./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:36:57,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:36:57,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:36:57,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:36:57,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:36:57,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:36:57,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:36:57,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:36:57,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:36:57,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:36:57,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:36:57,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:36:57,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:36:57,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:36:57,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:36:57,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:36:57,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:36:57,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:36:57,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:36:57,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:36:57,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:36:57,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:36:57,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:36:57,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:36:57,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:36:57,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:36:57,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:36:57,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:36:57,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:36:57,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:36:57,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:36:57,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:36:57,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:36:57,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:36:57,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:36:57,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:36:57,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:36:57,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:36:57,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:36:57,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:36:57,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:36:57,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:36:57,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:36:57,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:36:57,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:36:57,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:36:57,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:36:57,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:36:57,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:36:57,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:36:57,573 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:36:57,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:36:57,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:36:57,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:36:57,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:36:57,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:36:57,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:36:57,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:36:57,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:36:57,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:36:57,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:36:57,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:36:57,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:36:57,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:36:57,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:36:57,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:36:57,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:36:57,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:36:57,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:36:57,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:36:57,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:36:57,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:36:57,577 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:36:57,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:36:57,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:36:57,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:36:57,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2021-12-14 14:36:57,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:36:57,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:36:57,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:36:57,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:36:57,814 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:36:57,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-12-14 14:36:57,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0230cf3/afca3469901e4760b737b4c52aebaa66/FLAGecb5d564b [2021-12-14 14:36:58,356 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:36:58,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2021-12-14 14:36:58,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0230cf3/afca3469901e4760b737b4c52aebaa66/FLAGecb5d564b [2021-12-14 14:36:58,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0230cf3/afca3469901e4760b737b4c52aebaa66 [2021-12-14 14:36:58,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:36:58,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:36:58,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:36:58,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:36:58,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:36:58,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:36:58" (1/1) ... [2021-12-14 14:36:58,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd055c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:58, skipping insertion in model container [2021-12-14 14:36:58,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:36:58" (1/1) ... [2021-12-14 14:36:58,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:36:58,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:36:58,656 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] [2021-12-14 14:36:59,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:36:59,166 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:36:59,185 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] [2021-12-14 14:36:59,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:36:59,335 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:36:59,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59 WrapperNode [2021-12-14 14:36:59,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:36:59,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:36:59,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:36:59,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:36:59,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,475 INFO L137 Inliner]: procedures = 135, calls = 246, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 1019 [2021-12-14 14:36:59,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:36:59,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:36:59,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:36:59,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:36:59,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:36:59,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:36:59,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:36:59,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:36:59,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (1/1) ... [2021-12-14 14:36:59,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:36:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:59,644 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) [2021-12-14 14:36:59,665 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 [2021-12-14 14:36:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-14 14:36:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-14 14:36:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-14 14:36:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-14 14:36:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-14 14:36:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-14 14:36:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-14 14:36:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-14 14:36:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-14 14:36:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-14 14:36:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-14 14:36:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-14 14:36:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-14 14:36:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-14 14:36:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-14 14:36:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-14 14:36:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-14 14:36:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-14 14:36:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-14 14:36:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-14 14:36:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-14 14:36:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-14 14:36:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-14 14:36:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-14 14:36:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-14 14:36:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-14 14:36:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 14:36:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-14 14:36:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-14 14:36:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-14 14:36:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-14 14:36:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:36:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-14 14:36:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-14 14:36:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-14 14:36:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-14 14:36:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-14 14:36:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-14 14:36:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-14 14:36:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-14 14:36:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-14 14:36:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-14 14:36:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-14 14:36:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-14 14:36:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-14 14:36:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-14 14:36:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-14 14:36:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-14 14:36:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-14 14:36:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-14 14:36:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-14 14:36:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-14 14:36:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-14 14:36:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-14 14:36:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-14 14:36:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-14 14:36:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:36:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-14 14:36:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-14 14:36:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-14 14:36:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-14 