/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_spec8_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:29:31,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:29:31,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:29:31,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:29:31,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:29:31,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:29:31,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:29:31,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:29:31,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:29:31,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:29:31,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:29:31,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:29:31,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:29:31,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:29:31,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:29:31,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:29:31,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:29:31,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:29:31,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:29:31,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:29:31,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:29:31,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:29:31,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:29:31,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:29:31,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:29:31,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:29:31,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:29:31,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:29:31,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:29:31,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:29:31,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:29:31,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:29:31,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:29:31,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:29:31,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:29:31,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:29:31,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:29:31,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:29:31,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:29:31,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:29:31,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:29:31,850 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 06:29:31,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:29:31,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:29:31,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:29:31,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:29:31,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:29:31,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:29:31,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:29:31,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:29:31,884 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:29:31,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:29:31,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:29:31,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:29:31,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:29:31,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:29:31,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:29:31,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:29:31,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:29:31,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:29:31,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:29:31,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:29:31,887 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:29:31,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:29:31,888 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:29:31,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:29:31,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:29:31,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:29:31,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:29:32,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:29:32,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:29:32,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:29:32,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:29:32,119 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:29:32,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product28.cil.c [2022-01-10 06:29:32,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab3e08d0/712cfa5789d6464e8c0daeb34c43bbcf/FLAGaaf68f35f [2022-01-10 06:29:32,572 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:29:32,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product28.cil.c [2022-01-10 06:29:32,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab3e08d0/712cfa5789d6464e8c0daeb34c43bbcf/FLAGaaf68f35f [2022-01-10 06:29:32,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab3e08d0/712cfa5789d6464e8c0daeb34c43bbcf [2022-01-10 06:29:32,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:29:32,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:29:32,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:29:32,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:29:32,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:29:32,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:32" (1/1) ... [2022-01-10 06:29:32,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2d483e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:32, skipping insertion in model container [2022-01-10 06:29:32,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:32" (1/1) ... [2022-01-10 06:29:32,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:29:33,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:29:33,368 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_spec8_product28.cil.c[29342,29355] [2022-01-10 06:29:33,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:29:33,516 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:29:33,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:29:33,572 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_spec8_product28.cil.c[29342,29355] [2022-01-10 06:29:33,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:29:33,623 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:29:33,684 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_spec8_product28.cil.c[29342,29355] [2022-01-10 06:29:33,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:29:33,737 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:29:33,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33 WrapperNode [2022-01-10 06:29:33,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:29:33,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:29:33,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:29:33,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:29:33,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,833 INFO L137 Inliner]: procedures = 131, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 820 [2022-01-10 06:29:33,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:29:33,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:29:33,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:29:33,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:29:33,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:29:33,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:29:33,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:29:33,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:29:33,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (1/1) ... [2022-01-10 06:29:33,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:29:33,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:29:33,933 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 06:29:33,943 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 06:29:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:29:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:29:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:29:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:29:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:29:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:29:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:29:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:29:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:29:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:29:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:29:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:29:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:29:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:29:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:29:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:29:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:29:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:29:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:29:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:29:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:29:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:29:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:29:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:29:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:29:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:29:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:29:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:29:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:29:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:29:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:29:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:29:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:29:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:29:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:29:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:29:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:29:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:29:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:29:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:29:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:29:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:29:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:29:34,181 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:29:34,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:29:34,791 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:29:34,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:29:34,804 