./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_spec11_product33.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 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:00:37,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:00:37,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:00:37,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:00:37,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:00:37,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:00:37,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:00:37,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:00:37,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:00:37,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:00:37,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:00:37,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:00:37,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:00:37,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:00:37,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:00:37,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:00:37,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:00:37,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:00:37,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:00:37,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:00:37,282 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:00:37,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:00:37,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:00:37,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:00:37,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:00:37,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:00:37,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:00:37,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:00:37,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:00:37,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:00:37,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:00:37,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:00:37,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:00:37,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:00:37,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:00:37,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:00:37,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:00:37,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:00:37,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:00:37,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:00:37,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:00:37,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:00:37,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:00:37,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:00:37,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:00:37,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:00:37,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:00:37,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:00:37,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:00:37,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:00:37,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:00:37,330 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:00:37,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:00:37,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:00:37,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:00:37,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:00:37,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:00:37,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:00:37,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:00:37,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:00:37,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:00:37,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:00:37,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:00:37,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:00:37,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:00:37,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:00:37,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:00:37,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:00:37,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:00:37,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:00:37,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:00:37,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:00:37,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:00:37,335 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:00:37,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:00:37,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:00:37,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d [2022-07-12 06:00:37,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:00:37,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:00:37,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:00:37,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:00:37,604 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:00:37,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-07-12 06:00:37,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09e9f27b/a22355aa443a454fbec422424738ffac/FLAG0288818a0 [2022-07-12 06:00:38,171 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:00:38,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-07-12 06:00:38,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09e9f27b/a22355aa443a454fbec422424738ffac/FLAG0288818a0 [2022-07-12 06:00:38,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09e9f27b/a22355aa443a454fbec422424738ffac [2022-07-12 06:00:38,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:00:38,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:00:38,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:00:38,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:00:38,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:00:38,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:00:38" (1/1) ... [2022-07-12 06:00:38,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59049437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:38, skipping insertion in model container [2022-07-12 06:00:38,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:00:38" (1/1) ... [2022-07-12 06:00:38,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:00:38,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:00:38,982 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_spec11_product33.cil.c[64763,64776] [2022-07-12 06:00:38,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:00:38,998 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:00:39,082 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_spec11_product33.cil.c[64763,64776] [2022-07-12 06:00:39,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:00:39,109 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:00:39,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39 WrapperNode [2022-07-12 06:00:39,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:00:39,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:00:39,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:00:39,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:00:39,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,200 INFO L137 Inliner]: procedures = 134, calls = 227, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1064 [2022-07-12 06:00:39,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:00:39,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:00:39,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:00:39,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:00:39,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:00:39,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:00:39,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:00:39,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:00:39,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (1/1) ... [2022-07-12 06:00:39,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:00:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:39,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:00:39,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:00:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-12 06:00:39,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-12 06:00:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-12 06:00:39,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-12 06:00:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-12 06:00:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-12 06:00:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-12 06:00:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-12 06:00:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-12 06:00:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-12 06:00:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-12 06:00:39,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-12 06:00:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-12 06:00:39,461 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-12 06:00:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-12 06:00:39,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-12 06:00:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-12 06:00:39,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-12 06:00:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-12 06:00:39,462 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-12 06:00:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-12 06:00:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-12 06:00:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-12 06:00:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-12 06:00:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-12 06:00:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-12 06:00:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-12 06:00:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:00:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-12 06:00:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-12 06:00:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-12 06:00:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-12 06:00:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-12 06:00:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-12 06:00:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-12 06:00:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-12 06:00:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-12 06:00:39,466 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-12 06:00:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-12 06:00:39,466 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-12 06:00:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-12 06:00:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-12 06:00:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-12 06:00:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-12 06:00:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-12 06:00:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-12 06:00:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-12 06:00:39,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-12 06:00:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:00:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-12 06:00:39,468 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-12 06:00:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:00:39,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:00:39,705 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:00:39,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:00:40,288 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:00:40,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:00:40,298 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:00:40,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:00:40 BoogieIcfgContainer [2022-07-12 06:00:40,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:00:40,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:00:40,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:00:40,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:00:40,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:00:38" (1/3) ... [2022-07-12 