14:36:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:36:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:36:59,922 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:36:59,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:37:00,505 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:37:00,517 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:37:00,517 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:37:00,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:00 BoogieIcfgContainer [2021-12-14 14:37:00,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:37:00,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:37:00,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:37:00,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:37:00,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:36:58" (1/3) ... [2021-12-14 14:37:00,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df8d588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:37:00, skipping insertion in model container [2021-12-14 14:37:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59" (2/3) ... [2021-12-14 14:37:00,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df8d588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:37:00, skipping insertion in model container [2021-12-14 14:37:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:00" (3/3) ... [2021-12-14 14:37:00,526 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2021-12-14 14:37:00,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:37:00,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:37:00,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:37:00,566 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 [2021-12-14 14:37:00,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:37:00,582 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) [2021-12-14 14:37:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-14 14:37:00,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:00,603 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] [2021-12-14 14:37:00,604 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2090905474, now seen corresponding path program 1 times [2021-12-14 14:37:00,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:00,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091181936] [2021-12-14 14:37:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:00,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:37:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:37:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:37:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:37:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 14:37:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:37:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:37:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:37:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:37:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:37:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:37:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:37:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:37:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:37:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:37:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:37:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 14:37:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 14:37:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-14 14:37:01,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:01,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091181936] [2021-12-14 14:37:01,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091181936] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:01,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306401634] [2021-12-14 14:37:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:01,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:01,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:01,202 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) [2021-12-14 14:37:01,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:37:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:37:01,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-14 14:37:01,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:37:01,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306401634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:01,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:37:01,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-14 14:37:01,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088364198] [2021-12-14 14:37:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:01,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:37:01,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:37:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:37:01,820 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) [2021-12-14 14:37:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:01,931 INFO L93 Difference]: Finished difference Result 678 states and 1006 transitions. [2021-12-14 14:37:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:37:01,933 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 [2021-12-14 14:37:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:01,943 INFO L225 Difference]: With dead ends: 678 [2021-12-14 14:37:01,944 INFO L226 Difference]: Without dead ends: 428 [2021-12-14 14:37:01,949 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 [2021-12-14 14:37:01,951 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 [2021-12-14 14:37:01,952 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] [2021-12-14 14:37:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-12-14 14:37:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-12-14 14:37:01,997 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) [2021-12-14 14:37:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 644 transitions. [2021-12-14 14:37:02,000 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 644 transitions. Word has length 158 [2021-12-14 14:37:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:02,002 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 644 transitions. [2021-12-14 14:37:02,002 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) [2021-12-14 14:37:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 644 transitions. [2021-12-14 14:37:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-14 14:37:02,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:02,006 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] [2021-12-14 14:37:02,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:37:02,214 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 [2021-12-14 14:37:02,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash -203425603, now seen corresponding path program 1 times [2021-12-14 14:37:02,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:02,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284078528] [2021-12-14 14:37:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:02,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:37:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:37:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:37:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 14:37:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 14:37:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:37:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:37:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:37:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:37:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:37:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:37:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:37:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:37:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:37:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-14 14:37:02,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:02,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284078528] [2021-12-14 14:37:02,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284078528] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:02,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138362954] [2021-12-14 14:37:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:02,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:02,403 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) [2021-12-14 14:37:02,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:37:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:02,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 14:37:02,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:37:02,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:37:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138362954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:02,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:37:02,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:37:02,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671461869] [2021-12-14 14:37:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:02,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:37:02,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:37:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:02,792 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) [2021-12-14 14:37:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:02,814 INFO L93 Difference]: Finished difference Result 667 states and 980 transitions. [2021-12-14 14:37:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:37:02,815 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 [2021-12-14 14:37:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:02,818 INFO L225 Difference]: With dead ends: 667 [2021-12-14 14:37:02,818 INFO L226 Difference]: Without dead ends: 431 [2021-12-14 14:37:02,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:02,819 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 [2021-12-14 14:37:02,820 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] [2021-12-14 14:37:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-14 14:37:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 430. [2021-12-14 14:37:02,856 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) [2021-12-14 14:37:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 646 transitions. [2021-12-14 14:37:02,858 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 646 transitions. Word has length 140 [2021-12-14 14:37:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:02,859 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 646 transitions. [2021-12-14 14:37:02,859 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) [2021-12-14 14:37:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 646 transitions. [2021-12-14 14:37:02,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 14:37:02,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:02,862 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] [2021-12-14 14:37:02,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:37:03,080 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 [2021-12-14 14:37:03,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash 267895932, now seen corresponding path program 1 times [2021-12-14 14:37:03,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:03,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650651805] [2021-12-14 14:37:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:03,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:37:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:37:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:37:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 