./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product28.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_spec8_product28.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 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:03:42,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:03:42,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:03:42,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:03:42,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:03:42,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:03:42,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:03:42,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:03:42,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:03:42,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:03:42,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:03:42,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:03:42,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:03:42,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:03:42,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:03:42,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:03:42,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:03:42,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:03:42,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:03:42,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:03:42,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:03:42,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:03:42,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:03:42,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:03:42,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:03:42,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:03:42,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:03:42,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:03:42,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:03:42,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:03:42,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:03:42,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:03:42,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:03:42,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:03:42,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:03:42,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:03:42,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:03:42,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:03:42,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:03:42,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:03:42,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:03:42,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:03:42,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:03:42,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:03:42,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:03:42,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:03:42,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:03:42,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:03:42,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:03:42,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:03:42,531 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:03:42,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:03:42,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:03:42,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:03:42,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:03:42,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:03:42,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:03:42,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:03:42,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:03:42,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:03:42,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:03:42,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:03:42,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:03:42,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:03:42,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:03:42,535 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:03:42,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:03:42,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:03:42,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:03:42,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 [2021-12-17 15:03:42,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:03:42,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:03:42,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:03:42,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:03:42,765 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:03:42,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2021-12-17 15:03:42,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b1218ae/652d596f9baf47a1a7d057612ea74bce/FLAGfa04ff817 [2021-12-17 15:03:43,237 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:03:43,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2021-12-17 15:03:43,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b1218ae/652d596f9baf47a1a7d057612ea74bce/FLAGfa04ff817 [2021-12-17 15:03:43,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b1218ae/652d596f9baf47a1a7d057612ea74bce [2021-12-17 15:03:43,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:03:43,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:03:43,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:03:43,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:03:43,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:03:43,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aff67fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43, skipping insertion in model container [2021-12-17 15:03:43,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:03:43,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:03:43,627 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_spec8_product28.cil.c[29342,29355] [2021-12-17 15:03:43,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:03:43,767 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:03:43,800 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_spec8_product28.cil.c[29342,29355] [2021-12-17 15:03:43,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:03:43,859 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:03:43,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43 WrapperNode [2021-12-17 15:03:43,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:03:43,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:03:43,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:03:43,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:03:43,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,934 INFO L137 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 868 [2021-12-17 15:03:43,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:03:43,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:03:43,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:03:43,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:03:43,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:43,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:03:43,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:03:43,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:03:43,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:03:43,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (1/1) ... [2021-12-17 15:03:44,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:03:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:44,029 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 15:03:44,039 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 15:03:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-17 15:03:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-17 15:03:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-17 15:03:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-17 15:03:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-17 15:03:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-17 15:03:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-17 15:03:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-17 15:03:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-17 15:03:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-17 15:03:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-17 15:03:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-17 15:03:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:03:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-17 15:03:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-17 15:03:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-17 15:03:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-17 15:03:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-17 15:03:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-17 15:03:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-17 15:03:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-17 15:03:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-17 15:03:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-17 15:03:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-17 15:03:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-17 15:03:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:03:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-17 15:03:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-17 15:03:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:03:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:03:44,286 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:03:44,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:03:44,766 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:03:44,779 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:03:44,779 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 15:03:44,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:03:44 BoogieIcfgContainer [2021-12-17 15:03:44,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:03:44,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:03:44,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:03:44,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:03:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:03:43" (1/3) ... [2021-12-17 15:03:44,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7d4681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:03:44, skipping insertion in model container [2021-12-17 15:03:44,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:43" (2/3) ... [2021-12-17 15:03:44,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7d4681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:03:44, skipping insertion in model container [2021-12-17 15:03:44,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:03:44" (3/3) ... [2021-12-17 15:03:44,790 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product28.cil.c [2021-12-17 15:03:44,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:03:44,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:03:44,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:03:44,833 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 15:03:44,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:03:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 254 states have (on average 1.5196850393700787) internal successors, (386), 258 states have internal predecessors, (386), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-17 15:03:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 15:03:44,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:44,857 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:44,858 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1688169557, now seen corresponding path program 1 times [2021-12-17 15:03:44,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:44,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657657595] [2021-12-17 15:03:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:44,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 15:03:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 15:03:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 15:03:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 15:03:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 15:03:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 15:03:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 15:03:45,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657657595] [2021-12-17 15:03:45,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657657595] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:45,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579521123] [2021-12-17 15:03:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:45,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:45,215 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 15:03:45,216 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 15:03:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 15:03:45,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 15:03:45,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:45,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579521123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:45,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:45,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-17 15:03:45,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649908798] [2021-12-17 15:03:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:45,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:03:45,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:03:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:03:45,589 INFO L87 Difference]: Start difference. First operand has 328 states, 254 states have (on average 1.5196850393700787) internal successors, (386), 258 states have internal predecessors, (386), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:45,620 INFO L93 Difference]: Finished difference Result 507 states and 734 transitions. [2021-12-17 15:03:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:03:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2021-12-17 15:03:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:45,635 INFO L225 Difference]: With dead ends: 507 [2021-12-17 15:03:45,635 INFO L226 Difference]: Without dead ends: 321 [2021-12-17 15:03:45,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:03:45,641 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:45,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-17 15:03:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-12-17 15:03:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.5120967741935485) internal successors, (375), 251 states have internal predecessors, (375), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-17 15:03:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 474 transitions. [2021-12-17 15:03:45,713 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 474 transitions. Word has length 98 [2021-12-17 15:03:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:45,715 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 474 transitions. [2021-12-17 15:03:45,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 474 transitions. [2021-12-17 15:03:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 15:03:45,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:45,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:45,752 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 15:03:45,936 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 15:03:45,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash 491471702, now seen corresponding path program 1 times [2021-12-17 15:03:45,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:45,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667515573] [2021-12-17 15:03:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:45,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 15:03:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 15:03:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 15:03:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 15:03:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 15:03:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 15:03:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 15:03:46,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:46,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667515573] [2021-12-17 15:03:46,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667515573] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:46,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635617592] [2021-12-17 15:03:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:46,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:46,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:46,069 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 15:03:46,070 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 15:03:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 15:03:46,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 15:03:46,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:46,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635617592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:46,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:46,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-17 15:03:46,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553176897] [2021-12-17 15:03:46,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:46,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:03:46,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:46,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:03:46,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:46,408 INFO L87 Difference]: Start difference. First operand 321 states and 474 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:46,440 INFO L93 Difference]: Finished difference Result 497 states and 715 transitions. [2021-12-17 15:03:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:03:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2021-12-17 15:03:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:46,446 INFO L225 Difference]: With dead ends: 497 [2021-12-17 15:03:46,446 INFO L226 Difference]: Without dead ends: 324 [2021-12-17 15:03:46,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:46,449 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 1 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:46,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 942 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-12-17 15:03:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2021-12-17 15:03:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 250 states have (on average 1.508) internal successors, (377), 253 states have internal predecessors, (377), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-17 15:03:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 476 transitions. [2021-12-17 15:03:46,463 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 476 transitions. Word has length 99 [2021-12-17 15:03:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:46,463 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 476 transitions. [2021-12-17 15:03:46,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 476 transitions. [2021-12-17 15:03:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:03:46,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:46,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:46,485 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 15:03:46,683 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 15:03:46,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash -221745491, now seen corresponding path program 1 times [2021-12-17 15:03:46,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678026975] [2021-12-17 15:03:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:46,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 15:03:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 15:03:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 15:03:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 15:03:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 15:03:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 15:03:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:46,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:46,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678026975] [2021-12-17 15:03:46,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678026975] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:46,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156959595] [2021-12-17 15:03:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:46,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:46,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:46,786 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 15:03:46,787 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 15:03:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 15:03:46,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 15:03:47,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:47,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156959595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:47,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:47,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-17 15:03:47,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337609842] [2021-12-17 15:03:47,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:47,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:03:47,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:47,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:03:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:47,108 