/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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:25:01,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:25:01,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:25:01,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:25:01,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:25:01,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:25:01,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:25:01,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:25:01,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:25:01,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:25:01,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:25:01,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:25:01,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:25:01,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:25:01,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:25:01,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:25:01,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:25:01,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:25:01,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:25:01,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:25:01,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:25:02,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:25:02,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:25:02,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:25:02,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:25:02,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:25:02,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:25:02,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:25:02,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:25:02,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:25:02,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:25:02,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:25:02,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:25:02,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:25:02,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:25:02,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:25:02,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:25:02,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:25:02,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:25:02,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:25:02,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:25:02,022 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 06:25:02,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:25:02,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:25:02,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:25:02,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:25:02,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:25:02,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:25:02,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:25:02,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:25:02,036 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:25:02,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:25:02,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:25:02,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:25:02,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:25:02,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:25:02,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:25:02,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:25:02,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:25:02,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:25:02,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:25:02,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:25:02,257 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:25:02,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2022-01-10 06:25:02,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8e3fb54/7d48b53bd8e74c719243a761c23ff6bc/FLAG6d50a856a [2022-01-10 06:25:02,743 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:25:02,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2022-01-10 06:25:02,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8e3fb54/7d48b53bd8e74c719243a761c23ff6bc/FLAG6d50a856a [2022-01-10 06:25:02,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8e3fb54/7d48b53bd8e74c719243a761c23ff6bc [2022-01-10 06:25:02,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:25:02,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:25:02,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:25:02,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:25:02,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:25:02,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:25:02" (1/1) ... [2022-01-10 06:25:02,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f038af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:02, skipping insertion in model container [2022-01-10 06:25:02,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:25:02" (1/1) ... [2022-01-10 06:25:02,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:25:02,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:25:03,215 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_product33.cil.c[65706,65719] [2022-01-10 06:25:03,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:25:03,227 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:25:03,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:25:03,294 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_product33.cil.c[65706,65719] [2022-01-10 06:25:03,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:25:03,299 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:25:03,351 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_product33.cil.c[65706,65719] [2022-01-10 06:25:03,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:25:03,373 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:25:03,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03 WrapperNode [2022-01-10 06:25:03,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:25:03,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:25:03,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:25:03,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:25:03,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,429 INFO L137 Inliner]: procedures = 137, calls = 237, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1038 [2022-01-10 06:25:03,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:25:03,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:25:03,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:25:03,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:25:03,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:25:03,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:25:03,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:25:03,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:25:03,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (1/1) ... [2022-01-10 06:25:03,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:25:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:25:03,524 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 06:25:03,556 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 06:25:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:25:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:25:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:25:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:25:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:25:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:25:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:25:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:25:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:25:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:25:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:25:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:25:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:25:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:25:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:25:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:25:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:25:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:25:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:25:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:25:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:25:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:25:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:25:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:25:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:25:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:25:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:25:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:25:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:25:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:25:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:25:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:25:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:25:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:25:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:25:03,767 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:25:03,768 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:25:04,292 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:25:04,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:25:04,306 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:25:04,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:25:04 BoogieIcfgContainer [2022-01-10 06:25:04,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:25:04,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:25:04,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:25:04,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:25:04,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:25:02" (1/3) ... [2022-01-10 06:25:04,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789abdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:25:04, skipping insertion in model container [2022-01-10 06:25:04,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:25:03" (2/3) ... [2022-01-10 06:25:04,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789abdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:25:04, skipping insertion in model container [2022-01-10 06:25:04,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:25:04" (3/3) ... [2022-01-10 06:25:04,315 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.c [2022-01-10 06:25:04,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:25:04,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:25:04,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:25:04,368 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 06:25:04,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:25:04,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 304 states have (on average 1.4967105263157894) internal successors, (455), 310 states have internal predecessors, (455), 68 states have call successors, (68), 25 states have call predecessors, (68), 25 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-01-10 06:25:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:25:04,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:04,409 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] [2022-01-10 06:25:04,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash 934398129, now seen corresponding path program 1 times [2022-01-10 06:25:04,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:04,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560275871] [2022-01-10 06:25:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:04,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:04,457 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 06:25:04,460 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 