14:37:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:37:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:37:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:37:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:37:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:37:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:37:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:37:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:37:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:37:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:37:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:37:03,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:03,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650651805] [2021-12-14 14:37:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650651805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:03,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144814811] [2021-12-14 14:37:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:03,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:03,236 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) [2021-12-14 14:37:03,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:37:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:37:03,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:37:03,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:37:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144814811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:03,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:37:03,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:37:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063966665] [2021-12-14 14:37:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:03,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:37:03,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:37:03,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:03,687 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) [2021-12-14 14:37:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:03,709 INFO L93 Difference]: Finished difference Result 908 states and 1384 transitions. [2021-12-14 14:37:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:37:03,709 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 [2021-12-14 14:37:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:03,712 INFO L225 Difference]: With dead ends: 908 [2021-12-14 14:37:03,712 INFO L226 Difference]: Without dead ends: 505 [2021-12-14 14:37:03,713 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 [2021-12-14 14:37:03,714 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 [2021-12-14 14:37:03,715 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] [2021-12-14 14:37:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-14 14:37:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 497. [2021-12-14 14:37:03,739 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) [2021-12-14 14:37:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 763 transitions. [2021-12-14 14:37:03,741 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 763 transitions. Word has length 149 [2021-12-14 14:37:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:03,744 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 763 transitions. [2021-12-14 14:37:03,744 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) [2021-12-14 14:37:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 763 transitions. [2021-12-14 14:37:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-14 14:37:03,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:03,747 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] [2021-12-14 14:37:03,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 14:37:03,965 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 [2021-12-14 14:37:03,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash -490279062, now seen corresponding path program 1 times [2021-12-14 14:37:03,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:03,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73209206] [2021-12-14 14:37:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:03,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:37:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:37:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:37:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:37:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 14:37:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:37:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:37:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:37:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:37:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:37:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:37:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:37:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:37:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 14:37:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:37:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:37:04,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73209206] [2021-12-14 14:37:04,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73209206] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590994050] [2021-12-14 14:37:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:04,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:04,082 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) [2021-12-14 14:37:04,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:37:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 14:37:04,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:37:04,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:37:04,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590994050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:04,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:37:04,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-14 14:37:04,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361616798] [2021-12-14 14:37:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:04,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:37:04,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:37:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:37:04,521 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) [2021-12-14 14:37:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:04,571 INFO L93 Difference]: Finished difference Result 985 states and 1516 transitions. [2021-12-14 14:37:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:37:04,572 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 [2021-12-14 14:37:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:04,575 INFO L225 Difference]: With dead ends: 985 [2021-12-14 14:37:04,575 INFO L226 Difference]: Without dead ends: 499 [2021-12-14 14:37:04,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:37:04,577 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 [2021-12-14 14:37:04,578 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] [2021-12-14 14:37:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-14 14:37:04,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-12-14 14:37:04,592 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) [2021-12-14 14:37:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 766 transitions. [2021-12-14 14:37:04,594 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 766 transitions. Word has length 150 [2021-12-14 14:37:04,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:04,595 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 766 transitions. [2021-12-14 14:37:04,595 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) [2021-12-14 14:37:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 766 transitions. [2021-12-14 14:37:04,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-14 14:37:04,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:04,598 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] [2021-12-14 14:37:04,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:37:04,816 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 [2021-12-14 14:37:04,817 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1459855946, now seen corresponding path program 1 times [2021-12-14 14:37:04,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:04,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051949632] [2021-12-14 14:37:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:04,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 14:37:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 14:37:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:37:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 14:37:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:37:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:37:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:37:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:37:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:37:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:37:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:37:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:37:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 14:37:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:37:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 14:37:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 14:37:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 14:37:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:05,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051949632] [2021-12-14 14:37:05,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051949632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043596514] [2021-12-14 14:37:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:05,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:05,010 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) [2021-12-14 14:37:05,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:37:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 14:37:05,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-14 14:37:05,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:37:05,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043596514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:05,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:37:05,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-14 14:37:05,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559095355] [2021-12-14 14:37:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:05,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:37:05,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:37:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:37:05,455 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) [2021-12-14 14:37:05,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:05,503 INFO L93 Difference]: Finished difference Result 987 states and 1521 transitions. [2021-12-14 14:37:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:37:05,504 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 [2021-12-14 14:37:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:05,506 INFO L225 Difference]: With dead ends: 987 [2021-12-14 14:37:05,506 INFO L226 Difference]: Without dead ends: 501 [2021-12-14 14:37:05,508 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 [2021-12-14 14:37:05,508 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 [2021-12-14 14:37:05,509 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] [2021-12-14 14:37:05,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-14 14:37:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2021-12-14 14:37:05,521 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) [2021-12-14 14:37:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 772 transitions. [2021-12-14 14:37:05,523 