/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_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:24:48,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:24:48,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:24:48,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:24:48,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:24:48,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:24:48,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:24:48,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:24:48,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:24:48,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:24:48,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:24:48,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:24:48,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:24:48,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:24:48,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:24:48,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:24:48,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:24:48,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:24:48,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:24:48,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:24:48,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:24:48,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:24:48,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:24:48,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:24:48,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:24:48,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:24:48,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:24:48,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:24:48,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:24:48,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:24:48,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:24:48,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:24:48,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:24:48,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:24:48,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:24:48,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:24:48,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:24:48,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:24:48,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:24:48,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:24:48,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:24:48,206 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 06:24:48,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:24:48,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:24:48,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:24:48,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:24:48,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:24:48,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:24:48,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:24:48,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:24:48,242 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:24:48,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:24:48,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:24:48,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:24:48,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:24:48,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:24:48,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:24:48,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:24:48,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:24:48,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:24:48,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:24:48,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:24:48,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:24:48,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:24:48,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:24:48,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:24:48,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:24:48,515 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:24:48,516 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:24:48,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c [2022-01-10 06:24:48,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d367819/6ff70d3682fe49c89e6f5ce669e2bb0b/FLAG3b35ad34e [2022-01-10 06:24:49,130 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:24:49,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c [2022-01-10 06:24:49,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d367819/6ff70d3682fe49c89e6f5ce669e2bb0b/FLAG3b35ad34e [2022-01-10 06:24:49,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d367819/6ff70d3682fe49c89e6f5ce669e2bb0b [2022-01-10 06:24:49,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:24:49,563 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:24:49,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:24:49,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:24:49,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:24:49,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:24:49" (1/1) ... [2022-01-10 06:24:49,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34009bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:49, skipping insertion in model container [2022-01-10 06:24:49,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:24:49" (1/1) ... [2022-01-10 06:24:49,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:24:49,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:24:50,089 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_spec3_product29.cil.c[49640,49653] [2022-01-10 06:24:50,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:24:50,168 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:24:50,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:24:50,232 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_spec3_product29.cil.c[49640,49653] [2022-01-10 06:24:50,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:24:50,254 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:24:50,333 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_spec3_product29.cil.c[49640,49653] [2022-01-10 06:24:50,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:24:50,400 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:24:50,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50 WrapperNode [2022-01-10 06:24:50,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:24:50,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:24:50,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:24:50,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:24:50,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,503 INFO L137 Inliner]: procedures = 134, calls = 236, calls flagged for inlining = 55, calls inlined = 47, statements flattened = 899 [2022-01-10 06:24:50,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:24:50,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:24:50,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:24:50,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:24:50,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:24:50,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:24:50,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:24:50,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:24:50,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (1/1) ... [2022-01-10 06:24:50,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:24:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:24:50,643 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 06:24:50,661 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 06:24:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:24:50,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:24:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-01-10 06:24:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-01-10 06:24:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:24:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:24:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-01-10 06:24:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-01-10 06:24:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:24:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:24:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:24:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:24:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:24:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:24:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:24:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:24:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:24:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:24:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:24:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:24:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:24:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:24:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:24:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:24:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:24:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:24:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:24:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:24:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-01-10 06:24:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-01-10 06:24:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:24:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:24:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:24:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:24:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:24:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:24:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:24:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:24:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:24:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-01-10 06:24:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-01-10 06:24:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:24:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:24:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:24:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:24:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:24:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:24:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:24:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:24:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:24:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:24:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:24:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:24:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-01-10 06:24:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-01-10 06:24:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:24:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:24:50,934 