06:25:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:04,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:25:04,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:05,016 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 06:25:05,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:05,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:05,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560275871] [2022-01-10 06:25:05,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560275871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:05,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:05,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:25:05,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088159043] [2022-01-10 06:25:05,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:05,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:25:05,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:25:05,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:25:05,050 INFO L87 Difference]: Start difference. First operand has 399 states, 304 states have (on average 1.4967105263157894) internal successors, (455), 310 states have internal predecessors, (455), 68 states have call successors, (68), 25 states have call predecessors, (68), 25 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:05,097 INFO L93 Difference]: Finished difference Result 638 states and 928 transitions. [2022-01-10 06:25:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:25:05,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-01-10 06:25:05,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:05,110 INFO L225 Difference]: With dead ends: 638 [2022-01-10 06:25:05,110 INFO L226 Difference]: Without dead ends: 391 [2022-01-10 06:25:05,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 129 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 06:25:05,117 INFO L933 BasicCegarLoop]: 585 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, 585 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 06:25:05,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-01-10 06:25:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2022-01-10 06:25:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 298 states have (on average 1.4899328859060403) internal successors, (444), 302 states have internal predecessors, (444), 68 states have call successors, (68), 25 states have call predecessors, (68), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-10 06:25:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 577 transitions. [2022-01-10 06:25:05,167 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 577 transitions. Word has length 130 [2022-01-10 06:25:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:05,168 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 577 transitions. [2022-01-10 06:25:05,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 577 transitions. [2022-01-10 06:25:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:25:05,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:05,174 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] [2022-01-10 06:25:05,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:05,384 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 06:25:05,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:05,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash -495222900, now seen corresponding path program 1 times [2022-01-10 06:25:05,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:05,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117068441] [2022-01-10 06:25:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:05,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:05,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:05,387 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 06:25:05,388 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 06:25:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:05,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:25:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:05,874 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 06:25:05,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:05,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:05,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117068441] [2022-01-10 06:25:05,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117068441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:05,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:05,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:05,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65585138] [2022-01-10 06:25:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:05,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:05,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:05,882 INFO L87 Difference]: Start difference. First operand 391 states and 577 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:05,954 INFO L93 Difference]: Finished difference Result 773 states and 1144 transitions. [2022-01-10 06:25:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:05,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 131 [2022-01-10 06:25:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:05,958 INFO L225 Difference]: With dead ends: 773 [2022-01-10 06:25:05,958 INFO L226 Difference]: Without dead ends: 393 [2022-01-10 06:25:05,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 06:25:05,961 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 133 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2120 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 06:25:05,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-10 06:25:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-01-10 06:25:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 299 states have (on average 1.4882943143812708) internal successors, (445), 304 states have internal predecessors, (445), 68 states have call successors, (68), 25 states have call predecessors, (68), 25 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2022-01-10 06:25:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 580 transitions. [2022-01-10 06:25:05,982 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 580 transitions. Word has length 131 [2022-01-10 06:25:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:05,982 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 580 transitions. [2022-01-10 06:25:05,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 580 transitions. [2022-01-10 06:25:05,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:25:05,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:05,986 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] [2022-01-10 06:25:05,998 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 06:25:06,196 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 06:25:06,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 733883438, now seen corresponding path program 1 times [2022-01-10 06:25:06,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206514148] [2022-01-10 06:25:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:06,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:06,200 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 06:25:06,201 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 06:25:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:06,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:25:06,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:06,610 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 06:25:06,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:06,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:06,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206514148] [2022-01-10 06:25:06,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206514148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:06,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:06,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:06,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411402614] [2022-01-10 06:25:06,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:06,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:06,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:06,612 INFO L87 Difference]: Start difference. First operand 393 states and 580 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:06,669 INFO L93 Difference]: Finished difference Result 775 states and 1148 transitions. [2022-01-10 06:25:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:06,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 132 [2022-01-10 06:25:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:06,686 INFO L225 Difference]: With dead ends: 775 [2022-01-10 06:25:06,686 INFO L226 Difference]: Without dead ends: 395 [2022-01-10 06:25:06,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 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 06:25:06,688 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 132 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:06,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2109 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-10 06:25:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-01-10 06:25:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 300 states have (on average 1.4866666666666666) internal successors, (446), 306 states have internal predecessors, (446), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (71), 65 states have call predecessors, (71), 65 states have call successors, (71) [2022-01-10 06:25:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 585 transitions. [2022-01-10 06:25:06,720 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 585 transitions. Word has length 132 [2022-01-10 06:25:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:06,721 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 585 transitions. [2022-01-10 06:25:06,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 585 transitions. [2022-01-10 06:25:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:25:06,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:06,724 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] [2022-01-10 06:25:06,740 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 06:25:06,924 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 06:25:06,925 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2089266486, now seen corresponding path program 1 times [2022-01-10 06:25:06,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:06,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537242718] [2022-01-10 06:25:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:06,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:06,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:06,929 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 06:25:06,940 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 06:25:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:07,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:25:07,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:25:07,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:07,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537242718] [2022-01-10 06:25:07,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537242718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:07,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:07,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:07,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563080722] [2022-01-10 06:25:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:07,366 INFO L87 Difference]: Start difference. First operand 395 states and 585 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:07,431 INFO L93 Difference]: Finished difference Result 767 states and 1138 transitions. [2022-01-10 06:25:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 133 [2022-01-10 