/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_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:23:56,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:23:56,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:23:56,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:23:56,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:23:56,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:23:56,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:23:56,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:23:56,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:23:56,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:23:56,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:23:56,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:23:56,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:23:56,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:23:56,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:23:56,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:23:56,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:23:56,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:23:56,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:23:56,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:23:56,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:23:56,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:23:56,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:23:56,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:23:56,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:23:56,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:23:56,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:23:56,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:23:56,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:23:56,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:23:56,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:23:56,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:23:56,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:23:56,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:23:56,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:23:56,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:23:56,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:23:56,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:23:56,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:23:56,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:23:56,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:23:56,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:23:56,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:23:56,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:23:56,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:23:56,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:23:56,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:23:56,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:23:56,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:23:56,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:23:56,715 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:23:56,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:23:56,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:23:56,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:23:56,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:23:56,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:23:56,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:23:56,718 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:23:56,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:23:56,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:23:56,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:23:56,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:23:56,919 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:23:56,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c [2022-01-10 06:23:56,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d84b028/e5758b9e5ca2403db37a16b283bbfbdb/FLAG5bbb76d11 [2022-01-10 06:23:57,380 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:23:57,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c [2022-01-10 06:23:57,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d84b028/e5758b9e5ca2403db37a16b283bbfbdb/FLAG5bbb76d11 [2022-01-10 06:23:57,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d84b028/e5758b9e5ca2403db37a16b283bbfbdb [2022-01-10 06:23:57,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:23:57,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:23:57,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:23:57,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:23:57,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:23:57,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:23:57" (1/1) ... [2022-01-10 06:23:57,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e90e5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:57, skipping insertion in model container [2022-01-10 06:23:57,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:23:57" (1/1) ... [2022-01-10 06:23:57,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:23:57,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:23:58,197 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_product13.cil.c[62004,62017] [2022-01-10 06:23:58,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:23:58,224 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:23:58,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:23:58,284 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_product13.cil.c[62004,62017] [2022-01-10 06:23:58,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:23:58,289 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:23:58,357 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_product13.cil.c[62004,62017] [2022-01-10 06:23:58,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:23:58,394 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:23:58,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58 WrapperNode [2022-01-10 06:23:58,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:23:58,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:23:58,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:23:58,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:23:58,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,477 INFO L137 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 52, calls inlined = 43, statements flattened = 781 [2022-01-10 06:23:58,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:23:58,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:23:58,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:23:58,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:23:58,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:23:58,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:23:58,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:23:58,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:23:58,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (1/1) ... [2022-01-10 06:23:58,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:23:58,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:23:58,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:23:58,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:23:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:23:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:23:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:23:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:23:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:23:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:23:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:23:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:23:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:23:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:23:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:23:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:23:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:23:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:23:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:23:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:23:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:23:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:23:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:23:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:23:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:23:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:23:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:23:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:23:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:23:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:23:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:23:58,754 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:23:58,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:23:59,348 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:23:59,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:23:59,359 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:23:59,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:23:59 BoogieIcfgContainer [2022-01-10 06:23:59,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:23:59,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:23:59,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:23:59,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:23:59,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:23:57" (1/3) ... [2022-01-10 06:23:59,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9177aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:23:59, skipping insertion in model container [2022-01-10 06:23:59,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:23:58" (2/3) ... [2022-01-10 06:23:59,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9177aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:23:59, skipping insertion in model container [2022-01-10 06:23:59,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:23:59" (3/3) ... [2022-01-10 06:23:59,368 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product13.cil.c [2022-01-10 06:23:59,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:23:59,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:23:59,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:23:59,416 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:23:59,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:23:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 223 states have (on average 1.5381165919282511) internal successors, (343), 227 states have internal predecessors, (343), 43 states have call successors, (43), 18 states have call predecessors, (43), 18 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-10 06:23:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 06:23:59,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:59,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:23:59,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:23:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:23:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1913715365, now