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 772 transitions. Word has length 170 [2021-12-14 14:37:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:05,523 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 772 transitions. [2021-12-14 14:37:05,524 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) [2021-12-14 14:37:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 772 transitions. [2021-12-14 14:37:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-14 14:37:05,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:05,526 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] [2021-12-14 14:37:05,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 14:37:05,745 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 [2021-12-14 14:37:05,745 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:05,746 INFO L85 PathProgramCache]: Analyzing trace with hash -162534071, now seen corresponding path program 1 times [2021-12-14 14:37:05,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:05,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393287659] [2021-12-14 14:37:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:05,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 14:37:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:37:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 14:37:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:37:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:37:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:37:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:37:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:37:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:37:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:37:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:37:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:37:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:37:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 14:37:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 14:37:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-14 14:37:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-14 14:37:05,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393287659] [2021-12-14 14:37:05,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393287659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:05,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:05,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:37:05,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920288631] [2021-12-14 14:37:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:05,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:37:05,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:37:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:37:05,971 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) [2021-12-14 14:37:07,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:07,823 INFO L93 Difference]: Finished difference Result 1121 states and 1750 transitions. [2021-12-14 14:37:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:37:07,824 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 [2021-12-14 14:37:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:07,827 INFO L225 Difference]: With dead ends: 1121 [2021-12-14 14:37:07,827 INFO L226 Difference]: Without dead ends: 643 [2021-12-14 14:37:07,829 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 [2021-12-14 14:37:07,829 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1581 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:07,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 1993 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 14:37:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-14 14:37:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 501. [2021-12-14 14:37:07,851 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) [2021-12-14 14:37:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 771 transitions. [2021-12-14 14:37:07,854 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 771 transitions. Word has length 171 [2021-12-14 14:37:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:07,854 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 771 transitions. [2021-12-14 14:37:07,854 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) [2021-12-14 14:37:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 771 transitions. [2021-12-14 14:37:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-14 14:37:07,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:07,857 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] [2021-12-14 14:37:07,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:37:07,857 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -682164201, now seen corresponding path program 1 times [2021-12-14 14:37:07,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:07,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421487625] [2021-12-14 14:37:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:07,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 14:37:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:37:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:37:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:37:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:37:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:37:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:37:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:37:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:37:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:37:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:37:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:37:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 14:37:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:37:07,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421487625] [2021-12-14 14:37:07,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421487625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:07,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:07,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:37:07,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333247059] [2021-12-14 14:37:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:07,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:37:07,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:37:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:37:07,970 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) [2021-12-14 14:37:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:09,502 INFO L93 Difference]: Finished difference Result 1123 states and 1753 transitions. [2021-12-14 14:37:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:37:09,503 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 [2021-12-14 14:37:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:09,506 INFO L225 Difference]: With dead ends: 1123 [2021-12-14 14:37:09,506 INFO L226 Difference]: Without dead ends: 645 [2021-12-14 14:37:09,507 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 [2021-12-14 14:37:09,508 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1576 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:09,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 1994 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:37:09,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-14 14:37:09,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 503. [2021-12-14 14:37:09,526 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) [2021-12-14 14:37:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 774 transitions. [2021-12-14 14:37:09,528 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 774 transitions. Word has length 153 [2021-12-14 14:37:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:09,529 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 774 transitions. [2021-12-14 14:37:09,529 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) [2021-12-14 14:37:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 774 transitions. [2021-12-14 14:37:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-14 14:37:09,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:09,531 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] [2021-12-14 14:37:09,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:37:09,531 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash -487176677, now seen corresponding path program 1 times [2021-12-14 14:37:09,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:09,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495517728] [2021-12-14 14:37:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:09,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:37:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:37:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:37:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:37:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:37:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:37:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:37:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:37:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:37:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:37:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:37:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:37:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:37:09,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:09,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495517728] [2021-12-14 14:37:09,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495517728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:09,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:09,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:37:09,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13435309] [2021-12-14 14:37:09,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:09,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:37:09,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:09,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:37:09,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:37:09,645 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) [2021-12-14 14:37:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:11,657 INFO L93 Difference]: Finished difference Result 1121 states and 1748 transitions. [2021-12-14 14:37:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:37:11,658 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 [2021-12-14 14:37:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:11,661 INFO L225 Difference]: With dead ends: 1121 [2021-12-14 14:37:11,662 INFO L226 Difference]: Without dead ends: 645 [2021-12-14 14:37:11,663 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 [2021-12-14 14:37:11,664 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 1709 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 4501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:11,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 2643 Invalid, 4501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 14:37:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-14 14:37:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 503. [2021-12-14 14:37:11,702 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) [2021-12-14 14:37:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 773 transitions. [2021-12-14 14:37:11,704 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 773 transitions. Word has length 154 [2021-12-14 14:37:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:11,704 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 773 transitions. [2021-12-14 14:37:11,705 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) [2021-12-14 14:37:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 773 transitions. [2021-12-14 