INFO L87 Difference]: Start difference. First operand 323 states and 476 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:47,126 INFO L93 Difference]: Finished difference Result 671 states and 1003 transitions. [2021-12-17 15:03:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:03:47,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2021-12-17 15:03:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:47,129 INFO L225 Difference]: With dead ends: 671 [2021-12-17 15:03:47,129 INFO L226 Difference]: Without dead ends: 375 [2021-12-17 15:03:47,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:47,131 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 99 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 918 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 15:03:47,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 918 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:47,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-17 15:03:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 367. [2021-12-17 15:03:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 286 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-17 15:03:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 552 transitions. [2021-12-17 15:03:47,152 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 552 transitions. Word has length 105 [2021-12-17 15:03:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:47,153 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 552 transitions. [2021-12-17 15:03:47,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 552 transitions. [2021-12-17 15:03:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 15:03:47,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:47,154 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:47,172 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 15:03:47,355 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 15:03:47,355 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1964089952, now seen corresponding path program 1 times [2021-12-17 15:03:47,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937659012] [2021-12-17 15:03:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:47,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 15:03:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 15:03:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 15:03:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 15:03:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 15:03:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 15:03:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:47,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:47,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937659012] [2021-12-17 15:03:47,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937659012] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:47,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603071584] [2021-12-17 15:03:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:47,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:47,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:47,462 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 15:03:47,463 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 15:03:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:47,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 15:03:47,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 15:03:47,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:47,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603071584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:47,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:47,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-17 15:03:47,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366850927] [2021-12-17 15:03:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:47,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:03:47,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:03:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:03:47,830 INFO L87 Difference]: Start difference. First operand 367 states and 552 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:47,876 INFO L93 Difference]: Finished difference Result 725 states and 1094 transitions. [2021-12-17 15:03:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:03:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2021-12-17 15:03:47,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:47,878 INFO L225 Difference]: With dead ends: 725 [2021-12-17 15:03:47,879 INFO L226 Difference]: Without dead ends: 369 [2021-12-17 15:03:47,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:03:47,880 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 117 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:47,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1724 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-17 15:03:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-12-17 15:03:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 288 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-12-17 15:03:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 555 transitions. [2021-12-17 15:03:47,892 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 555 transitions. Word has length 106 [2021-12-17 15:03:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:47,892 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 555 transitions. [2021-12-17 15:03:47,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 555 transitions. [2021-12-17 15:03:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 15:03:47,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:47,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:47,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:48,107 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 15:03:48,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1110095373, now seen corresponding path program 1 times [2021-12-17 15:03:48,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090549058] [2021-12-17 15:03:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:48,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:03:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 15:03:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 15:03:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 15:03:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 15:03:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 15:03:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 15:03:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 15:03:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:03:48,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:48,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090549058] [2021-12-17 15:03:48,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090549058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:48,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990574638] [2021-12-17 15:03:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:48,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:48,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:48,240 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 15:03:48,241 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 15:03:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 15:03:48,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 15:03:48,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:48,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990574638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:48,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:48,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-17 15:03:48,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306713577] [2021-12-17 15:03:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:48,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:03:48,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:03:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-17 15:03:48,564 INFO L87 Difference]: Start difference. First operand 369 states and 555 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:48,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:48,627 INFO L93 Difference]: Finished difference Result 727 states and 1099 transitions. [2021-12-17 15:03:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:03:48,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2021-12-17 15:03:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:48,630 INFO L225 Difference]: With dead ends: 727 [2021-12-17 15:03:48,630 INFO L226 Difference]: Without dead ends: 371 [2021-12-17 15:03:48,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-17 15:03:48,631 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 116 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:48,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1713 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-17 15:03:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-17 15:03:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 290 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-17 15:03:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 561 transitions. [2021-12-17 15:03:48,642 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 561 transitions. Word has length 107 [2021-12-17 15:03:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:48,642 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 561 transitions. [2021-12-17 15:03:48,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 561 transitions. [2021-12-17 15:03:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 15:03:48,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:48,644 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:48,663 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 15:03:48,861 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 15:03:48,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:48,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:48,862 INFO L85 PathProgramCache]: Analyzing trace with hash 303759806, now seen corresponding path program 1 times [2021-12-17 15:03:48,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:48,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006338917] [2021-12-17 15:03:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:48,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 15:03:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 15:03:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 15:03:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:03:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:03:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 15:03:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 15:03:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:48,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:48,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006338917] [2021-12-17 