06:00:40,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b51bae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:00:40, skipping insertion in model container [2022-07-12 06:00:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:00:39" (2/3) ... [2022-07-12 06:00:40,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b51bae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:00:40, skipping insertion in model container [2022-07-12 06:00:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:00:40" (3/3) ... [2022-07-12 06:00:40,307 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2022-07-12 06:00:40,320 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:00:40,320 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:00:40,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:00:40,384 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19b93e68, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f796c5d [2022-07-12 06:00:40,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:00:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-07-12 06:00:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 06:00:40,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:40,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2022-07-12 06:00:40,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1565848355, now seen corresponding path program 1 times [2022-07-12 06:00:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:40,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146283691] [2022-07-12 06:00:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:00:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:00:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:00:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:00:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 06:00:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:00:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:00:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:00:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:00:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:00:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:00:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:00:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:00:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 06:00:40,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:40,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146283691] [2022-07-12 06:00:40,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146283691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:00:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338842699] [2022-07-12 06:00:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:40,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:40,948 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) [2022-07-12 06:00:40,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:00:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 06:00:41,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:00:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-12 06:00:41,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:00:41,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338842699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:41,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:00:41,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-12 06:00:41,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151413462] [2022-07-12 06:00:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:41,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:00:41,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:00:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:00:41,345 INFO L87 Difference]: Start difference. First operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:41,432 INFO L93 Difference]: Finished difference Result 611 states and 886 transitions. [2022-07-12 06:00:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:00:41,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2022-07-12 06:00:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:41,449 INFO L225 Difference]: With dead ends: 611 [2022-07-12 06:00:41,449 INFO L226 Difference]: Without dead ends: 378 [2022-07-12 06:00:41,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:00:41,460 INFO L413 NwaCegarLoop]: 566 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, 566 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:41,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:00:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-12 06:00:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-07-12 06:00:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 291 states have (on average 1.4948453608247423) internal successors, (435), 294 states have internal predecessors, (435), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-12 06:00:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 558 transitions. [2022-07-12 06:00:41,535 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 558 transitions. Word has length 139 [2022-07-12 06:00:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:41,536 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 558 transitions. [2022-07-12 06:00:41,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 558 transitions. [2022-07-12 06:00:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 06:00:41,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:41,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2022-07-12 06:00:41,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:00:41,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 06:00:41,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1479941590, now seen corresponding path program 1 times [2022-07-12 06:00:41,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:41,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910468752] [2022-07-12 06:00:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:41,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:00:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:00:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:00:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:00:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 06:00:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:00:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:00:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:00:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:00:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:00:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:00:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:00:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:00:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 06:00:41,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:41,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910468752] [2022-07-12 06:00:41,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910468752] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:00:41,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022198134] [2022-07-12 06:00:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:41,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:41,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:42,004 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) [2022-07-12 06:00:42,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:00:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 06:00:42,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:00:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-12 06:00:42,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:00:42,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022198134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:42,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:00:42,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:00:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778142351] [2022-07-12 06:00:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:42,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:00:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:00:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:00:42,378 INFO L87 Difference]: Start difference. First operand 378 states and 558 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:42,401 INFO L93 Difference]: Finished difference Result 601 states and 867 transitions. [2022-07-12 06:00:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:00:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 140 [2022-07-12 06:00:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:42,403 INFO L225 Difference]: With dead ends: 601 [2022-07-12 06:00:42,403 INFO L226 Difference]: Without dead ends: 381 [2022-07-12 06:00:42,404 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:00:42,405 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:42,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1110 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:00:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-12 06:00:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2022-07-12 06:00:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 296 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-07-12 06:00:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 560 transitions. [2022-07-12 06:00:42,417 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 560 transitions. Word has length 140 [2022-07-12 06:00:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:42,418 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 560 transitions. [2022-07-12 06:00:42,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 560 transitions. [2022-07-12 06:00:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 06:00:42,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:42,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-07-12 06:00:42,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 06:00:42,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 06:00:42,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1847088840, now seen corresponding path program 1 times [2022-07-12 06:00:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:42,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276710611] [2022-07-12 06:00:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:42,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:00:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:00:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:00:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 06:00:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:00:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:00:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:00:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:00:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:00:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:00:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:00:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:00:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 06:00:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 06:00:42,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276710611] [2022-07-12 06:00:42,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276710611] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:00:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371672816] [2022-07-12 06:00:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:42,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:42,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:42,746 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) [2022-07-12 06:00:42,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:00:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:42,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:00:42,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:00:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-12 06:00:42,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:00:42,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371672816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:42,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:00:42,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:00:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576289924] [2022-07-12 