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:29:34,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:34 BoogieIcfgContainer [2022-01-10 06:29:34,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:29:34,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:29:34,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:29:34,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:29:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:29:32" (1/3) ... [2022-01-10 06:29:34,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677d8fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:29:34, skipping insertion in model container [2022-01-10 06:29:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:33" (2/3) ... [2022-01-10 06:29:34,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677d8fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:29:34, skipping insertion in model container [2022-01-10 06:29:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:34" (3/3) ... [2022-01-10 06:29:34,823 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product28.cil.c [2022-01-10 06:29:34,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:29:34,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:29:34,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:29:34,867 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 06:29:34,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:29:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 254 states have (on average 1.5196850393700787) internal successors, (386), 258 states have internal predecessors, (386), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-10 06:29:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 06:29:34,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:34,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:34,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1688169557, now seen corresponding path program 1 times [2022-01-10 06:29:34,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:34,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337777663] [2022-01-10 06:29:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:34,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:34,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:34,917 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 06:29:34,918 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 06:29:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:35,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:29:35,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:29:35,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:35,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:35,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337777663] [2022-01-10 06:29:35,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337777663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:35,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:35,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:29:35,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721619758] [2022-01-10 06:29:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:35,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:29:35,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:29:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:29:35,590 INFO L87 Difference]: Start difference. First operand has 328 states, 254 states have (on average 1.5196850393700787) internal successors, (386), 258 states have internal predecessors, (386), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:35,665 INFO L93 Difference]: Finished difference Result 507 states and 734 transitions. [2022-01-10 06:29:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:29:35,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-01-10 06:29:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:35,686 INFO L225 Difference]: With dead ends: 507 [2022-01-10 06:29:35,686 INFO L226 Difference]: Without dead ends: 321 [2022-01-10 06:29:35,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 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 06:29:35,696 INFO L933 BasicCegarLoop]: 482 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, 482 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 06:29:35,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-10 06:29:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-01-10 06:29:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.5120967741935485) internal successors, (375), 251 states have internal predecessors, (375), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-10 06:29:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 474 transitions. [2022-01-10 06:29:35,777 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 474 transitions. Word has length 98 [2022-01-10 06:29:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:35,779 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 474 transitions. [2022-01-10 06:29:35,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 474 transitions. [2022-01-10 06:29:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:29:35,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:35,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:35,804 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 06:29:35,999 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 06:29:36,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash 491471702, now seen corresponding path program 1 times [2022-01-10 06:29:36,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:36,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936377680] [2022-01-10 06:29:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:36,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:36,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:36,006 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 06:29:36,007 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 06:29:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:36,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:29:36,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:29:36,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:36,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:36,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936377680] [2022-01-10 06:29:36,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936377680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:36,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:36,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:36,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384690423] [2022-01-10 06:29:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:36,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:36,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:36,490 INFO L87 Difference]: Start difference. First operand 321 states and 474 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:36,576 INFO L93 Difference]: Finished difference Result 633 states and 938 transitions. [2022-01-10 06:29:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-01-10 06:29:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:36,580 INFO L225 Difference]: With dead ends: 633 [2022-01-10 06:29:36,580 INFO L226 Difference]: Without dead ends: 323 [2022-01-10 06:29:36,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 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 06:29:36,583 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 117 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1724 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 06:29:36,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1724 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-01-10 06:29:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-01-10 06:29:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 253 states have internal predecessors, (376), 50 states have call successors, (50), 22 states have call predecessors, (50), 23 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2022-01-10 06:29:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 477 transitions. [2022-01-10 06:29:36,603 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 477 transitions. Word has length 99 [2022-01-10 06:29:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:36,604 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 477 transitions. [2022-01-10 06:29:36,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 477 transitions. [2022-01-10 06:29:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 06:29:36,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:36,607 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:36,622 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 06:29:36,808 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 06:29:36,808 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash 638573449, now seen corresponding path program 1 times [2022-01-10 06:29:36,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:36,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602937103] [2022-01-10 06:29:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:36,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:36,812 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 06:29:36,814 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 06:29:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:37,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:29:37,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:29:37,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:37,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:37,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602937103] [2022-01-10 06:29:37,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602937103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:37,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:37,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:37,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822693682] [2022-01-10 06:29:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:37,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:37,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:37,247 INFO L87 Difference]: Start difference. First operand 323 states and 477 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:37,327 INFO L93 Difference]: Finished difference Result 635 states and 942 transitions. [2022-01-10 06:29:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2022-01-10 06:29:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:37,331 INFO L225 Difference]: With dead ends: 635 [2022-01-10 06:29:37,331 INFO L226 Difference]: Without dead ends: 325 [2022-01-10 06:29:37,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 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 