and 339 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:13,921 INFO L93 Difference]: Finished difference Result 631 states and 941 transitions. [2022-01-10 06:21:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:21:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2022-01-10 06:21:13,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:13,925 INFO L225 Difference]: With dead ends: 631 [2022-01-10 06:21:13,925 INFO L226 Difference]: Without dead ends: 507 [2022-01-10 06:21:13,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:21:13,927 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 413 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:13,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1429 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-01-10 06:21:13,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 433. [2022-01-10 06:21:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 345 states have (on average 1.5536231884057972) internal successors, (536), 350 states have internal predecessors, (536), 59 states have call successors, (59), 27 states have call predecessors, (59), 28 states have return successors, (58), 55 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 06:21:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 653 transitions. [2022-01-10 06:21:13,954 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 653 transitions. Word has length 81 [2022-01-10 06:21:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:13,955 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 653 transitions. [2022-01-10 06:21:13,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 653 transitions. [2022-01-10 06:21:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 06:21:13,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:13,958 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:13,974 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 06:21:14,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:14,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1698804078, now seen corresponding path program 1 times [2022-01-10 06:21:14,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:14,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92957154] [2022-01-10 06:21:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:14,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:14,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:14,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:14,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:21:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:14,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:14,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:21:14,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:14,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:14,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92957154] [2022-01-10 06:21:14,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92957154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:14,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:14,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:14,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352918468] [2022-01-10 06:21:14,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:14,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:14,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:14,543 INFO L87 Difference]: Start difference. First operand 433 states and 653 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:21:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:14,602 INFO L93 Difference]: Finished difference Result 849 states and 1286 transitions. [2022-01-10 06:21:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2022-01-10 06:21:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:14,606 INFO L225 Difference]: With dead ends: 849 [2022-01-10 06:21:14,606 INFO L226 Difference]: Without dead ends: 435 [2022-01-10 06:21:14,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:14,608 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 105 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:14,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1201 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-01-10 06:21:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2022-01-10 06:21:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 346 states have (on average 1.5520231213872833) internal successors, (537), 352 states have internal predecessors, (537), 59 states have call successors, (59), 27 states have call predecessors, (59), 29 states have return successors, (60), 55 states have call predecessors, (60), 57 states have call successors, (60) [2022-01-10 06:21:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 656 transitions. [2022-01-10 06:21:14,637 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 656 transitions. Word has length 82 [2022-01-10 06:21:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:14,637 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 656 transitions. [2022-01-10 06:21:14,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:21:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 656 transitions. [2022-01-10 06:21:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 06:21:14,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:14,639 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:14,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:14,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:14,851 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1661358839, now seen corresponding path program 1 times [2022-01-10 06:21:14,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97456392] [2022-01-10 06:21:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:14,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:14,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:14,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:21:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:15,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:15,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:15,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:15,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:15,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97456392] [2022-01-10 06:21:15,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97456392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:15,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:15,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:15,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834887721] [2022-01-10 06:21:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:15,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:15,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:15,224 INFO L87 Difference]: Start difference. First operand 435 states and 656 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:15,242 INFO L93 Difference]: Finished difference Result 572 states and 844 transitions. [2022-01-10 06:21:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-01-10 06:21:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:15,245 INFO L225 Difference]: With dead ends: 572 [2022-01-10 06:21:15,245 INFO L226 Difference]: Without dead ends: 438 [2022-01-10 06:21:15,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:15,247 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:15,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 668 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-10 06:21:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 437. [2022-01-10 06:21:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 348 states have (on average 1.5488505747126438) internal successors, (539), 354 states have internal predecessors, (539), 59 states have call successors, (59), 27 states have call predecessors, (59), 29 states have return successors, (60), 55 states have call predecessors, (60), 57 states have call successors, (60) [2022-01-10 06:21:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 658 transitions. [2022-01-10 06:21:15,264 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 658 transitions. Word has