06:00:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:42,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:00:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:00:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:00:42,999 INFO L87 Difference]: Start difference. First operand 380 states and 560 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:43,045 INFO L93 Difference]: Finished difference Result 795 states and 1187 transitions. [2022-07-12 06:00:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:00:43,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2022-07-12 06:00:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:43,049 INFO L225 Difference]: With dead ends: 795 [2022-07-12 06:00:43,050 INFO L226 Difference]: Without dead ends: 442 [2022-07-12 06:00:43,051 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:00:43,053 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 115 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:43,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1083 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:00:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-07-12 06:00:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 434. [2022-07-12 06:00:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 336 states have (on average 1.5089285714285714) internal successors, (507), 339 states have internal predecessors, (507), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-07-12 06:00:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 652 transitions. [2022-07-12 06:00:43,082 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 652 transitions. Word has length 149 [2022-07-12 06:00:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:43,082 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 652 transitions. [2022-07-12 06:00:43,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 652 transitions. [2022-07-12 06:00:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 06:00:43,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:43,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-07-12 06:00:43,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 06:00:43,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:43,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:43,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1101620279, now seen corresponding path program 1 times [2022-07-12 06:00:43,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:43,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126699149] [2022-07-12 06:00:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:00:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:00:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:00:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:00:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:00:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:00:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:00:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:00:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:00:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:00:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:00:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:00:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 06:00:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 06:00:43,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:43,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126699149] [2022-07-12 06:00:43,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126699149] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:00:43,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985410240] [2022-07-12 06:00:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:43,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:43,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:43,431 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) [2022-07-12 06:00:43,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:00:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:43,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 06:00:43,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:00:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 06:00:43,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:00:43,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985410240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:43,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:00:43,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-12 06:00:43,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138120167] [2022-07-12 06:00:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:43,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:00:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:00:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:00:43,766 INFO L87 Difference]: Start difference. First operand 434 states and 652 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:43,814 INFO L93 Difference]: Finished difference Result 859 states and 1294 transitions. [2022-07-12 06:00:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:00:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2022-07-12 06:00:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:43,817 INFO L225 Difference]: With dead ends: 859 [2022-07-12 06:00:43,817 INFO L226 Difference]: Without dead ends: 436 [2022-07-12 06:00:43,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:00:43,820 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 133 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:43,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2043 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:00:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-07-12 06:00:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2022-07-12 06:00:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 337 states have (on average 1.5074183976261128) internal successors, (508), 341 states have internal predecessors, (508), 73 states have call successors, (73), 24 states have call predecessors, (73), 25 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2022-07-12 06:00:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 655 transitions. [2022-07-12 06:00:43,833 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 655 transitions. Word has length 150 [2022-07-12 06:00:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:43,834 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 655 transitions. [2022-07-12 06:00:43,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 655 transitions. [2022-07-12 06:00:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 06:00:43,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:43,836 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-07-12 06:00:43,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 06:00:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:44,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -491633514, now seen corresponding path program 1 times [2022-07-12 06:00:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431140484] [2022-07-12 06:00:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 06:00:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 06:00:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:00:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 06:00:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:00:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:00:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:00:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:00:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:00:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:00:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:00:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 06:00:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:00:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:44,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431140484] [2022-07-12 06:00:44,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431140484] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:00:44,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204602073] [2022-07-12 06:00:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:44,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:44,196 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) [2022-07-12 06:00:44,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:00:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 06:00:44,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:00:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 06:00:44,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:00:44,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204602073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:44,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:00:44,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-12 06:00:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286296562] [2022-07-12 06:00:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:44,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:00:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:00:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:00:44,473 INFO L87 Difference]: Start difference. First operand 436 states and 655 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:44,523 INFO L93 Difference]: Finished difference Result 861 states and 1299 transitions. [2022-07-12 06:00:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:00:44,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2022-07-12 06:00:44,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:44,526 INFO L225 Difference]: With dead ends: 861 [2022-07-12 06:00:44,526 INFO L226 Difference]: Without dead ends: 438 [2022-07-12 06:00:44,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:00:44,528 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 132 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:44,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2032 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:00:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-12 06:00:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-07-12 06:00:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 338 states have (on average 1.5059171597633136) internal successors, (509), 343 states have internal predecessors, (509), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-07-12 06:00:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 661 transitions. [2022-07-12 06:00:44,542 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 661 transitions. Word has length 151 [2022-07-12 06:00:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:44,542 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 661 transitions. [2022-07-12 06:00:44,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 661 transitions. [2022-07-12 06:00:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 06:00:44,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:44,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-12 06:00:44,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 06:00:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:44,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1760964384, now seen corresponding path program 1 times [2022-07-12 06:00:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:44,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484698104] [2022-07-12 06:00:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:44,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:00:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:00:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:00:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:00:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:00:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:00:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:00:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:00:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:00:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:00:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:00:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 