15:03:48,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006338917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:48,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:48,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:03:48,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056030756] [2021-12-17 15:03:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:48,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:03:48,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:03:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:03:48,940 INFO L87 Difference]: Start difference. First operand 371 states and 561 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:49,847 INFO L93 Difference]: Finished difference Result 791 states and 1202 transitions. [2021-12-17 15:03:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:49,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2021-12-17 15:03:49,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:49,849 INFO L225 Difference]: With dead ends: 791 [2021-12-17 15:03:49,849 INFO L226 Difference]: Without dead ends: 443 [2021-12-17 15:03:49,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-17 15:03:49,851 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 882 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:49,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1346 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-17 15:03:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 371. [2021-12-17 15:03:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 290 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-12-17 15:03:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 560 transitions. [2021-12-17 15:03:49,865 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 560 transitions. Word has length 108 [2021-12-17 15:03:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:49,865 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 560 transitions. [2021-12-17 15:03:49,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 560 transitions. [2021-12-17 15:03:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 15:03:49,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:49,866 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:49,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:03:49,867 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:49,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1105541005, now seen corresponding path program 2 times [2021-12-17 15:03:49,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:49,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594452784] [2021-12-17 15:03:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:49,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 15:03:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 15:03:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 15:03:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 15:03:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 15:03:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 15:03:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 15:03:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:49,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594452784] [2021-12-17 15:03:49,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594452784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:49,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:49,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:03:49,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169673852] [2021-12-17 15:03:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:49,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:03:49,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:03:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:03:49,935 INFO L87 Difference]: Start difference. First operand 371 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:50,793 INFO L93 Difference]: Finished difference Result 793 states and 1205 transitions. [2021-12-17 15:03:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:50,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2021-12-17 15:03:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:50,799 INFO L225 Difference]: With dead ends: 793 [2021-12-17 15:03:50,799 INFO L226 Difference]: Without dead ends: 445 [2021-12-17 15:03:50,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-17 15:03:50,801 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 886 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:50,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 1335 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-12-17 15:03:50,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 373. [2021-12-17 15:03:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 292 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-17 15:03:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 563 transitions. [2021-12-17 15:03:50,826 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 563 transitions. Word has length 109 [2021-12-17 15:03:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:50,827 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 563 transitions. [2021-12-17 15:03:50,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 15:03:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 563 transitions. [2021-12-17 15:03:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 15:03:50,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:50,830 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:50,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:03:50,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:50,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1885955783, now seen corresponding path program 1 times [2021-12-17 15:03:50,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:50,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641591639] [2021-12-17 15:03:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:50,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 15:03:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 15:03:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 15:03:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 15:03:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:03:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 15:03:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:03:50,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:50,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641591639] [2021-12-17 15:03:50,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641591639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:50,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:50,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 15:03:50,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513417476] [2021-12-17 15:03:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:50,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 15:03:50,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 15:03:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:03:50,950 INFO L87 Difference]: Start difference. First operand 373 states and 563 transitions. Second operand has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 15:03:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:52,232 INFO L93 Difference]: Finished difference Result 791 states and 1200 transitions. [2021-12-17 15:03:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 15:03:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 110 [2021-12-17 15:03:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:52,234 INFO L225 Difference]: With dead ends: 791 [2021-12-17 15:03:52,234 INFO L226 Difference]: Without dead ends: 445 [2021-12-17 15:03:52,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-17 15:03:52,237 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 982 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:52,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1776 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 15:03:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-12-17 15:03:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 373. [2021-12-17 15:03:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 292 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-17 15:03:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 562 transitions. [2021-12-17 15:03:52,258 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 562 transitions. Word has length 110 [2021-12-17 15:03:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:52,258 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 562 transitions. [2021-12-17 15:03:52,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 15:03:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 562 transitions. [2021-12-17 15:03:52,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 15:03:52,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:52,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:52,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:03:52,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2027319372, now seen corresponding path program 2 times [2021-12-17 15:03:52,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:52,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396639157] [2021-12-17 15:03:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:52,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 15:03:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 15:03:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 15:03:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:03:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 15:03:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 15:03:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:03:52,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:52,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396639157] [2021-12-17 15:03:52,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396639157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:52,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:52,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 15:03:52,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769346435] [2021-12-17 15:03:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:52,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 15:03:52,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 15:03:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:03:52,386 INFO L87 Difference]: Start difference. First operand 373 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 15:03:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:53,676 INFO L93 Difference]: Finished difference Result 793 states and 1206 transitions. [2021-12-17 