length 83 [2022-01-10 06:21:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:15,264 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 658 transitions. [2022-01-10 06:21:15,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 658 transitions. [2022-01-10 06:21:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 06:21:15,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:15,266 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:15,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:15,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:15,477 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash -509331443, now seen corresponding path program 1 times [2022-01-10 06:21:15,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:15,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806340911] [2022-01-10 06:21:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:15,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:15,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:15,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:21:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:15,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:21:15,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:15,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:21:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:15,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806340911] [2022-01-10 06:21:15,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806340911] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:21:15,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:21:15,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:21:15,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440439597] [2022-01-10 06:21:15,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:21:15,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:21:15,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:15,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:21:15,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:15,998 INFO L87 Difference]: Start difference. First operand 437 states and 658 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:21:16,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:16,109 INFO L93 Difference]: Finished difference Result 1010 states and 1558 transitions. [2022-01-10 06:21:16,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:21:16,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-01-10 06:21:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:16,114 INFO L225 Difference]: With dead ends: 1010 [2022-01-10 06:21:16,114 INFO L226 Difference]: Without dead ends: 746 [2022-01-10 06:21:16,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:21:16,116 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 454 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:16,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1507 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:21:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-01-10 06:21:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 706. [2022-01-10 06:21:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 602 states have (on average 1.649501661129568) internal successors, (993), 608 states have internal predecessors, (993), 74 states have call successors, (74), 27 states have call predecessors, (74), 29 states have return successors, (75), 70 states have call predecessors, (75), 72 states have call successors, (75) [2022-01-10 06:21:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1142 transitions. [2022-01-10 06:21:16,171 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1142 transitions. Word has length 88 [2022-01-10 06:21:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:16,171 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 1142 transitions. [2022-01-10 06:21:16,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:21:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1142 transitions. [2022-01-10 06:21:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 06:21:16,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:16,174 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:16,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:16,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:16,388 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1124598514, now seen corresponding path program 1 times [2022-01-10 06:21:16,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:16,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293907026] [2022-01-10 06:21:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:16,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:16,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:16,391 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:16,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:21:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:16,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:16,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:16,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:16,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:16,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293907026] [2022-01-10 06:21:16,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293907026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:16,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:16,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:16,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239077582] [2022-01-10 06:21:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:16,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:16,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:16,698 INFO L87 Difference]: Start difference. First operand 706 states and 1142 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:16,736 INFO L93 Difference]: Finished difference Result 1666 states and 2744 transitions. [2022-01-10 06:21:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2022-01-10 06:21:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:16,741 INFO L225 Difference]: With dead ends: 1666 [2022-01-10 06:21:16,741 INFO L226 Difference]: Without dead ends: 988 [2022-01-10 06:21:16,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:16,744 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 92 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:16,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 680 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-01-10 06:21:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 972. [2022-01-10 06:21:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 853 states have (on average 1.6811254396248534) internal successors, (1434), 859 states have internal predecessors, (1434), 89 states have call successors, (89), 27 states have call predecessors, (89), 29 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-01-10 06:21:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1613 transitions. [2022-01-10 06:21:16,785 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1613 transitions. Word has length 95 [2022-01-10 06:21:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:16,785 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1613 transitions. [2022-01-10 06:21:16,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1613 transitions. [2022-01-10 06:21:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 06:21:16,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:16,789 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:16,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:17,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:17,001 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:17,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -546066315, now seen corresponding path program 1 times [2022-01-10 06:21:17,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:17,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309238806] [2022-01-10 06:21:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:17,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:17,003 