14:37:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-14 14:37:11,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:11,707 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] [2021-12-14 14:37:11,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:37:11,707 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash -841964714, now seen corresponding path program 2 times [2021-12-14 14:37:11,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:11,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446092365] [2021-12-14 14:37:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:11,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 14:37:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:37:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:37:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:37:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:37:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:37:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:37:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:37:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:37:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:37:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 14:37:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:37:11,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:11,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446092365] [2021-12-14 14:37:11,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446092365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:11,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:11,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:37:11,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621925044] [2021-12-14 14:37:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:11,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:37:11,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:37:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:37:11,827 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) [2021-12-14 14:37:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:13,899 INFO L93 Difference]: Finished difference Result 1123 states and 1754 transitions. [2021-12-14 14:37:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:37:13,899 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 [2021-12-14 14:37:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:13,902 INFO L225 Difference]: With dead ends: 1123 [2021-12-14 14:37:13,902 INFO L226 Difference]: Without dead ends: 647 [2021-12-14 14:37:13,904 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 [2021-12-14 14:37:13,904 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1705 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:13,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 2623 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 14:37:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-14 14:37:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 505. [2021-12-14 14:37:13,939 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) [2021-12-14 14:37:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 779 transitions. [2021-12-14 14:37:13,941 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 779 transitions. Word has length 155 [2021-12-14 14:37:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:13,942 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 779 transitions. [2021-12-14 14:37:13,942 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) [2021-12-14 14:37:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 779 transitions. [2021-12-14 14:37:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-14 14:37:13,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:13,945 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] [2021-12-14 14:37:13,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:37:13,946 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -778011437, now seen corresponding path program 1 times [2021-12-14 14:37:13,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:13,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632323282] [2021-12-14 14:37:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:13,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 14:37:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:37:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:37:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:37:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:37:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:37:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:37:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:37:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:37:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:37:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:37:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:37:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 14:37:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 14:37:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-14 14:37:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-14 14:37:14,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:14,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632323282] [2021-12-14 14:37:14,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632323282] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:14,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601207674] [2021-12-14 14:37:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:14,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:14,108 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) [2021-12-14 14:37:14,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:37:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:37:14,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 14:37:14,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:37:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 14:37:14,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601207674] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:37:14,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:37:14,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-14 14:37:14,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536402684] [2021-12-14 14:37:14,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:37:14,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 14:37:14,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 14:37:14,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:37:14,901 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) [2021-12-14 14:37:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:17,839 INFO L93 Difference]: Finished difference Result 1982 states and 3312 transitions. [2021-12-14 14:37:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 14:37:17,840 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 [2021-12-14 14:37:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:17,847 INFO L225 Difference]: With dead ends: 1982 [2021-12-14 14:37:17,847 INFO L226 Difference]: Without dead ends: 1508 [2021-12-14 14:37:17,849 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 [2021-12-14 14:37:17,849 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 3626 mSDsluCounter, 3803 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 1494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3628 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 6941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1494 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:17,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3628 Valid, 4708 Invalid, 6941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1494 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 14:37:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-12-14 14:37:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 923. [2021-12-14 14:37:17,889 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) [2021-12-14 14:37:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1513 transitions. [2021-12-14 14:37:17,894 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1513 transitions. Word has length 175 [2021-12-14 14:37:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 1513 transitions. [2021-12-14 14:37:17,894 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) [2021-12-14 14:37:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1513 transitions. [2021-12-14 14:37:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 14:37:17,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:17,898 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] [2021-12-14 14:37:17,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-14 14:37:18,111 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 [2021-12-14 14:37:18,112 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash -349752768, now seen corresponding path program 1 times [2021-12-14 14:37:18,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:18,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419816244] [2021-12-14 14:37:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:18,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:37:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:37:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:37:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:37:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:37:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:37:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:37:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:37:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:37:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 14:37:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:37:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 14:37:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 14:37:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 14:37:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 14:37:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 14:37:18,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:18,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419816244] [2021-12-14 14:37:18,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419816244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:18,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:18,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:18,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063084467] [2021-12-14 14:37:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:18,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:18,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:18,197 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) [2021-12-14 14:37:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:19,290 INFO L93 Difference]: Finished difference Result 2308 states and 3880 transitions. [2021-12-14 14:37:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:19,291 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 [2021-12-14 14:37:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:19,298 INFO L225 Difference]: With dead ends: 2308 [2021-12-14 14:37:19,298 INFO L226 Difference]: Without dead ends: 1463 [2021-12-14 14:37:19,300 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 [2021-12-14 14:37:19,301 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1568 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:19,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 1686 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 14:37:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-12-14 14:37:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1313. [2021-12-14 14:37:19,352 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) [2021-12-14 14:37:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2201 