06:00:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 06:00:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:44,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484698104] [2022-07-12 06:00:44,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484698104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:44,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:00:44,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:00:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896064780] [2022-07-12 06:00:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:44,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:00:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:00:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:00:44,894 INFO L87 Difference]: Start difference. First operand 438 states and 661 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:46,880 INFO L93 Difference]: Finished difference Result 1064 states and 1615 transitions. [2022-07-12 06:00:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:00:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2022-07-12 06:00:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:46,885 INFO L225 Difference]: With dead ends: 1064 [2022-07-12 06:00:46,886 INFO L226 Difference]: Without dead ends: 649 [2022-07-12 06:00:46,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:00:46,888 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 1572 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:46,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1472 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 06:00:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-12 06:00:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 438. [2022-07-12 06:00:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 338 states have (on average 1.5059171597633136) internal successors, (509), 343 states have internal predecessors, (509), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2022-07-12 06:00:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 660 transitions. [2022-07-12 06:00:46,920 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 660 transitions. Word has length 152 [2022-07-12 06:00:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:46,920 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 660 transitions. [2022-07-12 06:00:46,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 660 transitions. [2022-07-12 06:00:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 06:00:46,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:46,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-07-12 06:00:46,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:00:46,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -904316895, now seen corresponding path program 2 times [2022-07-12 06:00:46,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:46,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118400002] [2022-07-12 06:00:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:00:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 06:00:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:00:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:00:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:00:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:00:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:00:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:00:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:00:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:00:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:00:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 06:00:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 06:00:47,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:47,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118400002] [2022-07-12 06:00:47,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118400002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:47,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:00:47,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:00:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485332407] [2022-07-12 06:00:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:47,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:00:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:00:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:00:47,040 INFO L87 Difference]: Start difference. First operand 438 states and 660 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:48,649 INFO L93 Difference]: Finished difference Result 1066 states and 1618 transitions. [2022-07-12 06:00:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:00:48,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2022-07-12 06:00:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:48,653 INFO L225 Difference]: With dead ends: 1066 [2022-07-12 06:00:48,653 INFO L226 Difference]: Without dead ends: 651 [2022-07-12 06:00:48,654 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:00:48,655 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1551 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:48,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 1483 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:00:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-12 06:00:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 440. [2022-07-12 06:00:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 339 states have (on average 1.5044247787610618) internal successors, (510), 345 states have internal predecessors, (510), 73 states have call successors, (73), 24 states have call predecessors, (73), 27 states have return successors, (80), 72 states have call predecessors, (80), 72 states have call successors, (80) [2022-07-12 06:00:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 663 transitions. [2022-07-12 06:00:48,676 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 663 transitions. Word has length 153 [2022-07-12 06:00:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:48,676 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 663 transitions. [2022-07-12 06:00:48,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:00:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 663 transitions. [2022-07-12 06:00:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 06:00:48,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:48,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-12 06:00:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:00:48,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1718213147, now seen corresponding path program 1 times [2022-07-12 06:00:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:48,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423265718] [2022-07-12 06:00:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:00:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:00:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:00:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:00:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:00:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:00:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:00:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:00:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:00:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:00:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:00:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 06:00:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:00:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:48,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423265718] [2022-07-12 06:00:48,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423265718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:48,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:00:48,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:00:48,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561181592] [2022-07-12 06:00:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:48,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:00:48,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:00:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:00:48,808 INFO L87 Difference]: Start difference. First operand 440 states and 663 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 06:00:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:51,038 INFO L93 Difference]: Finished difference Result 1064 states and 1613 transitions. [2022-07-12 06:00:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:00:51,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-07-12 06:00:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:51,043 INFO L225 Difference]: With dead ends: 1064 [2022-07-12 06:00:51,043 INFO L226 Difference]: Without dead ends: 651 [2022-07-12 06:00:51,045 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:00:51,045 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 1611 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 4939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:51,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 1829 Invalid, 4939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 4276 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 06:00:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-12 06:00:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 440. [2022-07-12 06:00:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 339 states have (on average 1.5044247787610618) internal successors, (510), 345 states have internal predecessors, (510), 73 states have call successors, (73), 24 states have call predecessors, (73), 27 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-07-12 06:00:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 662 transitions. [2022-07-12 06:00:51,072 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 662 transitions. Word has length 154 [2022-07-12 06:00:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:51,072 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 662 transitions. [2022-07-12 06:00:51,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 06:00:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 662 transitions. [2022-07-12 06:00:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 06:00:51,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:51,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-07-12 06:00:51,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:00:51,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2139218771, now seen corresponding path program 2 times [2022-07-12 06:00:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957724833] [2022-07-12 06:00:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:00:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:00:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:00:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:00:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:00:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:00:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:00:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:00:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:00:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:00:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:00:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 06:00:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:00:51,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:51,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957724833] [2022-07-12 06:00:51,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957724833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:51,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:00:51,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:00:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937852439] [2022-07-12 06:00:51,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:00:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:00:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:00:51,244 