/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_spec0_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:19:25,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:19:25,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:19:25,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:19:25,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:19:25,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:19:25,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:19:25,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:19:25,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:19:25,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:19:25,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:19:25,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:19:25,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:19:25,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:19:25,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:19:25,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:19:25,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:19:25,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:19:25,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:19:25,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:19:25,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:19:25,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:19:25,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:19:25,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:19:25,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:19:25,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:19:25,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:19:25,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:19:25,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:19:25,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:19:25,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:19:25,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:19:25,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:19:25,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:19:25,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:19:25,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:19:25,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:19:25,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:19:25,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:19:25,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:19:25,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:19:25,249 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 06:19:25,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:19:25,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:19:25,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:19:25,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:19:25,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:19:25,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:19:25,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:19:25,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:19:25,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:19:25,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:19:25,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:19:25,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:19:25,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:19:25,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:19:25,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:19:25,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:19:25,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:19:25,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:19:25,478 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:19:25,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c [2022-01-10 06:19:25,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e71febb/4bb7befccff1470d8bb814a6fd1e0c1f/FLAGd4549634b [2022-01-10 06:19:25,919 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:19:25,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c [2022-01-10 06:19:25,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e71febb/4bb7befccff1470d8bb814a6fd1e0c1f/FLAGd4549634b [2022-01-10 06:19:25,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e71febb/4bb7befccff1470d8bb814a6fd1e0c1f [2022-01-10 06:19:25,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:19:25,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:19:25,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:19:25,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:19:25,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:19:25,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:25" (1/1) ... [2022-01-10 06:19:25,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5514b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:25, skipping insertion in model container [2022-01-10 06:19:25,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:25" (1/1) ... [2022-01-10 06:19:25,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:19:26,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:19:26,226 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_spec0_product16.cil.c[7449,7462] [2022-01-10 06:19:26,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:19:26,403 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:19:26,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:19:26,418 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_spec0_product16.cil.c[7449,7462] [2022-01-10 06:19:26,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:19:26,472 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:19:26,492 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_spec0_product16.cil.c[7449,7462] [2022-01-10 06:19:26,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:19:26,573 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:19:26,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26 WrapperNode [2022-01-10 06:19:26,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:19:26,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:19:26,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:19:26,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:19:26,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,654 INFO L137 Inliner]: procedures = 127, calls = 195, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 925 [2022-01-10 06:19:26,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:19:26,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:19:26,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:19:26,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:19:26,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:19:26,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:19:26,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:19:26,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:19:26,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (1/1) ... [2022-01-10 06:19:26,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:19:26,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:19:26,737 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 06:19:26,757 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 06:19:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:19:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:19:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:19:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:19:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:19:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:19:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:19:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:19:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:19:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:19:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:19:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:19:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:19:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:19:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:19:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:19:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:19:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:19:26,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:19:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:19:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:19:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:19:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:19:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:19:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:19:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:19:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:19:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:19:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:19:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:19:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:19:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:19:26,982 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:19:26,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:19:27,452 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:19:27,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:19:27,463 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:19:27,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:27 BoogieIcfgContainer [2022-01-10 06:19:27,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:19:27,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:19:27,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:19:27,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:19:27,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:19:25" (1/3) ... [2022-01-10 06:19:27,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27624caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:27, skipping insertion in model container [2022-01-10 06:19:27,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:26" (2/3) ... [2022-01-10 06:19:27,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27624caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:27, skipping insertion in model container [2022-01-10 06:19:27,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:27" (3/3) ... [2022-01-10 06:19:27,472 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.c [2022-01-10 06:19:27,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:19:27,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:19:27,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:19:27,524 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 06:19:27,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:19:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-10 06:19:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:19:27,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:27,572 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:27,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -702970754, now seen corresponding path program 1 times [2022-01-10 06:19:27,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:27,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227501704] [2022-01-10 