./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec3_product29.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a59be100f0df5b45ec217b714193edff4cbaee7a030bd6a056d7c0737b59e84e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:57:13,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:57:13,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:57:13,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:57:13,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:57:13,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:57:13,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:57:13,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:57:13,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:57:13,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:57:13,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:57:13,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:57:13,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:57:13,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:57:13,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:57:13,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:57:13,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:57:13,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:57:13,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:57:13,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:57:13,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:57:13,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:57:13,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:57:13,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:57:13,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:57:13,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:57:13,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:57:13,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:57:13,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:57:13,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:57:13,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:57:13,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:57:13,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:57:13,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:57:13,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:57:13,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:57:13,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:57:13,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:57:13,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:57:13,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:57:13,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:57:13,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:57:13,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:57:13,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:57:13,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:57:13,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:57:13,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:57:13,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:57:13,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:57:13,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:57:13,699 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:57:13,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:57:13,700 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:57:13,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:57:13,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:57:13,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:57:13,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:57:13,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:57:13,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:57:13,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:57:13,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:57:13,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:57:13,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:57:13,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:57:13,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:57:13,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:57:13,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:57:13,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:57:13,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:57:13,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:57:13,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:57:13,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:57:13,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:57:13,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:57:13,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:57:13,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:57:13,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a59be100f0df5b45ec217b714193edff4cbaee7a030bd6a056d7c0737b59e84e [2021-12-17 14:57:13,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:57:13,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:57:13,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:57:13,973 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:57:13,974 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:57:13,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product29.cil.c [2021-12-17 14:57:14,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac8e7fd1/6800e8b35d9e4a37a36c59e63c8978fe/FLAG0b20d92cf [2021-12-17 14:57:14,528 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:57:14,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product29.cil.c [2021-12-17 14:57:14,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac8e7fd1/6800e8b35d9e4a37a36c59e63c8978fe/FLAG0b20d92cf [2021-12-17 14:57:14,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac8e7fd1/6800e8b35d9e4a37a36c59e63c8978fe [2021-12-17 14:57:14,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:57:14,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:57:14,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:57:14,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:57:14,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:57:14,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:57:14" (1/1) ... [2021-12-17 14:57:14,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d393464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:14, skipping insertion in model container [2021-12-17 14:57:14,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:57:14" (1/1) ... [2021-12-17 14:57:14,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:57:14,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:57:15,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product29.cil.c[49640,49653] [2021-12-17 14:57:15,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:57:15,300 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:57:15,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product29.cil.c[49640,49653] [2021-12-17 14:57:15,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:57:15,423 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:57:15,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15 WrapperNode [2021-12-17 14:57:15,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:57:15,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:57:15,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:57:15,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:57:15,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,559 INFO L137 Inliner]: procedures = 132, calls = 236, calls flagged for inlining = 55, calls inlined = 47, statements flattened = 955 [2021-12-17 14:57:15,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:57:15,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:57:15,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:57:15,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:57:15,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:57:15,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:57:15,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:57:15,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:57:15,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (1/1) ... [2021-12-17 14:57:15,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:57:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:15,692 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) [2021-12-17 14:57:15,711 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 [2021-12-17 14:57:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-17 14:57:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-17 14:57:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-17 14:57:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-17 14:57:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-17 14:57:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-17 14:57:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-17 14:57:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-17 14:57:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-17 14:57:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-17 14:57:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-17 14:57:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-17 14:57:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-17 14:57:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-17 14:57:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-17 14:57:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-17 14:57:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-17 14:57:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-17 14:57:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-17 14:57:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-17 14:57:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-17 14:57:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-17 14:57:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-17 14:57:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-17 14:57:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-17 14:57:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-17 14:57:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-17 14:57:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-17 14:57:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-17 14:57:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:57:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-17 14:57:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-17 14:57:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-17 14:57:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-17 14:57:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-17 14:57:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-17 14:57:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-17 14:57:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-17 14:57:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:57:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:57:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-17 14:57:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-17 14:57:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-17 14:57:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-17 14:57:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-12-17 14:57:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-12-17 14:57:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-17 14:57:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-17 14:57:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-17 14:57:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-17 14:57:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-17 14:57:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-17 14:57:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-17 14:57:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-17 14:57:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-17 14:57:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-17 14:57:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:57:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-17 14:57:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-17 14:57:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-17 14:57:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-17 14:57:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:57:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:57:15,940 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:57:15,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:57:16,593 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:57:16,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:57:16,608 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:57:16,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:57:16 BoogieIcfgContainer [2021-12-17 14:57:16,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:57:16,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:57:16,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:57:16,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:57:16,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:57:14" (1/3) ... [2021-12-17 14:57:16,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f26198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:57:16, skipping