INFO L87 Difference]: Start difference. First operand 440 states and 662 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, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 06:00:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:53,874 INFO L93 Difference]: Finished difference Result 1066 states and 1619 transitions. [2022-07-12 06:00:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:00:53,874 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, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 155 [2022-07-12 06:00:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:53,878 INFO L225 Difference]: With dead ends: 1066 [2022-07-12 06:00:53,878 INFO L226 Difference]: Without dead ends: 653 [2022-07-12 06:00:53,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:00:53,883 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1556 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4433 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 5082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 4433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:53,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1848 Invalid, 5082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 4433 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 06:00:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-07-12 06:00:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 442. [2022-07-12 06:00:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 340 states have (on average 1.5029411764705882) internal successors, (511), 347 states have internal predecessors, (511), 73 states have call successors, (73), 24 states have call predecessors, (73), 28 states have return successors, (84), 72 states have call predecessors, (84), 72 states have call successors, (84) [2022-07-12 06:00:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 668 transitions. [2022-07-12 06:00:53,915 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 668 transitions. Word has length 155 [2022-07-12 06:00:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:53,917 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 668 transitions. [2022-07-12 06:00:53,917 INFO L496 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, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 06:00:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 668 transitions. [2022-07-12 06:00:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 06:00:53,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:53,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-12 06:00:53,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:00:53,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash -811085194, now seen corresponding path program 1 times [2022-07-12 06:00:53,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:53,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504185425] [2022-07-12 06:00:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:53,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:00:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:00:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 06:00:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:00:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:00:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:00:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:00:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:00:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:00:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:00:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:00:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 06:00:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 06:00:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:54,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504185425] [2022-07-12 06:00:54,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504185425] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:00:54,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742673700] [2022-07-12 06:00:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:54,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:00:54,084 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) [2022-07-12 06:00:54,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:00:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:54,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:00:54,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:00:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:00:54,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:00:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:00:54,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742673700] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:00:54,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:00:54,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-12 06:00:54,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722537356] [2022-07-12 06:00:54,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:00:54,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 06:00:54,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 06:00:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:00:54,543 INFO L87 Difference]: Start difference. First operand 442 states and 668 transitions. Second operand has 15 states, 14 states have (on average 11.0) internal successors, (154), 11 states have internal predecessors, (154), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-12 06:00:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:58,310 INFO L93 Difference]: Finished difference Result 1795 states and 2927 transitions. [2022-07-12 06:00:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 06:00:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.0) internal successors, (154), 11 states have internal predecessors, (154), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 156 [2022-07-12 06:00:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:58,319 INFO L225 Difference]: With dead ends: 1795 [2022-07-12 06:00:58,319 INFO L226 Difference]: Without dead ends: 1384 [2022-07-12 06:00:58,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-12 06:00:58,326 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 3761 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 6381 mSolverCounterSat, 1493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 7874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1493 IncrementalHoareTripleChecker+Valid, 6381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:58,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3763 Valid, 3321 Invalid, 7874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1493 Valid, 6381 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 06:00:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-07-12 06:00:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 795. [2022-07-12 06:00:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 629 states have (on average 1.56120826709062) internal successors, (982), 636 states have internal predecessors, (982), 137 states have call successors, (137), 24 states have call predecessors, (137), 28 states have return successors, (158), 136 states have call predecessors, (158), 136 states have call successors, (158) [2022-07-12 06:00:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1277 transitions. [2022-07-12 06:00:58,384 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1277 transitions. Word has length 156 [2022-07-12 06:00:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:58,385 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1277 transitions. [2022-07-12 06:00:58,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.0) internal successors, (154), 11 states have internal predecessors, (154), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-12 06:00:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1277 transitions. [2022-07-12 06:00:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 06:00:58,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:00:58,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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] [2022-07-12 06:00:58,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 06:00:58,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:00:58,597 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:00:58,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:00:58,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1151975394, now seen corresponding path program 1 times [2022-07-12 06:00:58,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:00:58,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384729285] [2022-07-12 06:00:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:00:58,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:00:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:00:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:00:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:00:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:00:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:00:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:00:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:00:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:00:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:00:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:00:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:00:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:00:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:00:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:00:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:00:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 06:00:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:00:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:00:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:00:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:00:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384729285] [2022-07-12 06:00:58,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384729285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:00:58,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:00:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:00:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116191179] [2022-07-12 06:00:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:00:58,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:00:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:00:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:00:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:00:58,667 INFO L87 Difference]: Start difference. First operand 795 states and 1277 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:00:59,912 INFO L93 Difference]: Finished difference Result 2056 states and 3370 transitions. [2022-07-12 06:00:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:00:59,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-07-12 06:00:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:00:59,918 INFO L225 Difference]: With dead ends: 2056 [2022-07-12 06:00:59,919 INFO L226 Difference]: Without dead ends: 1339 [2022-07-12 06:00:59,921 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:00:59,922 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1567 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:00:59,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 1345 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:00:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-07-12 06:00:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1120. [2022-07-12 06:00:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 890 states have (on average 1.5808988764044944) internal successors, (1407), 897 states have internal predecessors, (1407), 201 states have call successors, (201), 24 states have call predecessors, (201), 28 states have return successors, (232), 200 states have call predecessors, (232), 200 states have call successors, (232) [2022-07-12 06:00:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1840 transitions. [2022-07-12 06:00:59,998 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1840 transitions. Word