06:29:37,334 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 116 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1713 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 06:29:37,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1713 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-10 06:29:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-01-10 06:29:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 250 states have (on average 1.508) internal successors, (377), 255 states have internal predecessors, (377), 50 states have call successors, (50), 22 states have call predecessors, (50), 24 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-01-10 06:29:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 482 transitions. [2022-01-10 06:29:37,365 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 482 transitions. Word has length 100 [2022-01-10 06:29:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:37,366 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 482 transitions. [2022-01-10 06:29:37,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 482 transitions. [2022-01-10 06:29:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:29:37,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:37,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:37,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:29:37,587 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 06:29:37,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2003442440, now seen corresponding path program 1 times [2022-01-10 06:29:37,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:37,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818219961] [2022-01-10 06:29:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:37,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:37,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:37,591 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 06:29:37,592 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 06:29:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:29:37,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:29:37,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:37,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:37,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818219961] [2022-01-10 06:29:37,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818219961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:37,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:37,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406821611] [2022-01-10 06:29:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:37,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:37,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:37,990 INFO L87 Difference]: Start difference. First operand 325 states and 482 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:38,063 INFO L93 Difference]: Finished difference Result 627 states and 932 transitions. [2022-01-10 06:29:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:38,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-01-10 06:29:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:38,065 INFO L225 Difference]: With dead ends: 627 [2022-01-10 06:29:38,065 INFO L226 Difference]: Without dead ends: 325 [2022-01-10 06:29:38,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:29:38,067 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 115 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1727 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 06:29:38,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1727 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-10 06:29:38,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-01-10 06:29:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 250 states have (on average 1.508) internal successors, (377), 255 states have internal predecessors, (377), 50 states have call successors, (50), 22 states have call predecessors, (50), 24 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2022-01-10 06:29:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 481 transitions. [2022-01-10 06:29:38,080 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 481 transitions. Word has length 101 [2022-01-10 06:29:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:38,080 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 481 transitions. [2022-01-10 06:29:38,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 481 transitions. [2022-01-10 06:29:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:29:38,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:38,082 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:38,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:29:38,295 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 06:29:38,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -612627959, now seen corresponding path program 2 times [2022-01-10 06:29:38,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:38,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039647961] [2022-01-10 06:29:38,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:29:38,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:38,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:38,298 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 06:29:38,300 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 06:29:38,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:29:38,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:29:38,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:38,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:29:38,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:38,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039647961] [2022-01-10 06:29:38,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039647961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:38,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:38,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:38,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374322944] [2022-01-10 06:29:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:38,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:38,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:38,618 INFO L87 Difference]: Start difference. First operand 325 states and 481 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:38,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:38,635 INFO L93 Difference]: Finished difference Result 501 states and 722 transitions. [2022-01-10 06:29:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:38,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-01-10 06:29:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:38,638 INFO L225 Difference]: With dead ends: 501 [2022-01-10 06:29:38,638 INFO L226 Difference]: Without dead ends: 328 [2022-01-10 06:29:38,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 06:29:38,639 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 1 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 942 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 06:29:38,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 942 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-10 06:29:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2022-01-10 06:29:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.503968253968254) internal successors, (379), 257 states have internal predecessors, (379), 50 states have call successors, (50), 22 states have call predecessors, (50), 24 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2022-01-10 06:29:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 483 transitions. [2022-01-10 06:29:38,656 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 483 transitions. Word has length 102 [2022-01-10 06:29:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:38,657 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 483 transitions. [2022-01-10 06:29:38,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 483 transitions. [2022-01-10 06:29:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 06:29:38,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:38,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:38,670 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 06:29:38,870 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 06:29:38,870 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1539842848, now seen corresponding path program 1 times [2022-01-10 06:29:38,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774707421] [2022-01-10 06:29:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:38,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:38,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:38,873 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 06:29:38,875 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 06:29:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:39,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:29:39,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:29:39,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:39,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:39,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774707421] [2022-01-10 06:29:39,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774707421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:39,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:39,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:39,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297114937] [2022-01-10 06:29:39,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:39,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:39,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:39,270 INFO L87 Difference]: Start difference. First operand 327 states and 483 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:39,328 INFO L93 Difference]: Finished difference Result 633 states and 939 transitions. [2022-01-10 06:29:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:39,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-01-10 06:29:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:39,331 INFO L225 Difference]: With dead ends: 633 [2022-01-10 06:29:39,331 INFO L226 Difference]: Without dead ends: 329 [2022-01-10 06:29:39,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 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 06:29:39,332 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 113 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1729 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 06:29:39,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1729 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-10 