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:24:50,936 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:24:51,597 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:24:51,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:24:51,610 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:24:51,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:24:51 BoogieIcfgContainer [2022-01-10 06:24:51,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:24:51,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:24:51,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:24:51,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:24:51,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:24:49" (1/3) ... [2022-01-10 06:24:51,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b5ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:24:51, skipping insertion in model container [2022-01-10 06:24:51,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:24:50" (2/3) ... [2022-01-10 06:24:51,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b5ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:24:51, skipping insertion in model container [2022-01-10 06:24:51,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:24:51" (3/3) ... [2022-01-10 06:24:51,620 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product29.cil.c [2022-01-10 06:24:51,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:24:51,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:24:51,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:24:51,682 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 06:24:51,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:24:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 419 states, 320 states have (on average 1.55) internal successors, (496), 327 states have internal predecessors, (496), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-10 06:24:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:24:51,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:51,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:51,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:51,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1911849213, now seen corresponding path program 1 times [2022-01-10 06:24:51,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:51,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010794296] [2022-01-10 06:24:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:51,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:51,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:51,753 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 06:24:51,755 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 06:24:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:52,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:24:52,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 06:24:52,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:52,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:52,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010794296] [2022-01-10 06:24:52,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010794296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:52,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:52,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:24:52,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982024862] [2022-01-10 06:24:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:52,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:24:52,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:24:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:24:52,462 INFO L87 Difference]: Start difference. First operand has 419 states, 320 states have (on average 1.55) internal successors, (496), 327 states have internal predecessors, (496), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:24:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:52,518 INFO L93 Difference]: Finished difference Result 649 states and 962 transitions. [2022-01-10 06:24:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:24:52,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2022-01-10 06:24:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:52,535 INFO L225 Difference]: With dead ends: 649 [2022-01-10 06:24:52,535 INFO L226 Difference]: Without dead ends: 411 [2022-01-10 06:24:52,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 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 06:24:52,547 INFO L933 BasicCegarLoop]: 626 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, 626 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 06:24:52,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-01-10 06:24:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2022-01-10 06:24:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 314 states have (on average 1.5445859872611465) internal successors, (485), 319 states have internal predecessors, (485), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-10 06:24:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 618 transitions. [2022-01-10 06:24:52,649 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 618 transitions. Word has length 139 [2022-01-10 06:24:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:52,651 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 618 transitions. [2022-01-10 06:24:52,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:24:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 618 transitions. [2022-01-10 06:24:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:24:52,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:52,672 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:52,689 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 06:24:52,886 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 06:24:52,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:52,888 INFO L85 PathProgramCache]: Analyzing trace with hash 753348196, now seen corresponding path program 1 times [2022-01-10 06:24:52,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:52,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452894869] [2022-01-10 06:24:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:52,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:52,890 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 06:24:52,892 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 06:24:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:53,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:53,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:24:53,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:53,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:53,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452894869] [2022-01-10 06:24:53,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452894869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:53,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:53,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:53,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107950812] [2022-01-10 06:24:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:53,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:53,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:53,493 INFO L87 Difference]: Start difference. First operand 411 states and 618 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:24:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:53,578 INFO L93 Difference]: Finished difference Result 813 states and 1226 transitions. [2022-01-10 06:24:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:53,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2022-01-10 06:24:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:53,586 INFO L225 Difference]: With dead ends: 813 [2022-01-10 06:24:53,587 INFO L226 Difference]: Without dead ends: 413 [2022-01-10 06:24:53,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 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 06:24:53,590 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 144 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2270 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 06:24:53,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2270 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-10 06:24:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-01-10 06:24:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 315 states have (on average 1.542857142857143) internal successors, (486), 321 states have internal predecessors, (486), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (67), 64 states have call predecessors, (67), 65 states have call successors, (67) [2022-01-10 06:24:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 621 transitions. [2022-01-10 06:24:53,629 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 621 transitions. Word has length 140 [2022-01-10 06:24:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:53,629 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 621 transitions. [2022-01-10 06:24:53,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:24:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 621 transitions. [2022-01-10 06:24:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 06:24:53,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:53,633 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:53,647 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 06:24:53,845 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 06:24:53,845 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1726945568, now seen corresponding path program 1 times [2022-01-10 06:24:53,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:53,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176417427] [2022-01-10 06:24:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:53,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:53,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:53,849 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 06:24:53,850 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 06:24:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:54,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:24:54,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:54,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:54,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176417427] [2022-01-10 06:24:54,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176417427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:54,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:54,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:54,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631553523] [2022-01-10 06:24:54,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:54,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:54,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:54,452 INFO L87 Difference]: Start difference. First operand 413 states and 621 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:24:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:54,574 