/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_spec7_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:28:24,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:28:24,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:28:24,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:28:24,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:28:24,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:28:24,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:28:24,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:28:24,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:28:24,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:28:24,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:28:24,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:28:24,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:28:24,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:28:24,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:28:24,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:28:24,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:28:24,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:28:24,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:28:24,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:28:24,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:28:24,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:28:24,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:28:24,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:28:24,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:28:24,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:28:24,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:28:24,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:28:24,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:28:24,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:28:24,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:28:24,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:28:24,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:28:24,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:28:24,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:28:24,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:28:24,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:28:24,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:28:24,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:28:24,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:28:24,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:28:24,852 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 06:28:24,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:28:24,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:28:24,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:28:24,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:28:24,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:28:24,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:28:24,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:28:24,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:28:24,871 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:28:24,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:28:24,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:28:24,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:28:24,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:28:24,873 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:28:24,874 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:28:24,874 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:28:24,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:28:24,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:28:24,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:28:24,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:28:25,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:28:25,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:28:25,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:28:25,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:28:25,068 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:28:25,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c [2022-01-10 06:28:25,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4ad283c/dee3cd540fcf4335bf434504a1531816/FLAG9f9206314 [2022-01-10 06:28:25,489 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:28:25,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c [2022-01-10 06:28:25,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4ad283c/dee3cd540fcf4335bf434504a1531816/FLAG9f9206314 [2022-01-10 06:28:25,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4ad283c/dee3cd540fcf4335bf434504a1531816 [2022-01-10 06:28:25,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:28:25,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:28:25,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:28:25,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:28:25,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:28:25,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:28:25" (1/1) ... [2022-01-10 06:28:25,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@efecb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:25, skipping insertion in model container [2022-01-10 06:28:25,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:28:25" (1/1) ... [2022-01-10 06:28:25,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:28:25,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:28:26,156 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_spec7_product31.cil.c[7290,7303] [2022-01-10 06:28:26,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:28:26,319 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:28:26,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:28:26,344 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_spec7_product31.cil.c[7290,7303] [2022-01-10 06:28:26,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:28:26,402 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:28:26,420 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_spec7_product31.cil.c[7290,7303] [2022-01-10 06:28:26,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:28:26,508 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:28:26,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26 WrapperNode [2022-01-10 06:28:26,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:28:26,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:28:26,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:28:26,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:28:26,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,582 INFO L137 Inliner]: procedures = 133, calls = 215, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 950 [2022-01-10 06:28:26,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:28:26,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:28:26,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:28:26,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:28:26,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:28:26,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:28:26,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:28:26,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:28:26,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (1/1) ... [2022-01-10 06:28:26,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:28:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:28:26,676 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 06:28:26,699 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 06:28:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:28:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:28:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:28:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:28:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:28:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:28:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:28:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:28:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:28:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:28:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:28:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:28:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:28:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:28:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:28:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:28:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:28:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:28:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:28:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:28:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:28:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:28:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:28:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:28:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:28:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:28:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:28:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:28:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:28:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:28:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:28:26,710 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:28:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:28:26,710 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:28:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:28:26,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:28:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:28:26,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:28:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:28:26,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:28:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:28:26,711 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:28:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:28:26,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:28:26,929 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:28:26,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:28:27,532 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:28:27,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:28:27,550 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:28:27,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:28:27 BoogieIcfgContainer [2022-01-10 06:28:27,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:28:27,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:28:27,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:28:27,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:28:27,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:28:25" (1/3) ... [2022-01-10 06:28:27,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e029a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:28:27, skipping insertion in model container [2022-01-10 06:28:27,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:26" (2/3) ... [2022-01-10 06:28:27,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e029a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:28:27, skipping insertion in model container [2022-01-10 06:28:27,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:28:27" (3/3) ... [2022-01-10 06:28:27,560 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2022-01-10 06:28:27,563 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:28:27,563 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:28:27,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:28:27,612 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 06:28:27,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:28:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-01-10 