seen corresponding path program 1 times [2022-01-10 06:23:59,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:23:59,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528648362] [2022-01-10 06:23:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:23:59,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:23:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:23:59,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:23:59,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:23:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:23:59,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:23:59,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:23:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:23:59,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:23:59,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:23:59,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528648362] [2022-01-10 06:23:59,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528648362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:23:59,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:23:59,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:23:59,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137905254] [2022-01-10 06:23:59,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:23:59,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:23:59,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:23:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:23:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:23:59,898 INFO L87 Difference]: Start difference. First operand has 286 states, 223 states have (on average 1.5381165919282511) internal successors, (343), 227 states have internal predecessors, (343), 43 states have call successors, (43), 18 states have call predecessors, (43), 18 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:23:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:23:59,929 INFO L93 Difference]: Finished difference Result 422 states and 620 transitions. [2022-01-10 06:23:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:23:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-01-10 06:23:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:23:59,939 INFO L225 Difference]: With dead ends: 422 [2022-01-10 06:23:59,939 INFO L226 Difference]: Without dead ends: 278 [2022-01-10 06:23:59,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:23:59,945 INFO L933 BasicCegarLoop]: 423 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, 423 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:23:59,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:23:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-10 06:23:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-01-10 06:23:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 219 states have internal predecessors, (332), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-10 06:23:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 415 transitions. [2022-01-10 06:23:59,987 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 415 transitions. Word has length 100 [2022-01-10 06:23:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:23:59,988 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 415 transitions. [2022-01-10 06:23:59,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:23:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 415 transitions. [2022-01-10 06:23:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:23:59,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:23:59,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:00,004 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 06:24:00,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:00,202 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1719114013, now seen corresponding path program 1 times [2022-01-10 06:24:00,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:00,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711122330] [2022-01-10 06:24:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:00,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:00,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:00,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:24:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:00,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:00,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:24:00,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:00,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:00,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711122330] [2022-01-10 06:24:00,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711122330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:00,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:00,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:00,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326604834] [2022-01-10 06:24:00,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:00,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:00,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:00,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:00,614 INFO L87 Difference]: Start difference. First operand 278 states and 415 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:00,690 INFO L93 Difference]: Finished difference Result 547 states and 820 transitions. [2022-01-10 06:24:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:00,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-01-10 06:24:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:00,697 INFO L225 Difference]: With dead ends: 547 [2022-01-10 06:24:00,697 INFO L226 Difference]: Without dead ends: 280 [2022-01-10 06:24:00,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:00,701 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 117 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:00,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1488 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-10 06:24:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-01-10 06:24:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 218 states have (on average 1.5275229357798166) internal successors, (333), 221 states have internal predecessors, (333), 43 states have call successors, (43), 18 states have call predecessors, (43), 18 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2022-01-10 06:24:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 418 transitions. [2022-01-10 06:24:00,731 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 418 transitions. Word has length 101 [2022-01-10 06:24:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:00,731 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 418 transitions. [2022-01-10 06:24:00,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:00,731 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 418 transitions. [2022-01-10 06:24:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:24:00,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:00,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:00,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:00,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:00,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1616443556, now seen corresponding path program 1 times [2022-01-10 06:24:00,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:00,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055313561] [2022-01-10 06:24:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:00,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:00,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:00,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:00,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:24:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:01,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:24:01,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:01,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:01,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055313561] [2022-01-10 06:24:01,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055313561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:01,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:01,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:01,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943478470] [2022-01-10 06:24:01,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:01,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:01,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:01,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:01,282 INFO L87 Difference]: Start difference. First operand 280 states and 418 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:01,336 INFO L93 Difference]: Finished difference Result 549 states and 824 transitions. [2022-01-10 06:24:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:01,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-01-10 06:24:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:01,340 INFO L225 Difference]: With dead ends: 549 [2022-01-10 06:24:01,340 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 06:24:01,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:01,341 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 116 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1477 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 06:24:01,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1477 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 06:24:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 06:24:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 219 states have (on average 1.5251141552511416) internal successors, (334), 223 states have internal predecessors, (334), 43 states have call successors, (43), 18 states have call predecessors, (43), 19 states have return successors, (46), 40 states have call predecessors, (46), 40 states have call successors, (46) [2022-01-10 06:24:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 423 transitions. [2022-01-10 06:24:01,355 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 423 transitions. Word has length 102 [2022-01-10 06:24:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:01,355 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 423 transitions. [2022-01-10 06:24:01,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 423 transitions. [2022-01-10 06:24:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:24:01,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:01,357 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:01,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 06:24:01,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:01,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1155775153, now seen corresponding path program 1 times [2022-01-10 06:24:01,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:01,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764447443] [2022-01-10 