INFO L93 Difference]: Finished difference Result 815 states and 1230 transitions. [2022-01-10 06:24:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2022-01-10 06:24:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:54,579 INFO L225 Difference]: With dead ends: 815 [2022-01-10 06:24:54,580 INFO L226 Difference]: Without dead ends: 415 [2022-01-10 06:24:54,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 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 06:24:54,584 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 143 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:54,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2259 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:54,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-10 06:24:54,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-01-10 06:24:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 316 states have (on average 1.5411392405063291) internal successors, (487), 323 states have internal predecessors, (487), 68 states have call successors, (68), 29 states have call predecessors, (68), 30 states have return successors, (71), 64 states have call predecessors, (71), 65 states have call successors, (71) [2022-01-10 06:24:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 626 transitions. [2022-01-10 06:24:54,613 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 626 transitions. Word has length 141 [2022-01-10 06:24:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:54,615 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 626 transitions. [2022-01-10 06:24:54,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:24:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 626 transitions. [2022-01-10 06:24:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 06:24:54,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:54,618 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:54,638 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 06:24:54,832 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 06:24:54,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -383209987, now seen corresponding path program 1 times [2022-01-10 06:24:54,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:54,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258641401] [2022-01-10 06:24:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:54,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:54,837 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 06:24:54,841 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 06:24:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:55,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:24:55,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:55,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258641401] [2022-01-10 06:24:55,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258641401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:55,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:55,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:55,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311534259] [2022-01-10 06:24:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:55,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:55,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:55,404 INFO L87 Difference]: Start difference. First operand 415 states and 626 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:24:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:55,466 INFO L93 Difference]: Finished difference Result 807 states and 1220 transitions. [2022-01-10 06:24:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 161 [2022-01-10 06:24:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:55,470 INFO L225 Difference]: With dead ends: 807 [2022-01-10 06:24:55,470 INFO L226 Difference]: Without dead ends: 415 [2022-01-10 06:24:55,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 06:24:55,472 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 142 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 2273 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 06:24:55,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 2273 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-10 06:24:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-01-10 06:24:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 316 states have (on average 1.5411392405063291) internal successors, (487), 323 states have internal predecessors, (487), 68 states have call successors, (68), 29 states have call predecessors, (68), 30 states have return successors, (70), 64 states have call predecessors, (70), 65 states have call successors, (70) [2022-01-10 06:24:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 625 transitions. [2022-01-10 06:24:55,489 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 625 transitions. Word has length 161 [2022-01-10 06:24:55,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:55,489 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 625 transitions. [2022-01-10 06:24:55,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:24:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 625 transitions. [2022-01-10 06:24:55,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:24:55,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:55,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:55,505 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 06:24:55,705 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 06:24:55,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash 39488522, now seen corresponding path program 1 times [2022-01-10 06:24:55,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:55,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599896561] [2022-01-10 06:24:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:55,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:55,710 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 06:24:55,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:24:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:55,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:55,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:24:56,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:56,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599896561] [2022-01-10 06:24:56,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599896561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:56,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:56,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:56,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380597662] [2022-01-10 06:24:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:56,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:56,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:56,176 INFO L87 Difference]: Start difference. First operand 415 states and 625 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:24:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:56,246 INFO L93 Difference]: Finished difference Result 809 states and 1223 transitions. [2022-01-10 06:24:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:56,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2022-01-10 06:24:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:56,251 INFO L225 Difference]: With dead ends: 809 [2022-01-10 06:24:56,251 INFO L226 Difference]: Without dead ends: 417 [2022-01-10 06:24:56,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 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 06:24:56,253 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 140 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2275 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 06:24:56,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 2275 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-10 06:24:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-01-10 06:24:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 317 states have (on average 1.5394321766561514) internal successors, (488), 325 states have internal predecessors, (488), 68 states have call successors, (68), 29 states have call predecessors, (68), 31 states have return successors, (72), 64 states have call predecessors, (72), 65 states have call successors, (72) [2022-01-10 06:24:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 628 transitions. [2022-01-10 06:24:56,275 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 628 transitions. Word has length 143 [2022-01-10 06:24:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:56,276 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 628 transitions. [2022-01-10 06:24:56,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:24:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 628 transitions. [2022-01-10 06:24:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 06:24:56,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:56,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:56,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:56,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:56,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash -660863102, now seen corresponding path program 1 times [2022-01-10 06:24:56,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:56,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189481630] [2022-01-10 06:24:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:56,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:56,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:56,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:56,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:24:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:56,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:56,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:24:57,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:57,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:57,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189481630] [2022-01-10 06:24:57,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189481630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:57,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:57,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:57,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925123557] [2022-01-10 06:24:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:57,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:57,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:57,054 INFO L87 Difference]: Start difference. First operand 417 states and 628 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:24:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:57,124 INFO L93 Difference]: Finished difference Result 807 states and 1218 transitions. [2022-01-10 06:24:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 163 [2022-01-10 06:24:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:57,127 INFO L225 Difference]: With dead ends: 807 [2022-01-10 06:24:57,127 INFO L226 