06:19:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:27,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:27,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:27,594 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 06:19:27,595 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 06:19:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:19:27,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 06:19:28,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:28,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:28,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227501704] [2022-01-10 06:19:28,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227501704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:28,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:28,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:19:28,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481636656] [2022-01-10 06:19:28,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:28,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:19:28,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:19:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:19:28,083 INFO L87 Difference]: Start difference. First operand has 299 states, 235 states have (on average 1.5319148936170213) internal successors, (360), 239 states have internal predecessors, (360), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:28,138 INFO L93 Difference]: Finished difference Result 444 states and 654 transitions. [2022-01-10 06:19:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:19:28,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2022-01-10 06:19:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:28,154 INFO L225 Difference]: With dead ends: 444 [2022-01-10 06:19:28,154 INFO L226 Difference]: Without dead ends: 292 [2022-01-10 06:19:28,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 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 06:19:28,160 INFO L933 BasicCegarLoop]: 446 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, 446 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 06:19:28,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-10 06:19:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-01-10 06:19:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 229 states have (on average 1.5240174672489082) internal successors, (349), 232 states have internal predecessors, (349), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-10 06:19:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 438 transitions. [2022-01-10 06:19:28,258 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 438 transitions. Word has length 115 [2022-01-10 06:19:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:28,259 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 438 transitions. [2022-01-10 06:19:28,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 438 transitions. [2022-01-10 06:19:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:19:28,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:28,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:28,281 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 06:19:28,478 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 06:19:28,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash -703418094, now seen corresponding path program 1 times [2022-01-10 06:19:28,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:28,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904655909] [2022-01-10 06:19:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:28,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:28,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:28,486 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 06:19:28,488 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 06:19:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:28,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:19:28,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:19:28,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:28,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904655909] [2022-01-10 06:19:28,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904655909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:28,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:28,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:28,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633030668] [2022-01-10 06:19:28,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:28,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:28,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:28,877 INFO L87 Difference]: Start difference. First operand 292 states and 438 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:28,939 INFO L93 Difference]: Finished difference Result 575 states and 866 transitions. [2022-01-10 06:19:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:28,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-01-10 06:19:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:28,945 INFO L225 Difference]: With dead ends: 575 [2022-01-10 06:19:28,946 INFO L226 Difference]: Without dead ends: 294 [2022-01-10 06:19:28,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 06:19:28,948 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 125 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1572 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 06:19:28,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1572 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-10 06:19:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-01-10 06:19:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 230 states have (on average 1.5217391304347827) internal successors, (350), 234 states have internal predecessors, (350), 45 states have call successors, (45), 17 states have call predecessors, (45), 18 states have return successors, (46), 44 states have call predecessors, (46), 44 states have call successors, (46) [2022-01-10 06:19:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 441 transitions. [2022-01-10 06:19:28,963 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 441 transitions. Word has length 116 [2022-01-10 06:19:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:28,963 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 441 transitions. [2022-01-10 06:19:28,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 441 transitions. [2022-01-10 06:19:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:19:28,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:28,969 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:28,978 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 06:19:29,175 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 06:19:29,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -923563095, now seen corresponding path program 1 times [2022-01-10 06:19:29,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:29,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764466879] [2022-01-10 06:19:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:29,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:29,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:29,178 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 06:19:29,179 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 06:19:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:29,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:29,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:19:29,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:29,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:29,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764466879] [2022-01-10 06:19:29,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764466879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:29,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:29,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:29,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405195144] [2022-01-10 06:19:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:29,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:29,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:29,576 INFO L87 Difference]: Start difference. First operand 294 states and 441 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:29,645 INFO L93 Difference]: Finished difference Result 577 states and 870 transitions. [2022-01-10 06:19:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2022-01-10 06:19:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:29,648 INFO L225 Difference]: With dead ends: 577 [2022-01-10 06:19:29,648 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 06:19:29,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 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 06:19:29,651 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 124 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1561 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 06:19:29,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1561 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 06:19:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 06:19:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 231 states have (on average 1.5194805194805194) internal successors, (351), 236 states have internal predecessors, (351), 45 states have call successors, (45), 17 states have call predecessors, (45), 19 states have return successors, (50), 44 states have call predecessors, (50), 44 states have call successors, (50) [2022-01-10 06:19:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 446 transitions. [2022-01-10 06:19:29,670 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 446 transitions. Word has length 117 [2022-01-10 06:19:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:29,670 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 446 transitions. [2022-01-10 06:19:29,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 446 transitions. [2022-01-10 06:19:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:19:29,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:29,672 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:29,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:29,884 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 06:19:29,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2030452064, now seen corresponding path program 1 times [2022-01-10 06:19:29,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:29,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885248138] [2022-01-10 06:19:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:29,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:29,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:29,886 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 06:19:29,888 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 06:19:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:30,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:19:30,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:19:30,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:30,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:30,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885248138] [2022-01-10 