./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec3_product32.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 f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:51:08,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:51:08,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:51:08,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:51:08,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:51:08,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:51:08,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:51:08,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:51:08,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:51:08,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:51:08,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:51:08,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:51:08,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:51:08,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:51:08,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:51:08,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:51:08,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:51:08,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:51:08,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:51:08,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:51:08,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:51:08,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:51:08,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:51:08,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:51:08,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:51:08,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:51:08,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:51:08,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:51:08,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:51:08,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:51:08,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:51:08,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:51:08,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:51:08,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:51:08,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:51:08,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:51:08,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:51:08,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:51:08,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:51:08,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:51:08,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:51:08,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:51:08,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:51:08,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:51:08,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:51:08,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:51:08,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:51:08,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:51:08,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:51:08,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:51:08,455 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:51:08,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:51:08,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:51:08,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:51:08,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:51:08,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:51:08,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:51:08,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:51:08,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:51:08,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:51:08,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:51:08,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:51:08,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:51:08,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:51:08,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:51:08,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:51:08,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:51:08,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:51:08,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:51:08,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:51:08,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:51:08,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:51:08,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:51:08,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:51:08,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:51:08,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:51:08,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2021-12-16 00:51:08,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:51:08,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:51:08,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:51:08,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:51:08,684 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:51:08,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-12-16 00:51:08,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63117f6bf/3997775897e24ccea00d1895b9e687c1/FLAGf9b1c8273 [2021-12-16 00:51:09,263 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:51:09,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-12-16 00:51:09,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63117f6bf/3997775897e24ccea00d1895b9e687c1/FLAGf9b1c8273 [2021-12-16 00:51:09,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63117f6bf/3997775897e24ccea00d1895b9e687c1 [2021-12-16 00:51:09,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:51:09,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:51:09,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:51:09,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:51:09,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:51:09,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:51:09" (1/1) ... [2021-12-16 00:51:09,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce0e2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:09, skipping insertion in model container [2021-12-16 00:51:09,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:51:09" (1/1) ... [2021-12-16 00:51:09,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:51:09,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:51:10,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-12-16 00:51:10,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:51:10,356 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:51:10,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2021-12-16 00:51:10,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:51:10,449 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:51:10,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10 WrapperNode [2021-12-16 00:51:10,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:51:10,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:51:10,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:51:10,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:51:10,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,520 INFO L137 Inliner]: procedures = 135, calls = 246, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 1019 [2021-12-16 00:51:10,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:51:10,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:51:10,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:51:10,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:51:10,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:51:10,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:51:10,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:51:10,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:51:10,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (1/1) ... [2021-12-16 00:51:10,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:51:10,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:10,585 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) [2021-12-16 00:51:10,588 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 [2021-12-16 00:51:10,620 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-16 00:51:10,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-16 00:51:10,621 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-16 00:51:10,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-16 00:51:10,621 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-16 00:51:10,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-16 00:51:10,621 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-16 00:51:10,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-16 00:51:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-16 00:51:10,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-16 00:51:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-16 00:51:10,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-16 00:51:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-16 00:51:10,623 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-16 00:51:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-16 00:51:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-16 00:51:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-16 00:51:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-16 00:51:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-16 00:51:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-16 00:51:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-16 00:51:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-16 00:51:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-16 00:51:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-16 00:51:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-16 00:51:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-16 00:51:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-16 00:51:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-16 00:51:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-16 00:51:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-16 00:51:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-16 00:51:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:51:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-16 00:51:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-16 00:51:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-16 00:51:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-16 00:51:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-16 00:51:10,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-16 00:51:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-16 00:51:10,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-16 00:51:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-16 00:51:10,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-16 00:51:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-16 00:51:10,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-16 00:51:10,628 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-16 00:51:10,628 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-16 00:51:10,628 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-16 00:51:10,628 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-16 00:51:10,628 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-16 00:51:10,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-16 00:51:10,628 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-16 00:51:10,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-16 00:51:10,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-16 00:51:10,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-16 00:51:10,630 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-16 00:51:10,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-16 00:51:10,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:51:10,631 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-16 00:51:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-16 00:51:10,631 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-16 00:51:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-16 00:51:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:51:10,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:51:10,833 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:51:10,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:51:11,333 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:51:11,342 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:51:11,342 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:51:11,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:51:11 BoogieIcfgContainer [2021-12-16 00:51:11,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:51:11,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:51:11,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:51:11,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:51:11,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:51:09" (1/3) ... [2021-12-16 00:51:11,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8f65d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:51:11, skipping insertion in model container [2021-12-16 