insertion in model container [2021-12-17 14:57:16,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:57:15" (2/3) ... [2021-12-17 14:57:16,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f26198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:57:16, skipping insertion in model container [2021-12-17 14:57:16,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:57:16" (3/3) ... [2021-12-17 14:57:16,621 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product29.cil.c [2021-12-17 14:57:16,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:57:16,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:57:16,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:57:16,679 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 [2021-12-17 14:57:16,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:57:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 419 states, 320 states have (on average 1.55) internal successors, (496), 327 states have internal predecessors, (496), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-17 14:57:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-17 14:57:16,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:16,720 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:16,720 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1911849213, now seen corresponding path program 1 times [2021-12-17 14:57:16,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:16,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712837813] [2021-12-17 14:57:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:16,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:57:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:57:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:57:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:57:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 14:57:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:57:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:57:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:57:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:57:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:57:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:57:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:57:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:57:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:57:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:57:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-17 14:57:17,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:17,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712837813] [2021-12-17 14:57:17,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712837813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:57:17,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103312533] [2021-12-17 14:57:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:17,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:17,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:57:17,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:57:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:17,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 14:57:17,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:57:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-17 14:57:17,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:57:17,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103312533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:17,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:57:17,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-17 14:57:17,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783219340] [2021-12-17 14:57:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:17,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 14:57:17,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 14:57:17,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:57:17,908 INFO L87 Difference]: Start difference. First operand has 419 states, 320 states have (on average 1.55) internal successors, (496), 327 states have internal predecessors, (496), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:17,977 INFO L93 Difference]: Finished difference Result 649 states and 962 transitions. [2021-12-17 14:57:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 14:57:17,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2021-12-17 14:57:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:17,991 INFO L225 Difference]: With dead ends: 649 [2021-12-17 14:57:17,996 INFO L226 Difference]: Without dead ends: 411 [2021-12-17 14:57:18,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:57:18,007 INFO L933 BasicCegarLoop]: 626 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, 626 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 [2021-12-17 14:57:18,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:57:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-12-17 14:57:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2021-12-17 14:57:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 314 states have (on average 1.5445859872611465) internal successors, (485), 319 states have internal predecessors, (485), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-17 14:57:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 618 transitions. [2021-12-17 14:57:18,090 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 618 transitions. Word has length 139 [2021-12-17 14:57:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:18,091 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 618 transitions. [2021-12-17 14:57:18,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 618 transitions. [2021-12-17 14:57:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-17 14:57:18,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:18,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:18,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 14:57:18,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-17 14:57:18,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash -651445051, now seen corresponding path program 1 times [2021-12-17 14:57:18,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:18,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124549745] [2021-12-17 14:57:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:18,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:57:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:57:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:57:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:57:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:57:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:57:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:57:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:57:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:57:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:57:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:57:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:57:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:57:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 14:57:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:57:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:57:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:57:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:57:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-17 14:57:18,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:18,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124549745] [2021-12-17 14:57:18,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124549745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:57:18,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375136519] [2021-12-17 14:57:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:18,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:18,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:18,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:57:18,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:57:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:18,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:57:18,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:57:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-17 14:57:19,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:57:19,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375136519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:19,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:57:19,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:57:19,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967688476] [2021-12-17 14:57:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:19,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:57:19,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:57:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:57:19,166 INFO L87 Difference]: Start difference. First operand 411 states and 618 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:19,197 INFO L93 Difference]: Finished difference Result 638 states and 936 transitions. [2021-12-17 14:57:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:57:19,198 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2021-12-17 14:57:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:19,203 INFO L225 Difference]: With dead ends: 638 [2021-12-17 14:57:19,203 INFO L226 Difference]: Without dead ends: 414 [2021-12-17 14:57:19,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:57:19,206 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1230 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 [2021-12-17 14:57:19,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1230 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:57:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-12-17 14:57:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 413. [2021-12-17 14:57:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 316 states have (on average 1.5411392405063291) internal successors, (487), 321 states have internal predecessors, (487), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-17 14:57:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 620 transitions. [2021-12-17 14:57:19,234 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 620 transitions. Word has length 159 [2021-12-17 14:57:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:19,235 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 620 transitions. [2021-12-17 14:57:19,235 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 620 transitions. [2021-12-17 14:57:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-17 14:57:19,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:19,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:19,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 14:57:19,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-17 14:57:19,440 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash -586352228, now seen corresponding path program 1 times [2021-12-17 14:57:19,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:19,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189825445] [2021-12-17 14:57:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:19,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:57:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:57:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:57:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:57:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:57:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:57:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:57:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:57:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:57:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:57:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:57:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:57:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 14:57:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:57:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:57:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-17 14:57:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:57:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-17 14:57:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-17 14:57:19,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:19,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189825445] [2021-12-17 14:57:19,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189825445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:57:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584575816] [2021-12-17 14:57:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:19,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:19,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:57:19,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:57:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:19,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:57:19,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:57:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-17 