15:03:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 15:03:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 111 [2021-12-17 15:03:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:53,679 INFO L225 Difference]: With dead ends: 793 [2021-12-17 15:03:53,679 INFO L226 Difference]: Without dead ends: 447 [2021-12-17 15:03:53,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-17 15:03:53,681 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 1020 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:53,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1742 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 15:03:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-17 15:03:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 375. [2021-12-17 15:03:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 287 states have (on average 1.5156794425087108) internal successors, (435), 294 states have internal predecessors, (435), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-12-17 15:03:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 568 transitions. [2021-12-17 15:03:53,693 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 568 transitions. Word has length 111 [2021-12-17 15:03:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:53,693 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 568 transitions. [2021-12-17 15:03:53,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 15:03:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 568 transitions. [2021-12-17 15:03:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 15:03:53,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:53,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:53,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:03:53,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1877256588, now seen corresponding path program 1 times [2021-12-17 15:03:53,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:53,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730006819] [2021-12-17 15:03:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:53,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 15:03:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 15:03:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 15:03:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 15:03:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 15:03:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:03:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:53,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:53,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730006819] [2021-12-17 15:03:53,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730006819] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:53,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867697194] [2021-12-17 15:03:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:53,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:53,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:53,763 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 15:03:53,764 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 15:03:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:53,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 15:03:53,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:54,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 15:03:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:54,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867697194] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 15:03:54,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 15:03:54,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-17 15:03:54,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168588982] [2021-12-17 15:03:54,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 15:03:54,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 15:03:54,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 15:03:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:54,254 INFO L87 Difference]: Start difference. First operand 375 states and 568 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 15:03:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:55,282 INFO L93 Difference]: Finished difference Result 947 states and 1504 transitions. [2021-12-17 15:03:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:03:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2021-12-17 15:03:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:55,286 INFO L225 Difference]: With dead ends: 947 [2021-12-17 15:03:55,286 INFO L226 Difference]: Without dead ends: 774 [2021-12-17 15:03:55,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-17 15:03:55,287 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1197 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:55,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 1888 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 15:03:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-17 15:03:55,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 678. [2021-12-17 15:03:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 526 states have (on average 1.5836501901140685) internal successors, (833), 533 states have internal predecessors, (833), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-12-17 15:03:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1104 transitions. [2021-12-17 15:03:55,313 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1104 transitions. Word has length 112 [2021-12-17 15:03:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:55,313 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1104 transitions. [2021-12-17 15:03:55,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 15:03:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1104 transitions. [2021-12-17 15:03:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 15:03:55,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:55,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:55,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:55,527 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 15:03:55,528 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1908706807, now seen corresponding path program 1 times [2021-12-17 15:03:55,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:55,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029681548] [2021-12-17 15:03:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:55,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 15:03:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 15:03:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 15:03:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 15:03:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 15:03:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 15:03:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:55,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:55,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029681548] [2021-12-17 15:03:55,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029681548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:55,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:55,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:03:55,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235744246] [2021-12-17 15:03:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:55,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:03:55,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:03:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:03:55,607 INFO L87 Difference]: Start difference. First operand 678 states and 1104 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:56,291 INFO L93 Difference]: Finished difference Result 1668 states and 2783 transitions. [2021-12-17 15:03:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:03:56,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-12-17 15:03:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:56,296 INFO L225 Difference]: With dead ends: 1668 [2021-12-17 15:03:56,296 INFO L226 Difference]: Without dead ends: 1058 [2021-12-17 15:03:56,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:56,299 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 865 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:56,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 1141 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:03:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-12-17 15:03:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 978. [2021-12-17 15:03:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 762 states have (on average 1.5984251968503937) internal successors, (1218), 769 states have internal predecessors, (1218), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-12-17 15:03:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1627 transitions. [2021-12-17 15:03:56,355 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1627 transitions. Word has length 118 [2021-12-17 15:03:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:56,355 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1627 transitions. [2021-12-17 15:03:56,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1627 transitions. [2021-12-17 15:03:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-17 15:03:56,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:56,359 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:56,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 15:03:56,359 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:56,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash 315871257, now seen corresponding path program 1 times [2021-12-17 15:03:56,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:56,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432359534] [2021-12-17 15:03:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:56,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 15:03:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 15:03:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 15:03:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 15:03:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:03:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 15:03:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:56,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:56,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432359534] [2021-12-17 15:03:56,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432359534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:56,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:56,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:03:56,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33455396] [2021-12-17 15:03:56,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:56,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:03:56,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:56,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:03:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:03:56,430 