00:51:11,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:51:10" (2/3) ... [2021-12-16 00:51:11,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8f65d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:51:11, skipping insertion in model container [2021-12-16 00:51:11,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:51:11" (3/3) ... [2021-12-16 00:51:11,349 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2021-12-16 00:51:11,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:51:11,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:51:11,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:51:11,396 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 [2021-12-16 00:51:11,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:51:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 335 states have (on average 1.5462686567164179) internal successors, (518), 342 states have internal predecessors, (518), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-16 00:51:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-16 00:51:11,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:11,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:11,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:11,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:11,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2090905474, now seen corresponding path program 1 times [2021-12-16 00:51:11,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271645216] [2021-12-16 00:51:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:11,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:51:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:51:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:51:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:51:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 00:51:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:51:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:51:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:51:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:51:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:51:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:51:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:51:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:51:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:51:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:51:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:51:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 00:51:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-16 00:51:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-16 00:51:11,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:11,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271645216] [2021-12-16 00:51:11,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271645216] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:51:11,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804920062] [2021-12-16 00:51:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:11,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:51:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:11,921 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) [2021-12-16 00:51:11,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:51:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:12,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:51:12,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:51:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-16 00:51:12,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:51:12,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804920062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:12,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:51:12,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-16 00:51:12,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117990086] [2021-12-16 00:51:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:12,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:51:12,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:51:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:51:12,546 INFO L87 Difference]: Start difference. First operand has 436 states, 335 states have (on average 1.5462686567164179) internal successors, (518), 342 states have internal predecessors, (518), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 00:51:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:12,624 INFO L93 Difference]: Finished difference Result 678 states and 1006 transitions. [2021-12-16 00:51:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:51:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2021-12-16 00:51:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:12,641 INFO L225 Difference]: With dead ends: 678 [2021-12-16 00:51:12,645 INFO L226 Difference]: Without dead ends: 428 [2021-12-16 00:51:12,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:51:12,655 INFO L933 BasicCegarLoop]: 652 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, 652 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 [2021-12-16 00:51:12,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:51:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-12-16 00:51:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-12-16 00:51:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 329 states have (on average 1.541033434650456) internal successors, (507), 334 states have internal predecessors, (507), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-16 00:51:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 644 transitions. [2021-12-16 00:51:12,710 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 644 transitions. Word has length 158 [2021-12-16 00:51:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:12,712 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 644 transitions. [2021-12-16 00:51:12,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 00:51:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 644 transitions. [2021-12-16 00:51:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 00:51:12,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:12,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:12,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 00:51:12,934 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 [2021-12-16 00:51:12,934 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash -203425603, now seen corresponding path program 1 times [2021-12-16 00:51:12,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881089305] [2021-12-16 00:51:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:12,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:51:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:51:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:51:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:51:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 00:51:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:51:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:51:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:51:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:51:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:51:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:51:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:51:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:51:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:51:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:51:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-16 00:51:13,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:13,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881089305] [2021-12-16 00:51:13,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881089305] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:51:13,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139497398] [2021-12-16 00:51:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:13,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:51:13,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:13,071 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) [2021-12-16 00:51:13,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:51:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:51:13,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:51:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 00:51:13,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:51:13,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139497398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:13,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:51:13,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:51:13,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206857458] [2021-12-16 00:51:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:13,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:51:13,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:51:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:51:13,513 INFO L87 Difference]: Start difference. First operand 428 states and 644 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:13,537 INFO L93 Difference]: Finished difference Result 667 states and 980 transitions. [2021-12-16 00:51:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:51:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2021-12-16 00:51:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:13,541 INFO L225 Difference]: With dead ends: 667 [2021-12-16 00:51:13,541 INFO L226 Difference]: Without dead ends: 431 [2021-12-16 00:51:13,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:51:13,543 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1282 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 [2021-12-16 00:51:13,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1282 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:51:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-16 00:51:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 430. [2021-12-16 00:51:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 331 states have (on average 1.5377643504531722) internal successors, (509), 336 states have internal predecessors, (509), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-16 00:51:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 646 transitions. [2021-12-16 00:51:13,562 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 646 transitions. Word has length 140 [2021-12-16 00:51:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:13,563 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 646 transitions. [2021-12-16 00:51:13,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 646 transitions. [2021-12-16 00:51:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 00:51:13,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:13,575 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:13,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:51:13,783 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 [2021-12-16 00:51:13,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash 267895932, now seen corresponding path program 1 times [2021-12-16 00:51:13,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:13,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783449946] [2021-12-16 00:51:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:13,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:51:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:51:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:51:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:51:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:51:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:51:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:51:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:51:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:51:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:51:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:51:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:51:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:51:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:51:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 00:51:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-16 00:51:14,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783449946] [2021-12-16 00:51:14,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783449946] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:51:14,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670276596] [2021-12-16 00:51:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:14,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:51:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:14,077 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) [2021-12-16 00:51:14,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 00:51:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:51:14,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:51:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 