06:25:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:07,437 INFO L225 Difference]: With dead ends: 767 [2022-01-10 06:25:07,437 INFO L226 Difference]: Without dead ends: 395 [2022-01-10 06:25:07,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 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 06:25:07,443 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 131 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2123 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 06:25:07,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2123 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-10 06:25:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-01-10 06:25:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 300 states have (on average 1.4866666666666666) internal successors, (446), 306 states have internal predecessors, (446), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (70), 65 states have call predecessors, (70), 65 states have call successors, (70) [2022-01-10 06:25:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 584 transitions. [2022-01-10 06:25:07,477 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 584 transitions. Word has length 133 [2022-01-10 06:25:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:07,477 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 584 transitions. [2022-01-10 06:25:07,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 584 transitions. [2022-01-10 06:25:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:25:07,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:07,485 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] [2022-01-10 06:25:07,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 06:25:07,695 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 06:25:07,695 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2092194102, now seen corresponding path program 2 times [2022-01-10 06:25:07,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143803244] [2022-01-10 06:25:07,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:25:07,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:07,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:07,712 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 06:25:07,732 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 06:25:07,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:25:07,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:25:07,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:07,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 06:25:08,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:08,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143803244] [2022-01-10 06:25:08,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143803244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:08,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:08,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:08,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133459034] [2022-01-10 06:25:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:08,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:08,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:08,054 INFO L87 Difference]: Start difference. First operand 395 states and 584 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:08,079 INFO L93 Difference]: Finished difference Result 631 states and 912 transitions. [2022-01-10 06:25:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:08,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2022-01-10 06:25:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:08,081 INFO L225 Difference]: With dead ends: 631 [2022-01-10 06:25:08,081 INFO L226 Difference]: Without dead ends: 398 [2022-01-10 06:25:08,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:08,082 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1148 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 06:25:08,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-10 06:25:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2022-01-10 06:25:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 302 states have (on average 1.4834437086092715) internal successors, (448), 308 states have internal predecessors, (448), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (70), 65 states have call predecessors, (70), 65 states have call successors, (70) [2022-01-10 06:25:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 586 transitions. [2022-01-10 06:25:08,093 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 586 transitions. Word has length 134 [2022-01-10 06:25:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:08,093 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 586 transitions. [2022-01-10 06:25:08,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 586 transitions. [2022-01-10 06:25:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:25:08,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:08,096 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:08,117 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 06:25:08,305 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 06:25:08,305 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1419545112, now seen corresponding path program 1 times [2022-01-10 06:25:08,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:08,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317940301] [2022-01-10 06:25:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:08,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:08,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:08,307 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 06:25:08,309 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 06:25:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:08,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:25:08,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:25:08,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:08,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:08,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317940301] [2022-01-10 06:25:08,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317940301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:08,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:08,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:08,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595089329] [2022-01-10 06:25:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:08,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:08,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:08,675 INFO L87 Difference]: Start difference. First operand 397 states and 586 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:08,717 INFO L93 Difference]: Finished difference Result 773 states and 1145 transitions. [2022-01-10 06:25:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:08,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2022-01-10 06:25:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:08,721 INFO L225 Difference]: With dead ends: 773 [2022-01-10 06:25:08,721 INFO L226 Difference]: Without dead ends: 399 [2022-01-10 06:25:08,722 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 06:25:08,723 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 129 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2125 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 06:25:08,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 2125 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-01-10 06:25:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2022-01-10 06:25:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 303 states have (on average 1.481848184818482) internal successors, (449), 310 states have internal predecessors, (449), 68 states have call successors, (68), 25 states have call predecessors, (68), 27 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2022-01-10 06:25:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 589 transitions. [2022-01-10 06:25:08,740 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 589 transitions. Word has length 143 [2022-01-10 06:25:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:08,740 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 589 transitions. [2022-01-10 06:25:08,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 589 transitions. [2022-01-10 06:25:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 06:25:08,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:08,742 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] [2022-01-10 06:25:08,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 06:25:08,952 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 06:25:08,953 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash 605520067, now seen corresponding path program 1 times [2022-01-10 06:25:08,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:08,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978373444] [2022-01-10 06:25:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:08,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:08,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:08,955 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 06:25:08,956 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 06:25:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:09,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:25:09,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:25:09,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:09,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978373444] [2022-01-10 06:25:09,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978373444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:09,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:09,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:09,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747103375] [2022-01-10 06:25:09,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:09,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:09,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:09,345 INFO L87 Difference]: Start difference. First operand 399 states and 589 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:09,392 INFO L93 Difference]: Finished difference Result 771 states and 1140 transitions. [2022-01-10 06:25:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:09,393 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 144 [2022-01-10 06:25:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:09,394 INFO L225 Difference]: With dead ends: 771 [2022-01-10 06:25:09,394 INFO L226 Difference]: Without dead ends: 399 [2022-01-10 06:25:09,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 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 06:25:09,396 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 130 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2112 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 06:25:09,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 2112 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-01-10 06:25:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2022-01-10 06:25:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 303 states have (on average 1.481848184818482) internal successors, (449), 310 states have internal predecessors, (449), 68 states have call successors, (68), 25 states have call predecessors, (68), 27 states have return successors, (71), 65 states have call predecessors, (71), 65 states have call successors, (71) [2022-01-10 06:25:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 588 transitions. [2022-01-10 06:25:09,406 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 588 transitions. Word has length 144 [2022-01-10 06:25:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:09,406 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 588 transitions. [2022-01-10 06:25:09,406 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 588 transitions. [2022-01-10 