14:57:20,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:57:20,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584575816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:20,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:57:20,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 14:57:20,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669446676] [2021-12-17 14:57:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:20,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:57:20,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:20,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:57:20,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:57:20,202 INFO L87 Difference]: Start difference. First operand 413 states and 620 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:20,231 INFO L93 Difference]: Finished difference Result 869 states and 1324 transitions. [2021-12-17 14:57:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:57:20,232 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 165 [2021-12-17 14:57:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:20,235 INFO L225 Difference]: With dead ends: 869 [2021-12-17 14:57:20,235 INFO L226 Difference]: Without dead ends: 483 [2021-12-17 14:57:20,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:57:20,237 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 126 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1213 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 [2021-12-17 14:57:20,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1213 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:57:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-17 14:57:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 475. [2021-12-17 14:57:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 364 states have (on average 1.5604395604395604) internal successors, (568), 369 states have internal predecessors, (568), 82 states have call successors, (82), 29 states have call predecessors, (82), 28 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2021-12-17 14:57:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 729 transitions. [2021-12-17 14:57:20,267 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 729 transitions. Word has length 165 [2021-12-17 14:57:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:20,268 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 729 transitions. [2021-12-17 14:57:20,268 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 729 transitions. [2021-12-17 14:57:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-17 14:57:20,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:20,272 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:20,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 14:57:20,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:20,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2043024202, now seen corresponding path program 1 times [2021-12-17 14:57:20,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:20,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607948400] [2021-12-17 14:57:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:20,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:57:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:57:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:57:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:57:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:57:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:57:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:57:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:57:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:57:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:57:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:57:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:57:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:57:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:57:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:57:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:57:20,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607948400] [2021-12-17 14:57:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607948400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:57:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492144193] [2021-12-17 14:57:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:20,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:20,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:20,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:57:20,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 14:57:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:20,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:57:20,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:57:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:57:21,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:57:21,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492144193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:21,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:57:21,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-17 14:57:21,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534787049] [2021-12-17 14:57:21,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:21,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:57:21,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:57:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:57:21,301 INFO L87 Difference]: Start difference. First operand 475 states and 729 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:57:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:21,381 INFO L93 Difference]: Finished difference Result 941 states and 1448 transitions. [2021-12-17 14:57:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:57:21,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2021-12-17 14:57:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:21,385 INFO L225 Difference]: With dead ends: 941 [2021-12-17 14:57:21,385 INFO L226 Difference]: Without dead ends: 477 [2021-12-17 14:57:21,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:21,388 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 144 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2270 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 [2021-12-17 14:57:21,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2270 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:57:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-17 14:57:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2021-12-17 14:57:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 365 states have (on average 1.558904109589041) internal successors, (569), 371 states have internal predecessors, (569), 82 states have call successors, (82), 29 states have call predecessors, (82), 29 states have return successors, (81), 78 states have call predecessors, (81), 79 states have call successors, (81) [2021-12-17 14:57:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 732 transitions. [2021-12-17 14:57:21,410 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 732 transitions. Word has length 147 [2021-12-17 14:57:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:21,410 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 732 transitions. [2021-12-17 14:57:21,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:57:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 732 transitions. [2021-12-17 14:57:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-17 14:57:21,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:21,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:21,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-17 14:57:21,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:21,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:21,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash -422635698, now seen corresponding path program 1 times [2021-12-17 14:57:21,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:21,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382187327] [2021-12-17 14:57:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:21,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:57:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:57:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:57:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:57:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:57:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:57:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:57:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:57:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:57:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:57:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:57:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:57:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 14:57:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:57:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:57:21,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:21,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382187327] [2021-12-17 14:57:21,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382187327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:57:21,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5668782] [2021-12-17 14:57:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:21,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:21,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:21,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:57:21,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 14:57:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:57:22,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:57:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:57:22,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:57:22,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5668782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:22,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:57:22,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-17 14:57:22,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615820832] [2021-12-17 14:57:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:22,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:57:22,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:57:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:57:22,316 INFO L87 Difference]: Start difference. First operand 477 states and 732 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:57:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:22,402 INFO L93 Difference]: Finished difference Result 943 states and 1453 transitions. [2021-12-17 14:57:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:57:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2021-12-17 14:57:22,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:22,406 INFO L225 Difference]: With dead ends: 943 [2021-12-17 14:57:22,406 INFO L226 Difference]: Without dead ends: 479 [2021-12-17 14:57:22,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:57:22,408 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 143 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2259 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 [2021-12-17 14:57:22,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2259 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:57:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-17 14:57:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2021-12-17 14:57:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 366 states have (on average 1.5573770491803278) internal successors, (570), 373 states have internal predecessors, (570), 82 states have call successors, (82), 29 states have call predecessors, (82), 30 states have return successors, (86), 78 states have call predecessors, (86), 79 states have call successors, (86) [2021-12-17 14:57:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 738 transitions. [2021-12-17 14:57:22,427 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 738 transitions. Word has length 148 [2021-12-17 14:57:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:22,428 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 738 transitions. [2021-12-17 14:57:22,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:57:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 738 transitions. [2021-12-17 14:57:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-17 14:57:22,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:22,431 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:22,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 14:57:22,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:22,651 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1115232386, now seen corresponding path program 1 times [2021-12-17 14:57:22,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115457810] [2021-12-17 