00:51:14,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:51:14,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670276596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:14,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:51:14,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:51:14,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003601281] [2021-12-16 00:51:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:14,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:51:14,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:51:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:51:14,502 INFO L87 Difference]: Start difference. First operand 430 states and 646 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:14,552 INFO L93 Difference]: Finished difference Result 908 states and 1384 transitions. [2021-12-16 00:51:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:51:14,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2021-12-16 00:51:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:14,556 INFO L225 Difference]: With dead ends: 908 [2021-12-16 00:51:14,556 INFO L226 Difference]: Without dead ends: 505 [2021-12-16 00:51:14,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:51:14,558 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 134 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1268 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 [2021-12-16 00:51:14,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1268 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:51:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-16 00:51:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 497. [2021-12-16 00:51:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 384 states have (on average 1.5572916666666667) internal successors, (598), 389 states have internal predecessors, (598), 84 states have call successors, (84), 29 states have call predecessors, (84), 28 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2021-12-16 00:51:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 763 transitions. [2021-12-16 00:51:14,584 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 763 transitions. Word has length 149 [2021-12-16 00:51:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:14,585 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 763 transitions. [2021-12-16 00:51:14,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 763 transitions. [2021-12-16 00:51:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-16 00:51:14,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:14,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:14,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 00:51:14,801 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 [2021-12-16 00:51:14,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash -490279062, now seen corresponding path program 1 times [2021-12-16 00:51:14,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:14,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571957111] [2021-12-16 00:51:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:14,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:51:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:51:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:51:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:51:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:51:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:51:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:51:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:51:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:51:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:51:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:51:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:51:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:51:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:51:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 00:51:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-16 00:51:14,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:14,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571957111] [2021-12-16 00:51:14,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571957111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:51:14,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722111228] [2021-12-16 00:51:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:14,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:51:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:14,936 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) [2021-12-16 00:51:14,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 00:51:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 00:51:15,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:51:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 00:51:15,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:51:15,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722111228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:15,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:51:15,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-16 00:51:15,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743179877] [2021-12-16 00:51:15,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:15,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:51:15,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:51:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:51:15,424 INFO L87 Difference]: Start difference. First operand 497 states and 763 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 00:51:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:15,479 INFO L93 Difference]: Finished difference Result 985 states and 1516 transitions. [2021-12-16 00:51:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:51:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 150 [2021-12-16 00:51:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:15,484 INFO L225 Difference]: With dead ends: 985 [2021-12-16 00:51:15,484 INFO L226 Difference]: Without dead ends: 499 [2021-12-16 00:51:15,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:15,488 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 152 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2366 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 [2021-12-16 00:51:15,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2366 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:51:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-16 00:51:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-12-16 00:51:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 385 states have (on average 1.5558441558441558) internal successors, (599), 391 states have internal predecessors, (599), 84 states have call successors, (84), 29 states have call predecessors, (84), 29 states have return successors, (83), 80 states have call predecessors, (83), 81 states have call successors, (83) [2021-12-16 00:51:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 766 transitions. [2021-12-16 00:51:15,528 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 766 transitions. Word has length 150 [2021-12-16 00:51:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:15,528 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 766 transitions. [2021-12-16 00:51:15,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 00:51:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 766 transitions. [2021-12-16 00:51:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-16 00:51:15,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:15,532 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:15,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-16 00:51:15,751 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 [2021-12-16 00:51:15,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1459855946, now seen corresponding path program 1 times [2021-12-16 00:51:15,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:15,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351280702] [2021-12-16 00:51:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:15,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:51:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:51:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:51:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:51:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:51:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:51:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:51:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:51:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:51:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:51:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:51:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:51:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 00:51:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 00:51:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 00:51:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-16 00:51:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 00:51:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:15,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:15,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351280702] [2021-12-16 00:51:15,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351280702] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:51:15,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074905366] [2021-12-16 00:51:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:15,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:51:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:15,924 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) [2021-12-16 00:51:15,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 00:51:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:51:16,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:51:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:51:16,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:51:16,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074905366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:16,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:51:16,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-16 00:51:16,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480968327] [2021-12-16 00:51:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:16,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:51:16,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:16,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:51:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:51:16,429 INFO L87 Difference]: Start difference. First operand 499 states and 766 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 00:51:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:16,479 INFO L93 Difference]: Finished difference Result 987 states and 1521 transitions. [2021-12-16 00:51:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:51:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 170 [2021-12-16 00:51:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:16,482 INFO L225 Difference]: With dead ends: 987 [2021-12-16 00:51:16,482 INFO L226 Difference]: Without dead ends: 501 [2021-12-16 00:51:16,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:51:16,484 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 151 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2355 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 [2021-12-16 00:51:16,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2355 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:51:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-16 00:51:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2021-12-16 00:51:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 386 states have (on average 1.5544041450777202) internal successors, (600), 393 states have internal predecessors, (600), 84 states have call successors, (84), 29 states have call predecessors, (84), 30 states have return successors, (88), 80 states have call predecessors, (88), 81 states have call successors, (88) [2021-12-16 00:51:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 772 transitions. [2021-12-16 00:51:16,499 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 772 transitions. Word has length 170 [2021-12-16 00:51:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:16,499 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 772 transitions. [2021-12-16 00:51:16,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 00:51:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 772 transitions. [2021-12-16 00:51:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-16 00:51:16,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:16,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:16,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 00:51:16,739 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 [2021-12-16 00:51:16,739 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash -162534071, now seen corresponding path program 1 times [2021-12-16 00:51:16,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:16,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245550849] [2021-12-16 