06:25:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 06:25:09,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:09,408 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, 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 06:25:09,420 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 06:25:09,618 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 06:25:09,621 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1134143501, now seen corresponding path program 2 times [2022-01-10 06:25:09,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450542475] [2022-01-10 06:25:09,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:25:09,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:09,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:09,640 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 06:25:09,689 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 06:25:09,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:25:09,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:25:09,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:25:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:25:10,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:25:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:25:10,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:10,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450542475] [2022-01-10 06:25:10,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450542475] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:25:10,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:25:10,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:25:10,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374359767] [2022-01-10 06:25:10,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:25:10,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:25:10,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:25:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:25:10,840 INFO L87 Difference]: Start difference. First operand 399 states and 588 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (37), 6 states have call predecessors, (37), 9 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) [2022-01-10 06:25:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:14,688 INFO L93 Difference]: Finished difference Result 1393 states and 2065 transitions. [2022-01-10 06:25:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:25:14,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (37), 6 states have call predecessors, (37), 9 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) Word has length 145 [2022-01-10 06:25:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:14,695 INFO L225 Difference]: With dead ends: 1393 [2022-01-10 06:25:14,695 INFO L226 Difference]: Without dead ends: 1166 [2022-01-10 06:25:14,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2022-01-10 06:25:14,697 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1709 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 5755 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 6359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 5755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:14,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 3279 Invalid, 6359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 5755 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 06:25:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-10 06:25:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 793. [2022-01-10 06:25:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 605 states have (on average 1.4859504132231405) internal successors, (899), 615 states have internal predecessors, (899), 132 states have call successors, (132), 50 states have call predecessors, (132), 55 states have return successors, (143), 131 states have call predecessors, (143), 128 states have call successors, (143) [2022-01-10 06:25:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1174 transitions. [2022-01-10 06:25:14,736 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1174 transitions. Word has length 145 [2022-01-10 06:25:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:14,737 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 1174 transitions. [2022-01-10 06:25:14,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (37), 6 states have call predecessors, (37), 9 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) [2022-01-10 06:25:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1174 transitions. [2022-01-10 06:25:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 06:25:14,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:14,740 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] [2022-01-10 06:25:14,754 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 06:25:14,951 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 06:25:14,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash -953642653, now seen corresponding path program 1 times [2022-01-10 06:25:14,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:14,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359325291] [2022-01-10 06:25:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:14,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:14,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:14,957 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 06:25:14,958 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 06:25:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:15,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:25:15,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:25:15,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:15,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:15,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359325291] [2022-01-10 06:25:15,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359325291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:15,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:15,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:15,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7162231] [2022-01-10 06:25:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:15,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:15,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:15,368 INFO L87 Difference]: Start difference. First operand 793 states and 1174 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:15,432 INFO L93 Difference]: Finished difference Result 1549 states and 2302 transitions. [2022-01-10 06:25:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:15,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 146 [2022-01-10 06:25:15,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:15,436 INFO L225 Difference]: With dead ends: 1549 [2022-01-10 06:25:15,436 INFO L226 Difference]: Without dead ends: 799 [2022-01-10 06:25:15,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 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 06:25:15,438 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 128 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:15,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 2114 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-01-10 06:25:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-01-10 06:25:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 607 states have (on average 1.4843492586490938) internal successors, (901), 619 states have internal predecessors, (901), 132 states have call successors, (132), 50 states have call predecessors, (132), 57 states have return successors, (148), 131 states have call predecessors, (148), 128 states have call successors, (148) [2022-01-10 06:25:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1181 transitions. [2022-01-10 06:25:15,460 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1181 transitions. Word has length 146 [2022-01-10 06:25:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:15,461 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1181 transitions. [2022-01-10 06:25:15,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1181 transitions. [2022-01-10 06:25:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 06:25:15,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:15,463 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] [2022-01-10 06:25:15,475 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 06:25:15,673 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 06:25:15,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1592485722, now seen corresponding path program 1 times [2022-01-10 06:25:15,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:15,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454072260] [2022-01-10 06:25:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:15,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:15,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:15,676 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 06:25:15,716 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 06:25:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:15,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:25:15,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:25:16,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:16,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:16,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454072260] [2022-01-10 06:25:16,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454072260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:16,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:16,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:25:16,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092475117] [2022-01-10 06:25:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:16,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:25:16,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:25:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:16,153 INFO L87 Difference]: Start difference. First operand 797 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:16,232 INFO L93 Difference]: Finished difference Result 1557 states and 2314 transitions. [2022-01-10 06:25:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:25:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 147 [2022-01-10 06:25:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:16,235 INFO L225 Difference]: With dead ends: 1557 [2022-01-10 06:25:16,235 INFO L226 Difference]: Without dead ends: 803 [2022-01-10 06:25:16,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 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 06:25:16,238 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 128 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:16,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 2112 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:25:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-01-10 06:25:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 797. [2022-01-10 06:25:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 607 states have (on average 1.4843492586490938) internal successors, (901), 619 states have internal predecessors, (901), 132 states have call successors, (132), 50 states have call predecessors, (132), 57 states have return successors, (148), 131 states have call predecessors, (148), 128 states have call successors, (148) [2022-01-10 06:25:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1181 transitions. [2022-01-10 06:25:16,260 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1181 transitions. Word has length 147 [2022-01-10 06:25:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:16,260 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1181 transitions. [2022-01-10 06:25:16,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1181 transitions. [2022-01-10 06:25:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 06:25:16,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:16,262 