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:17,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:21:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:17,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:17,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:17,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:17,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:17,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309238806] [2022-01-10 06:21:17,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309238806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:17,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:17,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:17,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473190841] [2022-01-10 06:21:17,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:17,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:17,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:17,315 INFO L87 Difference]: Start difference. First operand 972 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:17,366 INFO L93 Difference]: Finished difference Result 2272 states and 3834 transitions. [2022-01-10 06:21:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2022-01-10 06:21:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:17,374 INFO L225 Difference]: With dead ends: 2272 [2022-01-10 06:21:17,374 INFO L226 Difference]: Without dead ends: 1451 [2022-01-10 06:21:17,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:17,377 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 90 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:17,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 664 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-01-10 06:21:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1435. [2022-01-10 06:21:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1286 states have (on average 1.7161741835147746) internal successors, (2207), 1292 states have internal predecessors, (2207), 119 states have call successors, (119), 27 states have call predecessors, (119), 29 states have return successors, (120), 115 states have call predecessors, (120), 117 states have call successors, (120) [2022-01-10 06:21:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2446 transitions. [2022-01-10 06:21:17,446 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2446 transitions. Word has length 96 [2022-01-10 06:21:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:17,446 INFO L470 AbstractCegarLoop]: Abstraction has 1435 states and 2446 transitions. [2022-01-10 06:21:17,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2446 transitions. [2022-01-10 06:21:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 06:21:17,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:17,451 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:17,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:17,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:17,664 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -663617104, now seen corresponding path program 1 times [2022-01-10 06:21:17,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:17,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162690626] [2022-01-10 06:21:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:17,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:17,666 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:17,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:21:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:17,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:17,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:17,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:17,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:17,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162690626] [2022-01-10 06:21:17,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162690626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:17,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:17,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:17,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537703199] [2022-01-10 06:21:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:17,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:17,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:17,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:17,981 INFO L87 Difference]: Start difference. First operand 1435 states and 2446 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:18,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:18,048 INFO L93 Difference]: Finished difference Result 3497 states and 6023 transitions. [2022-01-10 06:21:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:18,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 97 [2022-01-10 06:21:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:18,057 INFO L225 Difference]: With dead ends: 3497 [2022-01-10 06:21:18,058 INFO L226 Difference]: Without dead ends: 2158 [2022-01-10 06:21:18,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:18,061 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 88 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:18,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-01-10 06:21:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2142. [2022-01-10 06:21:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1951 states have (on average 1.7211686314710406) internal successors, (3358), 1957 states have internal predecessors, (3358), 161 states have call successors, (161), 27 states have call predecessors, (161), 29 states have return successors, (162), 157 states have call predecessors, (162), 159 states have call successors, (162) [2022-01-10 06:21:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3681 transitions. [2022-01-10 06:21:18,135 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3681 transitions. Word has length 97 [2022-01-10 06:21:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:18,135 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 3681 transitions. [2022-01-10 06:21:18,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3681 transitions. [2022-01-10 06:21:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 06:21:18,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:18,142 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:18,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:18,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:18,354 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:18,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:18,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1106537693, now seen corresponding path program 1 times [2022-01-10 06:21:18,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:18,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799984872] [2022-01-10 06:21:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:18,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:18,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:18,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:21:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:18,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:18,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:18,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:18,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:18,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799984872] [2022-01-10 06:21:18,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799984872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:18,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:18,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:18,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95935251] [2022-01-10 06:21:18,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:18,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:18,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:18,655 INFO L87 Difference]: Start difference. First operand 2142 states and 3681 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:18,764 INFO L93 Difference]: Finished difference Result 5268 states and 9141 transitions. [2022-01-10 