06:28:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:28:27,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:27,653 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, 1, 1, 1, 1] [2022-01-10 06:28:27,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:27,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1669286504, now seen corresponding path program 1 times [2022-01-10 06:28:27,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:27,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081614251] [2022-01-10 06:28:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:27,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:27,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:27,673 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 06:28:27,678 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 06:28:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:27,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:28:27,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:28,169 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 06:28:28,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:28,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:28,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081614251] [2022-01-10 06:28:28,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081614251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:28,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:28,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:28:28,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97977805] [2022-01-10 06:28:28,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:28,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:28:28,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:28:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:28:28,194 INFO L87 Difference]: Start difference. First operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:28,230 INFO L93 Difference]: Finished difference Result 578 states and 836 transitions. [2022-01-10 06:28:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:28:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2022-01-10 06:28:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:28,247 INFO L225 Difference]: With dead ends: 578 [2022-01-10 06:28:28,248 INFO L226 Difference]: Without dead ends: 359 [2022-01-10 06:28:28,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 119 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 06:28:28,254 INFO L933 BasicCegarLoop]: 537 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, 537 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 06:28:28,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-10 06:28:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-01-10 06:28:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.4945848375451263) internal successors, (414), 280 states have internal predecessors, (414), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-10 06:28:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 529 transitions. [2022-01-10 06:28:28,331 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 529 transitions. Word has length 120 [2022-01-10 06:28:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:28,334 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 529 transitions. [2022-01-10 06:28:28,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 529 transitions. [2022-01-10 06:28:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:28:28,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:28,346 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, 1, 1, 1, 1, 1] [2022-01-10 06:28:28,358 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 06:28:28,546 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 06:28:28,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1463241793, now seen corresponding path program 1 times [2022-01-10 06:28:28,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:28,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207728264] [2022-01-10 06:28:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:28,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:28,550 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 06:28:28,551 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 06:28:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:28,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:28:28,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:28,995 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 06:28:28,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:28,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:28,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207728264] [2022-01-10 06:28:28,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207728264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:28,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:28,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746834134] [2022-01-10 06:28:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:29,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:29,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:29,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:29,002 INFO L87 Difference]: Start difference. First operand 359 states and 529 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:29,080 INFO L93 Difference]: Finished difference Result 709 states and 1048 transitions. [2022-01-10 06:28:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:29,081 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2022-01-10 06:28:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:29,089 INFO L225 Difference]: With dead ends: 709 [2022-01-10 06:28:29,089 INFO L226 Difference]: Without dead ends: 361 [2022-01-10 06:28:29,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 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 06:28:29,091 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 125 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1936 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 06:28:29,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1936 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-01-10 06:28:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-01-10 06:28:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 278 states have (on average 1.4928057553956835) internal successors, (415), 282 states have internal predecessors, (415), 58 states have call successors, (58), 23 states have call predecessors, (58), 24 states have return successors, (59), 57 states have call predecessors, (59), 57 states have call successors, (59) [2022-01-10 06:28:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 532 transitions. [2022-01-10 06:28:29,116 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 532 transitions. Word has length 121 [2022-01-10 06:28:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:29,117 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 532 transitions. [2022-01-10 06:28:29,117 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 532 transitions. [2022-01-10 06:28:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:28:29,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:29,124 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, 1, 1, 1, 1, 1] [2022-01-10 06:28:29,136 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 06:28:29,336 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 06:28:29,337 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1930121142, now seen corresponding path program 1 times [2022-01-10 06:28:29,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:29,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027191612] [2022-01-10 06:28:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:29,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:29,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:29,339 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 06:28:29,341 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 06:28:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:28:29,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:29,765 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 06:28:29,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:29,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:29,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027191612] [2022-01-10 06:28:29,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027191612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:29,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:29,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:29,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228590451] [2022-01-10 06:28:29,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:29,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:29,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:29,768 INFO L87 Difference]: Start difference. First operand 361 states and 532 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:29,839 INFO L93 Difference]: Finished difference Result 711 states and 1052 transitions. [2022-01-10 06:28:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:29,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 122 [2022-01-10 06:28:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:29,843 INFO L225 Difference]: With dead ends: 711 [2022-01-10 06:28:29,843 INFO L226 Difference]: Without dead ends: 363 [2022-01-10 06:28:29,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 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 06:28:29,846 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 124 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1925 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 06:28:29,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1925 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-10 06:28:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-01-10 06:28:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 279 states have (on average 1.4910394265232976) internal successors, (416), 284 states have internal predecessors, (416), 58 states have call successors, (58), 23 states have call predecessors, (58), 25 states have return successors, (63), 57 states have call predecessors, (63), 57 states have call successors, (63) [2022-01-10 06:28:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 537 transitions. [2022-01-10 06:28:29,869 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 537 transitions. Word has length 122 [2022-01-10 06:28:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:29,870 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 537 transitions. [2022-01-10 06:28:29,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 537 transitions. [2022-01-10 06:28:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:28:29,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:29,872 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] [2022-01-10 06:28:29,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 06:28:30,095 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 06:28:30,096 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1373595110, now seen corresponding path program 1 times [2022-01-10 06:28:30,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:30,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302823833] [2022-01-10 06:28:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:30,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:30,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:30,098 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 06:28:30,100 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 06:28:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:30,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:28:30,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:30,500 