14:57:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:22,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:57:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:57:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 14:57:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:57:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:57:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:57:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:57:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:57:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:57:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:57:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:57:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:57:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 14:57:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:57:22,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:22,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115457810] [2021-12-17 14:57:22,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115457810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:22,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:22,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:57:22,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687405792] [2021-12-17 14:57:22,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:22,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:57:22,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:57:22,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:57:22,807 INFO L87 Difference]: Start difference. First operand 479 states and 738 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:57:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:24,833 INFO L93 Difference]: Finished difference Result 1045 states and 1630 transitions. [2021-12-17 14:57:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:57:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2021-12-17 14:57:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:24,840 INFO L225 Difference]: With dead ends: 1045 [2021-12-17 14:57:24,840 INFO L226 Difference]: Without dead ends: 589 [2021-12-17 14:57:24,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:57:24,845 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1496 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:24,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1898 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 14:57:24,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-12-17 14:57:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 479. [2021-12-17 14:57:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 366 states have (on average 1.5573770491803278) internal successors, (570), 373 states have internal predecessors, (570), 82 states have call successors, (82), 29 states have call predecessors, (82), 30 states have return successors, (85), 78 states have call predecessors, (85), 79 states have call successors, (85) [2021-12-17 14:57:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 737 transitions. [2021-12-17 14:57:24,878 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 737 transitions. Word has length 149 [2021-12-17 14:57:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:24,879 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 737 transitions. [2021-12-17 14:57:24,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:57:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 737 transitions. [2021-12-17 14:57:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-17 14:57:24,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:24,883 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:24,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:57:24,884 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash -348459963, now seen corresponding path program 1 times [2021-12-17 14:57:24,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:24,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043283950] [2021-12-17 14:57:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:24,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:57:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:57:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 14:57:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:57:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:57:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:57:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:57:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:57:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:57:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:57:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:57:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:57:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:57:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:57:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 14:57:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-17 14:57:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-17 14:57:25,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:25,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043283950] [2021-12-17 14:57:25,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043283950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:25,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:25,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:57:25,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373444294] [2021-12-17 14:57:25,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:25,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:57:25,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:57:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:57:25,042 INFO L87 Difference]: Start difference. First operand 479 states and 737 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-17 14:57:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:26,827 INFO L93 Difference]: Finished difference Result 1047 states and 1633 transitions. [2021-12-17 14:57:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:57:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 169 [2021-12-17 14:57:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:26,837 INFO L225 Difference]: With dead ends: 1047 [2021-12-17 14:57:26,837 INFO L226 Difference]: Without dead ends: 591 [2021-12-17 14:57:26,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:57:26,842 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 1495 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:26,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 1891 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 14:57:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-17 14:57:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 481. [2021-12-17 14:57:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 367 states have (on average 1.555858310626703) internal successors, (571), 375 states have internal predecessors, (571), 82 states have call successors, (82), 29 states have call predecessors, (82), 31 states have return successors, (87), 78 states have call predecessors, (87), 79 states have call successors, (87) [2021-12-17 14:57:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 740 transitions. [2021-12-17 14:57:26,888 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 740 transitions. Word has length 169 [2021-12-17 14:57:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 740 transitions. [2021-12-17 14:57:26,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-17 14:57:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 740 transitions. [2021-12-17 14:57:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-17 14:57:26,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:26,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:26,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:57:26,893 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1529532807, now seen corresponding path program 1 times [2021-12-17 14:57:26,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:26,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353384049] [2021-12-17 14:57:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:26,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:57:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:57:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:57:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:57:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:57:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:57:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:57:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:57:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:57:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:57:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:57:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 14:57:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:57:27,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:27,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353384049] [2021-12-17 14:57:27,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353384049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:27,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:27,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:57:27,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199966756] [2021-12-17 14:57:27,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:27,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:57:27,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:57:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:57:27,050 INFO L87 Difference]: Start difference. First operand 481 states and 740 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-17 14:57:29,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:29,224 INFO L93 Difference]: Finished difference Result 1045 states and 1628 transitions. [2021-12-17 14:57:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:57:29,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2021-12-17 14:57:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:29,228 INFO L225 Difference]: With dead ends: 1045 [2021-12-17 14:57:29,228 INFO L226 Difference]: Without dead ends: 591 [2021-12-17 14:57:29,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:57:29,230 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1622 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:29,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 2494 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 14:57:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-17 14:57:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 481. [2021-12-17 14:57:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 367 states have (on average 1.555858310626703) internal successors, (571), 375 states have internal predecessors, (571), 82 states have call successors, (82), 29 states have call predecessors, (82), 31 states have return successors, (86), 78 states have call predecessors, (86), 79 states have call successors, (86) [2021-12-17 14:57:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 739 transitions. [2021-12-17 14:57:29,257 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 739 transitions. Word has length 151 [2021-12-17 14:57:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:29,257 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 739 transitions. [2021-12-17 14:57:29,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-17 14:57:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 739 transitions. [2021-12-17 14:57:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-17 14:57:29,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:29,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:57:29,261 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash -343594026, now seen corresponding path program 1 times [2021-12-17 14:57:29,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:29,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211443547] [2021-12-17 14:57:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:29,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:57:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:57:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:57:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:57:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:57:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:57:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:57:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:57:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:57:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:57:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:57:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-17 14:57:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-17 14:57:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-17 14:57:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-17 14:57:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:57:29,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:29,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211443547] [2021-12-17 