INFO L87 Difference]: Start difference. First operand 978 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:57,143 INFO L93 Difference]: Finished difference Result 2383 states and 4028 transitions. [2021-12-17 15:03:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:03:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-17 15:03:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:57,150 INFO L225 Difference]: With dead ends: 2383 [2021-12-17 15:03:57,150 INFO L226 Difference]: Without dead ends: 1526 [2021-12-17 15:03:57,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:57,153 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 869 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:57,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1092 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:03:57,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2021-12-17 15:03:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1446. [2021-12-17 15:03:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1135 states have (on average 1.6079295154185023) internal successors, (1825), 1142 states have internal predecessors, (1825), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-12-17 15:03:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2424 transitions. [2021-12-17 15:03:57,208 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2424 transitions. Word has length 119 [2021-12-17 15:03:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:57,208 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 2424 transitions. [2021-12-17 15:03:57,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2424 transitions. [2021-12-17 15:03:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 15:03:57,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:57,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:57,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 15:03:57,214 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1683939179, now seen corresponding path program 1 times [2021-12-17 15:03:57,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:57,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280231390] [2021-12-17 15:03:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:57,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 15:03:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 15:03:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 15:03:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 15:03:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 15:03:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 15:03:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:57,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:57,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280231390] [2021-12-17 15:03:57,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280231390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:57,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:57,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:03:57,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60764021] [2021-12-17 15:03:57,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:57,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:03:57,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:03:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:03:57,285 INFO L87 Difference]: Start difference. First operand 1446 states and 2424 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:57,976 INFO L93 Difference]: Finished difference Result 3430 states and 5869 transitions. [2021-12-17 15:03:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:03:57,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2021-12-17 15:03:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:57,986 INFO L225 Difference]: With dead ends: 3430 [2021-12-17 15:03:57,986 INFO L226 Difference]: Without dead ends: 2230 [2021-12-17 15:03:57,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:57,989 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 861 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:57,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 1101 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:03:57,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2021-12-17 15:03:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2150. [2021-12-17 15:03:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1716 states have (on average 1.6153846153846154) internal successors, (2772), 1723 states have internal predecessors, (2772), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-12-17 15:03:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3633 transitions. [2021-12-17 15:03:58,082 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3633 transitions. Word has length 120 [2021-12-17 15:03:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:58,082 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3633 transitions. [2021-12-17 15:03:58,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3633 transitions. [2021-12-17 15:03:58,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-17 15:03:58,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:58,089 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:58,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 15:03:58,089 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:58,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2032510696, now seen corresponding path program 1 times [2021-12-17 15:03:58,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:58,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561838633] [2021-12-17 15:03:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:58,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 15:03:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 15:03:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 15:03:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:03:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:03:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 15:03:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:58,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:58,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561838633] [2021-12-17 15:03:58,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561838633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:58,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:58,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:03:58,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28479042] [2021-12-17 15:03:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:58,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:03:58,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:03:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:03:58,157 INFO L87 Difference]: Start difference. First operand 2150 states and 3633 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:58,891 INFO L93 Difference]: Finished difference Result 5049 states and 8723 transitions. [2021-12-17 15:03:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:03:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-17 15:03:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:58,904 INFO L225 Difference]: With dead ends: 5049 [2021-12-17 15:03:58,904 INFO L226 Difference]: Without dead ends: 3349 [2021-12-17 15:03:58,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:58,909 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 899 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:58,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 1073 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:03:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2021-12-17 15:03:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 3269. [2021-12-17 15:03:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2656 states have (on average 1.620105421686747) internal successors, (4303), 2663 states have internal predecessors, (4303), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-12-17 15:03:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 5548 transitions. [2021-12-17 15:03:59,045 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 5548 transitions. Word has length 121 [2021-12-17 15:03:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:59,046 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 5548 transitions. [2021-12-17 15:03:59,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 5548 transitions. [2021-12-17 15:03:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 15:03:59,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:59,054 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:03:59,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 15:03:59,054 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash 854956121, now seen corresponding path program 1 times [2021-12-17 15:03:59,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:59,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249498664] [2021-12-17 15:03:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:59,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 15:03:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:03:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 15:03:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 15:03:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 15:03:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 15:03:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:59,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249498664] [2021-12-17 15:03:59,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249498664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:59,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:59,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:03:59,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107717475] [2021-12-17 15:03:59,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:59,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:03:59,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:03:59,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:03:59,118 INFO L87 Difference]: Start difference. First operand 3269 states and 5548 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:03:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:59,863 INFO L93 Difference]: Finished difference Result 7967 states and 13822 transitions. [2021-12-17 15:03:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:03:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2021-12-17 15:03:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:59,884 INFO L225 Difference]: With dead ends: 7967 [2021-12-17 15:03:59,884 INFO L226 Difference]: Without dead ends: 5380 [2021-12-17 