06:24:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:01,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:01,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:01,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:01,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:24:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:01,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:01,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:24:01,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:01,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:01,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764447443] [2022-01-10 06:24:01,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764447443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:01,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:01,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:01,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221091128] [2022-01-10 06:24:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:01,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:01,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:01,932 INFO L87 Difference]: Start difference. First operand 282 states and 423 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:01,970 INFO L93 Difference]: Finished difference Result 541 states and 814 transitions. [2022-01-10 06:24:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-01-10 06:24:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:01,974 INFO L225 Difference]: With dead ends: 541 [2022-01-10 06:24:01,974 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 06:24:01,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:01,976 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 115 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:01,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1491 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 06:24:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 06:24:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 219 states have (on average 1.5251141552511416) internal successors, (334), 223 states have internal predecessors, (334), 43 states have call successors, (43), 18 states have call predecessors, (43), 19 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2022-01-10 06:24:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 422 transitions. [2022-01-10 06:24:01,998 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 422 transitions. Word has length 103 [2022-01-10 06:24:01,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:01,998 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 422 transitions. [2022-01-10 06:24:01,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:01,998 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 422 transitions. [2022-01-10 06:24:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:24:01,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:01,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:02,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:02,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:02,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1894197930, now seen corresponding path program 2 times [2022-01-10 06:24:02,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:02,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075206352] [2022-01-10 06:24:02,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:24:02,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:02,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:02,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:02,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:24:02,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:24:02,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:24:02,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:02,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:24:02,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:02,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:02,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075206352] [2022-01-10 06:24:02,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075206352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:02,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:02,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:02,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396347351] [2022-01-10 06:24:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:02,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:02,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:02,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:02,488 INFO L87 Difference]: Start difference. First operand 282 states and 422 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:02,511 INFO L93 Difference]: Finished difference Result 415 states and 604 transitions. [2022-01-10 06:24:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:02,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-01-10 06:24:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:02,513 INFO L225 Difference]: With dead ends: 415 [2022-01-10 06:24:02,513 INFO L226 Difference]: Without dead ends: 285 [2022-01-10 06:24:02,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:02,515 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:02,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 824 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-10 06:24:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2022-01-10 06:24:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 221 states have (on average 1.5203619909502262) internal successors, (336), 225 states have internal predecessors, (336), 43 states have call successors, (43), 18 states have call predecessors, (43), 19 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2022-01-10 06:24:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 424 transitions. [2022-01-10 06:24:02,531 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 424 transitions. Word has length 104 [2022-01-10 06:24:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:02,532 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 424 transitions. [2022-01-10 06:24:02,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 424 transitions. [2022-01-10 06:24:02,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:24:02,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:02,536 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:02,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:02,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:02,745 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1424032819, now seen corresponding path program 1 times [2022-01-10 06:24:02,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:02,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819583385] [2022-01-10 06:24:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:02,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:02,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:02,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:02,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:24:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:02,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:24:02,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:24:03,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:03,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819583385] [2022-01-10 06:24:03,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819583385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:03,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:03,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:03,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192540462] [2022-01-10 06:24:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:03,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:03,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:03,078 INFO L87 Difference]: Start difference. First operand 284 states and 424 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:03,147 INFO L93 Difference]: Finished difference Result 547 states and 821 transitions. [2022-01-10 06:24:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:03,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-01-10 06:24:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:03,149 INFO L225 Difference]: With dead ends: 547 [2022-01-10 06:24:03,149 INFO L226 Difference]: Without dead ends: 286 [2022-01-10 06:24:03,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:03,150 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 113 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:03,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1493 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:24:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-10 06:24:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-01-10 06:24:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 222 states have (on average 1.518018018018018) internal successors, (337), 227 states have internal predecessors, (337), 43 states have call successors, (43), 18 states have call predecessors, (43), 20 states have return successors, (47), 40 states have call predecessors, (47), 40 states have call successors, (47) [2022-01-10 06:24:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 427 transitions. [2022-01-10 06:24:03,159 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 427 transitions. Word has length 110 [2022-01-10 06:24:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:03,160 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 427 transitions. [2022-01-10 06:24:03,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 427 transitions. [2022-01-10 06:24:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:24:03,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:03,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:03,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:03,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:03,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1080124237, now seen corresponding path program 1 times [2022-01-10 06:24:03,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:03,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321829914] [2022-01-10 06:24:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:03,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:03,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:03,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:24:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:03,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:24:03,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:03,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:03,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321829914] [2022-01-10 06:24:03,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321829914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:03,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:03,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:03,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140272571] [2022-01-10 