transitions. [2021-12-14 14:37:19,388 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2201 transitions. Word has length 178 [2021-12-14 14:37:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:19,388 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 2201 transitions. [2021-12-14 14:37:19,388 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) [2021-12-14 14:37:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2201 transitions. [2021-12-14 14:37:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-14 14:37:19,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:19,394 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] [2021-12-14 14:37:19,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 14:37:19,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1186620882, now seen corresponding path program 1 times [2021-12-14 14:37:19,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:19,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358857500] [2021-12-14 14:37:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:19,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:37:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:37:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:37:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:37:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:37:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:37:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:37:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:37:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:37:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 14:37:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:37:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 14:37:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:19,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358857500] [2021-12-14 14:37:19,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358857500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:19,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:19,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:19,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361398273] [2021-12-14 14:37:19,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:19,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:19,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:19,484 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) [2021-12-14 14:37:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:21,015 INFO L93 Difference]: Finished difference Result 3282 states and 5589 transitions. [2021-12-14 14:37:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:21,015 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 [2021-12-14 14:37:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:21,023 INFO L225 Difference]: With dead ends: 3282 [2021-12-14 14:37:21,023 INFO L226 Difference]: Without dead ends: 2100 [2021-12-14 14:37:21,025 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 [2021-12-14 14:37:21,026 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1566 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:21,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1629 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:37:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-12-14 14:37:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1950. [2021-12-14 14:37:21,090 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) [2021-12-14 14:37:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3297 transitions. [2021-12-14 14:37:21,095 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3297 transitions. Word has length 160 [2021-12-14 14:37:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:21,095 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 3297 transitions. [2021-12-14 14:37:21,096 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) [2021-12-14 14:37:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3297 transitions. [2021-12-14 14:37:21,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-14 14:37:21,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:21,102 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] [2021-12-14 14:37:21,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 14:37:21,103 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1787350665, now seen corresponding path program 1 times [2021-12-14 14:37:21,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:21,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243232286] [2021-12-14 14:37:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:21,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:37:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:37:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:37:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:37:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:37:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:37:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:37:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:37:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:37:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 14:37:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 14:37:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 14:37:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:21,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243232286] [2021-12-14 14:37:21,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243232286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:21,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:21,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:21,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335560801] [2021-12-14 14:37:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:21,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:21,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:21,198 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) [2021-12-14 14:37:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:22,505 INFO L93 Difference]: Finished difference Result 4762 states and 8200 transitions. [2021-12-14 14:37:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:22,506 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 [2021-12-14 14:37:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:22,517 INFO L225 Difference]: With dead ends: 4762 [2021-12-14 14:37:22,518 INFO L226 Difference]: Without dead ends: 3078 [2021-12-14 14:37:22,522 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 [2021-12-14 14:37:22,523 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 1566 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:22,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1628 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:37:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-12-14 14:37:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2928. [2021-12-14 14:37:22,644 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) [2021-12-14 14:37:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4991 transitions. [2021-12-14 14:37:22,651 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4991 transitions. Word has length 161 [2021-12-14 14:37:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:22,651 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4991 transitions. [2021-12-14 14:37:22,652 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) [2021-12-14 14:37:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4991 transitions. [2021-12-14 14:37:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 14:37:22,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:22,663 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] [2021-12-14 14:37:22,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 14:37:22,664 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1664558125, now seen corresponding path program 1 times [2021-12-14 14:37:22,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:22,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662490560] [2021-12-14 14:37:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:22,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:37:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:37:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:37:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:37:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:37:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:37:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:37:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:37:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:37:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 14:37:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:37:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:22,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:22,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662490560] [2021-12-14 14:37:22,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662490560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:22,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:22,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:22,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994933866] [2021-12-14 14:37:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:22,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:22,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:22,751 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) [2021-12-14 14:37:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:24,045 INFO L93 Difference]: Finished difference Result 7101 states and 12335 transitions. [2021-12-14 14:37:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:24,046 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 [2021-12-14 14:37:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:24,065 INFO L225 Difference]: With dead ends: 7101 [2021-12-14 14:37:24,065 INFO L226 Difference]: Without dead ends: 4658 [2021-12-14 14:37:24,073 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 [2021-12-14 14:37:24,073 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 1564 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:24,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 1622 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:37:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-14 14:37:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4508. [2021-12-14 14:37:24,284 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) [2021-12-14 14:37:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 7723 transitions. [2021-12-14 14:37:24,294 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 7723 transitions. Word has length 162 [2021-12-14 14:37:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:24,295 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 7723 transitions. [2021-12-14 14:37:24,295 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) [2021-12-14 14:37:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 7723 transitions. [2021-12-14 14:37:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-14 14:37:24,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:24,311 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] [2021-12-14 14:37:24,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 14:37:24,311 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1107801619, now seen corresponding path program 1 times [2021-12-14 14:37:24,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604223883] [2021-12-14 