06:21:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:18,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2022-01-10 06:21:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:18,779 INFO L225 Difference]: With dead ends: 5268 [2022-01-10 06:21:18,779 INFO L226 Difference]: Without dead ends: 3308 [2022-01-10 06:21:18,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:18,785 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 86 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:18,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2022-01-10 06:21:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3292. [2022-01-10 06:21:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3032 states have (on average 1.720646437994723) internal successors, (5217), 3038 states have internal predecessors, (5217), 230 states have call successors, (230), 27 states have call predecessors, (230), 29 states have return successors, (231), 226 states have call predecessors, (231), 228 states have call successors, (231) [2022-01-10 06:21:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 5678 transitions. [2022-01-10 06:21:18,909 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 5678 transitions. Word has length 98 [2022-01-10 06:21:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:18,909 INFO L470 AbstractCegarLoop]: Abstraction has 3292 states and 5678 transitions. [2022-01-10 06:21:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 5678 transitions. [2022-01-10 06:21:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:21:18,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:18,924 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:18,942 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 06:21:19,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:19,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 108297710, now seen corresponding path program 1 times [2022-01-10 06:21:19,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:19,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282808957] [2022-01-10 06:21:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:19,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:19,138 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:19,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:21:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:19,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:19,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:19,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:19,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:19,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282808957] [2022-01-10 06:21:19,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282808957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:19,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:19,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:19,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662340451] [2022-01-10 06:21:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:19,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:19,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:19,412 INFO L87 Difference]: Start difference. First operand 3292 states and 5678 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:19,545 INFO L93 Difference]: Finished difference Result 8253 states and 14374 transitions. [2022-01-10 06:21:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2022-01-10 06:21:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:19,569 INFO L225 Difference]: With dead ends: 8253 [2022-01-10 06:21:19,569 INFO L226 Difference]: Without dead ends: 5275 [2022-01-10 06:21:19,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:19,578 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 84 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:19,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2022-01-10 06:21:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5259. [2022-01-10 06:21:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 4879 states have (on average 1.7181799549087928) internal successors, (8383), 4885 states have internal predecessors, (8383), 350 states have call successors, (350), 27 states have call predecessors, (350), 29 states have return successors, (351), 346 states have call predecessors, (351), 348 states have call successors, (351) [2022-01-10 06:21:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 9084 transitions. [2022-01-10 06:21:19,823 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 9084 transitions. Word has length 99 [2022-01-10 06:21:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:19,823 INFO L470 AbstractCegarLoop]: Abstraction has 5259 states and 9084 transitions. [2022-01-10 06:21:19,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 9084 transitions. [2022-01-10 06:21:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 06:21:19,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:19,842 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:19,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 06:21:20,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:20,054 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1950903013, now seen corresponding path program 1 times [2022-01-10 06:21:20,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:20,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138208323] [2022-01-10 06:21:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:20,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:20,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:20,056 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:20,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:21:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:20,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:20,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:20,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:20,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:20,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138208323] [2022-01-10 06:21:20,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138208323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:20,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:20,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:20,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556965511] [2022-01-10 06:21:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:20,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:20,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:20,369 INFO L87 Difference]: Start difference. First operand 5259 states and 9084 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:20,601 INFO L93 Difference]: Finished difference Result 13061 states and 22845 transitions. [2022-01-10 06:21:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2022-01-10 06:21:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:20,655 INFO L225 Difference]: With dead ends: 13061 [2022-01-10 06:21:20,656 INFO L226 Difference]: Without dead ends: 8432 [2022-01-10 06:21:20,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:20,670 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 82 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:20,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 671 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8432 states. [2022-01-10 06:21:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8432 to 8416. [2022-01-10 06:21:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 7817 states have (on average 1.7202251503134194) internal successors, (13447), 7823 states have internal predecessors, (13447), 569 states have call successors, (569), 27 states have call predecessors, (569), 29 states have return successors, (570), 565 states have call predecessors, (570), 567 states have call successors, (570) [2022-01-10 06:21:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 14586 transitions. [2022-01-10 06:21:21,105 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 14586 transitions. Word has length 100 [2022-01-10 06:21:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:21,105 INFO L470 AbstractCegarLoop]: Abstraction has 8416 states and 14586 