06:19:30,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885248138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:30,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:30,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:30,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318213287] [2022-01-10 06:19:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:30,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:30,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:30,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:30,254 INFO L87 Difference]: Start difference. First operand 296 states and 446 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:30,295 INFO L93 Difference]: Finished difference Result 569 states and 860 transitions. [2022-01-10 06:19:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:30,296 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-01-10 06:19:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:30,297 INFO L225 Difference]: With dead ends: 569 [2022-01-10 06:19:30,301 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 06:19:30,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 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 06:19:30,307 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 123 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1575 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 06:19:30,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1575 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 06:19:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 06:19:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 231 states have (on average 1.5194805194805194) internal successors, (351), 236 states have internal predecessors, (351), 45 states have call successors, (45), 17 states have call predecessors, (45), 19 states have return successors, (49), 44 states have call predecessors, (49), 44 states have call successors, (49) [2022-01-10 06:19:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 445 transitions. [2022-01-10 06:19:30,318 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 445 transitions. Word has length 118 [2022-01-10 06:19:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:30,318 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 445 transitions. [2022-01-10 06:19:30,318 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 445 transitions. [2022-01-10 06:19:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 06:19:30,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:30,324 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:30,335 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 06:19:30,524 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 06:19:30,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1423707303, now seen corresponding path program 2 times [2022-01-10 06:19:30,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:30,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953508975] [2022-01-10 06:19:30,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:19:30,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:30,526 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 06:19:30,528 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 06:19:30,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:19:30,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:19:30,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:30,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-10 06:19:30,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:30,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953508975] [2022-01-10 06:19:30,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953508975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:30,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:30,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:30,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312442502] [2022-01-10 06:19:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:30,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:30,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:30,847 INFO L87 Difference]: Start difference. First operand 296 states and 445 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:30,862 INFO L93 Difference]: Finished difference Result 438 states and 642 transitions. [2022-01-10 06:19:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:30,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2022-01-10 06:19:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:30,864 INFO L225 Difference]: With dead ends: 438 [2022-01-10 06:19:30,864 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 06:19:30,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 06:19:30,865 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 1 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 870 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 06:19:30,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 870 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 06:19:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2022-01-10 06:19:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 233 states have (on average 1.5150214592274678) internal successors, (353), 238 states have internal predecessors, (353), 45 states have call successors, (45), 17 states have call predecessors, (45), 19 states have return successors, (49), 44 states have call predecessors, (49), 44 states have call successors, (49) [2022-01-10 06:19:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 447 transitions. [2022-01-10 06:19:30,876 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 447 transitions. Word has length 119 [2022-01-10 06:19:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:30,876 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 447 transitions. [2022-01-10 06:19:30,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 447 transitions. [2022-01-10 06:19:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:19:30,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:30,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:30,888 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 06:19:31,088 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 06:19:31,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash 763724418, now seen corresponding path program 1 times [2022-01-10 06:19:31,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:31,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751563647] [2022-01-10 06:19:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:31,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:31,091 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 06:19:31,092 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 06:19:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:31,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:19:31,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:19:31,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:31,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751563647] [2022-01-10 06:19:31,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751563647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:31,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:31,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:31,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174612871] [2022-01-10 06:19:31,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:31,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:31,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:31,434 INFO L87 Difference]: Start difference. First operand 298 states and 447 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:31,477 INFO L93 Difference]: Finished difference Result 575 states and 867 transitions. [2022-01-10 06:19:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:31,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2022-01-10 06:19:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:31,479 INFO L225 Difference]: With dead ends: 575 [2022-01-10 06:19:31,479 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 06:19:31,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 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 06:19:31,480 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 121 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:31,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1577 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 06:19:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-01-10 06:19:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 234 states have (on average 1.5128205128205128) internal successors, (354), 240 states have internal predecessors, (354), 45 states have call successors, (45), 17 states have call predecessors, (45), 20 states have return successors, (51), 44 states have call predecessors, (51), 44 states have call successors, (51) [2022-01-10 06:19:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 450 transitions. [2022-01-10 06:19:31,488 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 450 transitions. Word has length 125 [2022-01-10 06:19:31,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:31,489 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 450 transitions. [2022-01-10 06:19:31,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 450 transitions. [2022-01-10 06:19:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:19:31,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:31,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:31,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 06:19:31,700 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 06:19:31,700 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1207109444, now seen corresponding path program 1 times [2022-01-10 06:19:31,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:31,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283268097] [2022-01-10 06:19:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:31,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:31,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:31,702 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 06:19:31,703 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 06:19:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:31,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:31,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:19:32,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:32,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:32,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283268097] [2022-01-10 06:19:32,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283268097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:32,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:32,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:32,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820723456] [2022-01-10 06:19:32,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:32,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:32,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:32,022 INFO L87 Difference]: Start difference. First operand 300 states and 450 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:32,090 INFO L93 Difference]: Finished difference Result 573 states and 862 transitions. [2022-01-10 06:19:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:32,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 126 [2022-01-10 06:19:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:32,092 INFO L225 Difference]: With dead ends: 573 [2022-01-10 06:19:32,092 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 06:19:32,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 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 06:19:32,093 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 122 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1564 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 06:19:32,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1564 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 06:19:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-01-10 06:19:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 234 states have (on average 1.5128205128205128) internal successors, (354), 240 states have internal predecessors, (354), 45 states have call successors, (45), 17 states have call predecessors, (45), 20 states have return successors, (50), 44 states have call predecessors, (50), 44 states have call successors, (50) [2022-01-10 06:19:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 449 transitions. [2022-01-10 06:19:32,101 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 449 transitions. Word has length 126 [2022-01-10 06:19:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:32,101 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 449 transitions. [2022-01-10 06:19:32,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 449 transitions. [2022-01-10 06:19:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:19:32,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:32,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:32,115 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 06:19:32,307 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 06:19:32,307 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1506295527, now seen corresponding path program 2 times [2022-01-10 06:19:32,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325410232] [2022-01-10 06:19:32,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:19:32,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:32,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:32,309 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 06:19:32,311 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 06:19:32,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:19:32,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:19:32,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:32,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 06:19:32,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:32,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:32,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325410232] [2022-01-10 06:19:32,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325410232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:32,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:32,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:19:32,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113028868] [2022-01-10 06:19:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:32,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:32,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:32,657 INFO L87 Difference]: Start difference. First operand 300 states and 449 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:32,713 INFO L93 Difference]: Finished difference Result 728 states and 1072 transitions. [2022-01-10 06:19:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:19:32,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2022-01-10 06:19:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:32,716 INFO L225 Difference]: With dead ends: 728 [2022-01-10 06:19:32,716 INFO L226 Difference]: Without dead ends: 597 [2022-01-10 06:19:32,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:19:32,717 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 393 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:32,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1835 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-01-10 06:19:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 569. [2022-01-10 06:19:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 448 states have (on average 1.5290178571428572) internal successors, (685), 457 states have internal predecessors, (685), 84 states have call successors, (84), 33 states have call predecessors, (84), 36 states have return successors, (88), 82 states have call predecessors, (88), 82 states have call successors, (88) [2022-01-10 06:19:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 857 transitions. [2022-01-10 06:19:32,734 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 857 transitions. Word has length 127 [2022-01-10 06:19:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:32,735 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 857 transitions. [2022-01-10 06:19:32,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 857 transitions. [2022-01-10 06:19:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:19:32,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:32,737 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:32,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:32,945 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 06:19:32,945 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash -630135750, now seen corresponding path program 1 times [2022-01-10 06:19:32,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:32,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518248874] [2022-01-10 06:19:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:32,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:32,948 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 06:19:32,949 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 06:19:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:33,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:33,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:19:33,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:33,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:33,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518248874] [2022-01-10 06:19:33,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518248874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:33,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:33,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:33,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648161148] [2022-01-10 06:19:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:33,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:33,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:33,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:33,267 INFO L87 Difference]: Start difference. First operand 569 states and 857 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:33,336 INFO L93 Difference]: Finished difference Result 1115 states and 1686 transitions. [2022-01-10 06:19:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2022-01-10 06:19:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:33,340 INFO L225 Difference]: With dead ends: 1115 [2022-01-10 06:19:33,340 INFO L226 Difference]: Without dead ends: 573 [2022-01-10 06:19:33,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 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 06:19:33,343 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 120 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1566 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 06:19:33,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1566 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-10 06:19:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2022-01-10 06:19:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 449 states have (on average 1.5278396436525612) internal successors, (686), 459 states have internal predecessors, (686), 84 states have call successors, (84), 33 states have call predecessors, (84), 37 states have return successors, (92), 82 states have call predecessors, (92), 82 states have call successors, (92) [2022-01-10 06:19:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 862 transitions. [2022-01-10 06:19:33,360 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 862 transitions. Word has length 128 [2022-01-10 06:19:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:33,360 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 862 transitions. [2022-01-10 06:19:33,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:19:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 862 transitions. [2022-01-10 06:19:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:19:33,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:33,362 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:33,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:33,572 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 06:19:33,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1376559188, now seen corresponding path program 1 times [2022-01-10 06:19:33,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073985445] [2022-01-10 06:19:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:33,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:33,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:33,574 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 06:19:33,575 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 06:19:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:33,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:33,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:33,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:33,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073985445] [2022-01-10 06:19:33,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073985445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:33,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:33,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:33,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142134652] [2022-01-10 06:19:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:33,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:33,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:33,893 INFO L87 Difference]: Start difference. First operand 571 states and 862 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:33,912 INFO L93 Difference]: Finished difference Result 1225 states and 1871 transitions. [2022-01-10 06:19:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:33,913 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-01-10 06:19:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:33,915 INFO L225 Difference]: With dead ends: 1225 [2022-01-10 06:19:33,916 INFO L226 Difference]: Without dead ends: 685 [2022-01-10 06:19:33,917 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 06:19:33,918 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 107 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 