14:57:29,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211443547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:29,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:29,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:57:29,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013101661] [2021-12-17 14:57:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:29,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:57:29,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:57:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:57:29,435 INFO L87 Difference]: Start difference. First operand 481 states and 739 transitions. Second operand has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 8 states have internal predecessors, (101), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-17 14:57:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:31,644 INFO L93 Difference]: Finished difference Result 1047 states and 1634 transitions. [2021-12-17 14:57:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:57:31,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 8 states have internal predecessors, (101), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 171 [2021-12-17 14:57:31,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:31,649 INFO L225 Difference]: With dead ends: 1047 [2021-12-17 14:57:31,649 INFO L226 Difference]: Without dead ends: 593 [2021-12-17 14:57:31,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:57:31,652 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1617 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 3568 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 3568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:31,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 2495 Invalid, 4174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 3568 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 14:57:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-12-17 14:57:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 483. [2021-12-17 14:57:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 368 states have (on average 1.5543478260869565) internal successors, (572), 377 states have internal predecessors, (572), 82 states have call successors, (82), 29 states have call predecessors, (82), 32 states have return successors, (91), 78 states have call predecessors, (91), 79 states have call successors, (91) [2021-12-17 14:57:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 745 transitions. [2021-12-17 14:57:31,676 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 745 transitions. Word has length 171 [2021-12-17 14:57:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:31,676 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 745 transitions. [2021-12-17 14:57:31,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 8 states have internal predecessors, (101), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-17 14:57:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 745 transitions. [2021-12-17 14:57:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-17 14:57:31,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:31,680 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:31,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:57:31,680 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1094231709, now seen corresponding path program 1 times [2021-12-17 14:57:31,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:31,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384513106] [2021-12-17 14:57:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:31,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:57:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:57:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:57:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:57:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:57:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:57:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:57:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:57:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:57:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:57:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:57:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 14:57:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:57:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-17 14:57:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-17 14:57:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:31,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:31,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384513106] [2021-12-17 14:57:31,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384513106] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:57:31,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127510239] [2021-12-17 14:57:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:31,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:31,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:57:31,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:57:31,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 14:57:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:57:32,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:57:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:32,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:57:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:32,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127510239] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:57:32,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:57:32,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-17 14:57:32,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504603707] [2021-12-17 14:57:32,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:57:32,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:57:32,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:57:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:57:32,624 INFO L87 Difference]: Start difference. First operand 483 states and 745 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (50), 6 states have call predecessors, (50), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-17 14:57:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:34,243 INFO L93 Difference]: Finished difference Result 1234 states and 2003 transitions. [2021-12-17 14:57:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:57:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (50), 6 states have call predecessors, (50), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 172 [2021-12-17 14:57:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:34,249 INFO L225 Difference]: With dead ends: 1234 [2021-12-17 14:57:34,249 INFO L226 Difference]: Without dead ends: 1010 [2021-12-17 14:57:34,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:57:34,251 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 2016 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:34,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 2278 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 14:57:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-12-17 14:57:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 876. [2021-12-17 14:57:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 682 states have (on average 1.6202346041055717) internal successors, (1105), 691 states have internal predecessors, (1105), 161 states have call successors, (161), 29 states have call predecessors, (161), 32 states have return successors, (180), 157 states have call predecessors, (180), 158 states have call successors, (180) [2021-12-17 14:57:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1446 transitions. [2021-12-17 14:57:34,294 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1446 transitions. Word has length 172 [2021-12-17 14:57:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:34,294 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1446 transitions. [2021-12-17 14:57:34,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (50), 6 states have call predecessors, (50), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-17 14:57:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1446 transitions. [2021-12-17 14:57:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-17 14:57:34,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:34,300 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:34,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-17 14:57:34,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:57:34,515 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 446801641, now seen corresponding path program 1 times [2021-12-17 14:57:34,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:34,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509170962] [2021-12-17 14:57:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:34,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:57:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:57:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:57:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:57:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:57:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:57:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:57:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 14:57:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:57:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:57:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:57:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:57:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:57:34,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:34,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509170962] [2021-12-17 14:57:34,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509170962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:34,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:34,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:34,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763537992] [2021-12-17 14:57:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:34,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:34,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:34,623 INFO L87 Difference]: Start difference. First operand 876 states and 1446 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:35,957 INFO L93 Difference]: Finished difference Result 2192 states and 3708 transitions. [2021-12-17 14:57:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2021-12-17 14:57:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:35,966 INFO L225 Difference]: With dead ends: 2192 [2021-12-17 14:57:35,966 INFO L226 Difference]: Without dead ends: 1384 [2021-12-17 14:57:35,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:35,970 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1486 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:35,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 1585 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 14:57:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-12-17 14:57:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1266. [2021-12-17 14:57:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 993 states have (on average 1.636455186304129) internal successors, (1625), 1002 states have internal predecessors, (1625), 240 states have call successors, (240), 29 states have call predecessors, (240), 32 states have return successors, (269), 236 states have call predecessors, (269), 237 states have call successors, (269) [2021-12-17 14:57:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2134 transitions. [2021-12-17 14:57:36,062 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2134 transitions. Word has length 159 [2021-12-17 14:57:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:36,062 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 2134 transitions. [2021-12-17 14:57:36,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2134 transitions. [2021-12-17 14:57:36,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-17 14:57:36,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:36,070 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:36,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:57:36,071 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1446004309, now seen corresponding path program 1 times [2021-12-17 14:57:36,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:36,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678668682] [2021-12-17 14:57:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:36,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:57:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:57:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:57:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:57:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:57:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:57:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:57:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:57:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:57:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:57:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:57:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-17 