15:03:59,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:59,891 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 859 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:59,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 1154 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:03:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2021-12-17 15:04:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5300. [2021-12-17 15:04:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 4311 states have (on average 1.6133147761540245) internal successors, (6955), 4318 states have internal predecessors, (6955), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-12-17 15:04:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 8996 transitions. [2021-12-17 15:04:00,111 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 8996 transitions. Word has length 122 [2021-12-17 15:04:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:00,112 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 8996 transitions. [2021-12-17 15:04:00,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 8996 transitions. [2021-12-17 15:04:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 15:04:00,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:00,154 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:00,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 15:04:00,155 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 752377172, now seen corresponding path program 1 times [2021-12-17 15:04:00,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:00,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866855384] [2021-12-17 15:04:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:00,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 15:04:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 15:04:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 15:04:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 15:04:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 15:04:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 15:04:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:00,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866855384] [2021-12-17 15:04:00,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866855384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:00,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:00,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:04:00,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426222101] [2021-12-17 15:04:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:00,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:04:00,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:04:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:04:00,224 INFO L87 Difference]: Start difference. First operand 5300 states and 8996 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:01,072 INFO L93 Difference]: Finished difference Result 13109 states and 22731 transitions. [2021-12-17 15:04:01,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:04:01,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2021-12-17 15:04:01,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:01,140 INFO L225 Difference]: With dead ends: 13109 [2021-12-17 15:04:01,140 INFO L226 Difference]: Without dead ends: 8868 [2021-12-17 15:04:01,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:04:01,171 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 885 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:01,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1107 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:04:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2021-12-17 15:04:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8788. [2021-12-17 15:04:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8788 states, 7193 states have (on average 1.6111497289031003) internal successors, (11589), 7200 states have internal predecessors, (11589), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-12-17 15:04:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8788 states to 8788 states and 14920 transitions. [2021-12-17 15:04:01,517 INFO L78 Accepts]: Start accepts. Automaton has 8788 states and 14920 transitions. Word has length 123 [2021-12-17 15:04:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:01,517 INFO L470 AbstractCegarLoop]: Abstraction has 8788 states and 14920 transitions. [2021-12-17 15:04:01,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8788 states and 14920 transitions. [2021-12-17 15:04:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 15:04:01,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:01,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:01,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 15:04:01,534 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 989095191, now seen corresponding path program 1 times [2021-12-17 15:04:01,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:01,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160365246] [2021-12-17 15:04:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:01,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 15:04:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 15:04:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 15:04:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 15:04:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 15:04:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 15:04:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:01,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:01,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160365246] [2021-12-17 15:04:01,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160365246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:01,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:01,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:04:01,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812065741] [2021-12-17 15:04:01,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:01,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:04:01,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:01,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:04:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:04:01,599 INFO L87 Difference]: Start difference. First operand 8788 states and 14920 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:02,663 INFO L93 Difference]: Finished difference Result 22768 states and 39437 transitions. [2021-12-17 15:04:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:04:02,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2021-12-17 15:04:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:02,736 INFO L225 Difference]: With dead ends: 22768 [2021-12-17 15:04:02,736 INFO L226 Difference]: Without dead ends: 15461 [2021-12-17 15:04:02,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:04:02,751 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 883 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:02,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 1136 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:04:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2021-12-17 15:04:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 15381. [2021-12-17 15:04:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 12583 states have (on average 1.6017642851466265) internal successors, (20155), 12590 states have internal predecessors, (20155), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-12-17 15:04:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 26036 transitions. [2021-12-17 15:04:03,307 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 26036 transitions. Word has length 124 [2021-12-17 15:04:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:03,307 INFO L470 AbstractCegarLoop]: Abstraction has 15381 states and 26036 transitions. [2021-12-17 15:04:03,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 26036 transitions. [2021-12-17 15:04:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-17 15:04:03,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:03,336 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:03,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 15:04:03,336 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash 11822771, now seen corresponding path program 1 times [2021-12-17 15:04:03,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:03,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730978143] [2021-12-17 15:04:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:03,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 15:04:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:04:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 15:04:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 15:04:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 15:04:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 15:04:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:03,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730978143] [2021-12-17 15:04:03,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730978143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:03,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:03,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:04:03,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6534396] [2021-12-17 15:04:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:03,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:04:03,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:04:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:04:03,397 INFO L87 Difference]: Start difference. First operand 15381 states and 26036 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:04,923 INFO L93 Difference]: Finished difference Result 40724 states and 70420 transitions. [2021-12-17 15:04:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:04:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2021-12-17 15:04:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:05,012 INFO L225 Difference]: With dead ends: 40724 [2021-12-17 15:04:05,012 INFO L226 Difference]: Without dead ends: 27431 [2021-12-17 15:04:05,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:04:05,039 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 885 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:05,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1085 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:04:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27431 states. [2021-12-17 15:04:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27431 to 27351. [2021-12-17 15:04:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27351 states, 22514 states have (on average 1.5973616416451986) internal successors, (35963), 22521 states have internal predecessors, (35963), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-12-17 