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 06:19:33,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 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 06:19:33,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-01-10 06:19:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 669. [2022-01-10 06:19:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 525 states have (on average 1.542857142857143) internal successors, (810), 535 states have internal predecessors, (810), 106 states have call successors, (106), 33 states have call predecessors, (106), 37 states have return successors, (116), 104 states have call predecessors, (116), 104 states have call successors, (116) [2022-01-10 06:19:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1032 transitions. [2022-01-10 06:19:33,954 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1032 transitions. Word has length 129 [2022-01-10 06:19:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:33,954 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 1032 transitions. [2022-01-10 06:19:33,955 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1032 transitions. [2022-01-10 06:19:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:19:33,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:33,957 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:33,967 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 06:19:34,167 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 06:19:34,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1045042478, now seen corresponding path program 1 times [2022-01-10 06:19:34,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935096198] [2022-01-10 06:19:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:34,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:34,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:34,169 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 06:19:34,170 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 06:19:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:34,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:19:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:34,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:19:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:34,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:34,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935096198] [2022-01-10 06:19:34,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935096198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:19:34,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:19:34,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:19:34,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853010347] [2022-01-10 06:19:34,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:19:34,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:19:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:19:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:19:34,718 INFO L87 Difference]: Start difference. First operand 669 states and 1032 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-01-10 06:19:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:34,932 INFO L93 Difference]: Finished difference Result 1526 states and 2409 transitions. [2022-01-10 06:19:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:19:34,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 130 [2022-01-10 06:19:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:34,942 INFO L225 Difference]: With dead ends: 1526 [2022-01-10 06:19:34,942 INFO L226 Difference]: Without dead ends: 1246 [2022-01-10 06:19:34,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 254 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 06:19:34,944 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 612 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:19:34,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1610 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:19:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-10 06:19:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1206. [2022-01-10 06:19:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 959 states have (on average 1.5912408759124088) internal successors, (1526), 969 states have internal predecessors, (1526), 209 states have call successors, (209), 33 states have call predecessors, (209), 37 states have return successors, (229), 207 states have call predecessors, (229), 207 states have call successors, (229) [2022-01-10 06:19:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1964 transitions. [2022-01-10 06:19:34,987 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1964 transitions. Word has length 130 [2022-01-10 06:19:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:34,987 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1964 transitions. [2022-01-10 06:19:34,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-01-10 06:19:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1964 transitions. [2022-01-10 06:19:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:19:34,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:34,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:35,003 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 06:19:35,201 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 06:19:35,202 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:35,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash -367038987, now seen corresponding path program 1 times [2022-01-10 06:19:35,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:35,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480707080] [2022-01-10 06:19:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:35,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:35,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:35,204 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 06:19:35,206 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 06:19:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:35,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:35,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:35,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:35,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480707080] [2022-01-10 06:19:35,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480707080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:35,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:35,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:35,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039022232] [2022-01-10 06:19:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:35,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:35,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:35,523 INFO L87 Difference]: Start difference. First operand 1206 states and 1964 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:35,582 INFO L93 Difference]: Finished difference Result 2891 states and 4761 transitions. [2022-01-10 06:19:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:35,582 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-01-10 06:19:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:35,598 INFO L225 Difference]: With dead ends: 2891 [2022-01-10 06:19:35,598 INFO L226 Difference]: Without dead ends: 1753 [2022-01-10 06:19:35,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 06:19:35,601 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 105 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 893 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 06:19:35,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 893 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-01-10 06:19:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1737. [2022-01-10 06:19:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1387 states have (on average 1.6005767844268204) internal successors, (2220), 1397 states have internal predecessors, (2220), 312 states have call successors, (312), 33 states have call predecessors, (312), 37 states have return successors, (342), 310 states have call predecessors, (342), 310 states have call successors, (342) [2022-01-10 06:19:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2874 transitions. [2022-01-10 06:19:35,658 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2874 transitions. Word has length 136 [2022-01-10 06:19:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:35,658 INFO L470 AbstractCegarLoop]: Abstraction has 1737 states and 2874 transitions. [2022-01-10 06:19:35,659 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2874 transitions. [2022-01-10 06:19:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:19:35,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:35,666 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:35,693 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 06:19:35,879 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 06:19:35,879 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:35,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash 573365780, now seen corresponding path program 1 times [2022-01-10 06:19:35,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:35,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092812946] [2022-01-10 06:19:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:35,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:35,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:35,881 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 06:19:35,883 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 06:19:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:36,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:36,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:36,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:36,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:36,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092812946] [2022-01-10 06:19:36,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092812946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:36,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:36,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:36,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943268422] [2022-01-10 06:19:36,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:36,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:36,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:36,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:36,227 INFO L87 Difference]: Start difference. First operand 1737 states and 2874 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:36,292 INFO L93 Difference]: Finished difference Result 4198 states and 6984 transitions. [2022-01-10 06:19:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:36,292 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-01-10 06:19:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:36,303 INFO L225 Difference]: With dead ends: 4198 [2022-01-10 06:19:36,303 INFO L226 Difference]: Without dead ends: 2582 [2022-01-10 06:19:36,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 06:19:36,309 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 103 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 