06:29:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-01-10 06:29:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 253 states have (on average 1.5019762845849802) internal successors, (380), 259 states have internal predecessors, (380), 50 states have call successors, (50), 22 states have call predecessors, (50), 25 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2022-01-10 06:29:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 486 transitions. [2022-01-10 06:29:39,344 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 486 transitions. Word has length 108 [2022-01-10 06:29:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:39,345 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 486 transitions. [2022-01-10 06:29:39,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 486 transitions. [2022-01-10 06:29:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 06:29:39,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:39,347 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:39,363 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 06:29:39,560 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 06:29:39,560 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1858984948, now seen corresponding path program 1 times [2022-01-10 06:29:39,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:39,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757836468] [2022-01-10 06:29:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:39,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:39,563 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 06:29:39,565 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 06:29:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:39,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:29:39,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:29:39,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:39,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757836468] [2022-01-10 06:29:39,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757836468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:39,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:39,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:39,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318287478] [2022-01-10 06:29:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:39,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:39,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:39,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:39,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:39,951 INFO L87 Difference]: Start difference. First operand 329 states and 486 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:40,008 INFO L93 Difference]: Finished difference Result 631 states and 934 transitions. [2022-01-10 06:29:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-01-10 06:29:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:40,010 INFO L225 Difference]: With dead ends: 631 [2022-01-10 06:29:40,010 INFO L226 Difference]: Without dead ends: 329 [2022-01-10 06:29:40,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 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 06:29:40,033 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 114 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1716 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 06:29:40,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1716 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-10 06:29:40,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-01-10 06:29:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 253 states have (on average 1.5019762845849802) internal successors, (380), 259 states have internal predecessors, (380), 50 states have call successors, (50), 22 states have call predecessors, (50), 25 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-01-10 06:29:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 485 transitions. [2022-01-10 06:29:40,048 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 485 transitions. Word has length 109 [2022-01-10 06:29:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:40,048 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 485 transitions. [2022-01-10 06:29:40,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 485 transitions. [2022-01-10 06:29:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:29:40,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:40,050 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:40,066 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 06:29:40,263 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 06:29:40,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1609258471, now seen corresponding path program 2 times [2022-01-10 06:29:40,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:40,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918014073] [2022-01-10 06:29:40,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:29:40,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:40,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:40,267 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 06:29:40,269 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 06:29:40,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:29:40,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:29:40,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:29:40,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:29:40,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:40,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918014073] [2022-01-10 06:29:40,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918014073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:40,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:40,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:29:40,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595532260] [2022-01-10 06:29:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:40,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:29:40,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:29:40,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:29:40,707 INFO L87 Difference]: Start difference. First operand 329 states and 485 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:40,785 INFO L93 Difference]: Finished difference Result 633 states and 939 transitions. [2022-01-10 06:29:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:29:40,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-01-10 06:29:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:40,788 INFO L225 Difference]: With dead ends: 633 [2022-01-10 06:29:40,788 INFO L226 Difference]: Without dead ends: 331 [2022-01-10 06:29:40,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:29:40,790 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 112 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:29:40,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1718 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:29:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-01-10 06:29:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-01-10 06:29:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 254 states have (on average 1.5) internal successors, (381), 261 states have internal predecessors, (381), 50 states have call successors, (50), 22 states have call predecessors, (50), 26 states have return successors, (59), 49 states have call predecessors, (59), 49 states have call successors, (59) [2022-01-10 06:29:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 490 transitions. [2022-01-10 06:29:40,802 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 490 transitions. Word has length 110 [2022-01-10 06:29:40,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:40,802 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 490 transitions. [2022-01-10 06:29:40,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:29:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 490 transitions. [2022-01-10 06:29:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:29:40,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:40,804 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:40,818 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 06:29:41,019 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 06:29:41,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:41,020 INFO L85 PathProgramCache]: Analyzing trace with hash -496039079, now seen corresponding path program 1 times [2022-01-10 06:29:41,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:41,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958618062] [2022-01-10 06:29:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:41,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:41,022 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 06:29:41,023 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 06:29:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:41,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:41,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:41,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:41,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:41,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958618062] [2022-01-10 06:29:41,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958618062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:41,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:41,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:41,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596402363] [2022-01-10 06:29:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:41,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:41,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:41,406 INFO L87 Difference]: Start difference. First operand 331 states and 490 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:41,438 INFO L93 Difference]: Finished difference Result 683 states and 1025 transitions. [2022-01-10 06:29:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:41,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-01-10 06:29:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:41,442 INFO L225 Difference]: With dead ends: 683 [2022-01-10 06:29:41,442 INFO L226 Difference]: Without dead ends: 383 [2022-01-10 06:29:41,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 06:29:41,444 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 99 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 917 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 06:29:41,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 917 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-10 06:29:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2022-01-10 