14:57:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:57:36,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678668682] [2021-12-17 14:57:36,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678668682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:36,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:36,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:36,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929101964] [2021-12-17 14:57:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:36,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:36,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:36,182 INFO L87 Difference]: Start difference. First operand 1266 states and 2134 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:37,583 INFO L93 Difference]: Finished difference Result 3141 states and 5382 transitions. [2021-12-17 14:57:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:37,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2021-12-17 14:57:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:37,595 INFO L225 Difference]: With dead ends: 3141 [2021-12-17 14:57:37,595 INFO L226 Difference]: Without dead ends: 1996 [2021-12-17 14:57:37,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:37,599 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 1485 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:37,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1550 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 14:57:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-12-17 14:57:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1878. [2021-12-17 14:57:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1486 states have (on average 1.6473755047106327) internal successors, (2448), 1495 states have internal predecessors, (2448), 359 states have call successors, (359), 29 states have call predecessors, (359), 32 states have return successors, (388), 355 states have call predecessors, (388), 356 states have call successors, (388) [2021-12-17 14:57:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3195 transitions. [2021-12-17 14:57:37,681 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3195 transitions. Word has length 160 [2021-12-17 14:57:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:37,681 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 3195 transitions. [2021-12-17 14:57:37,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3195 transitions. [2021-12-17 14:57:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-17 14:57:37,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:37,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:37,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:57:37,692 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 138998411, now seen corresponding path program 1 times [2021-12-17 14:57:37,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:37,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849176760] [2021-12-17 14:57:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:37,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:57:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:57:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:57:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:57:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:57:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:57:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:57:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:57:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 14:57:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 14:57:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 14:57:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:57:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:57:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849176760] [2021-12-17 14:57:37,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849176760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:37,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:37,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:37,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802551024] [2021-12-17 14:57:37,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:37,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:37,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:37,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:37,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:37,811 INFO L87 Difference]: Start difference. First operand 1878 states and 3195 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:39,007 INFO L93 Difference]: Finished difference Result 4566 states and 7916 transitions. [2021-12-17 14:57:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:39,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2021-12-17 14:57:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:39,022 INFO L225 Difference]: With dead ends: 4566 [2021-12-17 14:57:39,022 INFO L226 Difference]: Without dead ends: 2934 [2021-12-17 14:57:39,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:39,027 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1485 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:39,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1551 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:57:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2021-12-17 14:57:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2816. [2021-12-17 14:57:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2262 states have (on average 1.65605658709107) internal successors, (3746), 2271 states have internal predecessors, (3746), 521 states have call successors, (521), 29 states have call predecessors, (521), 32 states have return successors, (566), 517 states have call predecessors, (566), 518 states have call successors, (566) [2021-12-17 14:57:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4833 transitions. [2021-12-17 14:57:39,146 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4833 transitions. Word has length 161 [2021-12-17 14:57:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:39,147 INFO L470 AbstractCegarLoop]: Abstraction has 2816 states and 4833 transitions. [2021-12-17 14:57:39,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4833 transitions. [2021-12-17 14:57:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-17 14:57:39,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:39,163 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:39,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:57:39,163 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:39,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1895120099, now seen corresponding path program 1 times [2021-12-17 14:57:39,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:39,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528345984] [2021-12-17 14:57:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:39,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:57:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:57:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:57:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:57:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:57:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:57:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:57:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:57:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:57:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:57:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:57:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-17 14:57:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-17 14:57:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-17 14:57:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-17 14:57:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:39,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:39,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528345984] [2021-12-17 14:57:39,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528345984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:39,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:39,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:39,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440784484] [2021-12-17 14:57:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:39,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:39,264 INFO L87 Difference]: Start difference. First operand 2816 states and 4833 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:40,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:40,562 INFO L93 Difference]: Finished difference Result 6815 states and 11925 transitions. [2021-12-17 14:57:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2021-12-17 14:57:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:40,586 INFO L225 Difference]: With dead ends: 6815 [2021-12-17 14:57:40,586 INFO L226 Difference]: Without dead ends: 4449 [2021-12-17 14:57:40,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:40,596 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 1485 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:40,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 1544 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:57:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4449 states. [2021-12-17 14:57:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4449 to 4331. [2021-12-17 14:57:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 3532 states have (on average 1.6622310305775765) internal successors, (5871), 3541 states have internal predecessors, (5871), 766 states have call successors, (766), 29 states have call predecessors, (766), 32 states have return successors, (837), 762 states have call predecessors, (837), 763 states have call successors, (837) [2021-12-17 14:57:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 7474 transitions. [2021-12-17 14:57:40,808 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 7474 transitions. Word has length 181 [2021-12-17 14:57:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:40,809 INFO L470 AbstractCegarLoop]: Abstraction has 4331 states and 7474 transitions. [2021-12-17 14:57:40,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 7474 transitions. [2021-12-17 14:57:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-17 14:57:40,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:40,829 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:40,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:57:40,830 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:40,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1358906425, now seen corresponding path program 1 times [2021-12-17 14:57:40,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:40,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179412916] [2021-12-17 14:57:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:40,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:57:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:57:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:57:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:57:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:57:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:57:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:57:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:57:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 14:57:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:57:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:57:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 14:57:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:57:40,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:40,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179412916] [2021-12-17 14:57:40,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179412916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:40,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:40,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:40,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635446443] [2021-12-17 14:57:40,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:40,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:40,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:40,948 INFO L87 Difference]: Start difference. First operand 4331 states and 7474 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:42,290 INFO L93 Difference]: Finished difference Result 10831 states and 19037 transitions. [2021-12-17 14:57:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2021-12-17 14:57:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:42,338 INFO L225 Difference]: With dead ends: 10831 [2021-12-17 14:57:42,338 INFO L226 Difference]: Without dead ends: 7182 [2021-12-17 14:57:42,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:42,355 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1479 