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 06:28:30,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:30,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:30,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302823833] [2022-01-10 06:28:30,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302823833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:30,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:30,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:30,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166535776] [2022-01-10 06:28:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:30,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:30,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:30,502 INFO L87 Difference]: Start difference. First operand 363 states and 537 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:30,571 INFO L93 Difference]: Finished difference Result 703 states and 1042 transitions. [2022-01-10 06:28:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:30,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2022-01-10 06:28:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:30,574 INFO L225 Difference]: With dead ends: 703 [2022-01-10 06:28:30,574 INFO L226 Difference]: Without dead ends: 363 [2022-01-10 06:28:30,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 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 06:28:30,579 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 123 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1939 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 06:28:30,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1939 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-10 06:28:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-01-10 06:28:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 279 states have (on average 1.4910394265232976) internal successors, (416), 284 states have internal predecessors, (416), 58 states have call successors, (58), 23 states have call predecessors, (58), 25 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2022-01-10 06:28:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 536 transitions. [2022-01-10 06:28:30,592 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 536 transitions. Word has length 123 [2022-01-10 06:28:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:30,593 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 536 transitions. [2022-01-10 06:28:30,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 536 transitions. [2022-01-10 06:28:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:28:30,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:30,595 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] [2022-01-10 06:28:30,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 06:28:30,805 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 06:28:30,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash -900649087, now seen corresponding path program 2 times [2022-01-10 06:28:30,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:30,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954783627] [2022-01-10 06:28:30,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:28:30,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:30,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:30,808 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 06:28:30,809 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 06:28:30,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:28:30,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:28:30,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:30,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:31,103 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 06:28:31,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:31,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:31,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954783627] [2022-01-10 06:28:31,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954783627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:31,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:31,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:31,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330572411] [2022-01-10 06:28:31,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:31,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:31,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:31,105 INFO L87 Difference]: Start difference. First operand 363 states and 536 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:31,118 INFO L93 Difference]: Finished difference Result 572 states and 824 transitions. [2022-01-10 06:28:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-01-10 06:28:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:31,120 INFO L225 Difference]: With dead ends: 572 [2022-01-10 06:28:31,120 INFO L226 Difference]: Without dead ends: 366 [2022-01-10 06:28:31,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:31,121 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1052 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 06:28:31,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1052 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-10 06:28:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2022-01-10 06:28:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 281 states have (on average 1.4875444839857652) internal successors, (418), 286 states have internal predecessors, (418), 58 states have call successors, (58), 23 states have call predecessors, (58), 25 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2022-01-10 06:28:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 538 transitions. [2022-01-10 06:28:31,131 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 538 transitions. Word has length 124 [2022-01-10 06:28:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:31,132 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 538 transitions. [2022-01-10 06:28:31,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 538 transitions. [2022-01-10 06:28:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:28:31,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:31,133 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, 1, 1] [2022-01-10 06:28:31,152 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 06:28:31,343 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 06:28:31,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:31,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2024637912, now seen corresponding path program 1 times [2022-01-10 06:28:31,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:31,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673593725] [2022-01-10 06:28:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:31,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:31,346 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 06:28:31,347 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 06:28:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:31,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:28:31,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:31,729 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 06:28:31,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:31,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:31,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673593725] [2022-01-10 06:28:31,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673593725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:31,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:31,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:31,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322076352] [2022-01-10 06:28:31,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:31,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:31,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:31,732 INFO L87 Difference]: Start difference. First operand 365 states and 538 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:31,782 INFO L93 Difference]: Finished difference Result 709 states and 1049 transitions. [2022-01-10 06:28:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2022-01-10 06:28:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:31,784 INFO L225 Difference]: With dead ends: 709 [2022-01-10 06:28:31,784 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 06:28:31,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 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 06:28:31,785 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 121 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1941 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 06:28:31,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1941 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 06:28:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-01-10 06:28:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 288 states have internal predecessors, (419), 58 states have call successors, (58), 23 states have call predecessors, (58), 26 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2022-01-10 06:28:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 541 transitions. [2022-01-10 06:28:31,795 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 541 transitions. Word has length 130 [2022-01-10 06:28:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:31,796 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 541 transitions. [2022-01-10 06:28:31,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 541 transitions. [2022-01-10 06:28:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:28:31,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:31,797 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, 1] [2022-01-10 06:28:31,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:28:32,010 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 06:28:32,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash -359424042, now seen corresponding path program 1 times [2022-01-10 06:28:32,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:32,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065489829] [2022-01-10 06:28:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:32,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:32,014 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 06:28:32,014 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 06:28:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:28:32,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:32,394 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 06:28:32,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:32,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065489829] [2022-01-10 06:28:32,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065489829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:32,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:32,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:32,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662064307] [2022-01-10 06:28:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:32,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:32,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:32,396 INFO L87 Difference]: Start difference. First operand 367 states and 541 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:32,441 INFO L93 Difference]: Finished difference Result 707 states and 1044 transitions. [2022-01-10 06:28:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-01-10 06:28:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:32,445 INFO L225 Difference]: With dead ends: 707 [2022-01-10 06:28:32,445 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 06:28:32,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:28:32,447 