06:29:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 287 states have (on average 1.5156794425087108) internal successors, (435), 294 states have internal predecessors, (435), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2022-01-10 06:29:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 568 transitions. [2022-01-10 06:29:41,460 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 568 transitions. Word has length 111 [2022-01-10 06:29:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:41,461 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 568 transitions. [2022-01-10 06:29:41,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 568 transitions. [2022-01-10 06:29:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:29:41,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:41,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:41,479 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 06:29:41,676 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 06:29:41,677 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1877256588, now seen corresponding path program 1 times [2022-01-10 06:29:41,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:41,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358046439] [2022-01-10 06:29:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:41,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:41,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:41,691 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 06:29:41,710 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 06:29:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:41,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:29:41,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:42,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:29:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:42,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:42,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358046439] [2022-01-10 06:29:42,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358046439] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:29:42,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:29:42,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:29:42,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291951315] [2022-01-10 06:29:42,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:29:42,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:29:42,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:29:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:29:42,298 INFO L87 Difference]: Start difference. First operand 375 states and 568 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:29:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:42,560 INFO L93 Difference]: Finished difference Result 875 states and 1374 transitions. [2022-01-10 06:29:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:29:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-01-10 06:29:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:42,567 INFO L225 Difference]: With dead ends: 875 [2022-01-10 06:29:42,568 INFO L226 Difference]: Without dead ends: 702 [2022-01-10 06:29:42,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 218 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 06:29:42,569 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 434 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:29:42,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1722 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:29:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-01-10 06:29:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 678. [2022-01-10 06:29:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 526 states have (on average 1.5836501901140685) internal successors, (833), 533 states have internal predecessors, (833), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2022-01-10 06:29:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1104 transitions. [2022-01-10 06:29:42,605 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1104 transitions. Word has length 112 [2022-01-10 06:29:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:42,606 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1104 transitions. [2022-01-10 06:29:42,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:29:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1104 transitions. [2022-01-10 06:29:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:29:42,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:42,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:42,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:29:42,822 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 06:29:42,822 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1908706807, now seen corresponding path program 1 times [2022-01-10 06:29:42,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:42,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908598827] [2022-01-10 06:29:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:42,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:42,825 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 06:29:42,826 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 06:29:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:43,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:43,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:43,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:43,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908598827] [2022-01-10 06:29:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908598827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:43,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:43,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:43,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941813229] [2022-01-10 06:29:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:43,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:43,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:43,173 INFO L87 Difference]: Start difference. First operand 678 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:43,220 INFO L93 Difference]: Finished difference Result 1596 states and 2640 transitions. [2022-01-10 06:29:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:43,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-01-10 06:29:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:43,225 INFO L225 Difference]: With dead ends: 1596 [2022-01-10 06:29:43,226 INFO L226 Difference]: Without dead ends: 986 [2022-01-10 06:29:43,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 06:29:43,228 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 97 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 965 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 06:29:43,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 965 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-01-10 06:29:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 978. [2022-01-10 06:29:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 762 states have (on average 1.5984251968503937) internal successors, (1218), 769 states have internal predecessors, (1218), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2022-01-10 06:29:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1627 transitions. [2022-01-10 06:29:43,276 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1627 transitions. Word has length 118 [2022-01-10 06:29:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:43,276 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1627 transitions. [2022-01-10 06:29:43,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1627 transitions. [2022-01-10 06:29:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 06:29:43,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:43,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:43,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:29:43,493 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 06:29:43,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash 315871257, now seen corresponding path program 1 times [2022-01-10 06:29:43,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:43,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187796973] [2022-01-10 06:29:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:43,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:43,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:43,497 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 06:29:43,498 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 06:29:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:43,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:43,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:43,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:43,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:43,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187796973] [2022-01-10 06:29:43,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187796973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:43,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:43,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:43,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136898698] [2022-01-10 06:29:43,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:43,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:43,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:43,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:43,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:43,854 INFO L87 Difference]: Start difference. First operand 978 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:43,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:43,944 INFO L93 Difference]: Finished difference Result 2311 states and 3869 transitions. [2022-01-10 06:29:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:43,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-01-10 06:29:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:43,952 INFO L225 Difference]: With dead ends: 2311 [2022-01-10 06:29:43,952 INFO L226 Difference]: Without dead ends: 1454 [2022-01-10 06:29:43,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:43,956 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 95 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 954 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 06:29:43,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-01-10 06:29:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1446. [2022-01-10 06:29:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1135 states have (on average 1.6079295154185023) internal successors, (1825), 1142 