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:42,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1605 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:57:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-12-17 14:57:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 7064. [2021-12-17 14:57:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7064 states, 5772 states have (on average 1.659043659043659) internal successors, (9576), 5781 states have internal predecessors, (9576), 1259 states have call successors, (1259), 29 states have call predecessors, (1259), 32 states have return successors, (1374), 1255 states have call predecessors, (1374), 1256 states have call successors, (1374) [2021-12-17 14:57:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7064 states to 7064 states and 12209 transitions. [2021-12-17 14:57:42,723 INFO L78 Accepts]: Start accepts. Automaton has 7064 states and 12209 transitions. Word has length 163 [2021-12-17 14:57:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:42,724 INFO L470 AbstractCegarLoop]: Abstraction has 7064 states and 12209 transitions. [2021-12-17 14:57:42,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7064 states and 12209 transitions. [2021-12-17 14:57:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-17 14:57:42,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:42,754 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:42,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:57:42,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1055729191, now seen corresponding path program 1 times [2021-12-17 14:57:42,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:42,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735080915] [2021-12-17 14:57:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:42,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:57:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:57:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:57:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:57:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:57:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:57:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:57:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:57:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:57:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 14:57:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 14:57:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:57:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-17 14:57:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-17 14:57:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-17 14:57:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:42,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:42,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735080915] [2021-12-17 14:57:42,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735080915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:42,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:42,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:42,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036664633] [2021-12-17 14:57:42,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:42,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:42,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:42,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:42,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:42,893 INFO L87 Difference]: Start difference. First operand 7064 states and 12209 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:44,324 INFO L93 Difference]: Finished difference Result 17971 states and 31609 transitions. [2021-12-17 14:57:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2021-12-17 14:57:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:44,368 INFO L225 Difference]: With dead ends: 17971 [2021-12-17 14:57:44,369 INFO L226 Difference]: Without dead ends: 11966 [2021-12-17 14:57:44,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:44,394 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1480 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:44,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1582 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:57:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2021-12-17 14:57:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11848. [2021-12-17 14:57:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 9734 states have (on average 1.6595438668584344) internal successors, (16154), 9743 states have internal predecessors, (16154), 2081 states have call successors, (2081), 29 states have call predecessors, (2081), 32 states have return successors, (2274), 2077 states have call predecessors, (2274), 2078 states have call successors, (2274) [2021-12-17 14:57:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 20509 transitions. [2021-12-17 14:57:44,931 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 20509 transitions. Word has length 183 [2021-12-17 14:57:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:44,931 INFO L470 AbstractCegarLoop]: Abstraction has 11848 states and 20509 transitions. [2021-12-17 14:57:44,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 20509 transitions. [2021-12-17 14:57:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-17 14:57:44,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:44,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:44,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:57:44,964 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1088094784, now seen corresponding path program 1 times [2021-12-17 14:57:44,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:44,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134125195] [2021-12-17 14:57:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:44,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:57:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:57:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:57:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:57:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:57:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:57:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:57:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:57:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:57:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-17 14:57:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-17 14:57:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 14:57:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-17 14:57:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-17 14:57:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-17 14:57:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:45,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:45,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134125195] [2021-12-17 14:57:45,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134125195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:45,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:45,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:45,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732616452] [2021-12-17 14:57:45,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:45,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:45,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:45,073 INFO L87 Difference]: Start difference. First operand 11848 states and 20509 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:46,681 INFO L93 Difference]: Finished difference Result 28404 states and 49734 transitions. [2021-12-17 14:57:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:46,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2021-12-17 14:57:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:46,747 INFO L225 Difference]: With dead ends: 28404 [2021-12-17 14:57:46,747 INFO L226 Difference]: Without dead ends: 18559 [2021-12-17 14:57:46,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:46,775 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1475 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:46,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1555 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:57:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18559 states. [2021-12-17 14:57:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18559 to 18441. [2021-12-17 14:57:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 15124 states have (on average 1.6344882306268183) internal successors, (24720), 15133 states have internal predecessors, (24720), 3284 states have call successors, (3284), 29 states have call predecessors, (3284), 32 states have return successors, (3621), 3280 states have call predecessors, (3621), 3281 states have call successors, (3621) [2021-12-17 14:57:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 31625 transitions. [2021-12-17 14:57:47,600 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 31625 transitions. Word has length 184 [2021-12-17 14:57:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:47,601 INFO L470 AbstractCegarLoop]: Abstraction has 18441 states and 31625 transitions. [2021-12-17 14:57:47,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 31625 transitions. [2021-12-17 14:57:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-17 14:57:47,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:47,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:47,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:57:47,649 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1464571183, now seen corresponding path program 1 times [2021-12-17 14:57:47,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:47,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184516479] [2021-12-17 14:57:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:47,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:57:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:57:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:57:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:57:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:57:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:57:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:57:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:57:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:57:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 14:57:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-17 14:57:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-17 14:57:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:57:47,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184516479] [2021-12-17 14:57:47,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184516479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:47,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:47,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:47,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355989535] [2021-12-17 14:57:47,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:47,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:47,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:47,756 INFO L87 Difference]: Start difference. First operand 18441 states and 31625 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:49,919 INFO L93 Difference]: Finished difference Result 48826 states and 85238 transitions. [2021-12-17 14:57:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:49,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2021-12-17 14:57:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:50,044 INFO L225 Difference]: With dead ends: 48826 [2021-12-17 14:57:50,045 INFO L226 Difference]: Without dead ends: 32995 [2021-12-17 14:57:50,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:50,099 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 1471 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:50,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1555 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:57:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32995 states. [2021-12-17 14:57:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32995 to 32877. [2021-12-17 14:57:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32877 states, 27110 states have (on average 1.631390630763556) internal successors, (44227), 27119 states have internal predecessors, (44227), 5734 states have call successors, (5734), 29 states have call predecessors, (5734), 32 states have return successors, (6345), 5730 states have call predecessors, (6345), 5731 states have call successors, (6345) [2021-12-17 14:57:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32877 states to 32877 states and 56306 transitions. [2021-12-17 14:57:51,900 INFO L78 Accepts]: Start accepts. Automaton has 32877 states and 56306 transitions. Word has length 166 [2021-12-17 14:57:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:51,901 INFO L470 AbstractCegarLoop]: Abstraction has 32877 states and 56306 transitions. [2021-12-17 