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 122 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1928 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 06:28:32,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1928 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 06:28:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-01-10 06:28:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 288 states have internal predecessors, (419), 58 states have call successors, (58), 23 states have call predecessors, (58), 26 states have return successors, (63), 57 states have call predecessors, (63), 57 states have call successors, (63) [2022-01-10 06:28:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 540 transitions. [2022-01-10 06:28:32,461 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 540 transitions. Word has length 131 [2022-01-10 06:28:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:32,462 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 540 transitions. [2022-01-10 06:28:32,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 540 transitions. [2022-01-10 06:28:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:28:32,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:32,464 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, 1, 1, 1, 1] [2022-01-10 06:28:32,491 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 06:28:32,692 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 06:28:32,694 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:32,695 INFO L85 PathProgramCache]: Analyzing trace with hash 747689352, now seen corresponding path program 2 times [2022-01-10 06:28:32,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:32,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783642917] [2022-01-10 06:28:32,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:28:32,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:32,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:32,697 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 06:28:32,698 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 06:28:32,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:28:32,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:28:32,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:28:32,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:28:33,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:28:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:28:33,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:33,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783642917] [2022-01-10 06:28:33,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783642917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:28:33,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:28:33,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:28:33,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64898079] [2022-01-10 06:28:33,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:28:33,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:28:33,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:28:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:28:33,570 INFO L87 Difference]: Start difference. First operand 367 states and 540 transitions. Second operand has 16 states, 16 states have (on average 9.375) internal successors, (150), 14 states have internal predecessors, (150), 4 states have call successors, (34), 6 states have call predecessors, (34), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31) [2022-01-10 06:28:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:36,632 INFO L93 Difference]: Finished difference Result 1240 states and 1822 transitions. [2022-01-10 06:28:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:28:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.375) internal successors, (150), 14 states have internal predecessors, (150), 4 states have call successors, (34), 6 states have call predecessors, (34), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31) Word has length 132 [2022-01-10 06:28:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:36,636 INFO L225 Difference]: With dead ends: 1240 [2022-01-10 06:28:36,636 INFO L226 Difference]: Without dead ends: 1040 [2022-01-10 06:28:36,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2022-01-10 06:28:36,638 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 3012 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 4936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:28:36,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3071 Valid, 2526 Invalid, 4936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 06:28:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-01-10 06:28:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 731. [2022-01-10 06:28:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 563 states have (on average 1.4902309058614565) internal successors, (839), 572 states have internal predecessors, (839), 114 states have call successors, (114), 47 states have call predecessors, (114), 53 states have return successors, (127), 115 states have call predecessors, (127), 112 states have call successors, (127) [2022-01-10 06:28:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1080 transitions. [2022-01-10 06:28:36,676 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1080 transitions. Word has length 132 [2022-01-10 06:28:36,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:36,677 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 1080 transitions. [2022-01-10 06:28:36,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.375) internal successors, (150), 14 states have internal predecessors, (150), 4 states have call successors, (34), 6 states have call predecessors, (34), 9 states have return successors, (31), 6 states have call predecessors, (31), 4 states have call successors, (31) [2022-01-10 06:28:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1080 transitions. [2022-01-10 06:28:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:28:36,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:36,680 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, 1, 1, 1] [2022-01-10 06:28:36,691 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 06:28:36,888 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 06:28:36,890 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1240342688, now seen corresponding path program 1 times [2022-01-10 06:28:36,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:36,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638473153] [2022-01-10 06:28:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:36,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:36,892 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 06:28:36,893 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 06:28:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:37,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:28:37,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:37,259 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 06:28:37,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:37,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638473153] [2022-01-10 06:28:37,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638473153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:37,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:37,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:37,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205077386] [2022-01-10 06:28:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:37,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:37,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:37,261 INFO L87 Difference]: Start difference. First operand 731 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:37,347 INFO L93 Difference]: Finished difference Result 1425 states and 2114 transitions. [2022-01-10 06:28:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2022-01-10 06:28:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:37,352 INFO L225 Difference]: With dead ends: 1425 [2022-01-10 06:28:37,352 INFO L226 Difference]: Without dead ends: 737 [2022-01-10 06:28:37,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:28:37,357 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 120 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1930 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 06:28:37,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1930 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:37,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-01-10 06:28:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 735. [2022-01-10 06:28:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 565 states have (on average 1.488495575221239) internal successors, (841), 576 states have internal predecessors, (841), 114 states have call successors, (114), 47 states have call predecessors, (114), 55 states have return successors, (132), 115 states have call predecessors, (132), 112 states have call successors, (132) [2022-01-10 06:28:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1087 transitions. [2022-01-10 06:28:37,389 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1087 transitions. Word has length 133 [2022-01-10 06:28:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:37,390 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1087 transitions. [2022-01-10 06:28:37,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1087 transitions. [2022-01-10 06:28:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:28:37,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:37,392 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] [2022-01-10 06:28:37,406 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 06:28:37,603 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 06:28:37,604 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1995788373, now seen corresponding path program 1 times [2022-01-10 06:28:37,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725881971] [2022-01-10 06:28:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:37,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:37,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:37,612 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 06:28:37,623 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 06:28:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:28:37,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:38,004 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 06:28:38,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:38,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:38,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725881971] [2022-01-10 06:28:38,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725881971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:38,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:38,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:28:38,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640051300] [2022-01-10 06:28:38,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:38,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:28:38,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:38,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:28:38,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:28:38,006 INFO L87 Difference]: Start difference. First operand 735 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:38,078 INFO L93 Difference]: Finished difference Result 1433 states and 2126 transitions. [2022-01-10 06:28:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:28:38,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2022-01-10 06:28:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:38,082 