Difference]: Without dead ends: 417 [2022-01-10 06:24:57,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 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 06:24:57,129 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 141 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:57,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 2262 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-10 06:24:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-01-10 06:24:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 317 states have (on average 1.5394321766561514) internal successors, (488), 325 states have internal predecessors, (488), 68 states have call successors, (68), 29 states have call predecessors, (68), 31 states have return successors, (71), 64 states have call predecessors, (71), 65 states have call successors, (71) [2022-01-10 06:24:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 627 transitions. [2022-01-10 06:24:57,144 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 627 transitions. Word has length 163 [2022-01-10 06:24:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:57,145 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 627 transitions. [2022-01-10 06:24:57,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:24:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 627 transitions. [2022-01-10 06:24:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 06:24:57,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:57,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:57,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:57,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:57,362 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1487860462, now seen corresponding path program 2 times [2022-01-10 06:24:57,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778136463] [2022-01-10 06:24:57,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:24:57,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:57,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:57,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:24:57,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:24:57,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:24:57,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:57,781 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 06:24:57,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:57,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778136463] [2022-01-10 06:24:57,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778136463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:57,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:57,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:57,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59022178] [2022-01-10 06:24:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:57,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:57,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:57,783 INFO L87 Difference]: Start difference. First operand 417 states and 627 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:24:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:57,803 INFO L93 Difference]: Finished difference Result 644 states and 945 transitions. [2022-01-10 06:24:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:57,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 164 [2022-01-10 06:24:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:57,806 INFO L225 Difference]: With dead ends: 644 [2022-01-10 06:24:57,807 INFO L226 Difference]: Without dead ends: 420 [2022-01-10 06:24:57,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:57,808 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:57,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1230 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-10 06:24:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2022-01-10 06:24:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 319 states have (on average 1.536050156739812) internal successors, (490), 327 states have internal predecessors, (490), 68 states have call successors, (68), 29 states have call predecessors, (68), 31 states have return successors, (71), 64 states have call predecessors, (71), 65 states have call successors, (71) [2022-01-10 06:24:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 629 transitions. [2022-01-10 06:24:57,824 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 629 transitions. Word has length 164 [2022-01-10 06:24:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:57,825 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 629 transitions. [2022-01-10 06:24:57,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:24:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 629 transitions. [2022-01-10 06:24:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-10 06:24:57,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:57,828 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:57,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:58,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:58,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2007969029, now seen corresponding path program 1 times [2022-01-10 06:24:58,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:58,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446440624] [2022-01-10 06:24:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:58,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:58,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:58,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:24:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:58,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:58,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 06:24:58,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:58,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:58,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446440624] [2022-01-10 06:24:58,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446440624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:58,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:58,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:58,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138225115] [2022-01-10 06:24:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:58,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:58,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:58,556 INFO L87 Difference]: Start difference. First operand 419 states and 629 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:24:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:58,650 INFO L93 Difference]: Finished difference Result 813 states and 1227 transitions. [2022-01-10 06:24:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:58,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 170 [2022-01-10 06:24:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:58,654 INFO L225 Difference]: With dead ends: 813 [2022-01-10 06:24:58,654 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 06:24:58,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 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 06:24:58,667 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 139 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:58,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 2264 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 06:24:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2022-01-10 06:24:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 320 states have (on average 1.534375) internal successors, (491), 329 states have internal predecessors, (491), 68 states have call successors, (68), 29 states have call predecessors, (68), 32 states have return successors, (75), 64 states have call predecessors, (75), 65 states have call successors, (75) [2022-01-10 06:24:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 634 transitions. [2022-01-10 06:24:58,683 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 634 transitions. Word has length 170 [2022-01-10 06:24:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:58,684 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 634 transitions. [2022-01-10 06:24:58,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 06:24:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 634 transitions. [2022-01-10 06:24:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:24:58,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:58,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:58,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:58,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:58,902 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1352436331, now seen corresponding path program 1 times [2022-01-10 06:24:58,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:58,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686726099] [2022-01-10 06:24:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:58,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:58,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:58,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:58,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:24:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:59,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:59,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:24:59,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:59,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:59,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686726099] [2022-01-10 06:24:59,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686726099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:59,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:59,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:59,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9673434] [2022-01-10 06:24:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:59,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:59,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:59,404 INFO L87 Difference]: Start difference. First operand 421 states and 634 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:24:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:59,430 INFO L93 Difference]: Finished difference Result 881 states and 1346 transitions. [2022-01-10 06:24:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:59,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2022-01-10 06:24:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:59,433 INFO L225 Difference]: With dead ends: 881 [2022-01-10 06:24:59,434 INFO L226 Difference]: Without dead ends: 491 [2022-01-10 06:24:59,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:59,436 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 126 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:59,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1213 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-10 06:24:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 