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] [2022-01-10 06:25:16,285 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 06:25:16,473 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 06:25:16,473 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash -669087528, now seen corresponding path program 1 times [2022-01-10 06:25:16,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:16,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779282540] [2022-01-10 06:25:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:16,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:16,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:16,475 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 06:25:16,476 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 06:25:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:16,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:16,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:16,865 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 06:25:16,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:16,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:16,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779282540] [2022-01-10 06:25:16,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779282540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:16,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:16,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:16,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620438366] [2022-01-10 06:25:16,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:16,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:16,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:16,882 INFO L87 Difference]: Start difference. First operand 797 states and 1181 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:16,913 INFO L93 Difference]: Finished difference Result 1667 states and 2506 transitions. [2022-01-10 06:25:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:16,913 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-01-10 06:25:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:16,918 INFO L225 Difference]: With dead ends: 1667 [2022-01-10 06:25:16,918 INFO L226 Difference]: Without dead ends: 921 [2022-01-10 06:25:16,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 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 06:25:16,921 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 115 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1127 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 06:25:16,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1127 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-01-10 06:25:16,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 905. [2022-01-10 06:25:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 693 states have (on average 1.5021645021645023) internal successors, (1041), 705 states have internal predecessors, (1041), 154 states have call successors, (154), 50 states have call predecessors, (154), 57 states have return successors, (178), 153 states have call predecessors, (178), 150 states have call successors, (178) [2022-01-10 06:25:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1373 transitions. [2022-01-10 06:25:16,951 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1373 transitions. Word has length 147 [2022-01-10 06:25:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:16,951 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1373 transitions. [2022-01-10 06:25:16,951 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1373 transitions. [2022-01-10 06:25:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 06:25:16,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:16,954 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] [2022-01-10 06:25:16,966 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 06:25:17,164 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 06:25:17,164 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 559333743, now seen corresponding path program 1 times [2022-01-10 06:25:17,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:17,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851746236] [2022-01-10 06:25:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:17,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:17,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:17,166 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 06:25:17,168 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 06:25:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:17,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:25:17,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:25:17,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:17,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851746236] [2022-01-10 06:25:17,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851746236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:17,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:17,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:25:17,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402790512] [2022-01-10 06:25:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:17,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:25:17,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:25:17,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:25:17,578 INFO L87 Difference]: Start difference. First operand 905 states and 1373 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:17,664 INFO L93 Difference]: Finished difference Result 2039 states and 3159 transitions. [2022-01-10 06:25:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:25:17,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2022-01-10 06:25:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:17,672 INFO L225 Difference]: With dead ends: 2039 [2022-01-10 06:25:17,672 INFO L226 Difference]: Without dead ends: 1183 [2022-01-10 06:25:17,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:25:17,675 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 665 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:17,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1325 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-10 06:25:17,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 913. [2022-01-10 06:25:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 699 states have (on average 1.4878397711015736) internal successors, (1040), 711 states have internal predecessors, (1040), 154 states have call successors, (154), 52 states have call predecessors, (154), 59 states have return successors, (176), 153 states have call predecessors, (176), 150 states have call successors, (176) [2022-01-10 06:25:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1370 transitions. [2022-01-10 06:25:17,711 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1370 transitions. Word has length 148 [2022-01-10 06:25:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:17,711 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1370 transitions. [2022-01-10 06:25:17,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:25:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1370 transitions. [2022-01-10 06:25:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 06:25:17,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:17,714 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] [2022-01-10 06:25:17,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 06:25:17,923 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 06:25:17,924 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1750225489, now seen corresponding path program 1 times [2022-01-10 06:25:17,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:17,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583409775] [2022-01-10 06:25:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:17,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:17,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:17,926 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 06:25:17,927 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 06:25:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:18,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:25:18,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:18,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:25:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:25:18,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583409775] [2022-01-10 06:25:18,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583409775] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:25:18,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:25:18,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:25:18,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387077508] [2022-01-10 06:25:18,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:25:18,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:25:18,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:25:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:25:18,373 INFO L87 Difference]: Start difference. First operand 913 states and 1370 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:25:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:18,554 INFO L93 Difference]: Finished difference Result 2123 states and 3298 transitions. [2022-01-10 06:25:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:25:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 149 [2022-01-10 06:25:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:18,595 INFO L225 Difference]: With dead ends: 2123 [2022-01-10 06:25:18,595 INFO L226 Difference]: Without dead ends: 1657 [2022-01-10 06:25:18,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 292 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 06:25:18,599 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 481 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:25:18,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 2019 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:25:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-01-10 06:25:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1609. [2022-01-10 06:25:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1267 states have (on average 1.5438042620363062) internal successors, (1956), 1279 states have internal predecessors, (1956), 282 states have call successors, (282), 52 states have call predecessors, (282), 59 states have return successors, (344), 281 states have call predecessors, (344), 278 states have call successors, (344) [2022-01-10 06:25:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2582 transitions. [2022-01-10 06:25:18,662 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2582 transitions. Word has length 149 [2022-01-10 06:25:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:18,662 INFO L470 AbstractCegarLoop]: Abstraction has 1609 states and 2582 transitions. [2022-01-10 06:25:18,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:25:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2582 transitions. [2022-01-10 06:25:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 06:25:18,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:18,667 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:18,679 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 06:25:18,877 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 06:25:18,877 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1792937873, now seen corresponding path program 1 times [2022-01-10 06:25:18,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:18,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122207544] [2022-01-10 06:25:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:18,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:18,879 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 06:25:18,881 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 