15:04:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 46196 transitions. [2021-12-17 15:04:06,059 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 46196 transitions. Word has length 125 [2021-12-17 15:04:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:06,059 INFO L470 AbstractCegarLoop]: Abstraction has 27351 states and 46196 transitions. [2021-12-17 15:04:06,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 46196 transitions. [2021-12-17 15:04:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-17 15:04:06,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:06,084 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:06,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 15:04:06,084 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -496859787, now seen corresponding path program 1 times [2021-12-17 15:04:06,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967268100] [2021-12-17 15:04:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:06,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 15:04:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 15:04:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 15:04:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 15:04:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 15:04:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 15:04:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:06,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967268100] [2021-12-17 15:04:06,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967268100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:06,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:06,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:04:06,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544838265] [2021-12-17 15:04:06,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:06,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:04:06,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:04:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:04:06,154 INFO L87 Difference]: Start difference. First operand 27351 states and 46196 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:08,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:08,318 INFO L93 Difference]: Finished difference Result 74511 states and 128019 transitions. [2021-12-17 15:04:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:04:08,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2021-12-17 15:04:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:08,498 INFO L225 Difference]: With dead ends: 74511 [2021-12-17 15:04:08,498 INFO L226 Difference]: Without dead ends: 49980 [2021-12-17 15:04:08,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:04:08,579 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 871 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:08,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1091 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:04:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49980 states. [2021-12-17 15:04:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49980 to 49900. [2021-12-17 15:04:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49900 states, 41348 states have (on average 1.5914675437747896) internal successors, (65804), 41355 states have internal predecessors, (65804), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-12-17 15:04:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49900 states to 49900 states and 83999 transitions. [2021-12-17 15:04:10,686 INFO L78 Accepts]: Start accepts. Automaton has 49900 states and 83999 transitions. Word has length 126 [2021-12-17 15:04:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:10,686 INFO L470 AbstractCegarLoop]: Abstraction has 49900 states and 83999 transitions. [2021-12-17 15:04:10,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 49900 states and 83999 transitions. [2021-12-17 15:04:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:04:10,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:10,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:10,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 15:04:10,714 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1155240813, now seen corresponding path program 1 times [2021-12-17 15:04:10,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:10,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68595160] [2021-12-17 15:04:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:10,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:04:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 15:04:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:04:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 15:04:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 15:04:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 15:04:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:10,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:10,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68595160] [2021-12-17 15:04:10,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68595160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:10,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:10,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:04:10,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221644320] [2021-12-17 15:04:10,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:10,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:04:10,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:04:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:04:10,806 INFO L87 Difference]: Start difference. First operand 49900 states and 83999 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:13,925 INFO L93 Difference]: Finished difference Result 92997 states and 160150 transitions. [2021-12-17 15:04:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:04:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2021-12-17 15:04:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:14,214 INFO L225 Difference]: With dead ends: 92997 [2021-12-17 15:04:14,214 INFO L226 Difference]: Without dead ends: 92824 [2021-12-17 15:04:14,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:04:14,263 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 875 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:14,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 1082 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:04:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92824 states. [2021-12-17 15:04:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92824 to 92744. [2021-12-17 15:04:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92744 states, 77393 states have (on average 1.5839933844146112) internal successors, (122590), 77400 states have internal predecessors, (122590), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2021-12-17 15:04:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92744 states to 92744 states and 155429 transitions. [2021-12-17 15:04:18,022 INFO L78 Accepts]: Start accepts. Automaton has 92744 states and 155429 transitions. Word has length 127 [2021-12-17 15:04:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:18,023 INFO L470 AbstractCegarLoop]: Abstraction has 92744 states and 155429 transitions. [2021-12-17 15:04:18,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-17 15:04:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 92744 states and 155429 transitions. [2021-12-17 15:04:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 15:04:18,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:18,053 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:18,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 15:04:18,054 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 612044950, now seen corresponding path program 1 times [2021-12-17 15:04:18,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:18,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169327089] [2021-12-17 15:04:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:18,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 15:04:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 15:04:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 15:04:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 15:04:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 15:04:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 15:04:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:18,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169327089] [2021-12-17 15:04:18,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169327089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:18,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:18,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 15:04:18,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153630409] [2021-12-17 15:04:18,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:18,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 15:04:18,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 15:04:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:04:18,220 INFO L87 Difference]: Start difference. First operand 92744 states and 155429 transitions. Second operand has 16 states, 15 states have (on average 5.933333333333334) internal successors, (89), 11 states have internal predecessors, (89), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-17 15:04:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:27,090 INFO L93 Difference]: Finished difference Result 185261 states and 322375 transitions. [2021-12-17 15:04:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-17 15:04:27,090 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.933333333333334) internal successors, (89), 11 states have internal predecessors, (89), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 128 [2021-12-17 15:04:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:27,938 INFO L225 Difference]: With dead ends: 185261 [2021-12-17 15:04:27,938 INFO L226 Difference]: Without dead ends: 185096 [2021-12-17 15:04:28,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1833, Unknown=0, NotChecked=0, Total=2352 [2021-12-17 15:04:28,032 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 3556 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 6640 mSolverCounterSat, 1509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3556 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 8149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1509 IncrementalHoareTripleChecker+Valid, 6640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:28,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3556 Valid, 3364 Invalid, 8149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1509 Valid, 6640 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 15:04:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185096 states.