states have internal predecessors, (1825), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2022-01-10 06:29:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2424 transitions. [2022-01-10 06:29:44,023 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2424 transitions. Word has length 119 [2022-01-10 06:29:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:44,023 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 2424 transitions. [2022-01-10 06:29:44,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:44,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2424 transitions. [2022-01-10 06:29:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 06:29:44,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:44,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:44,043 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 06:29:44,243 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 06:29:44,243 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1683939179, now seen corresponding path program 1 times [2022-01-10 06:29:44,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:44,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943145742] [2022-01-10 06:29:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:44,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:44,245 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 06:29:44,246 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 06:29:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:44,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:44,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:44,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:44,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943145742] [2022-01-10 06:29:44,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943145742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:44,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:44,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:44,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069095202] [2022-01-10 06:29:44,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:44,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:44,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:44,563 INFO L87 Difference]: Start difference. First operand 1446 states and 2424 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:44,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:44,647 INFO L93 Difference]: Finished difference Result 3358 states and 5676 transitions. [2022-01-10 06:29:44,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:44,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-01-10 06:29:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:44,659 INFO L225 Difference]: With dead ends: 3358 [2022-01-10 06:29:44,659 INFO L226 Difference]: Without dead ends: 2158 [2022-01-10 06:29:44,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:44,664 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 93 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 949 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 06:29:44,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 949 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-01-10 06:29:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2150. [2022-01-10 06:29:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1716 states have (on average 1.6153846153846154) internal successors, (2772), 1723 states have internal predecessors, (2772), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2022-01-10 06:29:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3633 transitions. [2022-01-10 06:29:44,808 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3633 transitions. Word has length 120 [2022-01-10 06:29:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:44,808 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3633 transitions. [2022-01-10 06:29:44,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3633 transitions. [2022-01-10 06:29:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:29:44,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:44,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:44,831 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 06:29:45,031 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 06:29:45,031 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2032510696, now seen corresponding path program 1 times [2022-01-10 06:29:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74512739] [2022-01-10 06:29:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:45,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:45,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:45,034 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 06:29:45,034 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 06:29:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:45,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:45,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:45,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:45,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:45,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74512739] [2022-01-10 06:29:45,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74512739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:45,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:45,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:45,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38132074] [2022-01-10 06:29:45,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:45,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:45,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:45,360 INFO L87 Difference]: Start difference. First operand 2150 states and 3633 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:45,475 INFO L93 Difference]: Finished difference Result 4977 states and 8473 transitions. [2022-01-10 06:29:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:45,475 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-01-10 06:29:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:45,491 INFO L225 Difference]: With dead ends: 4977 [2022-01-10 06:29:45,492 INFO L226 Difference]: Without dead ends: 3277 [2022-01-10 06:29:45,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:45,499 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 91 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 949 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 06:29:45,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 949 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-01-10 06:29:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3269. [2022-01-10 06:29:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2656 states have (on average 1.620105421686747) internal successors, (4303), 2663 states have internal predecessors, (4303), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2022-01-10 06:29:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 5548 transitions. [2022-01-10 06:29:45,708 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 5548 transitions. Word has length 121 [2022-01-10 06:29:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:45,708 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 5548 transitions. [2022-01-10 06:29:45,708 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 5548 transitions. [2022-01-10 06:29:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:29:45,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:45,719 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:45,732 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 06:29:45,932 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 06:29:45,932 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 854956121, now seen corresponding path program 1 times [2022-01-10 06:29:45,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878162896] [2022-01-10 06:29:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:45,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:45,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:45,935 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 06:29:45,936 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 06:29:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:46,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:46,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:46,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:46,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:46,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878162896] [2022-01-10 06:29:46,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878162896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:46,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:46,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:46,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011268813] [2022-01-10 06:29:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:46,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:46,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:46,281 INFO L87 Difference]: Start difference. First operand 3269 states and 5548 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:46,474 INFO L93 Difference]: Finished difference Result 7895 states and 13472 transitions. [2022-01-10 06:29:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-01-10 06:29:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:46,503 INFO L225 Difference]: With dead ends: 7895 [2022-01-10 06:29:46,504 INFO L226 Difference]: Without dead ends: 5308 [2022-01-10 06:29:46,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:46,518 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 89 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 966 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 06:29:46,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 966 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2022-01-10 06:29:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5300. [2022-01-10 06:29:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 4311 states have (on average 1.6133147761540245) internal successors, (6955), 4318 states have internal predecessors, (6955), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2022-01-10 06:29:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 8996 transitions. [2022-01-10 06:29:46,865 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 8996 transitions. Word has length 122 [2022-01-10 06:29:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:46,865 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 8996 transitions. [2022-01-10 06:29:46,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 8996 transitions. [2022-01-10 