882 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 06:19:36,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 882 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2022-01-10 06:19:36,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2566. [2022-01-10 06:19:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2062 states have (on average 1.6066925315227933) internal successors, (3313), 2072 states have internal predecessors, (3313), 466 states have call successors, (466), 33 states have call predecessors, (466), 37 states have return successors, (496), 464 states have call predecessors, (496), 464 states have call successors, (496) [2022-01-10 06:19:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 4275 transitions. [2022-01-10 06:19:36,422 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 4275 transitions. Word has length 137 [2022-01-10 06:19:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:36,422 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 4275 transitions. [2022-01-10 06:19:36,423 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 4275 transitions. [2022-01-10 06:19:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 06:19:36,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:36,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:36,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:19:36,642 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 06:19:36,642 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash -853924685, now seen corresponding path program 1 times [2022-01-10 06:19:36,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:36,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024454049] [2022-01-10 06:19:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:36,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:36,644 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 06:19:36,646 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 06:19:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:36,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:36,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:36,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:36,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:36,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024454049] [2022-01-10 06:19:36,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024454049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:36,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:36,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:36,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537375589] [2022-01-10 06:19:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:36,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:36,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:36,994 INFO L87 Difference]: Start difference. First operand 2566 states and 4275 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:37,077 INFO L93 Difference]: Finished difference Result 6193 states and 10383 transitions. [2022-01-10 06:19:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:37,077 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-01-10 06:19:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:37,091 INFO L225 Difference]: With dead ends: 6193 [2022-01-10 06:19:37,091 INFO L226 Difference]: Without dead ends: 3873 [2022-01-10 06:19:37,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 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 06:19:37,098 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 101 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 877 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 06:19:37,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 877 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-01-10 06:19:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3857. [2022-01-10 06:19:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3147 states have (on average 1.613282491261519) internal successors, (5077), 3157 states have internal predecessors, (5077), 672 states have call successors, (672), 33 states have call predecessors, (672), 37 states have return successors, (718), 670 states have call predecessors, (718), 670 states have call successors, (718) [2022-01-10 06:19:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 6467 transitions. [2022-01-10 06:19:37,246 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 6467 transitions. Word has length 138 [2022-01-10 06:19:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:37,246 INFO L470 AbstractCegarLoop]: Abstraction has 3857 states and 6467 transitions. [2022-01-10 06:19:37,246 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 6467 transitions. [2022-01-10 06:19:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:19:37,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:37,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:37,273 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 06:19:37,468 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 06:19:37,469 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash 183265715, now seen corresponding path program 1 times [2022-01-10 06:19:37,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:37,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892164297] [2022-01-10 06:19:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:37,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:37,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:37,471 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 06:19:37,472 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 06:19:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:37,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:37,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:37,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:37,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892164297] [2022-01-10 06:19:37,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892164297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:37,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:37,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:37,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976698267] [2022-01-10 06:19:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:37,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:37,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:37,808 INFO L87 Difference]: Start difference. First operand 3857 states and 6467 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:37,959 INFO L93 Difference]: Finished difference Result 9423 states and 15889 transitions. [2022-01-10 06:19:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:37,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2022-01-10 06:19:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:37,985 INFO L225 Difference]: With dead ends: 9423 [2022-01-10 06:19:37,986 INFO L226 Difference]: Without dead ends: 6016 [2022-01-10 06:19:37,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 06:19:37,995 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 99 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 877 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 06:19:37,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 877 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2022-01-10 06:19:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 6000. [2022-01-10 06:19:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4980 states have (on average 1.6190763052208836) internal successors, (8063), 4990 states have internal predecessors, (8063), 982 states have call successors, (982), 33 states have call predecessors, (982), 37 states have return successors, (1054), 980 states have call predecessors, (1054), 980 states have call successors, (1054) [2022-01-10 06:19:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 10099 transitions. [2022-01-10 06:19:38,275 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 10099 transitions. Word has length 139 [2022-01-10 06:19:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:38,276 INFO L470 AbstractCegarLoop]: Abstraction has 6000 states and 10099 transitions. [2022-01-10 06:19:38,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 10099 transitions. [2022-01-10 06:19:38,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:19:38,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:38,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:38,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:19:38,506 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 06:19:38,507 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -902653161, now seen corresponding path program 1 times [2022-01-10 06:19:38,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:38,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754055311] [2022-01-10 06:19:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:38,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:38,509 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 06:19:38,510 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 06:19:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:38,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:38,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:38,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:38,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754055311] [2022-01-10 06:19:38,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754055311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:38,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:38,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:38,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539504851] [2022-01-10 06:19:38,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:38,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:38,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:38,852 INFO L87 Difference]: Start difference. First operand 6000 states and 10099 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:39,082 INFO L93 Difference]: Finished difference Result 14574 states and 24712 transitions. [2022-01-10 06:19:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-01-10 06:19:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:39,116 INFO L225 Difference]: With dead ends: 14574 [2022-01-10 06:19:39,116 INFO L226 Difference]: Without dead ends: 9789 [2022-01-10 06:19:39,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 06:19:39,128 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 97 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 886 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 06:19:39,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 886 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2022-01-10 06:19:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 9773. [2022-01-10 06:19:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9773 states, 8051 states have (on average 1.6176872438206433) internal successors, (13024), 8061 states have internal predecessors, (13024), 1684 states have call successors, (1684), 33 states have call predecessors, (1684), 37 states have return successors, (1800), 1682 states have call predecessors, (1800), 