has length 159 [2022-07-12 06:00:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:00:59,999 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1840 transitions. [2022-07-12 06:00:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:00:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1840 transitions. [2022-07-12 06:01:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 06:01:00,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:00,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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] [2022-07-12 06:01:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:01:00,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1608434226, now seen corresponding path program 1 times [2022-07-12 06:01:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:00,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872815875] [2022-07-12 06:01:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:01:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:01:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:01:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:01:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:01:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:01:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:01:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:01:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 06:01:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 06:01:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:00,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:00,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872815875] [2022-07-12 06:01:00,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872815875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:00,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:00,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047336327] [2022-07-12 06:01:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:00,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:00,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:00,074 INFO L87 Difference]: Start difference. First operand 1120 states and 1840 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:01,576 INFO L93 Difference]: Finished difference Result 2861 states and 4754 transitions. [2022-07-12 06:01:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-07-12 06:01:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:01,601 INFO L225 Difference]: With dead ends: 2861 [2022-07-12 06:01:01,601 INFO L226 Difference]: Without dead ends: 1872 [2022-07-12 06:01:01,606 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:01,607 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1554 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:01,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1336 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 06:01:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-07-12 06:01:01,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1653. [2022-07-12 06:01:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1328 states have (on average 1.5911144578313252) internal successors, (2113), 1335 states have internal predecessors, (2113), 296 states have call successors, (296), 24 states have call predecessors, (296), 28 states have return successors, (327), 295 states have call predecessors, (327), 295 states have call successors, (327) [2022-07-12 06:01:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2736 transitions. [2022-07-12 06:01:01,730 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2736 transitions. Word has length 160 [2022-07-12 06:01:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:01,730 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2736 transitions. [2022-07-12 06:01:01,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2736 transitions. [2022-07-12 06:01:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 06:01:01,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:01,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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] [2022-07-12 06:01:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:01:01,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1068352432, now seen corresponding path program 1 times [2022-07-12 06:01:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:01,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750943817] [2022-07-12 06:01:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:01:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:01:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:01:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:01:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:01:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:01:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:01:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:01:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 06:01:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 06:01:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:01,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:01,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750943817] [2022-07-12 06:01:01,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750943817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:01,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:01,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209271560] [2022-07-12 06:01:01,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:01,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:01,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:01,888 INFO L87 Difference]: Start difference. First operand 1653 states and 2736 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:03,330 INFO L93 Difference]: Finished difference Result 4068 states and 6840 transitions. [2022-07-12 06:01:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:03,331 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-07-12 06:01:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:03,345 INFO L225 Difference]: With dead ends: 4068 [2022-07-12 06:01:03,346 INFO L226 Difference]: Without dead ends: 2681 [2022-07-12 06:01:03,351 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:03,351 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1423 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:03,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1367 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:01:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-07-12 06:01:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2462. [2022-07-12 06:01:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2014 states have (on average 1.5988083416087389) internal successors, (3220), 2021 states have internal predecessors, (3220), 419 states have call successors, (419), 24 states have call predecessors, (419), 28 states have return successors, (466), 418 states have call predecessors, (466), 418 states have call successors, (466) [2022-07-12 06:01:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4105 transitions. [2022-07-12 06:01:03,519 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4105 transitions. Word has length 161 [2022-07-12 06:01:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:03,520 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 4105 transitions. [2022-07-12 06:01:03,520 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4105 transitions. [2022-07-12 06:01:03,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 06:01:03,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:03,533 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:03,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:01:03,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash -667684013, now seen corresponding path program 1 times [2022-07-12 06:01:03,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:03,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952242579] [2022-07-12 06:01:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:03,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:01:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:01:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:01:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:01:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:01:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:01:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:01:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:01:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 06:01:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 06:01:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:03,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:03,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952242579] [2022-07-12 06:01:03,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952242579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:03,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:03,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:03,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696495997] [2022-07-12 06:01:03,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:03,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:03,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:03,661 INFO L87 Difference]: Start difference. First operand 2462 states and 4105 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:05,147 INFO L93 Difference]: Finished difference Result 5952 states and 10100 transitions. [2022-07-12 06:01:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:05,147 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2022-07-12 06:01:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:05,163 INFO L225 Difference]: With dead ends: 5952 [2022-07-12 06:01:05,163 INFO L226 Difference]: Without dead ends: 3975 [2022-07-12 06:01:05,169 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:05,169 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1432 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:05,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1351 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:01:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2022-07-12 06:01:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3756. [2022-07-12 06:01:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3129 states have (on average 1.6037072547139661) internal successors, (5018), 3136 states have internal predecessors, (5018), 598 states have call successors, (598), 24 states have call predecessors, (598), 28 states have return successors, (671), 597 states have call predecessors, (671), 597 states have call successors, (671) [2022-07-12 06:01:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 6287 transitions. [2022-07-12 06:01:05,423 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 6287 transitions. Word has length 162 [2022-07-12 06:01:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:05,424 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 6287 transitions. [2022-07-12 06:01:05,424 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 6287 transitions. [2022-07-12 06:01:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 06:01:05,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:05,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:05,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:01:05,442 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash 315552044, now seen corresponding path program 1 times [2022-07-12 06:01:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875810370] [2022-07-12 06:01:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:05,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:01:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:01:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:01:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:01:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:01:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:01:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:01:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:01:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 