06:24:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:03,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:03,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:03,698 INFO L87 Difference]: Start difference. First operand 286 states and 427 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:03,746 INFO L93 Difference]: Finished difference Result 545 states and 816 transitions. [2022-01-10 06:24:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-01-10 06:24:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:03,748 INFO L225 Difference]: With dead ends: 545 [2022-01-10 06:24:03,748 INFO L226 Difference]: Without dead ends: 286 [2022-01-10 06:24:03,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:03,750 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 114 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:03,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1480 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-10 06:24:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-01-10 06:24:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 222 states have (on average 1.518018018018018) internal successors, (337), 227 states have internal predecessors, (337), 43 states have call successors, (43), 18 states have call predecessors, (43), 20 states have return successors, (46), 40 states have call predecessors, (46), 40 states have call successors, (46) [2022-01-10 06:24:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 426 transitions. [2022-01-10 06:24:03,758 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 426 transitions. Word has length 111 [2022-01-10 06:24:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:03,758 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 426 transitions. [2022-01-10 06:24:03,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 426 transitions. [2022-01-10 06:24:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:24:03,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:03,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:03,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:03,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:03,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1462524280, now seen corresponding path program 2 times [2022-01-10 06:24:03,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012552410] [2022-01-10 06:24:03,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:24:03,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:03,971 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:03,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:24:04,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:24:04,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:24:04,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:04,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:24:04,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:04,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:04,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012552410] [2022-01-10 06:24:04,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012552410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:04,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:04,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:04,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377886944] [2022-01-10 06:24:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:04,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:04,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:04,310 INFO L87 Difference]: Start difference. First operand 286 states and 426 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:04,373 INFO L93 Difference]: Finished difference Result 547 states and 821 transitions. [2022-01-10 06:24:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-01-10 06:24:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:04,375 INFO L225 Difference]: With dead ends: 547 [2022-01-10 06:24:04,375 INFO L226 Difference]: Without dead ends: 288 [2022-01-10 06:24:04,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:04,376 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 112 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1482 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 06:24:04,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1482 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-10 06:24:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-01-10 06:24:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 223 states have (on average 1.515695067264574) internal successors, (338), 229 states have internal predecessors, (338), 43 states have call successors, (43), 18 states have call predecessors, (43), 21 states have return successors, (50), 40 states have call predecessors, (50), 40 states have call successors, (50) [2022-01-10 06:24:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 431 transitions. [2022-01-10 06:24:04,385 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 431 transitions. Word has length 112 [2022-01-10 06:24:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:04,385 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 431 transitions. [2022-01-10 06:24:04,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:24:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 431 transitions. [2022-01-10 06:24:04,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:24:04,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:04,386 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:04,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 06:24:04,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:04,596 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -799541710, now seen corresponding path program 1 times [2022-01-10 06:24:04,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:04,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081085325] [2022-01-10 06:24:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:04,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:04,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:04,598 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:04,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:24:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:04,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:04,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:04,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:04,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:04,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081085325] [2022-01-10 06:24:04,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081085325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:04,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:04,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:04,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384848077] [2022-01-10 06:24:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:04,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:04,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:04,897 INFO L87 Difference]: Start difference. First operand 288 states and 431 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:04,911 INFO L93 Difference]: Finished difference Result 597 states and 907 transitions. [2022-01-10 06:24:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:04,911 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-01-10 06:24:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:04,913 INFO L225 Difference]: With dead ends: 597 [2022-01-10 06:24:04,913 INFO L226 Difference]: Without dead ends: 340 [2022-01-10 06:24:04,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:04,914 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 99 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:04,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 799 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-10 06:24:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 332. [2022-01-10 06:24:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 256 states have (on average 1.53125) internal successors, (392), 262 states have internal predecessors, (392), 54 states have call successors, (54), 18 states have call predecessors, (54), 21 states have return successors, (63), 51 states have call predecessors, (63), 51 states have call successors, (63) [2022-01-10 06:24:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 509 transitions. [2022-01-10 06:24:04,924 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 509 transitions. Word has length 113 [2022-01-10 06:24:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:04,925 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 509 transitions. [2022-01-10 06:24:04,925 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 509 transitions. [2022-01-10 06:24:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:24:04,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:04,926 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:04,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 06:24:05,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:05,136 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1406487480, now seen corresponding path program 1 times [2022-01-10 06:24:05,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:05,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525015741] [2022-01-10 06:24:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:05,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:05,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:05,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:05,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:24:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:05,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:24:05,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:05,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:24:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:05,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:05,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525015741] [2022-01-10 06:24:05,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525015741] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:24:05,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:24:05,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:24:05,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618560938] [2022-01-10 06:24:05,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:24:05,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:24:05,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:24:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:24:05,648 INFO L87 Difference]: Start difference. First operand 332 states and 509 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:24:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:05,878 INFO L93 Difference]: Finished difference Result 789 states and 1256 