1682 states have call successors, (1800) [2022-01-10 06:19:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 16508 transitions. [2022-01-10 06:19:39,508 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 16508 transitions. Word has length 140 [2022-01-10 06:19:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:39,508 INFO L470 AbstractCegarLoop]: Abstraction has 9773 states and 16508 transitions. [2022-01-10 06:19:39,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 16508 transitions. [2022-01-10 06:19:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 06:19:39,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:39,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:39,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:19:39,742 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 06:19:39,743 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash -31694001, now seen corresponding path program 1 times [2022-01-10 06:19:39,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664279820] [2022-01-10 06:19:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:39,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:39,745 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 06:19:39,746 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 06:19:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:39,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:39,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:40,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:40,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:40,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664279820] [2022-01-10 06:19:40,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664279820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:40,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:40,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:40,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240624184] [2022-01-10 06:19:40,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:40,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:40,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:40,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:40,075 INFO L87 Difference]: Start difference. First operand 9773 states and 16508 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:40,541 INFO L93 Difference]: Finished difference Result 24993 states and 42441 transitions. [2022-01-10 06:19:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2022-01-10 06:19:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:40,592 INFO L225 Difference]: With dead ends: 24993 [2022-01-10 06:19:40,592 INFO L226 Difference]: Without dead ends: 16752 [2022-01-10 06:19:40,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 06:19:40,617 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 95 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 883 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 06:19:40,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 883 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16752 states. [2022-01-10 06:19:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16752 to 16736. [2022-01-10 06:19:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16736 states, 13870 states have (on average 1.6149242970439799) internal successors, (22399), 13880 states have internal predecessors, (22399), 2828 states have call successors, (2828), 33 states have call predecessors, (2828), 37 states have return successors, (3022), 2826 states have call predecessors, (3022), 2826 states have call successors, (3022) [2022-01-10 06:19:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16736 states to 16736 states and 28249 transitions. [2022-01-10 06:19:41,269 INFO L78 Accepts]: Start accepts. Automaton has 16736 states and 28249 transitions. Word has length 141 [2022-01-10 06:19:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:41,269 INFO L470 AbstractCegarLoop]: Abstraction has 16736 states and 28249 transitions. [2022-01-10 06:19:41,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16736 states and 28249 transitions. [2022-01-10 06:19:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:19:41,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:41,304 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:41,318 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 06:19:41,517 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 06:19:41,518 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1132322551, now seen corresponding path program 1 times [2022-01-10 06:19:41,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:41,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456393729] [2022-01-10 06:19:41,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:41,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:41,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:41,520 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 06:19:41,521 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 06:19:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:41,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:41,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:41,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:41,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:41,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456393729] [2022-01-10 06:19:41,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456393729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:41,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:41,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:41,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085011422] [2022-01-10 06:19:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:41,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:41,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:41,861 INFO L87 Difference]: Start difference. First operand 16736 states and 28249 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:42,722 INFO L93 Difference]: Finished difference Result 44745 states and 75779 transitions. [2022-01-10 06:19:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2022-01-10 06:19:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:42,821 INFO L225 Difference]: With dead ends: 44745 [2022-01-10 06:19:42,821 INFO L226 Difference]: Without dead ends: 30163 [2022-01-10 06:19:42,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 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 06:19:42,852 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 93 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 904 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 06:19:42,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 904 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:42,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30163 states. [2022-01-10 06:19:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30163 to 30147. [2022-01-10 06:19:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30147 states, 24962 states have (on average 1.6052399647464146) internal successors, (40070), 24972 states have internal predecessors, (40070), 5147 states have call successors, (5147), 33 states have call predecessors, (5147), 37 states have return successors, (5485), 5145 states have call predecessors, (5485), 5145 states have call successors, (5485) [2022-01-10 06:19:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30147 states to 30147 states and 50702 transitions. [2022-01-10 06:19:43,989 INFO L78 Accepts]: Start accepts. Automaton has 30147 states and 50702 transitions. Word has length 142 [2022-01-10 06:19:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:43,989 INFO L470 AbstractCegarLoop]: Abstraction has 30147 states and 50702 transitions. [2022-01-10 06:19:43,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 30147 states and 50702 transitions. [2022-01-10 06:19:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:19:44,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:44,056 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:44,068 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 06:19:44,266 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 06:19:44,266 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:44,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash 490899918, now seen corresponding path program 1 times [2022-01-10 06:19:44,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:44,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449613019] [2022-01-10 06:19:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:44,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:44,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:44,269 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 06:19:44,295 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 06:19:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:44,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:44,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:44,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449613019] [2022-01-10 06:19:44,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449613019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:44,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:44,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:44,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607947307] [2022-01-10 06:19:44,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:44,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:44,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:44,628 INFO L87 Difference]: Start difference. First operand 30147 states and 50702 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:46,234 INFO L93 Difference]: Finished difference Result 82041 states and 138499 transitions. [2022-01-10 06:19:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 143 [2022-01-10 06:19:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:46,425 INFO L225 Difference]: With dead ends: 82041 [2022-01-10 06:19:46,425 INFO L226 Difference]: Without dead ends: 54910 [2022-01-10 06:19:46,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 06:19:46,476 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 91 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 882 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 06:19:46,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 882 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54910 states. [2022-01-10 06:19:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54910 to 54894. [2022-01-10 06:19:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54894 states, 45724 states have (on average 1.600538010672732) internal successors, (73183), 45734 states have internal predecessors, (73183), 9132 states have call successors, (9132), 33 states have call predecessors, (9132), 37 states have return successors, (9744), 9130 states have call predecessors, (9744), 9130 states have call successors, (9744) [2022-01-10 06:19:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54894 states to 54894 states and 92059 transitions. [2022-01-10 06:19:48,706 INFO L78 Accepts]: Start accepts. Automaton has 54894 states