483. [2022-01-10 06:24:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 368 states have (on average 1.5543478260869565) internal successors, (572), 377 states have internal predecessors, (572), 82 states have call successors, (82), 29 states have call predecessors, (82), 32 states have return successors, (91), 78 states have call predecessors, (91), 79 states have call successors, (91) [2022-01-10 06:24:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 745 transitions. [2022-01-10 06:24:59,453 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 745 transitions. Word has length 152 [2022-01-10 06:24:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:59,453 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 745 transitions. [2022-01-10 06:24:59,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:24:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 745 transitions. [2022-01-10 06:24:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 06:24:59,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:59,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:59,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:59,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:59,669 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1094231709, now seen corresponding path program 1 times [2022-01-10 06:24:59,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:59,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382638386] [2022-01-10 06:24:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:59,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:59,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:59,753 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 06:25:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:00,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:25:00,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 06:25:00,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:25:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 06:25:00,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:00,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382638386] [2022-01-10 06:25:00,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382638386] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:25:00,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:25:00,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:25:00,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534477802] [2022-01-10 06:25:00,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:25:00,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:25:00,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:00,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:25:00,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:25:00,538 INFO L87 Difference]: Start difference. First operand 483 states and 745 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-01-10 06:25:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:00,828 INFO L93 Difference]: Finished difference Result 1124 states and 1793 transitions. [2022-01-10 06:25:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:25:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 172 [2022-01-10 06:25:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:00,835 INFO L225 Difference]: With dead ends: 1124 [2022-01-10 06:25:00,835 INFO L226 Difference]: Without dead ends: 900 [2022-01-10 06:25:00,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 338 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 06:25:00,837 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 459 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:00,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 2742 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:25:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-01-10 06:25:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 876. [2022-01-10 06:25:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 682 states have (on average 1.6202346041055717) internal successors, (1105), 691 states have internal predecessors, (1105), 161 states have call successors, (161), 29 states have call predecessors, (161), 32 states have return successors, (180), 157 states have call predecessors, (180), 158 states have call successors, (180) [2022-01-10 06:25:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1446 transitions. [2022-01-10 06:25:00,888 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1446 transitions. Word has length 172 [2022-01-10 06:25:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:00,889 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1446 transitions. [2022-01-10 06:25:00,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-01-10 06:25:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1446 transitions. [2022-01-10 06:25:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 06:25:00,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:00,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:00,915 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 06:25:01,115 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 06:25:01,116 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1060985824, now seen corresponding path program 1 times [2022-01-10 06:25:01,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:01,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837077124] [2022-01-10 06:25:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:01,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:01,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:01,119 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 06:25:01,120 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 06:25:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:01,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:01,642 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 06:25:01,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:01,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:01,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837077124] [2022-01-10 06:25:01,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837077124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:01,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:01,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158989400] [2022-01-10 06:25:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:01,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:01,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:01,644 INFO L87 Difference]: Start difference. First operand 876 states and 1446 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:01,711 INFO L93 Difference]: Finished difference Result 2082 states and 3489 transitions. [2022-01-10 06:25:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2022-01-10 06:25:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:01,719 INFO L225 Difference]: With dead ends: 2082 [2022-01-10 06:25:01,720 INFO L226 Difference]: Without dead ends: 1274 [2022-01-10 06:25:01,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 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 06:25:01,724 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 124 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:01,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1258 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-10 06:25:01,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1266. [2022-01-10 06:25:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 993 states have (on average 1.636455186304129) internal successors, (1625), 1002 states have internal predecessors, (1625), 240 states have call successors, (240), 29 states have call predecessors, (240), 32 states have return successors, (269), 236 states have call predecessors, (269), 237 states have call successors, (269) [2022-01-10 06:25:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2134 transitions. [2022-01-10 06:25:01,786 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2134 transitions. Word has length 178 [2022-01-10 06:25:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:01,786 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 2134 transitions. [2022-01-10 06:25:01,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2134 transitions. [2022-01-10 06:25:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 06:25:01,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:01,794 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:01,809 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 06:25:02,009 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 06:25:02,009 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1446004309, now seen corresponding path program 1 times [2022-01-10 06:25:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:02,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173850033] [2022-01-10 06:25:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:02,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:02,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:02,011 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 06:25:02,013 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 06:25:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:02,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:02,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:02,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:02,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173850033] [2022-01-10 06:25:02,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173850033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:02,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:02,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:02,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898934182] [2022-01-10 06:25:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:02,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:02,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:02,482 INFO L87 Difference]: Start difference. First operand 1266 states and 2134 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:25:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:02,565 INFO L93 Difference]: Finished difference Result 3031 states and 5147 transitions. [2022-01-10 06:25:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:02,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2022-01-10 06:25:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:02,580 INFO L225 Difference]: With dead ends: 3031 [2022-01-10 06:25:02,580 INFO L226 Difference]: Without dead ends: 1886 [2022-01-10 06:25:02,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 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 06:25:02,587 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 122 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1245 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 06:25:02,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1245 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2022-01-10 