transitions. [2022-01-10 06:24:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:24:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2022-01-10 06:24:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:05,882 INFO L225 Difference]: With dead ends: 789 [2022-01-10 06:24:05,882 INFO L226 Difference]: Without dead ends: 659 [2022-01-10 06:24:05,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:24:05,883 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 438 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:05,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1898 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:24:05,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-01-10 06:24:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 635. [2022-01-10 06:24:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 495 states have (on average 1.595959595959596) internal successors, (790), 501 states have internal predecessors, (790), 118 states have call successors, (118), 18 states have call predecessors, (118), 21 states have return successors, (137), 115 states have call predecessors, (137), 115 states have call successors, (137) [2022-01-10 06:24:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1045 transitions. [2022-01-10 06:24:05,909 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1045 transitions. Word has length 114 [2022-01-10 06:24:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:05,909 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 1045 transitions. [2022-01-10 06:24:05,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:24:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1045 transitions. [2022-01-10 06:24:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:24:05,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:05,912 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:05,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:06,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:06,121 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:06,122 INFO L85 PathProgramCache]: Analyzing trace with hash 970308843, now seen corresponding path program 1 times [2022-01-10 06:24:06,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:06,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657558595] [2022-01-10 06:24:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:06,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:06,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:06,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:24:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:06,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:06,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:06,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:06,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:06,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657558595] [2022-01-10 06:24:06,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657558595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:06,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:06,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:06,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656749680] [2022-01-10 06:24:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:06,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:06,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:06,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:06,492 INFO L87 Difference]: Start difference. First operand 635 states and 1045 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:06,527 INFO L93 Difference]: Finished difference Result 1510 states and 2522 transitions. [2022-01-10 06:24:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-01-10 06:24:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:06,532 INFO L225 Difference]: With dead ends: 1510 [2022-01-10 06:24:06,532 INFO L226 Difference]: Without dead ends: 943 [2022-01-10 06:24:06,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:06,536 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 97 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:06,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 845 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-01-10 06:24:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 935. [2022-01-10 06:24:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 731 states have (on average 1.6073871409028728) internal successors, (1175), 737 states have internal predecessors, (1175), 182 states have call successors, (182), 18 states have call predecessors, (182), 21 states have return successors, (211), 179 states have call predecessors, (211), 179 states have call successors, (211) [2022-01-10 06:24:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1568 transitions. [2022-01-10 06:24:06,576 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1568 transitions. Word has length 120 [2022-01-10 06:24:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 1568 transitions. [2022-01-10 06:24:06,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1568 transitions. [2022-01-10 06:24:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:24:06,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:06,580 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:06,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:06,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:06,791 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash 955996274, now seen corresponding path program 1 times [2022-01-10 06:24:06,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:06,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770375379] [2022-01-10 06:24:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:06,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:06,793 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:06,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:24:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:06,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:06,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:07,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:07,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:07,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770375379] [2022-01-10 06:24:07,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770375379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:07,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:07,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:07,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888582644] [2022-01-10 06:24:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:07,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:07,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:07,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:07,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:07,083 INFO L87 Difference]: Start difference. First operand 935 states and 1568 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:07,148 INFO L93 Difference]: Finished difference Result 2225 states and 3751 transitions. [2022-01-10 06:24:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:07,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-01-10 06:24:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:07,155 INFO L225 Difference]: With dead ends: 2225 [2022-01-10 06:24:07,155 INFO L226 Difference]: Without dead ends: 1411 [2022-01-10 06:24:07,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:07,159 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 95 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:07,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 837 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-01-10 06:24:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1403. [2022-01-10 06:24:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1104 states have (on average 1.6141304347826086) internal successors, (1782), 1110 states have internal predecessors, (1782), 277 states have call successors, (277), 18 states have call predecessors, (277), 21 states have return successors, (306), 274 states have call predecessors, (306), 274 states have call successors, (306) [2022-01-10 06:24:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2365 transitions. [2022-01-10 06:24:07,234 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2365 transitions. Word has length 121 [2022-01-10 06:24:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:07,234 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 2365 transitions. [2022-01-10 06:24:07,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2365 transitions. [2022-01-10 06:24:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:24:07,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:07,240 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:07,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:07,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:07,450 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:07,450 INFO L85 PathProgramCache]: Analyzing trace with hash -89957207, now seen corresponding path program 1 times [2022-01-10 06:24:07,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873147587] [2022-01-10 06:24:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:07,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:07,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:07,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:24:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:07,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:07,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:07,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:07,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:07,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873147587] [2022-01-10 06:24:07,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873147587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:07,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:07,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:07,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041801644] [2022-01-10 06:24:07,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:07,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:07,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:07,787 INFO L87 Difference]: Start difference. First operand 1403 states and 2365 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:07,843 INFO L93 Difference]: Finished difference Result 3272 states and 5558 transitions. [2022-01-10 06:24:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-01-10 06:24:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:07,853 INFO L225 Difference]: With dead ends: 3272 [2022-01-10 06:24:07,853 INFO L226 Difference]: Without dead ends: 2115 [2022-01-10 06:24:07,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:07,857 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 93 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:07,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 831 