INFO L225 Difference]: With dead ends: 1433 [2022-01-10 06:28:38,082 INFO L226 Difference]: Without dead ends: 741 [2022-01-10 06:28:38,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 06:28:38,085 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 120 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:28:38,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1928 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-01-10 06:28:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 735. [2022-01-10 06:28:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 565 states have (on average 1.488495575221239) internal successors, (841), 576 states have internal predecessors, (841), 114 states have call successors, (114), 47 states have call predecessors, (114), 55 states have return successors, (132), 115 states have call predecessors, (132), 112 states have call successors, (132) [2022-01-10 06:28:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1087 transitions. [2022-01-10 06:28:38,115 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1087 transitions. Word has length 134 [2022-01-10 06:28:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:38,115 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1087 transitions. [2022-01-10 06:28:38,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-01-10 06:28:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1087 transitions. [2022-01-10 06:28:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:28:38,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:38,118 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] [2022-01-10 06:28:38,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 06:28:38,324 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 06:28:38,324 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash 422115693, now seen corresponding path program 1 times [2022-01-10 06:28:38,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520296520] [2022-01-10 06:28:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:38,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:38,327 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 06:28:38,329 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 06:28:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:38,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:38,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:38,671 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 06:28:38,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:38,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:38,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520296520] [2022-01-10 06:28:38,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520296520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:38,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:38,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:38,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902955848] [2022-01-10 06:28:38,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:38,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:38,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:38,673 INFO L87 Difference]: Start difference. First operand 735 states and 1087 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:38,710 INFO L93 Difference]: Finished difference Result 1533 states and 2302 transitions. [2022-01-10 06:28:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:38,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2022-01-10 06:28:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:38,714 INFO L225 Difference]: With dead ends: 1533 [2022-01-10 06:28:38,714 INFO L226 Difference]: Without dead ends: 849 [2022-01-10 06:28:38,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:38,716 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 107 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1029 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 06:28:38,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1029 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-10 06:28:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 833. [2022-01-10 06:28:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 641 states have (on average 1.5054602184087365) internal successors, (965), 652 states have internal predecessors, (965), 136 states have call successors, (136), 47 states have call predecessors, (136), 55 states have return successors, (162), 137 states have call predecessors, (162), 134 states have call successors, (162) [2022-01-10 06:28:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1263 transitions. [2022-01-10 06:28:38,743 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1263 transitions. Word has length 134 [2022-01-10 06:28:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:38,743 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1263 transitions. [2022-01-10 06:28:38,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1263 transitions. [2022-01-10 06:28:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 06:28:38,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:38,746 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] [2022-01-10 06:28:38,757 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 06:28:38,955 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 06:28:38,955 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash 53837146, now seen corresponding path program 1 times [2022-01-10 06:28:38,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:38,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308452680] [2022-01-10 06:28:38,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:38,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:38,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:38,958 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 06:28:38,960 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 06:28:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:39,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:28:39,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:39,323 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 06:28:39,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:28:39,510 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 06:28:39,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:39,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308452680] [2022-01-10 06:28:39,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308452680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:28:39,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:28:39,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:28:39,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95768063] [2022-01-10 06:28:39,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:28:39,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:28:39,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:28:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:28:39,512 INFO L87 Difference]: Start difference. First operand 833 states and 1263 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-01-10 06:28:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:39,732 INFO L93 Difference]: Finished difference Result 1951 states and 3073 transitions. [2022-01-10 06:28:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:28:39,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 135 [2022-01-10 06:28:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:39,740 INFO L225 Difference]: With dead ends: 1951 [2022-01-10 06:28:39,741 INFO L226 Difference]: Without dead ends: 1537 [2022-01-10 06:28:39,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 264 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 06:28:39,744 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 470 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:28:39,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 1967 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:28:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-01-10 06:28:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1489. [2022-01-10 06:28:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1169 states have (on average 1.5748502994011977) internal successors, (1841), 1180 states have internal predecessors, (1841), 264 states have call successors, (264), 47 states have call predecessors, (264), 55 states have return successors, (330), 265 states have call predecessors, (330), 262 states have call successors, (330) [2022-01-10 06:28:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2435 transitions. [2022-01-10 06:28:39,806 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2435 transitions. Word has length 135 [2022-01-10 06:28:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:39,807 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 2435 transitions. [2022-01-10 06:28:39,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-01-10 06:28:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2435 transitions. [2022-01-10 06:28:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 06:28:39,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:39,812 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 06:28:39,830 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 06:28:40,023 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 06:28:40,023 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1030609929, now seen corresponding path program 1 times [2022-01-10 06:28:40,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:40,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501844032] [2022-01-10 06:28:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:40,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:40,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:40,026 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 06:28:40,028 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 06:28:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:40,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:40,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:40,389 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 06:28:40,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:40,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:40,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501844032] [2022-01-10 06:28:40,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501844032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:40,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:40,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:40,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149701366] [2022-01-10 06:28:40,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:40,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:40,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:40,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:40,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:40,391 INFO L87 Difference]: Start difference. First operand 1489 states and 2435 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:40,474 INFO L93 Difference]: Finished difference Result 3519 states and 5852 transitions. [2022-01-10 06:28:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:40,476 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2022-01-10 06:28:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:40,485 INFO L225 Difference]: With dead ends: 3519 [2022-01-10 06:28:40,486 INFO L226 Difference]: Without dead ends: 2155 [2022-01-10 06:28:40,490 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 06:28:40,490 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 105 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1073 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 06:28:40,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1073 