00:51:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:16,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:51:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:51:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:51:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:51:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:51:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:51:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:51:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:51:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:51:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:51:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:51:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:51:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 00:51:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-16 00:51:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-16 00:51:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-16 00:51:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-16 00:51:16,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:16,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245550849] [2021-12-16 00:51:16,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245550849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:16,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:16,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:51:16,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887706366] [2021-12-16 00:51:16,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:16,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:51:16,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:16,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:51:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:51:16,891 INFO L87 Difference]: Start difference. First operand 501 states and 772 transitions. Second operand has 9 states, 8 states have (on average 12.25) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 00:51:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:18,516 INFO L93 Difference]: Finished difference Result 1121 states and 1750 transitions. [2021-12-16 00:51:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:51:18,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.25) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 171 [2021-12-16 00:51:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:18,520 INFO L225 Difference]: With dead ends: 1121 [2021-12-16 00:51:18,520 INFO L226 Difference]: Without dead ends: 643 [2021-12-16 00:51:18,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:51:18,522 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1581 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:18,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 1993 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 00:51:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-16 00:51:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 501. [2021-12-16 00:51:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 386 states have (on average 1.5544041450777202) internal successors, (600), 393 states have internal predecessors, (600), 84 states have call successors, (84), 29 states have call predecessors, (84), 30 states have return successors, (87), 80 states have call predecessors, (87), 81 states have call successors, (87) [2021-12-16 00:51:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 771 transitions. [2021-12-16 00:51:18,574 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 771 transitions. Word has length 171 [2021-12-16 00:51:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:18,574 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 771 transitions. [2021-12-16 00:51:18,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.25) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 00:51:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 771 transitions. [2021-12-16 00:51:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-16 00:51:18,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:18,577 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:18,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:51:18,577 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:18,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:18,577 INFO L85 PathProgramCache]: Analyzing trace with hash -682164201, now seen corresponding path program 1 times [2021-12-16 00:51:18,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:18,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870888642] [2021-12-16 00:51:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:18,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:51:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:51:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:51:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:51:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:51:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:51:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:51:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:51:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:51:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:51:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:51:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 00:51:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 00:51:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-16 00:51:18,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870888642] [2021-12-16 00:51:18,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870888642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:18,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:18,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:51:18,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452876651] [2021-12-16 00:51:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:18,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:51:18,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:51:18,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:51:18,752 INFO L87 Difference]: Start difference. First operand 501 states and 771 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 00:51:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:20,359 INFO L93 Difference]: Finished difference Result 1123 states and 1753 transitions. [2021-12-16 00:51:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:51:20,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 153 [2021-12-16 00:51:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:20,363 INFO L225 Difference]: With dead ends: 1123 [2021-12-16 00:51:20,363 INFO L226 Difference]: Without dead ends: 645 [2021-12-16 00:51:20,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:51:20,365 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1575 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:20,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 1999 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 00:51:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-16 00:51:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 503. [2021-12-16 00:51:20,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 387 states have (on average 1.5529715762273901) internal successors, (601), 395 states have internal predecessors, (601), 84 states have call successors, (84), 29 states have call predecessors, (84), 31 states have return successors, (89), 80 states have call predecessors, (89), 81 states have call successors, (89) [2021-12-16 00:51:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 774 transitions. [2021-12-16 00:51:20,388 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 774 transitions. Word has length 153 [2021-12-16 00:51:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:20,389 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 774 transitions. [2021-12-16 00:51:20,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 00:51:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 774 transitions. [2021-12-16 00:51:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-16 00:51:20,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:20,391 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:20,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:51:20,391 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash -487176677, now seen corresponding path program 1 times [2021-12-16 00:51:20,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:20,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374145152] [2021-12-16 00:51:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:20,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:51:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:51:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:51:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:51:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:51:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:51:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:51:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:51:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:51:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:51:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 00:51:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 00:51:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-16 00:51:20,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:20,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374145152] [2021-12-16 00:51:20,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374145152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:20,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:20,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:51:20,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343775932] [2021-12-16 00:51:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:20,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:51:20,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:51:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:51:20,511 INFO L87 Difference]: Start difference. First operand 503 states and 774 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 00:51:22,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:22,680 INFO L93 Difference]: Finished difference Result 1121 states and 1748 transitions. [2021-12-16 00:51:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:51:22,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 154 [2021-12-16 00:51:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:22,683 INFO L225 Difference]: With dead ends: 1121 [2021-12-16 00:51:22,684 INFO L226 Difference]: Without dead ends: 645 [2021-12-16 00:51:22,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:51:22,685 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1712 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 3816 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 4487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 3816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:22,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 2613 Invalid, 4487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 3816 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 00:51:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-16 00:51:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 503. [2021-12-16 00:51:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 387 states have (on average 1.5529715762273901) internal successors, (601), 395 states have internal predecessors, (601), 84 states have call successors, (84), 29 states have call predecessors, (84), 31 states have return successors, (88), 80 states have call predecessors, (88), 81 states have call successors, (88) [2021-12-16 00:51:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 773 transitions. [2021-12-16 00:51:22,705 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 773 transitions. Word has length 154 [2021-12-16 00:51:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:22,705 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 773 transitions. [2021-12-16 00:51:22,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 00:51:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 773 transitions. [2021-12-16 00:51:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 00:51:22,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:22,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:22,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:51:22,708 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -841964714, now seen corresponding path program 2 times [2021-12-16 00:51:22,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:22,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793369846] [2021-12-16 00:51:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:22,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:51:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:51:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:51:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:51:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:51:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:51:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:51:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:51:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:51:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:51:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 