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-01-10 06:24:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2107. [2022-01-10 06:24:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1685 states have (on average 1.6195845697329376) internal successors, (2729), 1691 states have internal predecessors, (2729), 400 states have call successors, (400), 18 states have call predecessors, (400), 21 states have return successors, (445), 397 states have call predecessors, (445), 397 states have call successors, (445) [2022-01-10 06:24:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 3574 transitions. [2022-01-10 06:24:07,938 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 3574 transitions. Word has length 122 [2022-01-10 06:24:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 2107 states and 3574 transitions. [2022-01-10 06:24:07,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 3574 transitions. [2022-01-10 06:24:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:24:07,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:07,946 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:07,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:08,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:08,156 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1558186735, now seen corresponding path program 1 times [2022-01-10 06:24:08,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:08,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892984231] [2022-01-10 06:24:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:08,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:08,158 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:08,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:24:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:08,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:08,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:08,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:08,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:08,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892984231] [2022-01-10 06:24:08,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892984231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:08,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:08,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:08,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223383354] [2022-01-10 06:24:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:08,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:08,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:08,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:08,487 INFO L87 Difference]: Start difference. First operand 2107 states and 3574 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:08,571 INFO L93 Difference]: Finished difference Result 4891 states and 8355 transitions. [2022-01-10 06:24:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:08,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-01-10 06:24:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:08,586 INFO L225 Difference]: With dead ends: 4891 [2022-01-10 06:24:08,586 INFO L226 Difference]: Without dead ends: 3234 [2022-01-10 06:24:08,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:08,592 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 91 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:08,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 831 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2022-01-10 06:24:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3226. [2022-01-10 06:24:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 2625 states have (on average 1.6228571428571428) internal successors, (4260), 2631 states have internal predecessors, (4260), 579 states have call successors, (579), 18 states have call predecessors, (579), 21 states have return successors, (650), 576 states have call predecessors, (650), 576 states have call successors, (650) [2022-01-10 06:24:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 5489 transitions. [2022-01-10 06:24:08,718 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 5489 transitions. Word has length 123 [2022-01-10 06:24:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:08,718 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 5489 transitions. [2022-01-10 06:24:08,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 5489 transitions. [2022-01-10 06:24:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:24:08,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:08,728 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:08,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:08,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:08,938 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:08,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash -458782707, now seen corresponding path program 1 times [2022-01-10 06:24:08,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:08,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154414134] [2022-01-10 06:24:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:08,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:08,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:08,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:24:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:09,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:09,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:09,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:09,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154414134] [2022-01-10 06:24:09,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154414134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:09,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:09,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:09,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125020577] [2022-01-10 06:24:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:09,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:09,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:09,263 INFO L87 Difference]: Start difference. First operand 3226 states and 5489 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:09,403 INFO L93 Difference]: Finished difference Result 7809 states and 13354 transitions. [2022-01-10 06:24:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-01-10 06:24:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:09,425 INFO L225 Difference]: With dead ends: 7809 [2022-01-10 06:24:09,425 INFO L226 Difference]: Without dead ends: 5265 [2022-01-10 06:24:09,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:09,435 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 89 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:09,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 850 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2022-01-10 06:24:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5257. [2022-01-10 06:24:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 4280 states have (on average 1.6149532710280374) internal successors, (6912), 4286 states have internal predecessors, (6912), 955 states have call successors, (955), 18 states have call predecessors, (955), 21 states have return successors, (1070), 952 states have call predecessors, (1070), 952 states have call successors, (1070) [2022-01-10 06:24:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8937 transitions. [2022-01-10 06:24:09,657 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8937 transitions. Word has length 124 [2022-01-10 06:24:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:09,658 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 8937 transitions. [2022-01-10 06:24:09,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8937 transitions. [2022-01-10 06:24:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:24:09,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:09,672 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:09,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:09,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:09,881 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1450059347, now seen corresponding path program 1 times [2022-01-10 06:24:09,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:09,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700963082] [2022-01-10 06:24:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:09,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:09,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:09,905 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:09,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:24:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:10,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:10,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:10,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:10,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700963082] [2022-01-10 06:24:10,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700963082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:10,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:10,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:10,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148015788] [2022-01-10 06:24:10,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:10,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:10,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:10,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:10,218 INFO L87 Difference]: Start difference. First operand 5257 states and 8937 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:10,460 INFO L93 Difference]: Finished difference Result 12951 states and 22152 transitions. [2022-01-10 06:24:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:10,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-01-10 06:24:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:10,506 INFO L225 Difference]: With dead ends: 12951 [2022-01-10 06:24:10,506 INFO L226 Difference]: Without dead ends: 8753 [2022-01-10 06:24:10,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:10,522 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 87 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:10,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 837 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2022-01-10 06:24:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 8745. [2022-01-10 06:24:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8745 states, 7162 states have (on average 1.6121195196872382) internal successors, (11546), 7168 states have internal predecessors, (11546), 1561 states have call successors, (1561), 18 states have call predecessors, (1561), 21 states have return successors, (1754), 1558 states have call predecessors, (1754), 1558 states have call successors, (1754) [2022-01-10 06:24:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8745 states to 8745 states and 14861 transitions. [2022-01-10 06:24:10,892 INFO L78 Accepts]: Start accepts. Automaton has 8745 