06:01:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 06:01:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:05,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875810370] [2022-07-12 06:01:05,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875810370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:05,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:05,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964373265] [2022-07-12 06:01:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:05,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:05,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:05,525 INFO L87 Difference]: Start difference. First operand 3756 states and 6287 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:07,321 INFO L93 Difference]: Finished difference Result 9055 states and 15464 transitions. [2022-07-12 06:01:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:07,322 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-07-12 06:01:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:07,358 INFO L225 Difference]: With dead ends: 9055 [2022-07-12 06:01:07,358 INFO L226 Difference]: Without dead ends: 6116 [2022-07-12 06:01:07,367 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:07,368 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1528 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:07,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1359 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:01:07,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2022-07-12 06:01:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5897. [2022-07-12 06:01:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 4894 states have (on average 1.5986922762566407) internal successors, (7824), 4901 states have internal predecessors, (7824), 974 states have call successors, (974), 24 states have call predecessors, (974), 28 states have return successors, (1091), 973 states have call predecessors, (1091), 973 states have call successors, (1091) [2022-07-12 06:01:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 9889 transitions. [2022-07-12 06:01:07,700 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 9889 transitions. Word has length 163 [2022-07-12 06:01:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:07,700 INFO L495 AbstractCegarLoop]: Abstraction has 5897 states and 9889 transitions. [2022-07-12 06:01:07,701 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 9889 transitions. [2022-07-12 06:01:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 06:01:07,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:07,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:07,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:01:07,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1251926487, now seen corresponding path program 1 times [2022-07-12 06:01:07,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:07,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602737104] [2022-07-12 06:01:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:01:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:01:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:01:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:01:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:01:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:01:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:01:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:01:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 06:01:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 06:01:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:07,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602737104] [2022-07-12 06:01:07,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602737104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:07,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:07,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931952217] [2022-07-12 06:01:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:07,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:07,808 INFO L87 Difference]: Start difference. First operand 5897 states and 9889 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:09,570 INFO L93 Difference]: Finished difference Result 14672 states and 25077 transitions. [2022-07-12 06:01:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:09,571 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2022-07-12 06:01:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:09,610 INFO L225 Difference]: With dead ends: 14672 [2022-07-12 06:01:09,610 INFO L226 Difference]: Without dead ends: 9994 [2022-07-12 06:01:09,623 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:09,623 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1412 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:09,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 1365 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:01:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2022-07-12 06:01:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 9775. [2022-07-12 06:01:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9775 states, 8166 states have (on average 1.5972324271369092) internal successors, (13043), 8173 states have internal predecessors, (13043), 1580 states have call successors, (1580), 24 states have call predecessors, (1580), 28 states have return successors, (1775), 1579 states have call predecessors, (1775), 1579 states have call successors, (1775) [2022-07-12 06:01:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9775 states to 9775 states and 16398 transitions. [2022-07-12 06:01:10,246 INFO L78 Accepts]: Start accepts. Automaton has 9775 states and 16398 transitions. Word has length 164 [2022-07-12 06:01:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:10,246 INFO L495 AbstractCegarLoop]: Abstraction has 9775 states and 16398 transitions. [2022-07-12 06:01:10,247 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9775 states and 16398 transitions. [2022-07-12 06:01:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 06:01:10,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:10,356 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:10,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:01:10,357 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1019336538, now seen corresponding path program 1 times [2022-07-12 06:01:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:10,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483806524] [2022-07-12 06:01:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:01:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:01:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:01:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:01:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:01:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:01:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:01:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:01:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 06:01:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 06:01:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:10,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483806524] [2022-07-12 06:01:10,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483806524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:10,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:10,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589235429] [2022-07-12 06:01:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:10,492 INFO L87 Difference]: Start difference. First operand 9775 states and 16398 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:12,503 INFO L93 Difference]: Finished difference Result 25381 states and 43358 transitions. [2022-07-12 06:01:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:12,504 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-07-12 06:01:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:12,562 INFO L225 Difference]: With dead ends: 25381 [2022-07-12 06:01:12,562 INFO L226 Difference]: Without dead ends: 17307 [2022-07-12 06:01:12,584 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:12,584 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1550 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:12,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1363 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:01:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17307 states. [2022-07-12 06:01:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17307 to 17088. [2022-07-12 06:01:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 14276 states have (on average 1.589310731297282) internal successors, (22689), 14283 states have internal predecessors, (22689), 2783 states have call successors, (2783), 24 states have call predecessors, (2783), 28 states have return successors, (3122), 2782 states have call predecessors, (3122), 2782 states have call successors, (3122) [2022-07-12 06:01:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 28594 transitions. [2022-07-12 06:01:13,731 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 28594 transitions. Word has length 165 [2022-07-12 06:01:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:13,732 INFO L495 AbstractCegarLoop]: Abstraction has 17088 states and 28594 transitions. [2022-07-12 06:01:13,732 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:13,732 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 28594 transitions. [2022-07-12 06:01:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 06:01:13,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:13,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:01:13,784 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash 304376856, now seen corresponding path program 1 times [2022-07-12 06:01:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:13,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766290905] [2022-07-12 06:01:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:13,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:01:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:01:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:01:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:01:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:01:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:01:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:01:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:01:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 06:01:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 06:01:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:13,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766290905] [2022-07-12 06:01:13,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766290905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:13,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:13,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569239164] [2022-07-12 06:01:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:13,970 INFO L87 Difference]: Start difference. First operand 17088 states and 28594 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:16,659 INFO L93 Difference]: Finished difference Result 45357 states and 77371 transitions. [2022-07-12 06:01:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:16,660 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2022-07-12 06:01:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:16,793 INFO L225 Difference]: With dead ends: 45357 [2022-07-12 06:01:16,794 INFO L226 Difference]: Without dead ends: 30647 [2022-07-12 06:01:16,837 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:16,838 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1424 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:16,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1380 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:01:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30647 states. [2022-07-12 06:01:18,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30647 to 30428. [2022-07-12 06:01:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30428 states, 25577 states have (on average 1.5854869609414708) internal