14:37:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:24,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:37:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:37:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:37:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:37:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:37:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:37:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:37:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:37:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 14:37:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:37:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 14:37:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 14:37:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:24,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:24,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604223883] [2021-12-14 14:37:24,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604223883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:24,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:24,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:24,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46058336] [2021-12-14 14:37:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:24,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:24,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:24,412 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) [2021-12-14 14:37:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:25,792 INFO L93 Difference]: Finished difference Result 11272 states and 19664 transitions. [2021-12-14 14:37:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:25,792 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 [2021-12-14 14:37:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:25,821 INFO L225 Difference]: With dead ends: 11272 [2021-12-14 14:37:25,822 INFO L226 Difference]: Without dead ends: 7501 [2021-12-14 14:37:25,831 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 [2021-12-14 14:37:25,832 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1563 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:25,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 1640 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:37:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-12-14 14:37:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7351. [2021-12-14 14:37:26,153 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) [2021-12-14 14:37:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 12612 transitions. [2021-12-14 14:37:26,170 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 12612 transitions. Word has length 163 [2021-12-14 14:37:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:26,170 INFO L470 AbstractCegarLoop]: Abstraction has 7351 states and 12612 transitions. [2021-12-14 14:37:26,171 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) [2021-12-14 14:37:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 12612 transitions. [2021-12-14 14:37:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-14 14:37:26,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:26,197 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] [2021-12-14 14:37:26,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 14:37:26,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1672435511, now seen corresponding path program 1 times [2021-12-14 14:37:26,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:26,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881959160] [2021-12-14 14:37:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:26,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:37:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:37:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:37:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:37:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:37:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:37:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:37:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:37:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:37:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:37:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 14:37:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 14:37:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:26,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:26,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881959160] [2021-12-14 14:37:26,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881959160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:26,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:26,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:26,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6874189] [2021-12-14 14:37:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:26,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:26,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:26,279 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) [2021-12-14 14:37:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:27,749 INFO L93 Difference]: Finished difference Result 18692 states and 32628 transitions. [2021-12-14 14:37:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:27,750 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 [2021-12-14 14:37:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:27,788 INFO L225 Difference]: With dead ends: 18692 [2021-12-14 14:37:27,788 INFO L226 Difference]: Without dead ends: 12480 [2021-12-14 14:37:27,806 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 [2021-12-14 14:37:27,807 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1557 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:27,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 1635 Invalid, 1729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [655 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:37:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2021-12-14 14:37:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 12330. [2021-12-14 14:37:28,310 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) [2021-12-14 14:37:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12330 states to 12330 states and 21185 transitions. [2021-12-14 14:37:28,344 INFO L78 Accepts]: Start accepts. Automaton has 12330 states and 21185 transitions. Word has length 164 [2021-12-14 14:37:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:28,344 INFO L470 AbstractCegarLoop]: Abstraction has 12330 states and 21185 transitions. [2021-12-14 14:37:28,345 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) [2021-12-14 14:37:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12330 states and 21185 transitions. [2021-12-14 14:37:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-14 14:37:28,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:28,376 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] [2021-12-14 14:37:28,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 14:37:28,377 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:28,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -6959371, now seen corresponding path program 1 times [2021-12-14 14:37:28,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:28,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428903878] [2021-12-14 14:37:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:28,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:37:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:37:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:37:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:37:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:37:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:37:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:37:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:37:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 14:37:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:37:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 14:37:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 14:37:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:28,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:28,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428903878] [2021-12-14 14:37:28,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428903878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:28,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:28,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:28,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278372098] [2021-12-14 14:37:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:28,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:28,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:28,456 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) [2021-12-14 14:37:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:30,185 INFO L93 Difference]: Finished difference Result 29650 states and 51488 transitions. [2021-12-14 14:37:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:30,186 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 [2021-12-14 14:37:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:30,236 INFO L225 Difference]: With dead ends: 29650 [2021-12-14 14:37:30,237 INFO L226 Difference]: Without dead ends: 19433 [2021-12-14 14:37:30,327 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 [2021-12-14 14:37:30,328 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1557 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:30,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 1609 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:37:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2021-12-14 14:37:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19283. [2021-12-14 14:37:31,199 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) [2021-12-14 14:37:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19283 states to 19283 states and 32805 transitions. [2021-12-14 14:37:31,246 INFO L78 Accepts]: Start accepts. Automaton has 19283 states and 32805 transitions. Word has length 165 [2021-12-14 14:37:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:31,246 INFO L470 AbstractCegarLoop]: Abstraction has 19283 states and 32805 transitions. [2021-12-14 14:37:31,247 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) [2021-12-14 14:37:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 19283 states and 32805 transitions. [2021-12-14 14:37:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-14 14:37:31,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:31,284 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] [2021-12-14 14:37:31,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 14:37:31,285 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 918650769, now seen corresponding path program 1 times [2021-12-14 14:37:31,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:31,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700746711] [2021-12-14 14:37:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:31,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:37:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:37:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:37:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:37:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:37:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:37:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:37:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:37:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 14:37:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 14:37:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 14:37:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 14:37:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-14 14:37:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 14:37:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 14:37:31,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700746711] [2021-12-14 