06:25:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1878. [2022-01-10 06:25:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1486 states have (on average 1.6473755047106327) internal successors, (2448), 1495 states have internal predecessors, (2448), 359 states have call successors, (359), 29 states have call predecessors, (359), 32 states have return successors, (388), 355 states have call predecessors, (388), 356 states have call successors, (388) [2022-01-10 06:25:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3195 transitions. [2022-01-10 06:25:02,689 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3195 transitions. Word has length 160 [2022-01-10 06:25:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:02,690 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 3195 transitions. [2022-01-10 06:25:02,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:25:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3195 transitions. [2022-01-10 06:25:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 06:25:02,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:02,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:02,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:02,920 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 06:25:02,921 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1980554946, now seen corresponding path program 1 times [2022-01-10 06:25:02,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:02,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904424495] [2022-01-10 06:25:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:02,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:02,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:02,923 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 06:25:02,924 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 06:25:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:03,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:03,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:03,434 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 06:25:03,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:03,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:03,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904424495] [2022-01-10 06:25:03,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904424495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:03,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:03,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:03,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429139864] [2022-01-10 06:25:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:03,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:03,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:03,436 INFO L87 Difference]: Start difference. First operand 1878 states and 3195 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:03,554 INFO L93 Difference]: Finished difference Result 4456 states and 7647 transitions. [2022-01-10 06:25:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:03,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 180 [2022-01-10 06:25:03,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:03,568 INFO L225 Difference]: With dead ends: 4456 [2022-01-10 06:25:03,568 INFO L226 Difference]: Without dead ends: 2824 [2022-01-10 06:25:03,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 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 06:25:03,575 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 120 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:03,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1240 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2022-01-10 06:25:03,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2816. [2022-01-10 06:25:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2262 states have (on average 1.65605658709107) internal successors, (3746), 2271 states have internal predecessors, (3746), 521 states have call successors, (521), 29 states have call predecessors, (521), 32 states have return successors, (566), 517 states have call predecessors, (566), 518 states have call successors, (566) [2022-01-10 06:25:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4833 transitions. [2022-01-10 06:25:03,708 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4833 transitions. Word has length 180 [2022-01-10 06:25:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:03,708 INFO L470 AbstractCegarLoop]: Abstraction has 2816 states and 4833 transitions. [2022-01-10 06:25:03,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4833 transitions. [2022-01-10 06:25:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-10 06:25:03,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:03,725 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:03,739 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 06:25:03,940 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 06:25:03,940 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1895120099, now seen corresponding path program 1 times [2022-01-10 06:25:03,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:03,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923329722] [2022-01-10 06:25:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:03,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:03,942 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 06:25:03,956 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 06:25:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:04,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:04,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:04,431 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 06:25:04,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:04,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:04,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923329722] [2022-01-10 06:25:04,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923329722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:04,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:04,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:04,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598915512] [2022-01-10 06:25:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:04,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:04,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:04,433 INFO L87 Difference]: Start difference. First operand 2816 states and 4833 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:04,582 INFO L93 Difference]: Finished difference Result 6705 states and 11599 transitions. [2022-01-10 06:25:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2022-01-10 06:25:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:04,609 INFO L225 Difference]: With dead ends: 6705 [2022-01-10 06:25:04,609 INFO L226 Difference]: Without dead ends: 4339 [2022-01-10 06:25:04,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 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 06:25:04,623 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 118 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:04,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1240 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2022-01-10 06:25:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 4331. [2022-01-10 06:25:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 3532 states have (on average 1.6622310305775765) internal successors, (5871), 3541 states have internal predecessors, (5871), 766 states have call successors, (766), 29 states have call predecessors, (766), 32 states have return successors, (837), 762 states have call predecessors, (837), 763 states have call successors, (837) [2022-01-10 06:25:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 7474 transitions. [2022-01-10 06:25:04,875 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 7474 transitions. Word has length 181 [2022-01-10 06:25:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:04,875 INFO L470 AbstractCegarLoop]: Abstraction has 4331 states and 7474 transitions. [2022-01-10 06:25:04,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 7474 transitions. [2022-01-10 06:25:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 06:25:04,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:04,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:04,912 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 06:25:05,113 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 06:25:05,113 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1358906425, now seen corresponding path program 1 times [2022-01-10 06:25:05,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:05,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404312470] [2022-01-10 06:25:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:05,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:05,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:05,116 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 06:25:05,122 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 06:25:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:05,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:05,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:05,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:05,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:05,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404312470] [2022-01-10 06:25:05,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404312470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:05,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:05,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:05,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483005098] [2022-01-10 06:25:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:05,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:05,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:05,615 INFO L87 Difference]: Start difference. First operand 4331 states and 7474 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:25:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:05,882 INFO L93 Difference]: Finished difference Result 10721 states and 18611 transitions. [2022-01-10 06:25:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-01-10 06:25:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:05,928 INFO L225 Difference]: With dead ends: 10721 [2022-01-10 06:25:05,929 INFO L226 Difference]: Without dead ends: 7072 [2022-01-10 06:25:05,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 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 06:25:05,951 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 116 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1253 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 06:25:05,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1253 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2022-01-10 06:25:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7064. [2022-01-10 06:25:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7064 