transitions. [2022-01-10 06:21:21,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 14586 transitions. [2022-01-10 06:21:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:21:21,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:21,131 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:21,147 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 06:21:21,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:21,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1936176596, now seen corresponding path program 1 times [2022-01-10 06:21:21,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:21,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130101850] [2022-01-10 06:21:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:21,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:21,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:21,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:21:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:21,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:21,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:21,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:21,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:21,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130101850] [2022-01-10 06:21:21,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130101850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:21,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:21,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:21,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635146987] [2022-01-10 06:21:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:21,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:21,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:21,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:21,682 INFO L87 Difference]: Start difference. First operand 8416 states and 14586 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:22,065 INFO L93 Difference]: Finished difference Result 22180 states and 38805 transitions. [2022-01-10 06:21:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-01-10 06:21:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:22,112 INFO L225 Difference]: With dead ends: 22180 [2022-01-10 06:21:22,112 INFO L226 Difference]: Without dead ends: 14642 [2022-01-10 06:21:22,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:22,131 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 80 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:22,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14642 states. [2022-01-10 06:21:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14642 to 14626. [2022-01-10 06:21:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14626 states, 13613 states have (on average 1.7160067582457945) internal successors, (23360), 13619 states have internal predecessors, (23360), 983 states have call successors, (983), 27 states have call predecessors, (983), 29 states have return successors, (984), 979 states have call predecessors, (984), 981 states have call successors, (984) [2022-01-10 06:21:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14626 states to 14626 states and 25327 transitions. [2022-01-10 06:21:22,736 INFO L78 Accepts]: Start accepts. Automaton has 14626 states and 25327 transitions. Word has length 101 [2022-01-10 06:21:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:22,736 INFO L470 AbstractCegarLoop]: Abstraction has 14626 states and 25327 transitions. [2022-01-10 06:21:22,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14626 states and 25327 transitions. [2022-01-10 06:21:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:21:22,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:22,770 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:22,781 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 06:21:22,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:22,981 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash -186653165, now seen corresponding path program 1 times [2022-01-10 06:21:22,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892569321] [2022-01-10 06:21:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:22,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:22,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:22,984 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:22,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:21:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:23,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:23,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:23,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:23,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:23,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892569321] [2022-01-10 06:21:23,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892569321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:23,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:23,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:23,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223276160] [2022-01-10 06:21:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:23,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:23,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:23,319 INFO L87 Difference]: Start difference. First operand 14626 states and 25327 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:23,901 INFO L93 Difference]: Finished difference Result 34237 states and 59235 transitions. [2022-01-10 06:21:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:23,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2022-01-10 06:21:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:23,972 INFO L225 Difference]: With dead ends: 34237 [2022-01-10 06:21:23,972 INFO L226 Difference]: Without dead ends: 21621 [2022-01-10 06:21:24,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:24,004 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 78 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:24,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 639 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:24,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21621 states. [2022-01-10 06:21:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21621 to 21605. [2022-01-10 06:21:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21605 states, 20592 states have (on average 1.6923076923076923) internal successors, (34848), 20598 states have internal predecessors, (34848), 983 states have call successors, (983), 27 states have call predecessors, (983), 29 states have return successors, (984), 979 states have call predecessors, (984), 981 states have call successors, (984) [2022-01-10 06:21:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21605 states to 21605 states and 36815 transitions. [2022-01-10 06:21:24,931 INFO L78 Accepts]: Start accepts. Automaton has 21605 states and 36815 transitions. Word has length 102 [2022-01-10 06:21:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:24,931 INFO L470 AbstractCegarLoop]: Abstraction has 21605 states and 36815 transitions. [2022-01-10 06:21:24,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 21605 states and 36815 transitions. [2022-01-10 06:21:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:21:24,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:24,989 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:25,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:25,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:25,201 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2064010262, now seen corresponding path program 1 times [2022-01-10 06:21:25,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:25,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657780637] [2022-01-10 06:21:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:25,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:25,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:25,203 