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2022-01-10 06:28:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2139. [2022-01-10 06:28:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1691 states have (on average 1.5913660555884093) internal successors, (2691), 1702 states have internal predecessors, (2691), 392 states have call successors, (392), 47 states have call predecessors, (392), 55 states have return successors, (498), 393 states have call predecessors, (498), 390 states have call successors, (498) [2022-01-10 06:28:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3581 transitions. [2022-01-10 06:28:40,578 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3581 transitions. Word has length 141 [2022-01-10 06:28:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:40,578 INFO L470 AbstractCegarLoop]: Abstraction has 2139 states and 3581 transitions. [2022-01-10 06:28:40,579 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3581 transitions. [2022-01-10 06:28:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:28:40,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:40,587 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 06:28:40,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:28:40,804 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 06:28:40,805 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1247143635, now seen corresponding path program 1 times [2022-01-10 06:28:40,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:40,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296963709] [2022-01-10 06:28:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:40,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:40,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:40,807 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 06:28:40,809 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 06:28:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:41,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:41,172 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 06:28:41,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:41,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296963709] [2022-01-10 06:28:41,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296963709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:41,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:41,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:41,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426346676] [2022-01-10 06:28:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:41,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:41,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:41,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:41,174 INFO L87 Difference]: Start difference. First operand 2139 states and 3581 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:41,291 INFO L93 Difference]: Finished difference Result 5079 states and 8570 transitions. [2022-01-10 06:28:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:41,292 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2022-01-10 06:28:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:41,305 INFO L225 Difference]: With dead ends: 5079 [2022-01-10 06:28:41,305 INFO L226 Difference]: Without dead ends: 3171 [2022-01-10 06:28:41,312 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 06:28:41,313 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 103 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1064 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 06:28:41,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1064 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:41,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-01-10 06:28:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3155. [2022-01-10 06:28:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 2517 states have (on average 1.6023043305522446) internal successors, (4033), 2528 states have internal predecessors, (4033), 582 states have call successors, (582), 47 states have call predecessors, (582), 55 states have return successors, (720), 583 states have call predecessors, (720), 580 states have call successors, (720) [2022-01-10 06:28:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 5335 transitions. [2022-01-10 06:28:41,445 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 5335 transitions. Word has length 142 [2022-01-10 06:28:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:41,445 INFO L470 AbstractCegarLoop]: Abstraction has 3155 states and 5335 transitions. [2022-01-10 06:28:41,445 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 5335 transitions. [2022-01-10 06:28:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:28:41,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:41,469 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 06:28:41,481 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 06:28:41,678 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 06:28:41,678 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1832333977, now seen corresponding path program 1 times [2022-01-10 06:28:41,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:41,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011756819] [2022-01-10 06:28:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:41,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:41,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:41,681 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 06:28:41,712 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 06:28:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:41,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:41,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:42,051 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 06:28:42,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:42,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:42,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011756819] [2022-01-10 06:28:42,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011756819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:42,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:42,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:42,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465048929] [2022-01-10 06:28:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:42,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:42,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:42,053 INFO L87 Difference]: Start difference. First operand 3155 states and 5335 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:42,215 INFO L93 Difference]: Finished difference Result 7383 states and 12604 transitions. [2022-01-10 06:28:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:42,216 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-01-10 06:28:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:42,233 INFO L225 Difference]: With dead ends: 7383 [2022-01-10 06:28:42,233 INFO L226 Difference]: Without dead ends: 4709 [2022-01-10 06:28:42,241 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 06:28:42,241 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 101 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1066 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 06:28:42,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1066 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2022-01-10 06:28:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4693. [2022-01-10 06:28:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4693 states, 3809 states have (on average 1.610658965607771) internal successors, (6135), 3820 states have internal predecessors, (6135), 828 states have call successors, (828), 47 states have call predecessors, (828), 55 states have return successors, (1050), 829 states have call predecessors, (1050), 826 states have call successors, (1050) [2022-01-10 06:28:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 8013 transitions. [2022-01-10 06:28:42,460 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 8013 transitions. Word has length 143 [2022-01-10 06:28:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:42,461 INFO L470 AbstractCegarLoop]: Abstraction has 4693 states and 8013 transitions. [2022-01-10 06:28:42,461 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 8013 transitions. [2022-01-10 06:28:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 06:28:42,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:42,480 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 06:28:42,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:28:42,691 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 06:28:42,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 650022478, now seen corresponding path program 1 times [2022-01-10 06:28:42,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969652258] [2022-01-10 06:28:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:42,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:42,694 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 06:28:42,695 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 06:28:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:42,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:42,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:43,048 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 06:28:43,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:43,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:43,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969652258] [2022-01-10 06:28:43,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969652258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:43,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:43,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:43,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683302726] [2022-01-10 06:28:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:43,050 INFO L87 Difference]: Start difference. First operand 4693 states and 8013 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:43,255 INFO L93 Difference]: Finished difference Result 10971 states and 18898 transitions. [2022-01-10 06:28:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:43,255 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-01-10 06:28:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:43,295 INFO L225 Difference]: With dead ends: 10971 [2022-01-10 06:28:43,295 INFO L226 Difference]: Without dead ends: 7167 [2022-01-10 06:28:43,308 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 06:28:43,309 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 99 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1066 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 06:28:43,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1066 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:43,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2022-01-10 06:28:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7151. [2022-01-10 06:28:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 5909 states have (on average 1.616009477068878) internal successors, (9549), 5920 states have internal predecessors, (9549), 1186 states have call successors, (1186), 47 states have call predecessors, (1186), 55 states have return successors, (1548), 1187 states have call predecessors, (1548), 1184 states have call successors, (1548) [2022-01-10 06:28:43,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 12283 transitions. [2022-01-10 06:28:43,669 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 12283 transitions. Word has length 144 [2022-01-10 06:28:43,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:43,669 INFO L470 AbstractCegarLoop]: Abstraction has 7151 states and 12283 transitions. [2022-01-10 