states and 14861 transitions. Word has length 125 [2022-01-10 06:24:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:10,892 INFO L470 AbstractCegarLoop]: Abstraction has 8745 states and 14861 transitions. [2022-01-10 06:24:10,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8745 states and 14861 transitions. [2022-01-10 06:24:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:24:10,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:10,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:10,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:11,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:11,123 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash -54392341, now seen corresponding path program 1 times [2022-01-10 06:24:11,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:11,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264063442] [2022-01-10 06:24:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:11,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:11,125 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:11,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:24:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:11,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:11,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:11,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:11,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:11,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264063442] [2022-01-10 06:24:11,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264063442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:11,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:11,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:11,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862554638] [2022-01-10 06:24:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:11,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:11,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:11,436 INFO L87 Difference]: Start difference. First operand 8745 states and 14861 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:11,798 INFO L93 Difference]: Finished difference Result 22610 states and 38577 transitions. [2022-01-10 06:24:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2022-01-10 06:24:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:11,861 INFO L225 Difference]: With dead ends: 22610 [2022-01-10 06:24:11,861 INFO L226 Difference]: Without dead ends: 15346 [2022-01-10 06:24:11,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:11,964 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 85 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:11,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 846 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2022-01-10 06:24:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 15338. [2022-01-10 06:24:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15338 states, 12552 states have (on average 1.6022944550669216) internal successors, (20112), 12558 states have internal predecessors, (20112), 2764 states have call successors, (2764), 18 states have call predecessors, (2764), 21 states have return successors, (3101), 2761 states have call predecessors, (3101), 2761 states have call successors, (3101) [2022-01-10 06:24:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15338 states to 15338 states and 25977 transitions. [2022-01-10 06:24:12,595 INFO L78 Accepts]: Start accepts. Automaton has 15338 states and 25977 transitions. Word has length 126 [2022-01-10 06:24:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:12,596 INFO L470 AbstractCegarLoop]: Abstraction has 15338 states and 25977 transitions. [2022-01-10 06:24:12,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 15338 states and 25977 transitions. [2022-01-10 06:24:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:24:12,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:12,621 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:12,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:12,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:12,832 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1970450092, now seen corresponding path program 1 times [2022-01-10 06:24:12,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:12,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90151857] [2022-01-10 06:24:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:12,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:12,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:12,839 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:12,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:24:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:13,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:13,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:13,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:13,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:13,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90151857] [2022-01-10 06:24:13,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90151857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:13,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:13,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:13,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108786850] [2022-01-10 06:24:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:13,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:13,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:13,158 INFO L87 Difference]: Start difference. First operand 15338 states and 25977 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:13,836 INFO L93 Difference]: Finished difference Result 40566 states and 69020 transitions. [2022-01-10 06:24:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:13,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2022-01-10 06:24:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:13,948 INFO L225 Difference]: With dead ends: 40566 [2022-01-10 06:24:13,948 INFO L226 Difference]: Without dead ends: 27316 [2022-01-10 06:24:13,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:13,988 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 83 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:13,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 836 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27316 states. [2022-01-10 06:24:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27316 to 27308. [2022-01-10 06:24:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27308 states, 22483 states have (on average 1.5976515589556555) internal successors, (35920), 22489 states have internal predecessors, (35920), 4803 states have call successors, (4803), 18 states have call predecessors, (4803), 21 states have return successors, (5414), 4800 states have call predecessors, (5414), 4800 states have call successors, (5414) [2022-01-10 06:24:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27308 states to 27308 states and 46137 transitions. [2022-01-10 06:24:15,220 INFO L78 Accepts]: Start accepts. Automaton has 27308 states and 46137 transitions. Word has length 127 [2022-01-10 06:24:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:15,220 INFO L470 AbstractCegarLoop]: Abstraction has 27308 states and 46137 transitions. [2022-01-10 06:24:15,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 27308 states and 46137 transitions. [2022-01-10 06:24:15,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:24:15,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:15,390 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:15,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:15,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:15,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash -562245783, now seen corresponding path program 1 times [2022-01-10 06:24:15,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:15,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516530363] [2022-01-10 06:24:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:15,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:15,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:15,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:24:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:15,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:15,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:15,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516530363] [2022-01-10 06:24:15,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516530363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:15,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:15,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:15,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617505979] [2022-01-10 06:24:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:15,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:15,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:15,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:15,991 INFO L87 Difference]: Start difference. First operand 27308 states and 46137 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:17,323 INFO L93 Difference]: Finished difference Result 74353 states and 126087 transitions. [2022-01-10 06:24:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:17,324 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 128 [2022-01-10 06:24:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:17,545 INFO L225 Difference]: With dead ends: 74353 [2022-01-10 06:24:17,545 INFO L226 Difference]: Without dead ends: 49865 [2022-01-10 06:24:17,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:17,606 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 81 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:17,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 837 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49865 states. [2022-01-10 06:24:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49865 to 49857. [2022-01-10 06:24:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49857 states, 41317 states have (on average 1.5916208824454825) internal successors, (65761), 41323 states have internal predecessors, (65761), 8518 states have call successors, (8518), 18 states have call predecessors, (8518), 21 states have return successors, (9661), 8515 states have call predecessors, (9661), 8515 states have call successors, (9661) [2022-01-10 06:24:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49857 states to 49857 states and 83940 transitions. [2022-01-10 06:24:19,912 INFO L78 Accepts]: Start accepts. Automaton has 49857 states and 83940 transitions. Word has length 128 [2022-01-10 06:24:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:19,912 INFO L470 AbstractCegarLoop]: Abstraction has 49857 states and 83940 transitions. [2022-01-10 06:24:19,912 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 49857 states and 83940 transitions. [2022-01-10 06:24:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:24:19,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:19,942 