00:51:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 00:51:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-16 00:51:22,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793369846] [2021-12-16 00:51:22,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793369846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:22,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:22,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:51:22,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247994684] [2021-12-16 00:51:22,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:22,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:51:22,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:51:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:51:22,843 INFO L87 Difference]: Start difference. First operand 503 states and 773 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 00:51:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:24,986 INFO L93 Difference]: Finished difference Result 1123 states and 1754 transitions. [2021-12-16 00:51:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:51:24,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 155 [2021-12-16 00:51:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:24,989 INFO L225 Difference]: With dead ends: 1123 [2021-12-16 00:51:24,989 INFO L226 Difference]: Without dead ends: 647 [2021-12-16 00:51:24,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:51:24,991 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1705 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:24,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 2623 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 00:51:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-16 00:51:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 505. [2021-12-16 00:51:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 388 states have (on average 1.5515463917525774) internal successors, (602), 397 states have internal predecessors, (602), 84 states have call successors, (84), 29 states have call predecessors, (84), 32 states have return successors, (93), 80 states have call predecessors, (93), 81 states have call successors, (93) [2021-12-16 00:51:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 779 transitions. [2021-12-16 00:51:25,011 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 779 transitions. Word has length 155 [2021-12-16 00:51:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:25,011 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 779 transitions. [2021-12-16 00:51:25,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 00:51:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 779 transitions. [2021-12-16 00:51:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-16 00:51:25,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:25,013 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:25,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:51:25,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash -778011437, now seen corresponding path program 1 times [2021-12-16 00:51:25,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:25,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190371700] [2021-12-16 00:51:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:25,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:51:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:51:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:51:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:51:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:51:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:51:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:51:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:51:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:51:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 00:51:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 00:51:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 00:51:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-16 00:51:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 00:51:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-16 00:51:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-16 00:51:25,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190371700] [2021-12-16 00:51:25,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190371700] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:51:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75933301] [2021-12-16 00:51:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:25,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:51:25,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:51:25,144 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) [2021-12-16 00:51:25,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 00:51:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:25,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:51:25,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:51:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 00:51:25,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:51:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 00:51:25,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75933301] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:51:25,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:51:25,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-16 00:51:25,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131089084] [2021-12-16 00:51:25,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:51:25,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 00:51:25,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 00:51:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:51:25,923 INFO L87 Difference]: Start difference. First operand 505 states and 779 transitions. Second operand has 15 states, 14 states have (on average 12.0) internal successors, (168), 11 states have internal predecessors, (168), 4 states have call successors, (50), 6 states have call predecessors, (50), 3 states have return successors, (40), 3 states have call predecessors, (40), 4 states have call successors, (40) [2021-12-16 00:51:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:29,434 INFO L93 Difference]: Finished difference Result 1982 states and 3312 transitions. [2021-12-16 00:51:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 00:51:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 12.0) internal successors, (168), 11 states have internal predecessors, (168), 4 states have call successors, (50), 6 states have call predecessors, (50), 3 states have return successors, (40), 3 states have call predecessors, (40), 4 states have call successors, (40) Word has length 175 [2021-12-16 00:51:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:29,441 INFO L225 Difference]: With dead ends: 1982 [2021-12-16 00:51:29,441 INFO L226 Difference]: Without dead ends: 1508 [2021-12-16 00:51:29,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-16 00:51:29,444 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 3623 mSDsluCounter, 3808 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 1495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 6942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1495 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:29,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3625 Valid, 4715 Invalid, 6942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1495 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-16 00:51:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-12-16 00:51:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 923. [2021-12-16 00:51:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 727 states have (on average 1.6066024759284732) internal successors, (1168), 736 states have internal predecessors, (1168), 163 states have call successors, (163), 29 states have call predecessors, (163), 32 states have return successors, (182), 159 states have call predecessors, (182), 160 states have call successors, (182) [2021-12-16 00:51:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1513 transitions. [2021-12-16 00:51:29,483 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1513 transitions. Word has length 175 [2021-12-16 00:51:29,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:29,484 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 1513 transitions. [2021-12-16 00:51:29,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 12.0) internal successors, (168), 11 states have internal predecessors, (168), 4 states have call successors, (50), 6 states have call predecessors, (50), 3 states have return successors, (40), 3 states have call predecessors, (40), 4 states have call successors, (40) [2021-12-16 00:51:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1513 transitions. [2021-12-16 00:51:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-16 00:51:29,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:29,488 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:29,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 00:51:29,727 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 [2021-12-16 00:51:29,728 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:29,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash -349752768, now seen corresponding path program 1 times [2021-12-16 00:51:29,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:29,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548518102] [2021-12-16 00:51:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:29,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:51:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:51:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:51:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:51:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:51:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:51:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:51:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:51:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:51:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:51:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 00:51:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-16 00:51:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-16 00:51:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-16 00:51:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-16 00:51:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 00:51:29,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:29,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548518102] [2021-12-16 00:51:29,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548518102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:29,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:29,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:29,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108788022] [2021-12-16 00:51:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:29,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:29,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:29,873 INFO L87 Difference]: Start difference. First operand 923 states and 1513 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 00:51:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:31,178 INFO L93 Difference]: Finished difference Result 2308 states and 3880 transitions. [2021-12-16 00:51:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:31,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2021-12-16 00:51:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:31,186 INFO L225 Difference]: With dead ends: 2308 [2021-12-16 00:51:31,187 INFO L226 Difference]: Without dead ends: 1463 [2021-12-16 00:51:31,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:31,190 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1568 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:31,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 1686 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:51:31,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-12-16 00:51:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1313. [2021-12-16 00:51:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1038 states have (on average 1.6262042389210019) internal successors, (1688), 1047 states have internal predecessors, (1688), 242 states have call successors, (242), 29 states have call predecessors, (242), 32 states have return successors, (271), 238 states have call predecessors, (271), 239 states have call successors, (271) [2021-12-16 00:51:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2201 transitions. [2021-12-16 00:51:31,272 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2201 transitions. Word has length 178 [2021-12-16 00:51:31,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:31,272 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 2201 transitions. [2021-12-16 00:51:31,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 00:51:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2201 transitions. [2021-12-16 00:51:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-16 00:51:31,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:31,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:31,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:51:31,278 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1186620882, now seen corresponding path program 1 times [2021-12-16 00:51:31,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:31,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147413734] [2021-12-16 00:51:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:31,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:51:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:51:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:51:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:51:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:51:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:51:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:51:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:51:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:51:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 00:51:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 00:51:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-16 00:51:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:31,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:31,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147413734] [2021-12-16 00:51:31,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147413734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:31,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:31,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:31,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141352491] [2021-12-16 00:51:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:31,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:31,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:31,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:31,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:31,401 INFO L87 Difference]: Start difference. First operand 1313 states and 2201 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:32,838 INFO L93 Difference]: Finished difference Result 3282 states and 5589 transitions. [2021-12-16 00:51:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:32,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2021-12-16 00:51:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:32,847 INFO L225 Difference]: With dead ends: 3282 [2021-12-16 00:51:32,848 INFO L226 Difference]: Without dead ends: 2100 [2021-12-16 00:51:32,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:32,851 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1566 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:32,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1629 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:51:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-12-16 00:51:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1950. [2021-12-16 00:51:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1556 states have (on average 1.6362467866323906) internal successors, (2546), 1565 states have internal predecessors, (2546), 361 states have call successors, (361), 29 states have call predecessors, (361), 32 states have return successors, (390), 357 states have call predecessors, (390), 358 states have call successors, (390) [2021-12-16 00:51:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3297 transitions. [2021-12-16 00:51:32,930 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3297 transitions. Word has length 160 [2021-12-16 00:51:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:32,931 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 3297 transitions. [2021-12-16 00:51:32,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3297 transitions. [2021-12-16 00:51:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-16 00:51:32,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:32,939 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:32,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:51:32,940 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1787350665, now seen corresponding path program 1 times [2021-12-16 00:51:32,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:32,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31895209] [2021-12-16 00:51:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:32,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:51:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:51:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:51:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:51:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:51:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:51:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:51:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:51:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:51:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 00:51:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 00:51:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-16 00:51:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:33,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:33,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31895209] [2021-12-16 00:51:33,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31895209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:33,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:33,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:33,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375339028] [2021-12-16 00:51:33,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:33,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:33,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:33,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:33,028 INFO L87 Difference]: Start difference. First operand 1950 states and 3297 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:34,394 INFO L93 Difference]: Finished difference Result 4762 states and 8200 transitions. [2021-12-16 00:51:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2021-12-16 00:51:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:34,407 INFO L225 Difference]: With dead ends: 4762 [2021-12-16 00:51:34,408 INFO L226 Difference]: Without dead ends: 3078 [2021-12-16 00:51:34,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:34,443 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 1564 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:34,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 1625 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:51:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-12-16 00:51:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2928. [2021-12-16 00:51:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2372 states have (on average 1.6441821247892074) internal successors, (3900), 2381 states have internal predecessors, (3900), 523 states have call successors, (523), 29 states have call predecessors, (523), 32 states have return successors, (568), 519 states have call predecessors, (568), 520 states have call successors, (568) [2021-12-16 00:51:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4991 transitions. [2021-12-16 00:51:34,590 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4991 transitions. Word has length 161 [2021-12-16 00:51:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:34,591 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4991 transitions. [2021-12-16 00:51:34,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4991 transitions. [2021-12-16 00:51:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-16 00:51:34,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:34,608 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:34,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:51:34,608 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1664558125, now seen corresponding path program 1 times [2021-12-16 00:51:34,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:34,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074386441] [2021-12-16 00:51:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:34,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:51:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:51:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:51:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:51:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:51:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:51:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:51:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:51:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 00:51:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 00:51:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-16 00:51:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 00:51:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:34,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:34,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074386441] [2021-12-16 00:51:34,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074386441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:34,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:34,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:34,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967223694] [2021-12-16 00:51:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:34,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:34,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:34,729 INFO L87 Difference]: Start difference. First operand 2928 states and 4991 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:36,147 INFO L93 Difference]: Finished difference Result 7101 states and 12335 transitions. [2021-12-16 00:51:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2021-12-16 00:51:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:36,205 INFO L225 Difference]: With dead ends: 7101 [2021-12-16 00:51:36,205 INFO L226 Difference]: Without dead ends: 4658 [2021-12-16 00:51:36,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:36,212 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 1563 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:36,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 1627 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:51:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-16 00:51:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4508. [2021-12-16 00:51:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 3707 states have (on average 1.6498516320474776) internal successors, (6116), 3716 states have internal predecessors, (6116), 768 states have call successors, (768), 29 states have call predecessors, (768), 32 states have return successors, (839), 764 states have call predecessors, (839), 765 states have call successors, (839) [2021-12-16 00:51:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 7723 transitions. [2021-12-16 00:51:36,375 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 7723 transitions. Word has length 162 [2021-12-16 00:51:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:36,376 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 7723 transitions. [2021-12-16 00:51:36,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 7723 transitions. [2021-12-16 00:51:36,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 00:51:36,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:36,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:36,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:51:36,393 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:36,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:36,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1107801619, now seen corresponding path program 1 times [2021-12-16 00:51:36,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:36,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496056293] [2021-12-16 00:51:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:36,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:51:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:51:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:51:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:51:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:51:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:51:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:51:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:51:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 00:51:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 00:51:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-16 00:51:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-16 