06:25:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:19,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:19,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:19,260 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 06:25:19,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:19,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:19,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122207544] [2022-01-10 06:25:19,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122207544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:19,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:19,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:19,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910913094] [2022-01-10 06:25:19,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:19,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:19,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:19,263 INFO L87 Difference]: Start difference. First operand 1609 states and 2582 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:19,430 INFO L93 Difference]: Finished difference Result 3731 states and 6117 transitions. [2022-01-10 06:25:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:19,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-01-10 06:25:19,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:19,461 INFO L225 Difference]: With dead ends: 3731 [2022-01-10 06:25:19,461 INFO L226 Difference]: Without dead ends: 2275 [2022-01-10 06:25:19,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 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 06:25:19,482 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 109 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1163 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 06:25:19,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2022-01-10 06:25:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2259. [2022-01-10 06:25:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 1789 states have (on average 1.568474007825601) internal successors, (2806), 1801 states have internal predecessors, (2806), 410 states have call successors, (410), 52 states have call predecessors, (410), 59 states have return successors, (512), 409 states have call predecessors, (512), 406 states have call successors, (512) [2022-01-10 06:25:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3728 transitions. [2022-01-10 06:25:19,571 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3728 transitions. Word has length 151 [2022-01-10 06:25:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:19,572 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 3728 transitions. [2022-01-10 06:25:19,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3728 transitions. [2022-01-10 06:25:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:25:19,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:19,581 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:19,605 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 06:25:19,790 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 06:25:19,790 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1845058219, now seen corresponding path program 1 times [2022-01-10 06:25:19,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400196350] [2022-01-10 06:25:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:19,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:19,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:19,793 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 06:25:19,794 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 06:25:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:20,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:20,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:20,197 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 06:25:20,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:20,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:20,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400196350] [2022-01-10 06:25:20,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400196350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:20,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:20,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:20,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364045068] [2022-01-10 06:25:20,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:20,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:20,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:20,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:20,200 INFO L87 Difference]: Start difference. First operand 2259 states and 3728 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:20,327 INFO L93 Difference]: Finished difference Result 5331 states and 8875 transitions. [2022-01-10 06:25:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-01-10 06:25:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:20,341 INFO L225 Difference]: With dead ends: 5331 [2022-01-10 06:25:20,341 INFO L226 Difference]: Without dead ends: 3331 [2022-01-10 06:25:20,347 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 06:25:20,348 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 107 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1153 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 06:25:20,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1153 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2022-01-10 06:25:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3315. [2022-01-10 06:25:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2655 states have (on average 1.577401129943503) internal successors, (4188), 2667 states have internal predecessors, (4188), 600 states have call successors, (600), 52 states have call predecessors, (600), 59 states have return successors, (734), 599 states have call predecessors, (734), 596 states have call successors, (734) [2022-01-10 06:25:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 5522 transitions. [2022-01-10 06:25:20,637 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 5522 transitions. Word has length 152 [2022-01-10 06:25:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:20,637 INFO L470 AbstractCegarLoop]: Abstraction has 3315 states and 5522 transitions. [2022-01-10 06:25:20,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 5522 transitions. [2022-01-10 06:25:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 06:25:20,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:20,651 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:20,661 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 06:25:20,861 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 06:25:20,861 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1139858079, now seen corresponding path program 1 times [2022-01-10 06:25:20,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:20,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736486897] [2022-01-10 06:25:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:20,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:20,864 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 06:25:20,866 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 06:25:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:21,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:21,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:21,230 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 06:25:21,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:21,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:21,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736486897] [2022-01-10 06:25:21,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736486897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:21,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:21,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:21,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041886561] [2022-01-10 06:25:21,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:21,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:21,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:21,232 INFO L87 Difference]: Start difference. First operand 3315 states and 5522 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:21,426 INFO L93 Difference]: Finished difference Result 7723 states and 12997 transitions. [2022-01-10 06:25:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-01-10 06:25:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:21,445 INFO L225 Difference]: With dead ends: 7723 [2022-01-10 06:25:21,445 INFO L226 Difference]: Without dead ends: 4933 [2022-01-10 06:25:21,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 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 06:25:21,451 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 105 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1147 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 06:25:21,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1147 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2022-01-10 06:25:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 4917. [2022-01-10 06:25:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4917 states, 4011 states have (on average 1.5841436050860134) internal successors, (6354), 4023 states have internal predecessors, (6354), 846 states have call successors, (846), 52 states have call predecessors, (846), 59 states have return successors, (1064), 845 states have call predecessors, (1064), 842 states have call successors, (1064) [2022-01-10 06:25:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 8264 transitions. [2022-01-10 06:25:21,707 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 8264 transitions. Word has length 153 [2022-01-10 06:25:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:21,708 INFO L470 AbstractCegarLoop]: Abstraction has 4917 states and 8264 transitions. [2022-01-10 06:25:21,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 8264 transitions. [2022-01-10 06:25:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 06:25:21,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:21,724 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:21,751 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 06:25:21,934 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 06:25:21,935 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -461223028, now seen corresponding path program 1 times [2022-01-10 06:25:21,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:21,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095193616] [2022-01-10 06:25:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:21,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:21,937 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 06:25:21,937 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 06:25:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:22,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:22,366 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 06:25:22,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:22,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:22,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095193616] [2022-01-10 06:25:22,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095193616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:22,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:22,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:22,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715985108] [2022-01-10 06:25:22,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:22,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:22,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:22,368 INFO L87 Difference]: Start difference. First operand 4917 states and 8264 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:22,635 INFO L93 Difference]: Finished difference Result 11455 states