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:19,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:24:20,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:20,153 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1592914964, now seen corresponding path program 1 times [2022-01-10 06:24:20,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:20,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430554949] [2022-01-10 06:24:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:20,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:20,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:20,155 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:20,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:24:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:20,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:24:20,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:24:20,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:20,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:20,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430554949] [2022-01-10 06:24:20,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430554949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:20,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:20,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:24:20,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997733051] [2022-01-10 06:24:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:20,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:24:20,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:24:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:20,498 INFO L87 Difference]: Start difference. First operand 49857 states and 83940 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:22,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:22,788 INFO L93 Difference]: Finished difference Result 92839 states and 156649 transitions. [2022-01-10 06:24:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:24:22,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 129 [2022-01-10 06:24:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:23,278 INFO L225 Difference]: With dead ends: 92839 [2022-01-10 06:24:23,278 INFO L226 Difference]: Without dead ends: 92709 [2022-01-10 06:24:23,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:24:23,315 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 79 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:23,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 836 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92709 states. [2022-01-10 06:24:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92709 to 92701. [2022-01-10 06:24:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92701 states, 77362 states have (on average 1.5840722835500634) internal successors, (122547), 77368 states have internal predecessors, (122547), 15317 states have call successors, (15317), 18 states have call predecessors, (15317), 21 states have return successors, (17506), 15314 states have call predecessors, (17506), 15314 states have call successors, (17506) [2022-01-10 06:24:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92701 states to 92701 states and 155370 transitions. [2022-01-10 06:24:27,194 INFO L78 Accepts]: Start accepts. Automaton has 92701 states and 155370 transitions. Word has length 129 [2022-01-10 06:24:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:27,194 INFO L470 AbstractCegarLoop]: Abstraction has 92701 states and 155370 transitions. [2022-01-10 06:24:27,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 92701 states and 155370 transitions. [2022-01-10 06:24:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:24:27,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:27,234 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:27,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 06:24:27,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:27,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1379119850, now seen corresponding path program 1 times [2022-01-10 06:24:27,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:27,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407720055] [2022-01-10 06:24:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:27,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:27,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:27,451 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:27,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:24:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:27,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:24:27,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:24:27,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:24:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:24:28,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:28,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407720055] [2022-01-10 06:24:28,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407720055] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:24:28,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:24:28,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-01-10 06:24:28,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050117264] [2022-01-10 06:24:28,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:24:28,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:24:28,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:24:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:24:28,148 INFO L87 Difference]: Start difference. First operand 92701 states and 155370 transitions. Second operand has 14 states, 14 states have (on average 11.928571428571429) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-01-10 06:24:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:35,616 INFO L93 Difference]: Finished difference Result 185689 states and 315515 transitions. [2022-01-10 06:24:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:24:35,617 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.928571428571429) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 130 [2022-01-10 06:24:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:36,612 INFO L225 Difference]: With dead ends: 185689 [2022-01-10 06:24:36,612 INFO L226 Difference]: Without dead ends: 185567 [2022-01-10 06:24:36,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-01-10 06:24:36,699 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 1658 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:36,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1689 Valid, 2096 Invalid, 4190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 06:24:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185567 states. [2022-01-10 06:24:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185567 to 185395. [2022-01-10 06:24:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185395 states, 154722 states have (on average 1.584092759917788) internal successors, (245094), 154730 states have internal predecessors, (245094), 30630 states have call successors, (30630), 36 states have call predecessors, (30630), 42 states have return successors, (39372), 30628 states have call predecessors, (39372), 30626 states have call successors, (39372) [2022-01-10 06:24:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185395 states to 185395 states and 315096 transitions. [2022-01-10 06:24:45,311 INFO L78 Accepts]: Start accepts. Automaton has 185395 states and 315096 transitions. Word has length 130 [2022-01-10 06:24:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:24:45,311 INFO L470 AbstractCegarLoop]: Abstraction has 185395 states and 315096 transitions. [2022-01-10 06:24:45,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.928571428571429) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-01-10 06:24:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 185395 states and 315096 transitions. [2022-01-10 06:24:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:24:45,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:24:45,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:24:45,388 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 06:24:45,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:24:45,579 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:24:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:24:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash -837641383, now seen corresponding path program 1 times [2022-01-10 06:24:45,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:24:45,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148054067] [2022-01-10 06:24:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:24:45,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:24:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:24:45,581 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:24:45,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:24:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:24:45,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:24:45,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:24:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:24:45,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:24:45,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:24:45,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148054067] [2022-01-10 06:24:45,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148054067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:24:45,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:24:45,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:24:45,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708154917] [2022-01-10 06:24:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:24:45,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:24:45,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:24:45,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:24:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:24:45,954 INFO L87 Difference]: Start difference. First operand 185395 states and 315096 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:24:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:24:51,973 INFO L93 Difference]: Finished difference Result 275659 states and 468570 transitions. [2022-01-10 06:24:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:24:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2022-01-10 06:24:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:24:52,784 INFO L225 Difference]: With dead ends: 275659 [2022-01-10 06:24:52,785 INFO L226 Difference]: Without dead ends: 182959 [2022-01-10 06:24:52,996 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 06:24:53,002 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 120 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:24:53,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1476 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:24:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182959 states.