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:25,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:21:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:25,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:25,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:25,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:25,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:25,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657780637] [2022-01-10 06:21:25,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657780637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:25,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:25,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:25,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508221820] [2022-01-10 06:21:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:25,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:25,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:25,518 INFO L87 Difference]: Start difference. First operand 21605 states and 36815 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:26,415 INFO L93 Difference]: Finished difference Result 58887 states and 100818 transitions. [2022-01-10 06:21:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2022-01-10 06:21:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:26,546 INFO L225 Difference]: With dead ends: 58887 [2022-01-10 06:21:26,546 INFO L226 Difference]: Without dead ends: 39733 [2022-01-10 06:21:26,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:26,589 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 76 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:26,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39733 states. [2022-01-10 06:21:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39733 to 39717. [2022-01-10 06:21:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39717 states, 37903 states have (on average 1.680843205023349) internal successors, (63709), 37909 states have internal predecessors, (63709), 1784 states have call successors, (1784), 27 states have call predecessors, (1784), 29 states have return successors, (1785), 1780 states have call predecessors, (1785), 1782 states have call successors, (1785) [2022-01-10 06:21:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39717 states to 39717 states and 67278 transitions. [2022-01-10 06:21:28,185 INFO L78 Accepts]: Start accepts. Automaton has 39717 states and 67278 transitions. Word has length 103 [2022-01-10 06:21:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:28,185 INFO L470 AbstractCegarLoop]: Abstraction has 39717 states and 67278 transitions. [2022-01-10 06:21:28,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 39717 states and 67278 transitions. [2022-01-10 06:21:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:21:28,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:28,230 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:28,246 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 06:21:28,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:28,446 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1742233993, now seen corresponding path program 2 times [2022-01-10 06:21:28,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:28,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406630734] [2022-01-10 06:21:28,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:21:28,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:28,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:28,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:28,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:21:28,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:21:28,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:21:28,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:21:28,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 06:21:28,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:28,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:28,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406630734] [2022-01-10 06:21:28,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406630734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:28,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:28,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:21:28,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723879907] [2022-01-10 06:21:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:28,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:28,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:28,803 INFO L87 Difference]: Start difference. First operand 39717 states and 67278 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:30,504 INFO L93 Difference]: Finished difference Result 77042 states and 130677 transitions. [2022-01-10 06:21:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:21:30,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2022-01-10 06:21:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:30,775 INFO L225 Difference]: With dead ends: 77042 [2022-01-10 06:21:30,776 INFO L226 Difference]: Without dead ends: 76794 [2022-01-10 06:21:30,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:21:30,817 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 379 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:30,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1446 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:21:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76794 states. [2022-01-10 06:21:33,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76794 to 76646. [2022-01-10 06:21:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76646 states, 73160 states have (on average 1.6845270639693821) internal successors, (123240), 73170 states have internal predecessors, (123240), 3430 states have call successors, (3430), 53 states have call predecessors, (3430), 55 states have return successors, (3429), 3422 states have call predecessors, (3429), 3426 states have call successors, (3429) [2022-01-10 06:21:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76646 states to 76646 states and 130099 transitions. [2022-01-10 06:21:33,784 INFO L78 Accepts]: Start accepts. Automaton has 76646 states and 130099 transitions. Word has length 103 [2022-01-10 06:21:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:33,784 INFO L470 AbstractCegarLoop]: Abstraction has 76646 states and 130099 transitions. [2022-01-10 06:21:33,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 76646 states and 130099 transitions. [2022-01-10 06:21:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:21:33,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:33,861 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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] [2022-01-10 06:21:33,873 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 06:21:34,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:34,072 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -86581145, now seen corresponding path program 1 times [2022-01-10 06:21:34,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:34,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533704590] [2022-01-10 06:21:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:34,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:34,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:34,074 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:34,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:21:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:34,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:34,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:21:34,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:34,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:34,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533704590] [2022-01-10 06:21:34,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533704590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:34,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:34,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:34,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167432397] [2022-01-10 06:21:34,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:34,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:34,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:34,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:34,395 