states, 5772 states have (on average 1.659043659043659) internal successors, (9576), 5781 states have internal predecessors, (9576), 1259 states have call successors, (1259), 29 states have call predecessors, (1259), 32 states have return successors, (1374), 1255 states have call predecessors, (1374), 1256 states have call successors, (1374) [2022-01-10 06:25:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7064 states to 7064 states and 12209 transitions. [2022-01-10 06:25:06,444 INFO L78 Accepts]: Start accepts. Automaton has 7064 states and 12209 transitions. Word has length 163 [2022-01-10 06:25:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:06,445 INFO L470 AbstractCegarLoop]: Abstraction has 7064 states and 12209 transitions. [2022-01-10 06:25:06,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:25:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7064 states and 12209 transitions. [2022-01-10 06:25:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 06:25:06,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:06,485 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:06,499 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 06:25:06,699 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 06:25:06,700 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1055729191, now seen corresponding path program 1 times [2022-01-10 06:25:06,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810753638] [2022-01-10 06:25:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:06,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:06,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:06,702 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 06:25:06,703 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 06:25:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:06,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:06,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:07,140 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 06:25:07,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:07,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:07,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810753638] [2022-01-10 06:25:07,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810753638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:07,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:07,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:07,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731341956] [2022-01-10 06:25:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:07,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:07,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:07,142 INFO L87 Difference]: Start difference. First operand 7064 states and 12209 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:07,561 INFO L93 Difference]: Finished difference Result 17861 states and 31072 transitions. [2022-01-10 06:25:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:07,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2022-01-10 06:25:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:07,630 INFO L225 Difference]: With dead ends: 17861 [2022-01-10 06:25:07,630 INFO L226 Difference]: Without dead ends: 11856 [2022-01-10 06:25:07,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 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 06:25:07,659 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 114 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1253 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 06:25:07,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1253 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2022-01-10 06:25:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 11848. [2022-01-10 06:25:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 9734 states have (on average 1.6595438668584344) internal successors, (16154), 9743 states have internal predecessors, (16154), 2081 states have call successors, (2081), 29 states have call predecessors, (2081), 32 states have return successors, (2274), 2077 states have call predecessors, (2274), 2078 states have call successors, (2274) [2022-01-10 06:25:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 20509 transitions. [2022-01-10 06:25:08,293 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 20509 transitions. Word has length 183 [2022-01-10 06:25:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:08,293 INFO L470 AbstractCegarLoop]: Abstraction has 11848 states and 20509 transitions. [2022-01-10 06:25:08,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 20509 transitions. [2022-01-10 06:25:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 06:25:08,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:08,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:08,363 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 06:25:08,564 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 06:25:08,564 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2046259529, now seen corresponding path program 1 times [2022-01-10 06:25:08,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:08,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696114096] [2022-01-10 06:25:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:08,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:08,567 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 06:25:08,569 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 06:25:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:08,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:08,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:09,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:09,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696114096] [2022-01-10 06:25:09,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696114096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:09,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:09,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:09,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445163430] [2022-01-10 06:25:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:09,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:09,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:09,161 INFO L87 Difference]: Start difference. First operand 11848 states and 20509 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:25:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:09,834 INFO L93 Difference]: Finished difference Result 28294 states and 48916 transitions. [2022-01-10 06:25:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:09,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2022-01-10 06:25:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:09,907 INFO L225 Difference]: With dead ends: 28294 [2022-01-10 06:25:09,908 INFO L226 Difference]: Without dead ends: 18449 [2022-01-10 06:25:09,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 06:25:09,939 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 112 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1223 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 06:25:09,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1223 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18449 states. [2022-01-10 06:25:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18449 to 18441. [2022-01-10 06:25:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 15124 states have (on average 1.6344882306268183) internal successors, (24720), 15133 states have internal predecessors, (24720), 3284 states have call successors, (3284), 29 states have call predecessors, (3284), 32 states have return successors, (3621), 3280 states have call predecessors, (3621), 3281 states have call successors, (3621) [2022-01-10 06:25:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 31625 transitions. [2022-01-10 06:25:11,003 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 31625 transitions. Word has length 165 [2022-01-10 06:25:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:11,004 INFO L470 AbstractCegarLoop]: Abstraction has 18441 states and 31625 transitions. [2022-01-10 06:25:11,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:25:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 31625 transitions. [2022-01-10 06:25:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 06:25:11,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:11,063 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:11,083 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 06:25:11,277 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 06:25:11,278 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:11,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1234876616, now seen corresponding path program 1 times [2022-01-10 06:25:11,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:11,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874440048] [2022-01-10 06:25:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:11,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:11,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:11,280 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 06:25:11,282 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 06:25:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:11,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:11,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:11,825 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 06:25:11,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:11,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:11,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874440048] [2022-01-10 06:25:11,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874440048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:11,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:11,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:11,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625947757] [2022-01-10 06:25:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:11,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:11,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:11,827 INFO L87 Difference]: Start difference. First operand 18441 states and 31625 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:12,824 INFO L93 Difference]: Finished difference Result 48716 states and 83880 transitions. [2022-01-10 06:25:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:12,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-01-10 06:25:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:13,003 INFO L225 Difference]: With dead ends: 48716 [2022-01-10 06:25:13,003 INFO L226 Difference]: Without dead ends: 32885 [2022-01-10 06:25:13,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:13,067 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 110 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1245 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 06:25:13,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1245 