14:57:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:57:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 32877 states and 56306 transitions. [2021-12-17 14:57:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-17 14:57:51,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:51,963 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:51,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:57:51,963 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash -808123674, now seen corresponding path program 1 times [2021-12-17 14:57:51,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:51,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627109952] [2021-12-17 14:57:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:51,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:57:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:57:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:57:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:57:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:57:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:57:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:57:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:57:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:57:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 14:57:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-17 14:57:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-17 14:57:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-17 14:57:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-17 14:57:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-17 14:57:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:52,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:52,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627109952] [2021-12-17 14:57:52,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627109952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:52,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:52,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:52,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859763743] [2021-12-17 14:57:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:52,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:52,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:52,094 INFO L87 Difference]: Start difference. First operand 32877 states and 56306 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:57:54,557 INFO L93 Difference]: Finished difference Result 89723 states and 155872 transitions. [2021-12-17 14:57:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:57:54,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2021-12-17 14:57:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:57:54,809 INFO L225 Difference]: With dead ends: 89723 [2021-12-17 14:57:54,809 INFO L226 Difference]: Without dead ends: 60332 [2021-12-17 14:57:54,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:57:54,916 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 1469 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:57:54,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1559 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:57:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60332 states. [2021-12-17 14:57:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60332 to 60214. [2021-12-17 14:57:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60214 states, 49934 states have (on average 1.627147835142388) internal successors, (81250), 49943 states have internal predecessors, (81250), 10247 states have call successors, (10247), 29 states have call predecessors, (10247), 32 states have return successors, (11390), 10243 states have call predecessors, (11390), 10244 states have call successors, (11390) [2021-12-17 14:57:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60214 states to 60214 states and 102887 transitions. [2021-12-17 14:57:57,831 INFO L78 Accepts]: Start accepts. Automaton has 60214 states and 102887 transitions. Word has length 186 [2021-12-17 14:57:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:57:57,831 INFO L470 AbstractCegarLoop]: Abstraction has 60214 states and 102887 transitions. [2021-12-17 14:57:57,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:57:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 60214 states and 102887 transitions. [2021-12-17 14:57:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-17 14:57:57,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:57:57,912 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:57:57,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:57:57,912 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:57:57,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:57:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1975761560, now seen corresponding path program 1 times [2021-12-17 14:57:57,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:57:57,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429476368] [2021-12-17 14:57:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:57:57,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:57:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:57:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:57:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:57:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:57:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:57:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:57:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:57:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:57:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:57:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:57:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:57:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:57:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:57:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:57:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 14:57:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:57:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:57:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-17 14:57:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-17 14:57:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-17 14:57:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-17 14:57:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:57:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 14:57:58,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:57:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429476368] [2021-12-17 14:57:58,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429476368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:57:58,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:57:58,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:57:58,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697484784] [2021-12-17 14:57:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:57:58,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:57:58,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:57:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:57:58,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:57:58,047 INFO L87 Difference]: Start difference. First operand 60214 states and 102887 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:58:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:58:02,094 INFO L93 Difference]: Finished difference Result 112814 states and 196450 transitions. [2021-12-17 14:58:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:58:02,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 187 [2021-12-17 14:58:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:58:02,472 INFO L225 Difference]: With dead ends: 112814 [2021-12-17 14:58:02,473 INFO L226 Difference]: Without dead ends: 112590 [2021-12-17 14:58:02,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:58:02,518 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1472 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:58:02,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1552 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 14:58:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112590 states. [2021-12-17 14:58:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112590 to 112472. [2021-12-17 14:58:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112472 states, 93824 states have (on average 1.6217279160982265) internal successors, (152157), 93833 states have internal predecessors, (152157), 18615 states have call successors, (18615), 29 states have call predecessors, (18615), 32 states have return successors, (20804), 18611 states have call predecessors, (20804), 18612 states have call successors, (20804) [2021-12-17 14:58:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112472 states to 112472 states and 191576 transitions. [2021-12-17 14:58:07,062 INFO L78 Accepts]: Start accepts. Automaton has 112472 states and 191576 transitions. Word has length 187 [2021-12-17 14:58:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:58:07,062 INFO L470 AbstractCegarLoop]: Abstraction has 112472 states and 191576 transitions. [2021-12-17 14:58:07,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-17 14:58:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 112472 states and 191576 transitions. [2021-12-17 14:58:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-17 14:58:07,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:58:07,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:58:07,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:58:07,458 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:58:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:58:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1525935458, now seen corresponding path program 1 times [2021-12-17 14:58:07,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:58:07,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751527028] [2021-12-17 14:58:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:58:07,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:58:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:58:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:58:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:58:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:58:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:58:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:58:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:58:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:58:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:58:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:58:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:58:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:58:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:58:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:58:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:58:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:58:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 14:58:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-17 14:58:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:58:07,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:58:07,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751527028] [2021-12-17 14:58:07,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751527028] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:58:07,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706638956] [2021-12-17 14:58:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:58:07,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:58:07,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:58:07,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:58:07,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 14:58:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:58:07,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 14:58:07,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:58:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-17 14:58:08,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:58:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:58:08,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706638956] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:58:08,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:58:08,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-17 14:58:08,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774026861] [2021-12-17 14:58:08,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:58:08,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-17 14:58:08,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:58:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-17 14:58:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-17 14:58:08,805 INFO L87 Difference]: Start difference. First operand 112472 states and 191576 transitions. Second operand has 32 states, 30 states have (on average 8.733333333333333) internal successors, (262), 24 states have internal predecessors, (262), 9 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47)