14:37:31,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700746711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:31,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:31,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:31,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958255612] [2021-12-14 14:37:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:31,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:31,413 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) [2021-12-14 14:37:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:33,797 INFO L93 Difference]: Finished difference Result 51082 states and 88406 transitions. [2021-12-14 14:37:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:33,803 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 [2021-12-14 14:37:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:33,933 INFO L225 Difference]: With dead ends: 51082 [2021-12-14 14:37:33,933 INFO L226 Difference]: Without dead ends: 34554 [2021-12-14 14:37:33,979 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 [2021-12-14 14:37:33,980 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 1557 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:33,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 1623 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:37:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34554 states. [2021-12-14 14:37:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34554 to 34404. [2021-12-14 14:37:35,379 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) [2021-12-14 14:37:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34404 states to 34404 states and 58445 transitions. [2021-12-14 14:37:35,577 INFO L78 Accepts]: Start accepts. Automaton has 34404 states and 58445 transitions. Word has length 185 [2021-12-14 14:37:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:35,578 INFO L470 AbstractCegarLoop]: Abstraction has 34404 states and 58445 transitions. [2021-12-14 14:37:35,578 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) [2021-12-14 14:37:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 34404 states and 58445 transitions. [2021-12-14 14:37:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 14:37:35,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:35,636 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] [2021-12-14 14:37:35,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 14:37:35,636 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1358509329, now seen corresponding path program 1 times [2021-12-14 14:37:35,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:35,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470762966] [2021-12-14 14:37:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:35,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:37:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:37:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:37:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:37:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:37:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:37:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:37:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:37:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 14:37:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 14:37:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 14:37:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 14:37:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:35,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:35,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470762966] [2021-12-14 14:37:35,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470762966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:35,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:35,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:35,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103149664] [2021-12-14 14:37:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:35,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:35,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:35,742 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) [2021-12-14 14:37:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:38,929 INFO L93 Difference]: Finished difference Result 93954 states and 161805 transitions. [2021-12-14 14:37:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:38,930 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 [2021-12-14 14:37:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:39,139 INFO L225 Difference]: With dead ends: 93954 [2021-12-14 14:37:39,139 INFO L226 Difference]: Without dead ends: 63221 [2021-12-14 14:37:39,216 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 [2021-12-14 14:37:39,217 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1552 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:39,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 1631 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:37:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63221 states. [2021-12-14 14:37:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63221 to 63071. [2021-12-14 14:37:42,391 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) [2021-12-14 14:37:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63071 states to 63071 states and 106888 transitions. [2021-12-14 14:37:42,629 INFO L78 Accepts]: Start accepts. Automaton has 63071 states and 106888 transitions. Word has length 167 [2021-12-14 14:37:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:42,630 INFO L470 AbstractCegarLoop]: Abstraction has 63071 states and 106888 transitions. [2021-12-14 14:37:42,630 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) [2021-12-14 14:37:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 63071 states and 106888 transitions. [2021-12-14 14:37:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 14:37:42,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:42,789 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] [2021-12-14 14:37:42,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 14:37:42,789 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -431681000, now seen corresponding path program 1 times [2021-12-14 14:37:42,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:42,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821518558] [2021-12-14 14:37:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:42,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:37:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:37:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:37:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:37:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:37:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:37:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:37:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:37:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 14:37:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:37:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 14:37:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:42,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821518558] [2021-12-14 14:37:42,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821518558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:42,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:42,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:37:42,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866307138] [2021-12-14 14:37:42,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:42,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:37:42,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:37:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:37:42,916 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) [2021-12-14 14:37:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:47,757 INFO L93 Difference]: Finished difference Result 118330 states and 204182 transitions. [2021-12-14 14:37:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:37:47,757 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 [2021-12-14 14:37:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:48,386 INFO L225 Difference]: With dead ends: 118330 [2021-12-14 14:37:48,386 INFO L226 Difference]: Without dead ends: 118094 [2021-12-14 14:37:48,431 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 [2021-12-14 14:37:48,431 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1549 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:48,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 1634 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:37:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118094 states. [2021-12-14 14:37:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118094 to 117944. [2021-12-14 14:37:53,665 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) [2021-12-14 14:37:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117944 states to 117944 states and 199238 transitions. [2021-12-14 14:37:54,119 INFO L78 Accepts]: Start accepts. Automaton has 117944 states and 199238 transitions. Word has length 168 [2021-12-14 14:37:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:54,119 INFO L470 AbstractCegarLoop]: Abstraction has 117944 states and 199238 transitions. [2021-12-14 14:37:54,119 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) [2021-12-14 14:37:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 117944 states and 199238 transitions. [2021-12-14 14:37:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-14 14:37:54,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:54,239 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] [2021-12-14 14:37:54,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 14:37:54,240 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -993419557, now seen corresponding path program 1 times [2021-12-14 14:37:54,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:54,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298458261] [2021-12-14 14:37:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:54,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:37:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:37:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:37:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:37:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:37:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:37:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:37:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:37:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:37:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:37:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 14:37:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 14:37:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-14 14:37:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-14 14:37:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-14 14:37:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 14:37:54,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:54,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298458261] [2021-12-14 14:37:54,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298458261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:54,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:54,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 14:37:54,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208608888] [2021-12-14 14:37:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:54,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 14:37:54,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 14:37:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:54,628 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)