00:51:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:36,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496056293] [2021-12-16 00:51:36,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496056293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:36,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:36,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:36,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738558282] [2021-12-16 00:51:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:36,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:36,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:36,493 INFO L87 Difference]: Start difference. First operand 4508 states and 7723 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:37,960 INFO L93 Difference]: Finished difference Result 11272 states and 19664 transitions. [2021-12-16 00:51:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2021-12-16 00:51:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:38,012 INFO L225 Difference]: With dead ends: 11272 [2021-12-16 00:51:38,017 INFO L226 Difference]: Without dead ends: 7501 [2021-12-16 00:51:38,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:38,030 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 1562 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:38,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1581 Valid, 1643 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:51:38,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-12-16 00:51:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7351. [2021-12-16 00:51:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 6057 states have (on average 1.6468548786527983) internal successors, (9975), 6066 states have internal predecessors, (9975), 1261 states have call successors, (1261), 29 states have call predecessors, (1261), 32 states have return successors, (1376), 1257 states have call predecessors, (1376), 1258 states have call successors, (1376) [2021-12-16 00:51:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 12612 transitions. [2021-12-16 00:51:38,409 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 12612 transitions. Word has length 163 [2021-12-16 00:51:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:38,409 INFO L470 AbstractCegarLoop]: Abstraction has 7351 states and 12612 transitions. [2021-12-16 00:51:38,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 12612 transitions. [2021-12-16 00:51:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-16 00:51:38,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:38,442 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:38,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:51:38,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1672435511, now seen corresponding path program 1 times [2021-12-16 00:51:38,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:38,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619057497] [2021-12-16 00:51:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:38,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:51:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:51:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:51:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:51:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:51:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:51:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:51:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:51:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:51:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 00:51:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-16 00:51:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-16 00:51:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:38,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619057497] [2021-12-16 00:51:38,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619057497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:38,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:38,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:38,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367047753] [2021-12-16 00:51:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:38,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:38,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:38,526 INFO L87 Difference]: Start difference. First operand 7351 states and 12612 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:40,342 INFO L93 Difference]: Finished difference Result 18692 states and 32628 transitions. [2021-12-16 00:51:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:40,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-12-16 00:51:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:40,411 INFO L225 Difference]: With dead ends: 18692 [2021-12-16 00:51:40,412 INFO L226 Difference]: Without dead ends: 12480 [2021-12-16 00:51:40,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:40,431 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1557 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:40,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 1635 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 00:51:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2021-12-16 00:51:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 12330. [2021-12-16 00:51:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12330 states, 10214 states have (on average 1.647346778930879) internal successors, (16826), 10223 states have internal predecessors, (16826), 2083 states have call successors, (2083), 29 states have call predecessors, (2083), 32 states have return successors, (2276), 2079 states have call predecessors, (2276), 2080 states have call successors, (2276) [2021-12-16 00:51:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12330 states to 12330 states and 21185 transitions. [2021-12-16 00:51:40,996 INFO L78 Accepts]: Start accepts. Automaton has 12330 states and 21185 transitions. Word has length 164 [2021-12-16 00:51:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:40,997 INFO L470 AbstractCegarLoop]: Abstraction has 12330 states and 21185 transitions. [2021-12-16 00:51:40,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 12330 states and 21185 transitions. [2021-12-16 00:51:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-16 00:51:41,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:41,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:41,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:51:41,030 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash -6959371, now seen corresponding path program 1 times [2021-12-16 00:51:41,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:41,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668870460] [2021-12-16 00:51:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:41,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:51:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:51:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:51:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:51:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:51:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:51:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:51:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:51:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:51:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 00:51:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 00:51:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-16 00:51:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:41,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668870460] [2021-12-16 00:51:41,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668870460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:41,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:41,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:41,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96973597] [2021-12-16 00:51:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:41,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:41,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:41,134 INFO L87 Difference]: Start difference. First operand 12330 states and 21185 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:42,884 INFO L93 Difference]: Finished difference Result 29650 states and 51488 transitions. [2021-12-16 00:51:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2021-12-16 00:51:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:42,949 INFO L225 Difference]: With dead ends: 29650 [2021-12-16 00:51:42,949 INFO L226 Difference]: Without dead ends: 19433 [2021-12-16 00:51:42,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:42,981 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1558 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:42,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 1606 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:51:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2021-12-16 00:51:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19283. [2021-12-16 00:51:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19283 states, 15964 states have (on average 1.6221498371335505) internal successors, (25896), 15973 states have internal predecessors, (25896), 3286 states have call successors, (3286), 29 states have call predecessors, (3286), 32 states have return successors, (3623), 3282 states have call predecessors, (3623), 3283 states have call successors, (3623) [2021-12-16 00:51:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19283 states to 19283 states and 32805 transitions. [2021-12-16 00:51:43,901 INFO L78 Accepts]: Start accepts. Automaton has 19283 states and 32805 transitions. Word has length 165 [2021-12-16 00:51:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:43,902 INFO L470 AbstractCegarLoop]: Abstraction has 19283 states and 32805 transitions. [2021-12-16 00:51:43,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 19283 states and 32805 transitions. [2021-12-16 00:51:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-16 00:51:43,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:43,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:43,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 00:51:43,979 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:43,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash 918650769, now seen corresponding path program 1 times [2021-12-16 00:51:43,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:43,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434224836] [2021-12-16 00:51:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:43,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:51:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:51:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:51:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:51:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:51:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:51:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:51:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:51:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:51:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 00:51:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-16 00:51:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-16 00:51:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 00:51:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-16 00:51:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 00:51:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 00:51:44,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:44,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434224836] [2021-12-16 00:51:44,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434224836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:44,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:44,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:44,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776688095] [2021-12-16 00:51:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:44,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:44,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:44,066 INFO L87 Difference]: Start difference. First operand 19283 states and 32805 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 00:51:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:46,571 INFO L93 Difference]: Finished difference Result 51082 states and 88406 transitions. [2021-12-16 00:51:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:46,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2021-12-16 00:51:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:46,713 INFO L225 Difference]: With dead ends: 51082 [2021-12-16 00:51:46,713 INFO L226 Difference]: Without dead ends: 34554 [2021-12-16 00:51:46,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:46,755 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1556 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:46,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 1630 