and 19435 transitions. [2022-01-10 06:25:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:22,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-01-10 06:25:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:22,679 INFO L225 Difference]: With dead ends: 11455 [2022-01-10 06:25:22,680 INFO L226 Difference]: Without dead ends: 7495 [2022-01-10 06:25:22,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 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 06:25:22,705 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 103 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1147 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 06:25:22,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1147 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2022-01-10 06:25:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 7479. [2022-01-10 06:25:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 6215 states have (on average 1.5884151246983105) internal successors, (9872), 6227 states have internal predecessors, (9872), 1204 states have call successors, (1204), 52 states have call predecessors, (1204), 59 states have return successors, (1562), 1203 states have call predecessors, (1562), 1200 states have call successors, (1562) [2022-01-10 06:25:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 12638 transitions. [2022-01-10 06:25:23,117 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 12638 transitions. Word has length 154 [2022-01-10 06:25:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:23,117 INFO L470 AbstractCegarLoop]: Abstraction has 7479 states and 12638 transitions. [2022-01-10 06:25:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 12638 transitions. [2022-01-10 06:25:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 06:25:23,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:23,145 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:23,169 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 06:25:23,356 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 06:25:23,356 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1206062427, now seen corresponding path program 1 times [2022-01-10 06:25:23,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256405219] [2022-01-10 06:25:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:23,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:23,358 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 06:25:23,361 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 06:25:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:23,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:23,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:23,730 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 06:25:23,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:23,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256405219] [2022-01-10 06:25:23,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256405219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:23,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:23,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:23,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588969302] [2022-01-10 06:25:23,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:23,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:23,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:23,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:23,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:23,734 INFO L87 Difference]: Start difference. First operand 7479 states and 12638 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:24,256 INFO L93 Difference]: Finished difference Result 17599 states and 30021 transitions. [2022-01-10 06:25:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:24,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-01-10 06:25:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:24,288 INFO L225 Difference]: With dead ends: 17599 [2022-01-10 06:25:24,289 INFO L226 Difference]: Without dead ends: 11733 [2022-01-10 06:25:24,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 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 06:25:24,303 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 101 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1157 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 06:25:24,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1157 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2022-01-10 06:25:24,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 11717. [2022-01-10 06:25:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11717 states, 9701 states have (on average 1.5825172662612101) internal successors, (15352), 9713 states have internal predecessors, (15352), 1956 states have call successors, (1956), 52 states have call predecessors, (1956), 59 states have return successors, (2558), 1955 states have call predecessors, (2558), 1952 states have call successors, (2558) [2022-01-10 06:25:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11717 states to 11717 states and 19866 transitions. [2022-01-10 06:25:25,042 INFO L78 Accepts]: Start accepts. Automaton has 11717 states and 19866 transitions. Word has length 155 [2022-01-10 06:25:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:25,043 INFO L470 AbstractCegarLoop]: Abstraction has 11717 states and 19866 transitions. [2022-01-10 06:25:25,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 11717 states and 19866 transitions. [2022-01-10 06:25:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 06:25:25,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:25,080 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:25,103 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 06:25:25,292 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 06:25:25,293 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2119082800, now seen corresponding path program 1 times [2022-01-10 06:25:25,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:25,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688061146] [2022-01-10 06:25:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:25,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:25,296 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 06:25:25,336 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 06:25:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:25,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:25,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:25,683 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 06:25:25,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:25,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:25,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688061146] [2022-01-10 06:25:25,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688061146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:25,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:25,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:25,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062719693] [2022-01-10 06:25:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:25,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:25,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:25,685 INFO L87 Difference]: Start difference. First operand 11717 states and 19866 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:26,614 INFO L93 Difference]: Finished difference Result 28721 states and 48945 transitions. [2022-01-10 06:25:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:26,615 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2022-01-10 06:25:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:26,664 INFO L225 Difference]: With dead ends: 28721 [2022-01-10 06:25:26,664 INFO L226 Difference]: Without dead ends: 19411 [2022-01-10 06:25:26,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 06:25:26,684 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 99 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1162 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 06:25:26,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1162 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19411 states. [2022-01-10 06:25:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19411 to 19395. [2022-01-10 06:25:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19395 states, 16167 states have (on average 1.5807509123523227) internal successors, (25556), 16179 states have internal predecessors, (25556), 3168 states have call successors, (3168), 52 states have call predecessors, (3168), 59 states have return successors, (4070), 3167 states have call predecessors, (4070), 3164 states have call successors, (4070) [2022-01-10 06:25:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19395 states to 19395 states and 32794 transitions. [2022-01-10 06:25:27,710 INFO L78 Accepts]: Start accepts. Automaton has 19395 states and 32794 transitions. Word has length 156 [2022-01-10 06:25:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:27,711 INFO L470 AbstractCegarLoop]: Abstraction has 19395 states and 32794 transitions. [2022-01-10 06:25:27,711 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 19395 states and 32794 transitions. [2022-01-10 06:25:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 06:25:27,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:27,760 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:27,769 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 06:25:27,970 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 06:25:27,970 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2064745783, now seen corresponding path program 1 times [2022-01-10 06:25:27,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:27,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645933109] [2022-01-10 06:25:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:27,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:27,972 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 06:25:27,974 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 06:25:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:28,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:28,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:28,493 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 06:25:28,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:28,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645933109] [2022-01-10 06:25:28,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645933109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:28,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:28,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:28,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264308000] [2022-01-10 06:25:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:28,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:28,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:28,494 INFO L87 Difference]: Start difference. First operand 19395 states and 32794 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:30,191 INFO L93 Difference]: Finished difference Result 49929 states and 84877 transitions. [2022-01-10 06:25:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:30,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2022-01-10 06:25:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:30,332 INFO L225 Difference]: With dead ends: 49929 [2022-01-10 06:25:30,332 INFO L226 Difference]: Without dead ends: 33893 [2022-01-10 06:25:30,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 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 06:25:30,397 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 97 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1169 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 06:25:30,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1169 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33893 