06:29:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:29:46,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:46,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:46,895 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 06:29:47,095 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 06:29:47,095 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash 752377172, now seen corresponding path program 1 times [2022-01-10 06:29:47,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:47,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089755890] [2022-01-10 06:29:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:47,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:47,098 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 06:29:47,100 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 06:29:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:47,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:47,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:47,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:47,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089755890] [2022-01-10 06:29:47,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089755890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:47,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:47,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:47,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172653482] [2022-01-10 06:29:47,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:47,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:47,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:47,429 INFO L87 Difference]: Start difference. First operand 5300 states and 8996 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:47,766 INFO L93 Difference]: Finished difference Result 13037 states and 22270 transitions. [2022-01-10 06:29:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:47,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-01-10 06:29:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:47,828 INFO L225 Difference]: With dead ends: 13037 [2022-01-10 06:29:47,828 INFO L226 Difference]: Without dead ends: 8796 [2022-01-10 06:29:47,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:47,846 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 87 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 954 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 06:29:47,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2022-01-10 06:29:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8788. [2022-01-10 06:29:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8788 states, 7193 states have (on average 1.6111497289031003) internal successors, (11589), 7200 states have internal predecessors, (11589), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2022-01-10 06:29:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8788 states to 8788 states and 14920 transitions. [2022-01-10 06:29:48,368 INFO L78 Accepts]: Start accepts. Automaton has 8788 states and 14920 transitions. Word has length 123 [2022-01-10 06:29:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:48,369 INFO L470 AbstractCegarLoop]: Abstraction has 8788 states and 14920 transitions. [2022-01-10 06:29:48,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 8788 states and 14920 transitions. [2022-01-10 06:29:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:29:48,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:48,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:48,406 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 06:29:48,604 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 06:29:48,604 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 989095191, now seen corresponding path program 1 times [2022-01-10 06:29:48,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:48,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613711177] [2022-01-10 06:29:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:48,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:48,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:48,607 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 06:29:48,610 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 06:29:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:48,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:48,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:48,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:48,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613711177] [2022-01-10 06:29:48,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613711177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:48,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:48,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:48,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464465168] [2022-01-10 06:29:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:48,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:48,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:48,957 INFO L87 Difference]: Start difference. First operand 8788 states and 14920 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:49,491 INFO L93 Difference]: Finished difference Result 22696 states and 38695 transitions. [2022-01-10 06:29:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:49,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-01-10 06:29:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:49,554 INFO L225 Difference]: With dead ends: 22696 [2022-01-10 06:29:49,554 INFO L226 Difference]: Without dead ends: 15389 [2022-01-10 06:29:49,587 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 06:29:49,588 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 85 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 964 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 06:29:49,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 964 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15389 states. [2022-01-10 06:29:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15389 to 15381. [2022-01-10 06:29:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 12583 states have (on average 1.6017642851466265) internal successors, (20155), 12590 states have internal predecessors, (20155), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2022-01-10 06:29:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 26036 transitions. [2022-01-10 06:29:50,434 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 26036 transitions. Word has length 124 [2022-01-10 06:29:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:50,435 INFO L470 AbstractCegarLoop]: Abstraction has 15381 states and 26036 transitions. [2022-01-10 06:29:50,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 26036 transitions. [2022-01-10 06:29:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:29:50,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:50,473 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:50,489 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 06:29:50,687 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 06:29:50,687 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 11822771, now seen corresponding path program 1 times [2022-01-10 06:29:50,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:50,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910613269] [2022-01-10 06:29:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:50,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:50,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:50,690 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 06:29:50,692 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 06:29:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:50,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:50,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:51,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:51,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:51,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910613269] [2022-01-10 06:29:51,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910613269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:51,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:51,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:51,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901688008] [2022-01-10 06:29:51,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:51,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:51,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:51,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:51,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:51,022 INFO L87 Difference]: Start difference. First operand 15381 states and 26036 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:51,894 INFO L93 Difference]: Finished difference Result 40652 states and 69138 transitions. [2022-01-10 06:29:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-01-10 06:29:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:52,010 INFO L225 Difference]: With dead ends: 40652 [2022-01-10 06:29:52,011 INFO L226 Difference]: Without dead ends: 27359 [2022-01-10 06:29:52,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:52,057 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 83 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 954 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 06:29:52,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27359 states. [2022-01-10 06:29:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27359 to 27351. [2022-01-10 06:29:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27351 states, 22514 states have (on average 1.5973616416451986) internal successors, (35963), 22521 states have internal predecessors, (35963), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2022-01-10 06:29:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 46196 transitions. [2022-01-10 06:29:53,632 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 46196 transitions. Word has length 125 [2022-01-10 06:29:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:53,632 INFO L470 AbstractCegarLoop]: Abstraction has 27351 states and 46196 transitions. [2022-01-10 06:29:53,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 46196 transitions. [2022-01-10 06:29:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:29:53,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:53,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:53,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:29:53,881 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 06:29:53,882 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -496859787, now seen corresponding path program 1 times [2022-01-10 