INFO L87 Difference]: Start difference. First operand 76646 states and 130099 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:36,757 INFO L93 Difference]: Finished difference Result 148876 states and 253245 transitions. [2022-01-10 06:21:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2022-01-10 06:21:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:37,002 INFO L225 Difference]: With dead ends: 148876 [2022-01-10 06:21:37,003 INFO L226 Difference]: Without dead ends: 76678 [2022-01-10 06:21:37,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:37,130 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 91 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:37,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 775 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76678 states. [2022-01-10 06:21:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76678 to 76646. [2022-01-10 06:21:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76646 states, 73160 states have (on average 1.6703663203936578) internal successors, (122204), 73170 states have internal predecessors, (122204), 3430 states have call successors, (3430), 53 states have call predecessors, (3430), 55 states have return successors, (3429), 3422 states have call predecessors, (3429), 3426 states have call successors, (3429) [2022-01-10 06:21:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76646 states to 76646 states and 129063 transitions. [2022-01-10 06:21:39,844 INFO L78 Accepts]: Start accepts. Automaton has 76646 states and 129063 transitions. Word has length 104 [2022-01-10 06:21:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:39,845 INFO L470 AbstractCegarLoop]: Abstraction has 76646 states and 129063 transitions. [2022-01-10 06:21:39,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 76646 states and 129063 transitions. [2022-01-10 06:21:39,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:21:39,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:39,916 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:39,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:40,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:40,127 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1001697425, now seen corresponding path program 1 times [2022-01-10 06:21:40,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:40,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640552391] [2022-01-10 06:21:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:40,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:40,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:40,129 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:40,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:21:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:40,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:40,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:40,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:40,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:40,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640552391] [2022-01-10 06:21:40,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640552391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:40,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:40,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:40,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439967858] [2022-01-10 06:21:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:40,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:40,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:40,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:40,450 INFO L87 Difference]: Start difference. First operand 76646 states and 129063 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:44,143 INFO L93 Difference]: Finished difference Result 218611 states and 368660 transitions. [2022-01-10 06:21:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:44,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 105 [2022-01-10 06:21:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:44,621 INFO L225 Difference]: With dead ends: 218611 [2022-01-10 06:21:44,621 INFO L226 Difference]: Without dead ends: 146223 [2022-01-10 06:21:44,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:44,858 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 74 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:44,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146223 states. [2022-01-10 06:21:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146223 to 146191. [2022-01-10 06:21:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146191 states, 139591 states have (on average 1.6544404725233002) internal successors, (230945), 139601 states have internal predecessors, (230945), 6544 states have call successors, (6544), 53 states have call predecessors, (6544), 55 states have return successors, (6543), 6536 states have call predecessors, (6543), 6540 states have call successors, (6543) [2022-01-10 06:21:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146191 states to 146191 states and 244032 transitions. [2022-01-10 06:21:49,995 INFO L78 Accepts]: Start accepts. Automaton has 146191 states and 244032 transitions. Word has length 105 [2022-01-10 06:21:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:49,995 INFO L470 AbstractCegarLoop]: Abstraction has 146191 states and 244032 transitions. [2022-01-10 06:21:49,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 146191 states and 244032 transitions. [2022-01-10 06:21:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 06:21:50,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:50,086 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:21:50,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:50,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:50,296 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2134876074, now seen corresponding path program 1 times [2022-01-10 06:21:50,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:50,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150107552] [2022-01-10 06:21:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:50,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:50,299 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:50,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:21:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:50,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:50,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:21:50,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:50,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:50,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150107552] [2022-01-10 06:21:50,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150107552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:50,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:50,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:50,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563767127] [2022-01-10 06:21:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:50,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:50,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:50,588 INFO L87 Difference]: Start difference. First operand 146191 states and 244032 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 06:21:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:56,563 INFO L93 Difference]: Finished difference Result 282852 states and 471480 transitions. [2022-01-10 06:21:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 106 [2022-01-10 06:21:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:57,546 INFO L225 Difference]: With dead ends: 282852 [2022-01-10 06:21:57,546 INFO L226 Difference]: Without dead ends: 282324 [2022-01-10 06:21:57,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:57,635 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 72 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:57,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282324 states. [2022-01-10 06:22:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282324 to 282292.