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32885 states. [2022-01-10 06:25:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32885 to 32877. [2022-01-10 06:25:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32877 states, 27110 states have (on average 1.631390630763556) internal successors, (44227), 27119 states have internal predecessors, (44227), 5734 states have call successors, (5734), 29 states have call predecessors, (5734), 32 states have return successors, (6345), 5730 states have call predecessors, (6345), 5731 states have call successors, (6345) [2022-01-10 06:25:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32877 states to 32877 states and 56306 transitions. [2022-01-10 06:25:14,713 INFO L78 Accepts]: Start accepts. Automaton has 32877 states and 56306 transitions. Word has length 185 [2022-01-10 06:25:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:14,713 INFO L470 AbstractCegarLoop]: Abstraction has 32877 states and 56306 transitions. [2022-01-10 06:25:14,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 32877 states and 56306 transitions. [2022-01-10 06:25:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 06:25:15,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:15,148 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:15,187 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 06:25:15,348 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 06:25:15,349 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -808123674, now seen corresponding path program 1 times [2022-01-10 06:25:15,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:15,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114429792] [2022-01-10 06:25:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:15,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:15,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:15,352 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 06:25:15,379 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 06:25:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:15,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:15,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:16,028 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 06:25:16,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:16,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:16,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114429792] [2022-01-10 06:25:16,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114429792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:16,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:16,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:16,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721795223] [2022-01-10 06:25:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:16,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:16,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:16,030 INFO L87 Difference]: Start difference. First operand 32877 states and 56306 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:17,781 INFO L93 Difference]: Finished difference Result 89613 states and 153982 transitions. [2022-01-10 06:25:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:17,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2022-01-10 06:25:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:18,062 INFO L225 Difference]: With dead ends: 89613 [2022-01-10 06:25:18,063 INFO L226 Difference]: Without dead ends: 60222 [2022-01-10 06:25:18,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:18,162 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 108 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1254 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 06:25:18,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1254 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60222 states. [2022-01-10 06:25:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60222 to 60214. [2022-01-10 06:25:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60214 states, 49934 states have (on average 1.627147835142388) internal successors, (81250), 49943 states have internal predecessors, (81250), 10247 states have call successors, (10247), 29 states have call predecessors, (10247), 32 states have return successors, (11390), 10243 states have call predecessors, (11390), 10244 states have call successors, (11390) [2022-01-10 06:25:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60214 states to 60214 states and 102887 transitions. [2022-01-10 06:25:21,718 INFO L78 Accepts]: Start accepts. Automaton has 60214 states and 102887 transitions. Word has length 186 [2022-01-10 06:25:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:21,719 INFO L470 AbstractCegarLoop]: Abstraction has 60214 states and 102887 transitions. [2022-01-10 06:25:21,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 60214 states and 102887 transitions. [2022-01-10 06:25:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-10 06:25:21,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:21,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:21,852 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 06:25:22,049 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 06:25:22,050 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1975761560, now seen corresponding path program 1 times [2022-01-10 06:25:22,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:22,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471388078] [2022-01-10 06:25:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:22,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:22,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:22,052 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 06:25:22,052 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 06:25:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:22,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:22,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:22,538 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 06:25:22,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:22,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:22,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471388078] [2022-01-10 06:25:22,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471388078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:22,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:22,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:22,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605568777] [2022-01-10 06:25:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:22,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:22,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:22,540 INFO L87 Difference]: Start difference. First operand 60214 states and 102887 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:25,431 INFO L93 Difference]: Finished difference Result 112704 states and 192991 transitions. [2022-01-10 06:25:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:25,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 187 [2022-01-10 06:25:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:25,936 INFO L225 Difference]: With dead ends: 112704 [2022-01-10 06:25:25,937 INFO L226 Difference]: Without dead ends: 112480 [2022-01-10 06:25:26,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 185 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 06:25:26,002 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 106 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1245 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 06:25:26,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1245 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112480 states. [2022-01-10 06:25:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112480 to 112472. [2022-01-10 06:25:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112472 states, 93824 states have (on average 1.6217279160982265) internal successors, (152157), 93833 states have internal predecessors, (152157), 18615 states have call successors, (18615), 29 states have call predecessors, (18615), 32 states have return successors, (20804), 18611 states have call predecessors, (20804), 18612 states have call successors, (20804) [2022-01-10 06:25:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112472 states to 112472 states and 191576 transitions. [2022-01-10 06:25:30,894 INFO L78 Accepts]: Start accepts. Automaton has 112472 states and 191576 transitions. Word has length 187 [2022-01-10 06:25:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:30,894 INFO L470 AbstractCegarLoop]: Abstraction has 112472 states and 191576 transitions. [2022-01-10 06:25:30,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-01-10 06:25:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 112472 states and 191576 transitions. [2022-01-10 06:25:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 06:25:31,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:31,292 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:31,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:31,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:25:31,493 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1525935458, now seen corresponding path program 1 times [2022-01-10 06:25:31,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52753934] [2022-01-10 06:25:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:31,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:31,496 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:25:31,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:25:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:31,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:25:31,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 06:25:32,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:25:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:25:32,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:32,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52753934] [2022-01-10 06:25:32,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52753934] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:25:32,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:25:32,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:25:32,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119614814] [2022-01-10 06:25:32,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:25:32,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:25:32,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:32,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:25:32,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:25:32,543 INFO L87 Difference]: Start difference. First operand 112472 states and 191576 transitions. Second operand has 16 states, 16 states have (on average 12.125) internal successors, (194), 14 states have internal predecessors, (194), 4 states have call successors, (40), 6 states have call predecessors, (40), 9 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35)