successors, (40552), 25584 states have internal predecessors, (40552), 4822 states have call successors, (4822), 24 states have call predecessors, (4822), 28 states have return successors, (5435), 4821 states have call predecessors, (5435), 4821 states have call successors, (5435) [2022-07-12 06:01:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30428 states to 30428 states and 50809 transitions. [2022-07-12 06:01:18,935 INFO L78 Accepts]: Start accepts. Automaton has 30428 states and 50809 transitions. Word has length 166 [2022-07-12 06:01:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:18,935 INFO L495 AbstractCegarLoop]: Abstraction has 30428 states and 50809 transitions. [2022-07-12 06:01:18,935 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 30428 states and 50809 transitions. [2022-07-12 06:01:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 06:01:19,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:19,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:01:19,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash 788796412, now seen corresponding path program 1 times [2022-07-12 06:01:19,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:19,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000227812] [2022-07-12 06:01:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:01:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:01:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:01:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:01:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:01:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:01:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:01:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:01:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 06:01:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 06:01:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:19,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:19,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000227812] [2022-07-12 06:01:19,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000227812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:19,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:19,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:19,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908390247] [2022-07-12 06:01:19,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:19,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:19,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:19,309 INFO L87 Difference]: Start difference. First operand 30428 states and 50809 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:23,578 INFO L93 Difference]: Finished difference Result 83094 states and 140895 transitions. [2022-07-12 06:01:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:23,579 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2022-07-12 06:01:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:23,826 INFO L225 Difference]: With dead ends: 83094 [2022-07-12 06:01:23,826 INFO L226 Difference]: Without dead ends: 55856 [2022-07-12 06:01:23,910 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:23,911 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1503 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:23,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1329 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 06:01:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55856 states. [2022-07-12 06:01:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55856 to 55637. [2022-07-12 06:01:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55637 states, 47071 states have (on average 1.5802298655222962) internal successors, (74383), 47078 states have internal predecessors, (74383), 8537 states have call successors, (8537), 24 states have call predecessors, (8537), 28 states have return successors, (9682), 8536 states have call predecessors, (9682), 8536 states have call successors, (9682) [2022-07-12 06:01:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55637 states to 55637 states and 92602 transitions. [2022-07-12 06:01:28,122 INFO L78 Accepts]: Start accepts. Automaton has 55637 states and 92602 transitions. Word has length 167 [2022-07-12 06:01:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:28,123 INFO L495 AbstractCegarLoop]: Abstraction has 55637 states and 92602 transitions. [2022-07-12 06:01:28,123 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 55637 states and 92602 transitions. [2022-07-12 06:01:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 06:01:28,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:28,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:28,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:01:28,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash -997912840, now seen corresponding path program 1 times [2022-07-12 06:01:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:28,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466905106] [2022-07-12 06:01:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:01:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:01:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:01:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:01:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:01:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:01:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:01:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 06:01:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 06:01:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 06:01:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 06:01:28,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:28,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466905106] [2022-07-12 06:01:28,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466905106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:01:28,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:01:28,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:01:28,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012482643] [2022-07-12 06:01:28,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:01:28,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:01:28,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:01:28,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:01:28,548 INFO L87 Difference]: Start difference. First operand 55637 states and 92602 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:01:34,350 INFO L93 Difference]: Finished difference Result 104150 states and 176881 transitions. [2022-07-12 06:01:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:01:34,350 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2022-07-12 06:01:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:01:34,730 INFO L225 Difference]: With dead ends: 104150 [2022-07-12 06:01:34,731 INFO L226 Difference]: Without dead ends: 103930 [2022-07-12 06:01:34,776 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:01:34,779 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 1464 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:01:34,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1351 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:01:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103930 states. [2022-07-12 06:01:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103930 to 103711. [2022-07-12 06:01:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103711 states, 88346 states have (on average 1.5735177597174745) internal successors, (139014), 88353 states have internal predecessors, (139014), 15336 states have call successors, (15336), 24 states have call predecessors, (15336), 28 states have return successors, (17527), 15335 states have call predecessors, (17527), 15335 states have call successors, (17527) [2022-07-12 06:01:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103711 states to 103711 states and 171877 transitions. [2022-07-12 06:01:41,714 INFO L78 Accepts]: Start accepts. Automaton has 103711 states and 171877 transitions. Word has length 168 [2022-07-12 06:01:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:01:41,715 INFO L495 AbstractCegarLoop]: Abstraction has 103711 states and 171877 transitions. [2022-07-12 06:01:41,715 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:01:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 103711 states and 171877 transitions. [2022-07-12 06:01:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 06:01:41,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:01:41,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:01:41,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:01:41,843 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:01:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:01:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash 447270203, now seen corresponding path program 1 times [2022-07-12 06:01:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:01:41,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005560210] [2022-07-12 06:01:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:41,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:01:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:01:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:01:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:01:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:01:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:01:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:01:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:01:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:41,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:01:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:01:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:01:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:01:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:01:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:01:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 06:01:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 06:01:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 06:01:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 06:01:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-12 06:01:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:01:42,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005560210] [2022-07-12 06:01:42,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005560210] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:01:42,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524699539] [2022-07-12 06:01:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:01:42,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:01:42,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:01:42,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:01:42,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 06:01:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:01:42,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 06:01:42,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:01:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:01:42,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:01:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 06:01:43,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524699539] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:01:43,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:01:43,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2022-07-12 06:01:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825379044] [2022-07-12 06:01:43,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:01:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 06:01:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:01:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 06:01:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-07-12 06:01:43,026 INFO L87 Difference]: Start difference. First operand 103711 states and 171877 transitions. Second operand has 32 states, 30 states have (on average 8.533333333333333) internal successors, (256), 24 states have internal predecessors, (256), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44)