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:51:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34554 states. [2021-12-16 00:51:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34554 to 34404. [2021-12-16 00:51:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34404 states, 28635 states have (on average 1.6190675746464118) internal successors, (46362), 28644 states have internal predecessors, (46362), 5736 states have call successors, (5736), 29 states have call predecessors, (5736), 32 states have return successors, (6347), 5732 states have call predecessors, (6347), 5733 states have call successors, (6347) [2021-12-16 00:51:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34404 states to 34404 states and 58445 transitions. [2021-12-16 00:51:48,445 INFO L78 Accepts]: Start accepts. Automaton has 34404 states and 58445 transitions. Word has length 185 [2021-12-16 00:51:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:48,446 INFO L470 AbstractCegarLoop]: Abstraction has 34404 states and 58445 transitions. [2021-12-16 00:51:48,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 00:51:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 34404 states and 58445 transitions. [2021-12-16 00:51:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-16 00:51:48,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:48,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:48,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 00:51:48,493 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1358509329, now seen corresponding path program 1 times [2021-12-16 00:51:48,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:48,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264210816] [2021-12-16 00:51:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:48,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:51:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:51:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:51:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:51:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:51:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:51:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:51:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:51:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 00:51:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 00:51:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-16 00:51:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-16 00:51:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:48,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:48,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264210816] [2021-12-16 00:51:48,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264210816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:48,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:48,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:48,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196760323] [2021-12-16 00:51:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:48,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:48,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:48,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:48,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:48,734 INFO L87 Difference]: Start difference. First operand 34404 states and 58445 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:51:52,246 INFO L93 Difference]: Finished difference Result 93954 states and 161805 transitions. [2021-12-16 00:51:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:51:52,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2021-12-16 00:51:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:51:52,487 INFO L225 Difference]: With dead ends: 93954 [2021-12-16 00:51:52,488 INFO L226 Difference]: Without dead ends: 63221 [2021-12-16 00:51:52,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:51:52,565 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 1551 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:51:52,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 1638 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 00:51:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63221 states. [2021-12-16 00:51:55,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63221 to 63071. [2021-12-16 00:51:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63071 states, 52789 states have (on average 1.6148629449317093) internal successors, (85247), 52798 states have internal predecessors, (85247), 10249 states have call successors, (10249), 29 states have call predecessors, (10249), 32 states have return successors, (11392), 10245 states have call predecessors, (11392), 10246 states have call successors, (11392) [2021-12-16 00:51:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63071 states to 63071 states and 106888 transitions. [2021-12-16 00:51:56,011 INFO L78 Accepts]: Start accepts. Automaton has 63071 states and 106888 transitions. Word has length 167 [2021-12-16 00:51:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:51:56,012 INFO L470 AbstractCegarLoop]: Abstraction has 63071 states and 106888 transitions. [2021-12-16 00:51:56,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:51:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 63071 states and 106888 transitions. [2021-12-16 00:51:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 00:51:56,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:51:56,372 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:51:56,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 00:51:56,373 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:51:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:51:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash -431681000, now seen corresponding path program 1 times [2021-12-16 00:51:56,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:51:56,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352677734] [2021-12-16 00:51:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:51:56,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:51:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:51:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:51:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:51:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:51:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:51:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:51:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:51:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:51:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:51:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:51:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:51:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:51:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:51:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:51:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 00:51:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 00:51:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 00:51:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-16 00:51:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:51:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 00:51:56,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:51:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352677734] [2021-12-16 00:51:56,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352677734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:51:56,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:51:56,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:51:56,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111747424] [2021-12-16 00:51:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:51:56,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:51:56,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:51:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:51:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:51:56,461 INFO L87 Difference]: Start difference. First operand 63071 states and 106888 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:52:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:52:01,286 INFO L93 Difference]: Finished difference Result 118330 states and 204182 transitions. [2021-12-16 00:52:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:52:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2021-12-16 00:52:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:52:01,753 INFO L225 Difference]: With dead ends: 118330 [2021-12-16 00:52:01,753 INFO L226 Difference]: Without dead ends: 118094 [2021-12-16 00:52:01,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:52:01,820 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 1551 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:52:01,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 1621 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:52:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118094 states. [2021-12-16 00:52:07,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118094 to 117944. [2021-12-16 00:52:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117944 states, 99294 states have (on average 1.609513162930288) internal successors, (159815), 99303 states have internal predecessors, (159815), 18617 states have call successors, (18617), 29 states have call predecessors, (18617), 32 states have return successors, (20806), 18613 states have call predecessors, (20806), 18614 states have call successors, (20806) [2021-12-16 00:52:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117944 states to 117944 states and 199238 transitions. [2021-12-16 00:52:07,730 INFO L78 Accepts]: Start accepts. Automaton has 117944 states and 199238 transitions. Word has length 168 [2021-12-16 00:52:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:52:07,731 INFO L470 AbstractCegarLoop]: Abstraction has 117944 states and 199238 transitions. [2021-12-16 00:52:07,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 00:52:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 117944 states and 199238 transitions. [2021-12-16 00:52:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-16 00:52:07,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:52:07,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:52:07,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 00:52:07,836 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:52:07,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:52:07,836 INFO L85 PathProgramCache]: Analyzing trace with hash -993419557, now seen corresponding path program 1 times [2021-12-16 00:52:07,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:52:07,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578368556] [2021-12-16 00:52:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:52:07,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:52:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:52:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:52:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:52:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:52:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:52:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:52:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:52:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:52:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:52:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:52:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:52:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:52:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:52:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:52:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:52:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 00:52:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-16 00:52:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-16 00:52:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-16 00:52:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-16 00:52:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-16 00:52:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:52:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 00:52:08,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:52:08,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578368556] [2021-12-16 00:52:08,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578368556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:52:08,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:52:08,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 00:52:08,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346383730] [2021-12-16 00:52:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:52:08,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:52:08,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:52:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:52:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:52:08,231 INFO L87 Difference]: Start difference. First operand 117944 states and 199238 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21)