states. [2022-01-10 06:25:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33893 to 33877. [2022-01-10 06:25:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33877 states, 28243 states have (on average 1.5726374676911092) internal successors, (44416), 28255 states have internal predecessors, (44416), 5574 states have call successors, (5574), 52 states have call predecessors, (5574), 59 states have return successors, (7182), 5573 states have call predecessors, (7182), 5570 states have call successors, (7182) [2022-01-10 06:25:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33877 states to 33877 states and 57172 transitions. [2022-01-10 06:25:32,229 INFO L78 Accepts]: Start accepts. Automaton has 33877 states and 57172 transitions. Word has length 157 [2022-01-10 06:25:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:32,229 INFO L470 AbstractCegarLoop]: Abstraction has 33877 states and 57172 transitions. [2022-01-10 06:25:32,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 33877 states and 57172 transitions. [2022-01-10 06:25:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 06:25:32,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:32,520 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:32,545 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 06:25:32,731 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 06:25:32,731 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1866491601, now seen corresponding path program 1 times [2022-01-10 06:25:32,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:32,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524272590] [2022-01-10 06:25:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:32,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:32,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:32,748 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 06:25:32,748 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 06:25:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:32,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:33,158 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 06:25:33,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:33,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:33,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524272590] [2022-01-10 06:25:33,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524272590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:33,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:33,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:33,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068914973] [2022-01-10 06:25:33,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:33,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:33,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:33,160 INFO L87 Difference]: Start difference. First operand 33877 states and 57172 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:35,769 INFO L93 Difference]: Finished difference Result 89477 states and 151821 transitions. [2022-01-10 06:25:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-01-10 06:25:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:35,978 INFO L225 Difference]: With dead ends: 89477 [2022-01-10 06:25:35,979 INFO L226 Difference]: Without dead ends: 60299 [2022-01-10 06:25:36,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 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 06:25:36,034 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 95 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1152 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 06:25:36,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1152 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60299 states. [2022-01-10 06:25:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60299 to 60283. [2022-01-10 06:25:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60283 states, 50571 states have (on average 1.5684878685412589) internal successors, (79320), 50583 states have internal predecessors, (79320), 9652 states have call successors, (9652), 52 states have call predecessors, (9652), 59 states have return successors, (12614), 9651 states have call predecessors, (12614), 9648 states have call successors, (12614) [2022-01-10 06:25:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60283 states to 60283 states and 101586 transitions. [2022-01-10 06:25:39,472 INFO L78 Accepts]: Start accepts. Automaton has 60283 states and 101586 transitions. Word has length 158 [2022-01-10 06:25:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:39,474 INFO L470 AbstractCegarLoop]: Abstraction has 60283 states and 101586 transitions. [2022-01-10 06:25:39,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 60283 states and 101586 transitions. [2022-01-10 06:25:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 06:25:39,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:39,570 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:25:39,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:25:39,780 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1950899541, now seen corresponding path program 1 times [2022-01-10 06:25:39,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:39,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708431348] [2022-01-10 06:25:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:39,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:39,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:39,782 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:25:39,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:25:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:39,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:40,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:40,219 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 06:25:40,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:40,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:40,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708431348] [2022-01-10 06:25:40,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708431348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:40,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:40,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:40,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104076096] [2022-01-10 06:25:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:40,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:40,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:40,220 INFO L87 Difference]: Start difference. First operand 60283 states and 101586 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:25:45,052 INFO L93 Difference]: Finished difference Result 164161 states and 276665 transitions. [2022-01-10 06:25:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:25:45,054 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-01-10 06:25:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:25:45,562 INFO L225 Difference]: With dead ends: 164161 [2022-01-10 06:25:45,563 INFO L226 Difference]: Without dead ends: 110185 [2022-01-10 06:25:45,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 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 06:25:45,671 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 93 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1153 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 06:25:45,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1153 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:25:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110185 states. [2022-01-10 06:25:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110185 to 110169. [2022-01-10 06:25:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110169 states, 93027 states have (on average 1.562836595827018) internal successors, (145386), 93039 states have internal predecessors, (145386), 17082 states have call successors, (17082), 52 states have call predecessors, (17082), 59 states have return successors, (21640), 17081 states have call predecessors, (21640), 17078 states have call successors, (21640) [2022-01-10 06:25:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110169 states to 110169 states and 184108 transitions. [2022-01-10 06:25:52,598 INFO L78 Accepts]: Start accepts. Automaton has 110169 states and 184108 transitions. Word has length 159 [2022-01-10 06:25:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:25:52,599 INFO L470 AbstractCegarLoop]: Abstraction has 110169 states and 184108 transitions. [2022-01-10 06:25:52,599 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:25:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 110169 states and 184108 transitions. [2022-01-10 06:25:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 06:25:52,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:25:52,747 INFO L514 BasicCegarLoop]: trace histogram [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, 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 06:25:52,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:25:52,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:25:52,958 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:25:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:25:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2008029071, now seen corresponding path program 1 times [2022-01-10 06:25:52,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:25:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271183549] [2022-01-10 06:25:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:25:52,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:25:52,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:25:52,961 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:25:52,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:25:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:25:53,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:25:53,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:25:53,374 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 06:25:53,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:25:53,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:25:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271183549] [2022-01-10 06:25:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271183549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:25:53,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:25:53,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:25:53,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201280590] [2022-01-10 06:25:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:25:53,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:25:53,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:25:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:25:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:25:53,375 INFO L87 Difference]: Start difference. First operand 110169 states and 184108 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:26:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:26:01,469 INFO L93 Difference]: Finished difference Result 205753 states and 344464 transitions. [2022-01-10 06:26:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:26:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-01-10 06:26:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:26:02,595 INFO L225 Difference]: With dead ends: 205753 [2022-01-10 06:26:02,596 INFO L226 Difference]: Without dead ends: 205287 [2022-01-10 06:26:02,679 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 06:26:02,679 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 91 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1152 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 06:26:02,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1152 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:26:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205287 states.