and 92059 transitions. Word has length 143 [2022-01-10 06:19:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:48,707 INFO L470 AbstractCegarLoop]: Abstraction has 54894 states and 92059 transitions. [2022-01-10 06:19:48,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 54894 states and 92059 transitions. [2022-01-10 06:19:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 06:19:48,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:48,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:48,771 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 06:19:48,971 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 06:19:48,971 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash 245033735, now seen corresponding path program 1 times [2022-01-10 06:19:48,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:48,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616619200] [2022-01-10 06:19:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:48,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:48,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:48,974 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 06:19:48,995 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 06:19:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:49,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:49,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:49,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:49,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616619200] [2022-01-10 06:19:49,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616619200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:49,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:49,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:49,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3136523] [2022-01-10 06:19:49,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:49,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:49,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:49,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:49,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:49,357 INFO L87 Difference]: Start difference. First operand 54894 states and 92059 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:52,176 INFO L93 Difference]: Finished difference Result 152891 states and 257137 transitions. [2022-01-10 06:19:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:19:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 144 [2022-01-10 06:19:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:52,716 INFO L225 Difference]: With dead ends: 152891 [2022-01-10 06:19:52,716 INFO L226 Difference]: Without dead ends: 102023 [2022-01-10 06:19:52,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 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 06:19:52,830 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 89 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 883 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 06:19:52,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 883 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102023 states. [2022-01-10 06:19:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102023 to 102007. [2022-01-10 06:19:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102007 states, 85512 states have (on average 1.5943844138834316) internal successors, (136339), 85522 states have internal predecessors, (136339), 16457 states have call successors, (16457), 33 states have call predecessors, (16457), 37 states have return successors, (17601), 16455 states have call predecessors, (17601), 16455 states have call successors, (17601) [2022-01-10 06:19:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102007 states to 102007 states and 170397 transitions. [2022-01-10 06:19:57,532 INFO L78 Accepts]: Start accepts. Automaton has 102007 states and 170397 transitions. Word has length 144 [2022-01-10 06:19:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:57,533 INFO L470 AbstractCegarLoop]: Abstraction has 102007 states and 170397 transitions. [2022-01-10 06:19:57,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:19:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 102007 states and 170397 transitions. [2022-01-10 06:19:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 06:19:57,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:57,766 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:57,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:19:57,966 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 06:19:57,971 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash -140069234, now seen corresponding path program 1 times [2022-01-10 06:19:57,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:57,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733112164] [2022-01-10 06:19:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:57,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:57,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:57,973 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 06:19:57,974 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 06:19:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:58,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:19:58,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:19:58,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:58,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:58,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733112164] [2022-01-10 06:19:58,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733112164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:58,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:58,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:19:58,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910786046] [2022-01-10 06:19:58,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:58,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:19:58,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:19:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:19:58,334 INFO L87 Difference]: Start difference. First operand 102007 states and 170397 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:20:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:03,277 INFO L93 Difference]: Finished difference Result 191466 states and 320324 transitions. [2022-01-10 06:20:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 145 [2022-01-10 06:20:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:03,956 INFO L225 Difference]: With dead ends: 191466 [2022-01-10 06:20:03,956 INFO L226 Difference]: Without dead ends: 191186 [2022-01-10 06:20:04,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 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 06:20:04,045 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 87 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 882 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 06:20:04,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 882 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191186 states. [2022-01-10 06:20:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191186 to 191170. [2022-01-10 06:20:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191170 states, 161364 states have (on average 1.5868037480478918) internal successors, (256053), 161374 states have internal predecessors, (256053), 29768 states have call successors, (29768), 33 states have call predecessors, (29768), 37 states have return successors, (31958), 29766 states have call predecessors, (31958), 29766 states have call successors, (31958) [2022-01-10 06:20:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191170 states to 191170 states and 317779 transitions. [2022-01-10 06:20:12,397 INFO L78 Accepts]: Start accepts. Automaton has 191170 states and 317779 transitions. Word has length 145 [2022-01-10 06:20:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:12,397 INFO L470 AbstractCegarLoop]: Abstraction has 191170 states and 317779 transitions. [2022-01-10 06:20:12,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:20:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 191170 states and 317779 transitions. [2022-01-10 06:20:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 06:20:12,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:12,486 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:12,495 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 06:20:12,693 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 06:20:12,693 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:12,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:12,694 INFO L85 PathProgramCache]: Analyzing trace with hash -863810296, now seen corresponding path program 1 times [2022-01-10 06:20:12,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:12,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327533613] [2022-01-10 06:20:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:12,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:12,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:12,696 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 06:20:12,696 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 06:20:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:12,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:20:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:20:13,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:13,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327533613] [2022-01-10 06:20:13,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327533613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:13,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:13,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:20:13,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079636690] [2022-01-10 06:20:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:13,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:20:13,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:20:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:20:13,550 INFO L87 Difference]: Start difference. First operand 191170 states and 317779 transitions. Second operand has 12 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-01-10 06:20:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:25,278 INFO L93 Difference]: Finished difference Result 381628 states and 645005 transitions. [2022-01-10 06:20:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:20:25,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 146 [2022-01-10 06:20:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:27,297 INFO L225 Difference]: With dead ends: 381628 [2022-01-10 06:20:27,297 INFO L226 Difference]: Without dead ends: 381362 [2022-01-10 06:20:27,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:20:27,467 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 1288 mSDsluCounter, 4005 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 4699 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:20:27,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 4699 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 06:20:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381362 states.