06:29:53,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:53,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699766854] [2022-01-10 06:29:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:53,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:53,885 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 06:29:53,889 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 06:29:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:54,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:54,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:54,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699766854] [2022-01-10 06:29:54,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699766854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:54,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:54,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:54,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203483140] [2022-01-10 06:29:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:54,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:54,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:54,484 INFO L87 Difference]: Start difference. First operand 27351 states and 46196 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:29:55,905 INFO L93 Difference]: Finished difference Result 74439 states and 126205 transitions. [2022-01-10 06:29:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:29:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2022-01-10 06:29:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:29:56,150 INFO L225 Difference]: With dead ends: 74439 [2022-01-10 06:29:56,151 INFO L226 Difference]: Without dead ends: 49908 [2022-01-10 06:29:56,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:56,251 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 81 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 955 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 06:29:56,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 955 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:29:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49908 states. [2022-01-10 06:29:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49908 to 49900. [2022-01-10 06:29:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49900 states, 41348 states have (on average 1.5914675437747896) internal successors, (65804), 41355 states have internal predecessors, (65804), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2022-01-10 06:29:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49900 states to 49900 states and 83999 transitions. [2022-01-10 06:29:58,961 INFO L78 Accepts]: Start accepts. Automaton has 49900 states and 83999 transitions. Word has length 126 [2022-01-10 06:29:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:29:58,961 INFO L470 AbstractCegarLoop]: Abstraction has 49900 states and 83999 transitions. [2022-01-10 06:29:58,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:29:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 49900 states and 83999 transitions. [2022-01-10 06:29:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:29:58,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:29:58,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:29:59,014 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 06:29:59,214 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 06:29:59,215 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:29:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:29:59,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1155240813, now seen corresponding path program 1 times [2022-01-10 06:29:59,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:29:59,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834068854] [2022-01-10 06:29:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:29:59,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:29:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:29:59,218 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 06:29:59,223 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 06:29:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:29:59,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:29:59,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:29:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:29:59,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:29:59,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:29:59,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834068854] [2022-01-10 06:29:59,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834068854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:29:59,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:29:59,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:29:59,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234460782] [2022-01-10 06:29:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:29:59,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:29:59,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:29:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:29:59,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:29:59,606 INFO L87 Difference]: Start difference. First operand 49900 states and 83999 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:30:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:30:02,150 INFO L93 Difference]: Finished difference Result 92925 states and 156767 transitions. [2022-01-10 06:30:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:30:02,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2022-01-10 06:30:02,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:30:02,759 INFO L225 Difference]: With dead ends: 92925 [2022-01-10 06:30:02,759 INFO L226 Difference]: Without dead ends: 92752 [2022-01-10 06:30:02,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:30:02,815 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 79 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 954 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 06:30:02,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:30:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92752 states. [2022-01-10 06:30:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92752 to 92744. [2022-01-10 06:30:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92744 states, 77393 states have (on average 1.5839933844146112) internal successors, (122590), 77400 states have internal predecessors, (122590), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2022-01-10 06:30:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92744 states to 92744 states and 155429 transitions. [2022-01-10 06:30:07,091 INFO L78 Accepts]: Start accepts. Automaton has 92744 states and 155429 transitions. Word has length 127 [2022-01-10 06:30:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:30:07,091 INFO L470 AbstractCegarLoop]: Abstraction has 92744 states and 155429 transitions. [2022-01-10 06:30:07,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:30:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 92744 states and 155429 transitions. [2022-01-10 06:30:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:30:07,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:30:07,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:30:07,151 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 06:30:07,348 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 06:30:07,348 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:30:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:30:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 612044950, now seen corresponding path program 1 times [2022-01-10 06:30:07,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:30:07,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535878960] [2022-01-10 06:30:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:30:07,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:30:07,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:30:07,351 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 06:30:07,353 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 06:30:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:30:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:30:07,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:30:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:30:07,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:30:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:30:08,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:30:08,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535878960] [2022-01-10 06:30:08,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535878960] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:30:08,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:30:08,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:30:08,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668114493] [2022-01-10 06:30:08,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:30:08,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:30:08,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:30:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:30:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:30:08,292 INFO L87 Difference]: Start difference. First operand 92744 states and 155429 transitions. Second operand has 16 states, 16 states have (on average 10.3125) internal successors, (165), 14 states have internal predecessors, (165), 4 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2022-01-10 06:30:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:30:20,012 INFO L93 Difference]: Finished difference Result 273018 states and 464153 transitions. [2022-01-10 06:30:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:30:20,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.3125) internal successors, (165), 14 states have internal predecessors, (165), 4 states have call successors, (26), 6 states have call predecessors, (26), 9 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) Word has length 128 [2022-01-10 06:30:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:30:21,742 INFO L225 Difference]: With dead ends: 273018 [2022-01-10 06:30:21,743 INFO L226 Difference]: Without dead ends: 272853 [2022-01-10 06:30:21,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2022-01-10 06:30:21,870 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1347 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 5595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:30:21,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 2847 Invalid, 5595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 06:30:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272853 states.