06:28:43,670 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 12283 transitions. [2022-01-10 06:28:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 06:28:43,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:43,698 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 06:28:43,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:28:43,904 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 06:28:43,904 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1670565547, now seen corresponding path program 1 times [2022-01-10 06:28:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444323129] [2022-01-10 06:28:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:43,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:43,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:43,906 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 06:28:43,909 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 06:28:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:44,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:44,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:44,297 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 06:28:44,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:44,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:44,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444323129] [2022-01-10 06:28:44,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444323129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:44,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:44,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:44,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860109231] [2022-01-10 06:28:44,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:44,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:44,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:44,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:44,299 INFO L87 Difference]: Start difference. First operand 7151 states and 12283 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:44,627 INFO L93 Difference]: Finished difference Result 16867 states and 29236 transitions. [2022-01-10 06:28:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:44,628 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-01-10 06:28:44,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:44,671 INFO L225 Difference]: With dead ends: 16867 [2022-01-10 06:28:44,671 INFO L226 Difference]: Without dead ends: 11229 [2022-01-10 06:28:44,689 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 06:28:44,689 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 97 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1074 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 06:28:44,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1074 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11229 states. [2022-01-10 06:28:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11229 to 11213. [2022-01-10 06:28:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 9219 states have (on average 1.6111291897168891) internal successors, (14853), 9230 states have internal predecessors, (14853), 1938 states have call successors, (1938), 47 states have call predecessors, (1938), 55 states have return successors, (2544), 1939 states have call predecessors, (2544), 1936 states have call successors, (2544) [2022-01-10 06:28:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 19335 transitions. [2022-01-10 06:28:45,252 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 19335 transitions. Word has length 145 [2022-01-10 06:28:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:45,252 INFO L470 AbstractCegarLoop]: Abstraction has 11213 states and 19335 transitions. [2022-01-10 06:28:45,252 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 19335 transitions. [2022-01-10 06:28:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 06:28:45,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:45,292 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:45,304 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 06:28:45,507 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 06:28:45,507 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash -318180462, now seen corresponding path program 1 times [2022-01-10 06:28:45,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472705603] [2022-01-10 06:28:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:45,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:45,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:45,509 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 06:28:45,511 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 06:28:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:45,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:45,881 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 06:28:45,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:45,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:45,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472705603] [2022-01-10 06:28:45,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472705603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:45,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:45,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:45,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939512024] [2022-01-10 06:28:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:45,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:45,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:45,883 INFO L87 Difference]: Start difference. First operand 11213 states and 19335 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:46,535 INFO L93 Difference]: Finished difference Result 27541 states and 47712 transitions. [2022-01-10 06:28:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:46,535 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2022-01-10 06:28:46,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:46,608 INFO L225 Difference]: With dead ends: 27541 [2022-01-10 06:28:46,609 INFO L226 Difference]: Without dead ends: 18595 [2022-01-10 06:28:46,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 06:28:46,647 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 95 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1064 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 06:28:46,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1064 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18595 states. [2022-01-10 06:28:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18595 to 18579. [2022-01-10 06:28:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18579 states, 15373 states have (on average 1.6096402784101997) internal successors, (24745), 15384 states have internal predecessors, (24745), 3150 states have call successors, (3150), 47 states have call predecessors, (3150), 55 states have return successors, (4056), 3151 states have call predecessors, (4056), 3148 states have call successors, (4056) [2022-01-10 06:28:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18579 states to 18579 states and 31951 transitions. [2022-01-10 06:28:47,616 INFO L78 Accepts]: Start accepts. Automaton has 18579 states and 31951 transitions. Word has length 146 [2022-01-10 06:28:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:47,616 INFO L470 AbstractCegarLoop]: Abstraction has 18579 states and 31951 transitions. [2022-01-10 06:28:47,617 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18579 states and 31951 transitions. [2022-01-10 06:28:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 06:28:47,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:47,801 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:47,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 06:28:48,001 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 06:28:48,001 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1742569149, now seen corresponding path program 1 times [2022-01-10 06:28:48,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159222989] [2022-01-10 06:28:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:48,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:48,004 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 06:28:48,019 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 06:28:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:48,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:48,455 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 06:28:48,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:48,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:48,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159222989] [2022-01-10 06:28:48,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159222989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:48,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:48,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:48,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147202518] [2022-01-10 06:28:48,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:48,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:48,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:48,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:48,457 INFO L87 Difference]: Start difference. First operand 18579 states and 31951 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:49,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:49,457 INFO L93 Difference]: Finished difference Result 47909 states and 82804 transitions. [2022-01-10 06:28:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:49,459 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2022-01-10 06:28:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:49,584 INFO L225 Difference]: With dead ends: 47909 [2022-01-10 06:28:49,584 INFO L226 Difference]: Without dead ends: 32501 [2022-01-10 06:28:49,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:49,624 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 93 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1073 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 06:28:49,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1073 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:49,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32501 states. [2022-01-10 06:28:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32501 to 32485. [2022-01-10 06:28:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32485 states, 26873 states have (on average 1.601198228705392) internal successors, (43029), 26884 states have internal predecessors, (43029), 5556 states have call successors, (5556), 47 states have call predecessors, (5556), 55 states have return successors, (7168), 5557 states have call predecessors, (7168), 5554 states have call successors, (7168) [2022-01-10 06:28:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32485 states to 32485 states and 55753 transitions. [2022-01-10 06:28:51,510 INFO L78 Accepts]: Start accepts. Automaton has 32485 states and 55753 transitions. Word has length 147 [2022-01-10 06:28:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:51,510 INFO L470 AbstractCegarLoop]: Abstraction has 32485 states and 55753 transitions. [2022-01-10 06:28:51,510 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 32485 states and 55753 transitions. [2022-01-10 06:28:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 06:28:51,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:51,581 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:51,592 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 06:28:51,790 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 06:28:51,791 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:51,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 670755283, now seen corresponding path program 1 times [2022-01-10 06:28:51,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:51,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398114650] [2022-01-10 06:28:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:51,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:51,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:51,793 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 06:28:51,811 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 06:28:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:52,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:52,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:52,184 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 06:28:52,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:52,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:52,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398114650] [2022-01-10 06:28:52,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398114650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:52,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:52,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:52,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796184918] [2022-01-10 06:28:52,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:52,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:52,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:52,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:52,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:52,185 INFO L87 Difference]: Start difference. First operand 32485 states and 55753 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:54,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:28:54,064 INFO L93 Difference]: Finished difference Result 85841 states and 148132 transitions. [2022-01-10 06:28:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:28:54,065 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-01-10 06:28:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:28:54,321 INFO L225 Difference]: With dead ends: 85841 [2022-01-10 06:28:54,321 INFO L226 Difference]: Without dead ends: 57811 [2022-01-10 06:28:54,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 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 06:28:54,406 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 91 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1064 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 06:28:54,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1064 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:28:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57811 states. [2022-01-10 06:28:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57811 to 57795. [2022-01-10 06:28:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57795 states, 48105 states have (on average 1.597276790354433) internal successors, (76837), 48116 states have internal predecessors, (76837), 9634 states have call successors, (9634), 47 states have call predecessors, (9634), 55 states have return successors, (12600), 9635 states have call predecessors, (12600), 9632 states have call successors, (12600) [2022-01-10 06:28:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57795 states to 57795 states and 99071 transitions. [2022-01-10 06:28:57,391 INFO L78 Accepts]: Start accepts. Automaton has 57795 states and 99071 transitions. Word has length 148 [2022-01-10 06:28:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:28:57,392 INFO L470 AbstractCegarLoop]: Abstraction has 57795 states and 99071 transitions. [2022-01-10 06:28:57,392 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:28:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 57795 states and 99071 transitions. [2022-01-10 06:28:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 06:28:57,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:28:57,496 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:57,509 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 06:28:57,707 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 06:28:57,708 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:28:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:28:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1842213723, now seen corresponding path program 1 times [2022-01-10 06:28:57,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:28:57,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156656114] [2022-01-10 06:28:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:28:57,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:28:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:28:57,710 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 06:28:57,711 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 06:28:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:28:57,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:28:57,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:28:58,065 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 06:28:58,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:28:58,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:28:58,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156656114] [2022-01-10 06:28:58,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156656114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:28:58,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:28:58,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:28:58,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938621354] [2022-01-10 06:28:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:28:58,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:28:58,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:28:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:28:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:28:58,068 INFO L87 Difference]: Start difference. First operand 57795 states and 99071 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:29:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:01,760 INFO L93 Difference]: Finished difference Result 157365 states and 269816 transitions. [2022-01-10 06:29:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2022-01-10 06:29:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:02,384 INFO L225 Difference]: With dead ends: 157365 [2022-01-10 06:29:02,384 INFO L226 Difference]: Without dead ends: 105569 [2022-01-10 06:29:02,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 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 06:29:02,513 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 89 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1073 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 06:29:02,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1073 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105569 states. [2022-01-10 06:29:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105569 to 105553. [2022-01-10 06:29:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105553 states, 88433 states have (on average 1.591883120554544) internal successors, (140775), 88444 states have internal predecessors, (140775), 17064 states have call successors, (17064), 47 states have call predecessors, (17064), 55 states have return successors, (21626), 17065 states have call predecessors, (21626), 17062 states have call successors, (21626) [2022-01-10 06:29:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105553 states to 105553 states and 179465 transitions. [2022-01-10 06:29:07,890 INFO L78 Accepts]: Start accepts. Automaton has 105553 states and 179465 transitions. Word has length 149 [2022-01-10 06:29:07,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:07,891 INFO L470 AbstractCegarLoop]: Abstraction has 105553 states and 179465 transitions. [2022-01-10 06:29:07,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:29:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 105553 states and 179465 transitions. [2022-01-10 06:29:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 06:29:08,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:08,022 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:29:08,034 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 06:29:08,222 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 06:29:08,223 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 801751667, now seen corresponding path program 1 times [2022-01-10 06:29:08,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:08,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546252733] [2022-01-10 06:29:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:08,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:08,225 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 06:29:08,411 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 06:29:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:08,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:08,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:08,784 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 06:29:08,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:08,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:08,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546252733] [2022-01-10 06:29:08,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546252733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:08,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:08,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:08,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253515178] [2022-01-10 06:29:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:08,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:08,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:08,786 INFO L87 Difference]: Start difference. First operand 105553 states and 179465 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:29:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:14,905 INFO L93 Difference]: Finished difference Result 196901 states and 335559 transitions. [2022-01-10 06:29:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2022-01-10 06:29:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:15,762 INFO L225 Difference]: With dead ends: 196901 [2022-01-10 06:29:15,762 INFO L226 Difference]: Without dead ends: 196487 [2022-01-10 06:29:15,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 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 06:29:15,843 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 87 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1064 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 06:29:15,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1064 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196487 states. [2022-01-10 06:29:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196487 to 196471. [2022-01-10 06:29:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196471 states, 165753 states have (on average 1.5849788540780558) internal successors, (262715), 165764 states have internal predecessors, (262715), 30662 states have call successors, (30662), 47 states have call predecessors, (30662), 55 states have return successors, (39408), 30663 states have call predecessors, (39408), 30660 states have call successors, (39408) [2022-01-10 06:29:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196471 states to 196471 states and 332785 transitions. [2022-01-10 06:29:25,828 INFO L78 Accepts]: Start accepts. Automaton has 196471 states and 332785 transitions. Word has length 150 [2022-01-10 06:29:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:25,828 INFO L470 AbstractCegarLoop]: Abstraction has 196471 states and 332785 transitions. [2022-01-10 06:29:25,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:29:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand 196471 states and 332785 transitions.